diff --git a/.gitignore b/.gitignore
index ba74660..7972ad0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,9 +1,13 @@
+kociemba/ckociemba/bin/*
+kociemba/ckociemba/cache/*
+
 # Byte-compiled / optimized / DLL files
 __pycache__/
 *.py[cod]
 
 # C extensions
 *.so
+*.o
 
 # Distribution / packaging
 .Python
diff --git a/Makefile b/Makefile
deleted file mode 100644
index 17eb640..0000000
--- a/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
-CKOCIEMBA_SRC = ckociemba/coordcube.c ckociemba/cubiecube.c ckociemba/facecube.c ckociemba/search.c
-CKOCIEMBA_INCLUDE = ckociemba/include
-CFLAGS = -std=c99
-
-solve: solve.c $(CKOCIEMBA_SRC)
-	gcc $(CFLAGS) $(CKOCIEMBA_SRC) -I$(CKOCIEMBA_INCLUDE) solve.c -o solve
-
diff --git a/kociemba/__init__.py b/kociemba/__init__.py
index e69de29..107fa90 100644
--- a/kociemba/__init__.py
+++ b/kociemba/__init__.py
@@ -0,0 +1,40 @@
+import warnings
+
+
+class SlowContextWarning(Warning):
+    pass
+
+try:
+    import os
+    from ckociembawrapper import ffi, lib
+    cache_dir = os.path.join(os.path.dirname(__file__), 'cprunetables')
+
+    def _solve(s):
+        res = lib.solve(s.encode('utf-8'), cache_dir.encode('utf-8'))
+        if res != ffi.NULL:
+            return ffi.string(res).strip()
+        else:
+            raise ValueError('Error. Probably cubestring is invalid')
+except ImportError:
+    warnings.warn("Native version of the package is not available. "
+                  "We have to fallback to pure-Python implementation of "
+                  "the algorithm, which is usually many times slower. "
+                  "If performance is important to you, check official "
+                  "project page for a native implementation: "
+                  "https://github.com/muodov/kociemba",
+                  SlowContextWarning)
+    import pykociemba.search
+    _solve = lambda s: pykociemba.search.Search().solution(s, 24, 1000, False).strip()
+
+
+def solve(cubestring):
+    """
+    Solve a Rubik's cube using two-phase algorithm.
+
+    >>> solve("BBURUDBFUFFFRRFUUFLULUFUDLRRDBBDBDBLUDDFLLRRBRLLLBRDDF")
+    "B U' L' D' R' D' L2 D' L F' L' D F2 R2 U R2 B2 U2 L2 F2 D'"
+    """
+
+    return _solve(cubestring)
+
+__all__ = ['solve']
diff --git a/kociemba/build_ckociemba.py b/kociemba/build_ckociemba.py
new file mode 100644
index 0000000..535db62
--- /dev/null
+++ b/kociemba/build_ckociemba.py
@@ -0,0 +1,34 @@
+import cffi
+
+ffi = cffi.FFI()
+ffi.set_source(
+    "kociemba.ckociembawrapper",
+    """
+    #include <stdio.h>
+    #include <stdlib.h>
+    #include <search.h>
+
+    char* solve(char *cubestring, char *cache_dir)
+    {
+        char *sol = solution(
+            cubestring,
+            24,
+            1000,
+            0,
+            cache_dir
+        );
+        return sol;
+    }
+    """,
+    include_dirs=['kociemba/ckociemba/include'],
+    sources=[
+        'kociemba/ckociemba/coordcube.c',
+        'kociemba/ckociemba/cubiecube.c',
+        'kociemba/ckociemba/facecube.c',
+        'kociemba/ckociemba/search.c'],
+    extra_compile_args=['-std=c99'])
+
+ffi.cdef("char* solve(char *cubestring, char *cache_dir);")
+
+if __name__ == "__main__":
+    ffi.compile(verbose=True)
diff --git a/kociemba/ckociemba/Makefile b/kociemba/ckociemba/Makefile
new file mode 100644
index 0000000..afecee8
--- /dev/null
+++ b/kociemba/ckociemba/Makefile
@@ -0,0 +1,10 @@
+CKOCIEMBA_SRC = coordcube.c cubiecube.c facecube.c search.c
+CKOCIEMBA_INCLUDE = include
+CFLAGS = -std=c99
+BINDIR = bin
+BIN = kociemba
+
+solve: solve.c $(CKOCIEMBA_SRC)
+	mkdir -p $(BINDIR)
+	gcc $(CFLAGS) $(CKOCIEMBA_SRC) -I$(CKOCIEMBA_INCLUDE) solve.c -o $(BINDIR)/$(BIN)
+
diff --git a/ckociemba/coordcube.c b/kociemba/ckociemba/coordcube.c
similarity index 82%
rename from ckociemba/coordcube.c
rename to kociemba/ckociemba/coordcube.c
index 9d9e4d6..610669b 100644
--- a/ckociemba/coordcube.c
+++ b/kociemba/ckociemba/coordcube.c
@@ -15,11 +15,11 @@ short parityMove[2][18] = {
     { 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0 }
 };
 short FRtoBR_Move[N_FRtoBR][N_MOVE];
-short URFtoDLF_Move[N_URFtoDLF][N_MOVE] = {0};
-short URtoDF_Move[N_URtoDF][N_MOVE] = {0};
-short URtoUL_Move[N_URtoUL][N_MOVE] = {0};
-short UBtoDF_Move[N_UBtoDF][N_MOVE] = {0};
-short MergeURtoULandUBtoDF[336][336] = {0};
+short URFtoDLF_Move[N_URFtoDLF][N_MOVE] = {{0}};
+short URtoDF_Move[N_URtoDF][N_MOVE] = {{0}};
+short URtoUL_Move[N_URtoUL][N_MOVE] = {{0}};
+short UBtoDF_Move[N_UBtoDF][N_MOVE] = {{0}};
+short MergeURtoULandUBtoDF[336][336] = {{0}};
 char Slice_URFtoDLF_Parity_Prun[N_SLICE2 * N_URFtoDLF * N_PARITY / 2] = {0};
 char Slice_URtoDF_Parity_Prun[N_SLICE2 * N_URtoDF * N_PARITY / 2] = {0};
 char Slice_Twist_Prun[N_SLICE1 * N_TWIST / 2 + 1] = {0};
@@ -27,10 +27,10 @@ char Slice_Flip_Prun[N_SLICE1 * N_FLIP / 2] = {0};
 
 int PRUNING_INITED = 0;
 
-void move(coordcube_t* coordcube, int m)
+void move(coordcube_t* coordcube, int m, const char *cache_dir)
 {
     if (PRUNING_INITED == 0) {
-        initPruning();
+        initPruning(cache_dir);
     }
     coordcube->twist = twistMove[coordcube->twist][m];
     coordcube->flip = flipMove[coordcube->flip][m];
@@ -44,42 +44,63 @@ void move(coordcube_t* coordcube, int m)
         coordcube->URtoDF = MergeURtoULandUBtoDF[coordcube->URtoUL][coordcube->UBtoDF];
 }
 
-int check_cached_table(const char* name, void* ptr, int len)
+char * join_path(const char *dir, const char *filename)
 {
-    char fname[100] = "prunetables/";
-    strncat(fname, name, 30);
+    int path_len = strnlen(dir, 200);
+    if (path_len == 200) {
+        return NULL;
+    }
+    char *fpath = calloc(path_len + 32, 1);
+    strcpy(fpath, dir);
+    strcat(fpath, "/");
+    strncat(fpath, filename, 30);
+    return fpath;
+}
+
+int check_cached_table(const char* name, void* ptr, int len, const char *cache_dir)
+{
+    char *fname = join_path(cache_dir, name);
+    if (fname == NULL) {
+        fprintf(stderr, "Path to cache tables is too long\n");
+        return -1;
+    }
+    int res = 0;
     if (access(fname, F_OK | R_OK) != -1) {
-        fprintf(stderr, "Found cache for %s. Loading...", name);
-        read_from_file(ptr, len, name);
-        fprintf(stderr, "done.\n");
-        return 0;
+        // fprintf(stderr, "Found cache for %s. Loading...", name);
+        read_from_file(ptr, len, fname);
+        // fprintf(stderr, "done.\n");
+        res = 0;
     } else {
-        fprintf(stderr, "Cache for %s was not found. Recalculating.\n", name);
-        return -1;
+        fprintf(stderr, "Cache table %s was not found. Recalculating.\n", fname);
+        res = 1;
     }
+    free(fname);
+    return res;
 }
 
 void read_from_file(void* ptr, int len, const char* name)
 {
-    char fname[100] = "prunetables/";
-    strncat(fname, name, 30);
-    FILE* f = fopen(fname, "r");
+    FILE* f = fopen(name, "r");
     fread(ptr, len, 1, f);
     fclose(f);
 }
 
-void dump_to_file(void* ptr, int len, const char* name)
+void dump_to_file(void* ptr, int len, const char* name, const char *cache_dir)
 {
     int status;
-    status = mkdir("prunetables", S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);
+    status = mkdir(cache_dir, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);
     if (status == 0 || errno == EEXIST) {
-        char fname[100] = "prunetables/";
-        strncat(fname, name, 30);
-        FILE* f = fopen(fname, "w");
-        fwrite(ptr, len, 1, f);
-        fclose(f);
+        char *fname = join_path(cache_dir, name);
+        if (fname == NULL) {
+            fprintf(stderr, "Path to cache tables is too long\n");
+        } else {
+            FILE* f = fopen(fname, "w");
+            fwrite(ptr, len, 1, f);
+            free(fname);
+            fclose(f);
+        }
     } else {
-        fprintf(stderr, "cannot create prunetables/ directory\n");
+        fprintf(stderr, "cannot create cache tables directory\n");
     }
 }
 
@@ -99,11 +120,12 @@ coordcube_t* get_coordcube(cubiecube_t* cubiecube)
     return result;
 }
 
-void initPruning()
+void initPruning(const char *cache_dir)
 {
     cubiecube_t* a;
+    cubiecube_t* moveCube = get_moveCube();
 
-    if(check_cached_table("twistMove", (void*) twistMove, sizeof(twistMove)) != 0) {
+    if(check_cached_table("twistMove", (void*) twistMove, sizeof(twistMove), cache_dir) != 0) {
         a = get_cubiecube();
         for (short i = 0; i < N_TWIST; i++) {
             setTwist(a, i);
@@ -116,10 +138,10 @@ void initPruning()
             }
         }
         free(a);
-        dump_to_file((void*) twistMove, sizeof(twistMove), "twistMove");
+        dump_to_file((void*) twistMove, sizeof(twistMove), "twistMove", cache_dir);
     }
 
-    if(check_cached_table("flipMove", (void*) flipMove, sizeof(flipMove)) != 0) {
+    if(check_cached_table("flipMove", (void*) flipMove, sizeof(flipMove), cache_dir) != 0) {
         a = get_cubiecube();
         for (short i = 0; i < N_FLIP; i++) {
             setFlip(a, i);
@@ -132,10 +154,10 @@ void initPruning()
             }
         }
         free(a);
-        dump_to_file((void*) flipMove, sizeof(flipMove), "flipMove");
+        dump_to_file((void*) flipMove, sizeof(flipMove), "flipMove", cache_dir);
     }
 
-    if(check_cached_table("FRtoBR_Move", (void*) FRtoBR_Move, sizeof(FRtoBR_Move)) != 0) {
+    if(check_cached_table("FRtoBR_Move", (void*) FRtoBR_Move, sizeof(FRtoBR_Move), cache_dir) != 0) {
         a = get_cubiecube();
         for (short i = 0; i < N_FRtoBR; i++) {
             setFRtoBR(a, i);
@@ -148,10 +170,10 @@ void initPruning()
             }
         }
         free(a);
-        dump_to_file((void*) FRtoBR_Move, sizeof(FRtoBR_Move), "FRtoBR_Move");
+        dump_to_file((void*) FRtoBR_Move, sizeof(FRtoBR_Move), "FRtoBR_Move", cache_dir);
     }
 
-    if(check_cached_table("URFtoDLF_Move", (void*) URFtoDLF_Move, sizeof(URFtoDLF_Move)) != 0) {
+    if(check_cached_table("URFtoDLF_Move", (void*) URFtoDLF_Move, sizeof(URFtoDLF_Move), cache_dir) != 0) {
         a = get_cubiecube();
         for (short i = 0; i < N_URFtoDLF; i++) {
             setURFtoDLF(a, i);
@@ -164,10 +186,10 @@ void initPruning()
             }
         }
         free(a);
-        dump_to_file((void*) URFtoDLF_Move, sizeof(URFtoDLF_Move), "URFtoDLF_Move");
+        dump_to_file((void*) URFtoDLF_Move, sizeof(URFtoDLF_Move), "URFtoDLF_Move", cache_dir);
     }
 
-    if(check_cached_table("URtoDF_Move", (void*) URtoDF_Move, sizeof(URtoDF_Move)) != 0) {
+    if(check_cached_table("URtoDF_Move", (void*) URtoDF_Move, sizeof(URtoDF_Move), cache_dir) != 0) {
         a = get_cubiecube();
         for (short i = 0; i < N_URtoDF; i++) {
             setURtoDF(a, i);
@@ -182,10 +204,10 @@ void initPruning()
             }
         }
         free(a);
-        dump_to_file((void*) URtoDF_Move, sizeof(URtoDF_Move), "URtoDF_Move");
+        dump_to_file((void*) URtoDF_Move, sizeof(URtoDF_Move), "URtoDF_Move", cache_dir);
     }
 
-    if(check_cached_table("URtoUL_Move", (void*) URtoUL_Move, sizeof(URtoUL_Move)) != 0) {
+    if(check_cached_table("URtoUL_Move", (void*) URtoUL_Move, sizeof(URtoUL_Move), cache_dir) != 0) {
         a = get_cubiecube();
         for (short i = 0; i < N_URtoUL; i++) {
             setURtoUL(a, i);
@@ -198,10 +220,10 @@ void initPruning()
             }
         }
         free(a);
-        dump_to_file((void*) URtoUL_Move, sizeof(URtoUL_Move), "URtoUL_Move");
+        dump_to_file((void*) URtoUL_Move, sizeof(URtoUL_Move), "URtoUL_Move", cache_dir);
     }
 
-    if(check_cached_table("UBtoDF_Move", (void*) UBtoDF_Move, sizeof(UBtoDF_Move)) != 0) {
+    if(check_cached_table("UBtoDF_Move", (void*) UBtoDF_Move, sizeof(UBtoDF_Move), cache_dir) != 0) {
         a = get_cubiecube();
         for (short i = 0; i < N_UBtoDF; i++) {
             setUBtoDF(a, i);
@@ -214,10 +236,10 @@ void initPruning()
             }
         }
         free(a);
-        dump_to_file((void*) UBtoDF_Move, sizeof(UBtoDF_Move), "UBtoDF_Move");
+        dump_to_file((void*) UBtoDF_Move, sizeof(UBtoDF_Move), "UBtoDF_Move", cache_dir);
     }
 
-    if(check_cached_table("MergeURtoULandUBtoDF", (void*) MergeURtoULandUBtoDF, sizeof(MergeURtoULandUBtoDF)) != 0) {
+    if(check_cached_table("MergeURtoULandUBtoDF", (void*) MergeURtoULandUBtoDF, sizeof(MergeURtoULandUBtoDF), cache_dir) != 0) {
         // for i, j <336 the six edges UR,UF,UL,UB,DR,DF are not in the
         // UD-slice and the index is <20160
         for (short uRtoUL = 0; uRtoUL < 336; uRtoUL++) {
@@ -225,12 +247,12 @@ void initPruning()
                 MergeURtoULandUBtoDF[uRtoUL][uBtoDF] = (short) getURtoDF_standalone(uRtoUL, uBtoDF);
             }
         }
-        dump_to_file((void*) MergeURtoULandUBtoDF, sizeof(MergeURtoULandUBtoDF), "MergeURtoULandUBtoDF");
+        dump_to_file((void*) MergeURtoULandUBtoDF, sizeof(MergeURtoULandUBtoDF), "MergeURtoULandUBtoDF", cache_dir);
     }
 
     int depth, done;
 
-    if(check_cached_table("Slice_URFtoDLF_Parity_Prun", (void*) Slice_URFtoDLF_Parity_Prun, sizeof(Slice_URFtoDLF_Parity_Prun)) != 0) {
+    if(check_cached_table("Slice_URFtoDLF_Parity_Prun", (void*) Slice_URFtoDLF_Parity_Prun, sizeof(Slice_URFtoDLF_Parity_Prun), cache_dir) != 0) {
         for (int i = 0; i < N_SLICE2 * N_URFtoDLF * N_PARITY / 2; i++)
             Slice_URFtoDLF_Parity_Prun[i] = -1;
         depth = 0;
@@ -271,10 +293,10 @@ void initPruning()
             }
             depth++;
         }
-        dump_to_file((void*) Slice_URFtoDLF_Parity_Prun, sizeof(Slice_URFtoDLF_Parity_Prun), "Slice_URFtoDLF_Parity_Prun");
+        dump_to_file((void*) Slice_URFtoDLF_Parity_Prun, sizeof(Slice_URFtoDLF_Parity_Prun), "Slice_URFtoDLF_Parity_Prun", cache_dir);
     }
 
-    if(check_cached_table("Slice_URtoDF_Parity_Prun", (void*) Slice_URtoDF_Parity_Prun, sizeof(Slice_URtoDF_Parity_Prun)) != 0) {
+    if(check_cached_table("Slice_URtoDF_Parity_Prun", (void*) Slice_URtoDF_Parity_Prun, sizeof(Slice_URtoDF_Parity_Prun), cache_dir) != 0) {
         for (int i = 0; i < N_SLICE2 * N_URtoDF * N_PARITY / 2; i++)
             Slice_URtoDF_Parity_Prun[i] = -1;
         depth = 0;
@@ -315,10 +337,10 @@ void initPruning()
             }
             depth++;
         }
-        dump_to_file((void*) Slice_URtoDF_Parity_Prun, sizeof(Slice_URtoDF_Parity_Prun), "Slice_URtoDF_Parity_Prun");
+        dump_to_file((void*) Slice_URtoDF_Parity_Prun, sizeof(Slice_URtoDF_Parity_Prun), "Slice_URtoDF_Parity_Prun", cache_dir);
     }
     
-    if(check_cached_table("Slice_Twist_Prun", (void*) Slice_Twist_Prun, sizeof(Slice_Twist_Prun)) != 0) {
+    if(check_cached_table("Slice_Twist_Prun", (void*) Slice_Twist_Prun, sizeof(Slice_Twist_Prun), cache_dir) != 0) {
         for (int i = 0; i < N_SLICE1 * N_TWIST / 2 + 1; i++)
             Slice_Twist_Prun[i] = -1;
         depth = 0;
@@ -340,10 +362,10 @@ void initPruning()
             }
             depth++;
         }
-        dump_to_file((void*) Slice_Twist_Prun, sizeof(Slice_Twist_Prun), "Slice_Twist_Prun");
+        dump_to_file((void*) Slice_Twist_Prun, sizeof(Slice_Twist_Prun), "Slice_Twist_Prun", cache_dir);
     }
 
-    if(check_cached_table("Slice_Flip_Prun", (void*) Slice_Flip_Prun, sizeof(Slice_Flip_Prun)) != 0) {
+    if(check_cached_table("Slice_Flip_Prun", (void*) Slice_Flip_Prun, sizeof(Slice_Flip_Prun), cache_dir) != 0) {
         for (int i = 0; i < N_SLICE1 * N_FLIP / 2; i++)
             Slice_Flip_Prun[i] = -1;
         depth = 0;
@@ -365,7 +387,7 @@ void initPruning()
             }
             depth++;
         }
-        dump_to_file((void*) Slice_Flip_Prun, sizeof(Slice_Flip_Prun), "Slice_Flip_Prun");
+        dump_to_file((void*) Slice_Flip_Prun, sizeof(Slice_Flip_Prun), "Slice_Flip_Prun", cache_dir);
     }
 
     PRUNING_INITED = 1;
diff --git a/ckociemba/cubiecube.c b/kociemba/ckociemba/cubiecube.c
similarity index 93%
rename from ckociemba/cubiecube.c
rename to kociemba/ckociemba/cubiecube.c
index 5aa6a2c..64f9874 100644
--- a/ckociemba/cubiecube.c
+++ b/kociemba/ckociemba/cubiecube.c
@@ -1,9 +1,10 @@
 #include "cubiecube.h"
+#include "facecube.h"
 
-int MOVECUBE_INITED = 0;
-
-void init_moveCube()
+cubiecube_t * get_moveCube()
 {
+    static cubiecube_t moveCube[6];
+    static int moveCube_initialized = 0;
     static const corner_t   cpU[8]  = { UBR, URF, UFL, ULB, DFR, DLF, DBL, DRB };
     static const char       coU[8]  = { 0, 0, 0, 0, 0, 0, 0, 0 };
     static const edge_t     epU[12] = { UB, UR, UF, UL, DR, DF, DL, DB, FR, FL, BL, BR };
@@ -29,39 +30,38 @@ void init_moveCube()
     static const edge_t     epB[12] = { UR, UF, UL, BR, DR, DF, DL, BL, FR, FL, UB, DB };
     static const char       eoB[12] = { 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1 };
 
-    memcpy(moveCube[0].cp, cpU, sizeof(cpU));
-    memcpy(moveCube[0].co, coU, sizeof(coU));
-    memcpy(moveCube[0].ep, epU, sizeof(epU));
-    memcpy(moveCube[0].eo, eoU, sizeof(eoU));
-    memcpy(moveCube[1].cp, cpR, sizeof(cpR));
-    memcpy(moveCube[1].co, coR, sizeof(coR));
-    memcpy(moveCube[1].ep, epR, sizeof(epR));
-    memcpy(moveCube[1].eo, eoR, sizeof(eoR));
-    memcpy(moveCube[2].cp, cpF, sizeof(cpF));
-    memcpy(moveCube[2].co, coF, sizeof(coF));
-    memcpy(moveCube[2].ep, epF, sizeof(epF));
-    memcpy(moveCube[2].eo, eoF, sizeof(eoF));
-    memcpy(moveCube[3].cp, cpD, sizeof(cpD));
-    memcpy(moveCube[3].co, coD, sizeof(coD));
-    memcpy(moveCube[3].ep, epD, sizeof(epD));
-    memcpy(moveCube[3].eo, eoD, sizeof(eoD));
-    memcpy(moveCube[4].cp, cpL, sizeof(cpL));
-    memcpy(moveCube[4].co, coL, sizeof(coL));
-    memcpy(moveCube[4].ep, epL, sizeof(epL));
-    memcpy(moveCube[4].eo, eoL, sizeof(eoL));
-    memcpy(moveCube[5].cp, cpB, sizeof(cpB));
-    memcpy(moveCube[5].co, coB, sizeof(coB));
-    memcpy(moveCube[5].ep, epB, sizeof(epB));
-    memcpy(moveCube[5].eo, eoB, sizeof(eoB));
-
-    MOVECUBE_INITED = 1;
+    if (!moveCube_initialized) {
+        memcpy(moveCube[0].cp, cpU, sizeof(cpU));
+        memcpy(moveCube[0].co, coU, sizeof(coU));
+        memcpy(moveCube[0].ep, epU, sizeof(epU));
+        memcpy(moveCube[0].eo, eoU, sizeof(eoU));
+        memcpy(moveCube[1].cp, cpR, sizeof(cpR));
+        memcpy(moveCube[1].co, coR, sizeof(coR));
+        memcpy(moveCube[1].ep, epR, sizeof(epR));
+        memcpy(moveCube[1].eo, eoR, sizeof(eoR));
+        memcpy(moveCube[2].cp, cpF, sizeof(cpF));
+        memcpy(moveCube[2].co, coF, sizeof(coF));
+        memcpy(moveCube[2].ep, epF, sizeof(epF));
+        memcpy(moveCube[2].eo, eoF, sizeof(eoF));
+        memcpy(moveCube[3].cp, cpD, sizeof(cpD));
+        memcpy(moveCube[3].co, coD, sizeof(coD));
+        memcpy(moveCube[3].ep, epD, sizeof(epD));
+        memcpy(moveCube[3].eo, eoD, sizeof(eoD));
+        memcpy(moveCube[4].cp, cpL, sizeof(cpL));
+        memcpy(moveCube[4].co, coL, sizeof(coL));
+        memcpy(moveCube[4].ep, epL, sizeof(epL));
+        memcpy(moveCube[4].eo, eoL, sizeof(eoL));
+        memcpy(moveCube[5].cp, cpB, sizeof(cpB));
+        memcpy(moveCube[5].co, coB, sizeof(coB));
+        memcpy(moveCube[5].ep, epB, sizeof(epB));
+        memcpy(moveCube[5].eo, eoB, sizeof(eoB));
+    }
+
+    return moveCube;
 }
 
 cubiecube_t* get_cubiecube()
 {
-    if (MOVECUBE_INITED == 0)
-        init_moveCube();
-
     cubiecube_t* result = (cubiecube_t *) calloc(1, sizeof(cubiecube_t));
 
     static const corner_t   cp[8]   = { URF, UFL, ULB, UBR, DFR, DLF, DBL, DRB };
diff --git a/ckociemba/facecube.c b/kociemba/ckociemba/facecube.c
similarity index 99%
rename from ckociemba/facecube.c
rename to kociemba/ckociemba/facecube.c
index 6bc7178..e851a0d 100644
--- a/ckociemba/facecube.c
+++ b/kociemba/ckociemba/facecube.c
@@ -81,7 +81,7 @@ void to_String(facecube_t* facecube, char* res)
 
 cubiecube_t* toCubieCube(facecube_t* facecube)
 {
-    char ori;
+    unsigned char ori;
     cubiecube_t* ccRet = (cubiecube_t*) calloc(1, sizeof(cubiecube_t));
     for (int i = 0; i < 8; i++)
         ccRet->cp[i] = URF;// invalidate corners
diff --git a/ckociemba/include/color.h b/kociemba/ckociemba/include/color.h
similarity index 100%
rename from ckociemba/include/color.h
rename to kociemba/ckociemba/include/color.h
diff --git a/ckociemba/include/coordcube.h b/kociemba/ckociemba/include/coordcube.h
similarity index 93%
rename from ckociemba/include/coordcube.h
rename to kociemba/ckociemba/include/coordcube.h
index d87e151..a6ae84f 100644
--- a/ckociemba/include/coordcube.h
+++ b/kociemba/ckociemba/include/coordcube.h
@@ -99,7 +99,7 @@ extern char Slice_Twist_Prun[N_SLICE1 * N_TWIST / 2 + 1];
 extern char Slice_Flip_Prun[N_SLICE1 * N_FLIP / 2];
 
 extern int PRUNING_INITED;
-void initPruning();
+void initPruning(const char *cache_dir);
 
 // Set pruning value in table. Two values are stored in one char.
 void setPruning(char *table, int index, char value);
@@ -108,9 +108,9 @@ void setPruning(char *table, int index, char value);
 char getPruning(char *table, int index);
 
 coordcube_t* get_coordcube(cubiecube_t* cubiecube);
-void move(coordcube_t* coordcube, int m);
-int check_cached_table(const char* name, void* ptr, int len);
-void dump_to_file(void* ptr, int len, const char* name);
+void move(coordcube_t* coordcube, int m, const char *cache_dir);
+int check_cached_table(const char* name, void* ptr, int len, const char *cache_dir);
+void dump_to_file(void* ptr, int len, const char* name, const char *cache_dir);
 void read_from_file(void* ptr, int len, const char* name);
 
 #endif
diff --git a/ckociemba/include/corner.h b/kociemba/ckociemba/include/corner.h
similarity index 100%
rename from ckociemba/include/corner.h
rename to kociemba/ckociemba/include/corner.h
diff --git a/ckociemba/include/cubiecube.h b/kociemba/ckociemba/include/cubiecube.h
similarity index 91%
rename from ckociemba/include/cubiecube.h
rename to kociemba/ckociemba/include/cubiecube.h
index 2ea4dd5..6bbec06 100644
--- a/ckociemba/include/cubiecube.h
+++ b/kociemba/ckociemba/include/cubiecube.h
@@ -6,10 +6,9 @@
 
 #include "corner.h" 
 #include "edge.h"
-#include "facecube.h"
 
 //Cube on the cubie level
-struct cubiecube_struct {
+typedef struct {
     // initialize to Id-Cube
     // corner permutation
     corner_t cp[8];
@@ -19,14 +18,10 @@ struct cubiecube_struct {
     edge_t ep[12];
     // edge orientation
     char eo[12];
-};
+} cubiecube_t;
 
 // this CubieCube array represents the 6 basic cube moves
-cubiecube_t moveCube[6];
-extern int MOVECUBE_INITED;
-
-void init_moveCube();
-
+cubiecube_t* get_moveCube();
 cubiecube_t* get_cubiecube();
 
 // n choose k
@@ -35,7 +30,7 @@ void rotateLeft_corner(corner_t* arr, int l, int r);
 void rotateRight_corner(corner_t* arr, int l, int r);
 void rotateLeft_edge(edge_t* arr, int l, int r);
 void rotateRight_edge(edge_t* arr, int l, int r);
-facecube_t* toFaceCube(cubiecube_t* cubiecube);
+// facecube_t* toFaceCube(cubiecube_t* cubiecube);
 void cornerMultiply(cubiecube_t* cubiecube, cubiecube_t* b);
 void edgeMultiply(cubiecube_t* cubiecube, cubiecube_t* b);
 void multiply(cubiecube_t* cubiecube, cubiecube_t* b);
diff --git a/ckociemba/include/edge.h b/kociemba/ckociemba/include/edge.h
similarity index 100%
rename from ckociemba/include/edge.h
rename to kociemba/ckociemba/include/edge.h
diff --git a/ckociemba/include/facecube.h b/kociemba/ckociemba/include/facecube.h
similarity index 94%
rename from ckociemba/include/facecube.h
rename to kociemba/ckociemba/include/facecube.h
index f1aad12..687dff3 100644
--- a/ckociemba/include/facecube.h
+++ b/kociemba/ckociemba/include/facecube.h
@@ -5,9 +5,7 @@
 #include "color.h"
 #include "corner.h"
 #include "edge.h"
-#include "facecube.h"
-
-typedef struct cubiecube_struct cubiecube_t;
+#include "cubiecube.h"
 
 //Cube on the facelet level
 typedef struct {
diff --git a/ckociemba/include/facelet.h b/kociemba/ckociemba/include/facelet.h
similarity index 100%
rename from ckociemba/include/facelet.h
rename to kociemba/ckociemba/include/facelet.h
diff --git a/ckociemba/include/search.h b/kociemba/ckociemba/include/search.h
similarity index 98%
rename from ckociemba/include/search.h
rename to kociemba/ckociemba/include/search.h
index f3e1531..0a6a1b1 100644
--- a/ckociemba/include/search.h
+++ b/kociemba/ckociemba/include/search.h
@@ -49,7 +49,7 @@ char* solutionToString(search_t* search, int length, int depthPhase1);
  *         Error 7: No solution exists for the given maxDepth<br>
  *         Error 8: Timeout, no solution within given time
  */
-char* solution(char* facelets, int maxDepth, long timeOut, int useSeparator);
+char* solution(char* facelets, int maxDepth, long timeOut, int useSeparator, const char* cache_dir);
 
 // Apply phase2 of algorithm and return the combined phase1 and phase2 depth. In phase2, only the moves
 // U,D,R2,F2,L2 and B2 are allowed.
diff --git a/ckociemba/search.c b/kociemba/ckociemba/search.c
similarity index 98%
rename from ckociemba/search.c
rename to kociemba/ckociemba/search.c
index 196c62c..59237b1 100644
--- a/ckociemba/search.c
+++ b/kociemba/ckociemba/search.c
@@ -1,6 +1,8 @@
 #include <time.h>
 #include <stdlib.h>
 #include "search.h"
+#include "color.h"
+#include "facecube.h"
 #include "coordcube.h"
 
 #define MIN(a, b) (((a)<(b))?(a):(b))
@@ -53,10 +55,10 @@ char* solutionToString(search_t* search, int length, int depthPhase1)
 }
 
 
-char* solution(char* facelets, int maxDepth, long timeOut, int useSeparator)
+char* solution(char* facelets, int maxDepth, long timeOut, int useSeparator, const char* cache_dir)
 {
     if (PRUNING_INITED == 0) {
-        initPruning();
+        initPruning(cache_dir);
     }
 
     search_t* search = (search_t*) calloc(1, sizeof(search_t));
diff --git a/solve.c b/kociemba/ckociemba/solve.c
similarity index 91%
rename from solve.c
rename to kociemba/ckociemba/solve.c
index d0199f7..3d3467e 100644
--- a/solve.c
+++ b/kociemba/ckociemba/solve.c
@@ -9,7 +9,8 @@ int main(int argc, char **argv)
             argv[1],
             24,
             1000,
-            0
+            0,
+            "cache"
         );
         if (sol == NULL) {
             puts("Unsolvable cube!");
diff --git a/kociemba/command_line.py b/kociemba/command_line.py
new file mode 100644
index 0000000..1bdbcb9
--- /dev/null
+++ b/kociemba/command_line.py
@@ -0,0 +1,9 @@
+import sys
+from kociemba import solve
+
+
+def main():
+    if len(sys.argv) > 1:
+        print(solve(sys.argv[1]))
+    else:
+        print('Usage: kociemba <cubestring>\nfor example:\nkociemba DRLUUBFBRBLURRLRUBLRDDFDLFUFUFFDBRDUBRUFLLFDDBFLUBLRBD')
diff --git a/prunetables/FRtoBR_Move b/kociemba/cprunetables/FRtoBR_Move
similarity index 100%
rename from prunetables/FRtoBR_Move
rename to kociemba/cprunetables/FRtoBR_Move
diff --git a/prunetables/MergeURtoULandUBtoDF b/kociemba/cprunetables/MergeURtoULandUBtoDF
similarity index 100%
rename from prunetables/MergeURtoULandUBtoDF
rename to kociemba/cprunetables/MergeURtoULandUBtoDF
diff --git a/prunetables/Slice_Flip_Prun b/kociemba/cprunetables/Slice_Flip_Prun
similarity index 100%
rename from prunetables/Slice_Flip_Prun
rename to kociemba/cprunetables/Slice_Flip_Prun
diff --git a/prunetables/Slice_Twist_Prun b/kociemba/cprunetables/Slice_Twist_Prun
similarity index 100%
rename from prunetables/Slice_Twist_Prun
rename to kociemba/cprunetables/Slice_Twist_Prun
diff --git a/prunetables/Slice_URFtoDLF_Parity_Prun b/kociemba/cprunetables/Slice_URFtoDLF_Parity_Prun
similarity index 100%
rename from prunetables/Slice_URFtoDLF_Parity_Prun
rename to kociemba/cprunetables/Slice_URFtoDLF_Parity_Prun
diff --git a/prunetables/Slice_URtoDF_Parity_Prun b/kociemba/cprunetables/Slice_URtoDF_Parity_Prun
similarity index 100%
rename from prunetables/Slice_URtoDF_Parity_Prun
rename to kociemba/cprunetables/Slice_URtoDF_Parity_Prun
diff --git a/prunetables/UBtoDF_Move b/kociemba/cprunetables/UBtoDF_Move
similarity index 100%
rename from prunetables/UBtoDF_Move
rename to kociemba/cprunetables/UBtoDF_Move
diff --git a/prunetables/URFtoDLF_Move b/kociemba/cprunetables/URFtoDLF_Move
similarity index 100%
rename from prunetables/URFtoDLF_Move
rename to kociemba/cprunetables/URFtoDLF_Move
diff --git a/prunetables/URtoDF_Move b/kociemba/cprunetables/URtoDF_Move
similarity index 100%
rename from prunetables/URtoDF_Move
rename to kociemba/cprunetables/URtoDF_Move
diff --git a/prunetables/URtoUL_Move b/kociemba/cprunetables/URtoUL_Move
similarity index 100%
rename from prunetables/URtoUL_Move
rename to kociemba/cprunetables/URtoUL_Move
diff --git a/prunetables/flipMove b/kociemba/cprunetables/flipMove
similarity index 100%
rename from prunetables/flipMove
rename to kociemba/cprunetables/flipMove
diff --git a/prunetables/twistMove b/kociemba/cprunetables/twistMove
similarity index 100%
rename from prunetables/twistMove
rename to kociemba/cprunetables/twistMove
diff --git a/kociemba/pykociemba/__init__.py b/kociemba/pykociemba/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/kociemba/color.py b/kociemba/pykociemba/color.py
similarity index 100%
rename from kociemba/color.py
rename to kociemba/pykociemba/color.py
diff --git a/kociemba/coordcube.py b/kociemba/pykociemba/coordcube.py
similarity index 100%
rename from kociemba/coordcube.py
rename to kociemba/pykociemba/coordcube.py
diff --git a/kociemba/corner.py b/kociemba/pykociemba/corner.py
similarity index 100%
rename from kociemba/corner.py
rename to kociemba/pykociemba/corner.py
diff --git a/kociemba/cubiecube.py b/kociemba/pykociemba/cubiecube.py
similarity index 100%
rename from kociemba/cubiecube.py
rename to kociemba/pykociemba/cubiecube.py
diff --git a/kociemba/edge.py b/kociemba/pykociemba/edge.py
similarity index 100%
rename from kociemba/edge.py
rename to kociemba/pykociemba/edge.py
diff --git a/kociemba/facecube.py b/kociemba/pykociemba/facecube.py
similarity index 100%
rename from kociemba/facecube.py
rename to kociemba/pykociemba/facecube.py
diff --git a/kociemba/facelet.py b/kociemba/pykociemba/facelet.py
similarity index 100%
rename from kociemba/facelet.py
rename to kociemba/pykociemba/facelet.py
diff --git a/kociemba/prunetables/FRtoBR_Move.pkl b/kociemba/pykociemba/prunetables/FRtoBR_Move.pkl
similarity index 100%
rename from kociemba/prunetables/FRtoBR_Move.pkl
rename to kociemba/pykociemba/prunetables/FRtoBR_Move.pkl
diff --git a/kociemba/prunetables/MergeURtoULandUBtoDF.pkl b/kociemba/pykociemba/prunetables/MergeURtoULandUBtoDF.pkl
similarity index 100%
rename from kociemba/prunetables/MergeURtoULandUBtoDF.pkl
rename to kociemba/pykociemba/prunetables/MergeURtoULandUBtoDF.pkl
diff --git a/kociemba/prunetables/Slice_Flip_Prun.pkl b/kociemba/pykociemba/prunetables/Slice_Flip_Prun.pkl
similarity index 100%
rename from kociemba/prunetables/Slice_Flip_Prun.pkl
rename to kociemba/pykociemba/prunetables/Slice_Flip_Prun.pkl
diff --git a/kociemba/prunetables/Slice_Twist_Prun.pkl b/kociemba/pykociemba/prunetables/Slice_Twist_Prun.pkl
similarity index 100%
rename from kociemba/prunetables/Slice_Twist_Prun.pkl
rename to kociemba/pykociemba/prunetables/Slice_Twist_Prun.pkl
diff --git a/kociemba/prunetables/Slice_URFtoDLF_Parity_Prun.pkl b/kociemba/pykociemba/prunetables/Slice_URFtoDLF_Parity_Prun.pkl
similarity index 100%
rename from kociemba/prunetables/Slice_URFtoDLF_Parity_Prun.pkl
rename to kociemba/pykociemba/prunetables/Slice_URFtoDLF_Parity_Prun.pkl
diff --git a/kociemba/prunetables/Slice_URtoDF_Parity_Prun.pkl b/kociemba/pykociemba/prunetables/Slice_URtoDF_Parity_Prun.pkl
similarity index 100%
rename from kociemba/prunetables/Slice_URtoDF_Parity_Prun.pkl
rename to kociemba/pykociemba/prunetables/Slice_URtoDF_Parity_Prun.pkl
diff --git a/kociemba/prunetables/UBtoDF_Move.pkl b/kociemba/pykociemba/prunetables/UBtoDF_Move.pkl
similarity index 100%
rename from kociemba/prunetables/UBtoDF_Move.pkl
rename to kociemba/pykociemba/prunetables/UBtoDF_Move.pkl
diff --git a/kociemba/prunetables/URFtoDLF_Move.pkl b/kociemba/pykociemba/prunetables/URFtoDLF_Move.pkl
similarity index 100%
rename from kociemba/prunetables/URFtoDLF_Move.pkl
rename to kociemba/pykociemba/prunetables/URFtoDLF_Move.pkl
diff --git a/kociemba/prunetables/URtoDF_Move.pkl b/kociemba/pykociemba/prunetables/URtoDF_Move.pkl
similarity index 100%
rename from kociemba/prunetables/URtoDF_Move.pkl
rename to kociemba/pykociemba/prunetables/URtoDF_Move.pkl
diff --git a/kociemba/prunetables/URtoUL_Move.pkl b/kociemba/pykociemba/prunetables/URtoUL_Move.pkl
similarity index 100%
rename from kociemba/prunetables/URtoUL_Move.pkl
rename to kociemba/pykociemba/prunetables/URtoUL_Move.pkl
diff --git a/kociemba/prunetables/flipMove.pkl b/kociemba/pykociemba/prunetables/flipMove.pkl
similarity index 100%
rename from kociemba/prunetables/flipMove.pkl
rename to kociemba/pykociemba/prunetables/flipMove.pkl
diff --git a/kociemba/prunetables/twistMove.pkl b/kociemba/pykociemba/prunetables/twistMove.pkl
similarity index 100%
rename from kociemba/prunetables/twistMove.pkl
rename to kociemba/pykociemba/prunetables/twistMove.pkl
diff --git a/kociemba/search.py b/kociemba/pykociemba/search.py
similarity index 100%
rename from kociemba/search.py
rename to kociemba/pykociemba/search.py
diff --git a/kociemba/tools.py b/kociemba/pykociemba/tools.py
similarity index 100%
rename from kociemba/tools.py
rename to kociemba/pykociemba/tools.py
diff --git a/setup.cfg b/setup.cfg
new file mode 100644
index 0000000..6a53971
--- /dev/null
+++ b/setup.cfg
@@ -0,0 +1,3 @@
+[aliases]
+test=pytest
+
diff --git a/setup.py b/setup.py
new file mode 100644
index 0000000..9d8749a
--- /dev/null
+++ b/setup.py
@@ -0,0 +1,29 @@
+from setuptools import setup
+
+
+setup(
+    name='kociemba',
+    version='1.0',
+    description='Python/C implementation of Herbert Kociemba\'s Two-Phase algorithm for solving Rubik\'s Cube',
+    keywords='kociemba rubik cube solver twophase',
+    url='https://github.com/muodov/kociemba',
+    author='muodov',
+    author_email='muodov@gmail.com',
+    license='GPLv2',
+    packages=['kociemba'],
+    package_data={
+        '': ['cprunetables/*', 'pykociemba/**/*'],
+    },
+    classifiers=(
+        'Development Status :: 5 - Production/Stable',
+        'Programming Language :: Python',
+    ),
+    entry_points = {
+        'console_scripts': ['kociemba=kociemba.command_line:main'],
+    },
+    setup_requires=['pytest-runner', "cffi>=1.0.0"],
+    tests_require=['pytest', ],
+    zip_safe=False,
+    cffi_modules=["kociemba/build_ckociemba.py:ffi"],
+    install_requires=["cffi>=1.0.0"],
+)
diff --git a/test.py b/test.py
deleted file mode 100644
index 6810e09..0000000
--- a/test.py
+++ /dev/null
@@ -1,340 +0,0 @@
-import sys
-import os
-import subprocess
-import logging
-logging.basicConfig(level=logging.DEBUG, format='%(asctime)s - %(levelname)s - %(message)s')
-# import kociemba.search
-
-# these results were produced by original Kociemba's Java implementation
-javares = [
-    ("BBURUDBFUFFFRRFUUFLULUFUDLRRDBBDBDBLUDDFLLRRBRLLLBRDDF",
-    "B U' L' D' R' D' L2 D' L F' L' D F2 R2 U R2 B2 U2 L2 F2 D' "),
-
-    ("FDLUUURLFLBDFRRDLBBBUBFLDDLFBBUDUBRLURDFLRUFRFLRFBDUDR",
-    "U F' L2 U F' L2 F L2 F2 D L' F' U2 B2 D F2 D' R2 L2 D F2 U' "),
-
-    ("UDRFULDRBLDUBRDUFBFBDRFDFURLBBLDRDURLLRULUFBUFRBFBFDLL",
-    "F U2 D2 L' F2 D' B R L2 U F U F2 D2 B2 D R2 U2 F2 L2 B2 "),
-
-    ("LRLLURRLBDUULRFUFLFDRUFBRBLDUFDDRRBDDFURLLBFFBDBUBBFDU",
-    "B2 D' R2 F U R F' D2 L' B D F2 R2 L2 U' B2 D2 B2 U B2 "),
-
-    ("UUULULFLFDUBDRRDBBUFLFFLBRRLDFFDDBUUFBRRLDRUDLBLFBBRRD",
-    "U2 F' D F U F' U F2 R' F R' D2 R2 F2 U2 D B2 U2 L2 F2 "),
-
-    ("LRRFUUBDLFBBLRDLLRUFDLFURLFBBUBDDDDUDULRLFRRDUUBRBFFBF",
-    "R' B' D' R' B' L F2 U' D F' R2 L2 U' R2 F2 U R2 U B2 D' "),
-
-    ("FBRDULFBRFBBRRRDLBRRUDFUUDFLBLFDUBFDLLDLLFRRBUUUDBFLUD",
-    "U F R' D' R' U2 L D B' R L' U' B2 L2 U2 D2 B2 R2 D L2 B2 "),
-
-    ("FLBUULFFLFDURRDBUBUUDDFFBRDDBLRDRFLLRLRULFUDRRBDBBBUFL",
-    "U2 D B' U2 R' D2 L2 D R2 L B' U' L2 D L2 D F2 L2 B2 U' "),
-
-    ("UBLLURBDLDDFRRLRFLDFBLFURFFFLDBDULBUBDRRLBDDUUURUBFBRF",
-    "U' R2 F U2 R' L' F' L U D' R' U' R2 B2 L2 B2 L2 U2 R2 D' F2 "),
-
-    ("UDLFUBLRFRDDLRFDBDBBDDFUUUBFRRLDUFFLBLUFLRRBLFLRUBDBRU",
-    "U R' L F L' U' F' D R F' L' B2 U L2 B2 D L2 U2 R2 B2 D "),
-
-    ("URBLUBDDBURDLRDLDBFBLLFFULDBBFUDFLRRRURBLDFFRLUFRBUDFU",
-    "U2 R2 F' R B' D2 B L' B U' R2 B L2 F2 U2 F2 U' R2 D' L2 D R2 "),
-
-    ("BLBDUULUDBLRDRFLBUUBLRFFURDLDFRDRRUFRBFLLUFFBDDULBBRFD",
-    "U2 D2 B' D' F B L2 F2 L D2 L' U F2 U L2 D L2 U2 L2 D F2 "),
-
-    ("ULFUUURRURLLLRRUBLDFFLFFBDRURBRDDDFBFBFFLDBBLDBLUBDDUR",
-    "U2 B2 L2 B' D R U2 B2 L' U D2 F' U F2 L2 U2 D' R2 F2 U2 D' F2 "),
-
-    ("LUFBUUUDDLLRDRRDDLBFFFFRUDBLLRRDBRBFDURFLRFUBUFBBBLULD",
-    "D' L B2 U' F' B U B' R2 D2 R' B2 L2 U R2 U B2 R2 U' F2 D2 "),
-
-    ("UDDBURDDBUFLFRLFDFRRLRFLUBRFDUBDFRFLBLBRLUFULBLRUBBDUD",
-    "U2 B' U' B' R' F2 U' L' F' D B U F2 D2 F2 D F2 R2 U2 F2 D' "),
-
-    ("UUBUUBUDBDRLFRFDUDBBRBFRFBRUUFDDLLDFFRRDLLBRRUFLLBFLLD",
-    "U2 R' B2 U' F2 D B R F2 R U2 B2 U2 R2 U' F2 U2 R2 D' "),
-
-    ("BDLRULLRRDFFBRLDRLBFFFFUUDBBRRLDURDDLBULLUUBRUBDUBDFFF",
-    "F2 D' L2 U B' D B L F' B U' L2 D2 L2 B2 U R2 F2 U F2 "),
-
-    ("LFRUULBBDBFBDRBLFRDDLLFLFRDRBFDDUBUUURRFLBLRDURFUBDFLU",
-    "R' D' F' R U' L2 D2 R D L' D' F2 D' R2 U' R2 F2 B2 L2 U2 "),
-
-    ("UBBRUDBLFRBRRRUFBBLFDDFFFULUFDDDLBLUFUDBLRLFRDULLBRRDU",
-    "R' U B R U' R D' R2 L' F' R' F2 R2 U L2 D' B2 U2 L2 D' "),
-
-    ("FRRUUFURDBLFRRFFLUBDLRFBLFUFULLDDBBBULRDLURBDDFRDBBLUD",
-    "U R2 U F R' B' R F2 D F' L' D' R2 D B2 D' L2 B2 D R2 L2 "),
-
-    ("ULDFUBBRRBDLFRBFFLUUDBFLRFDUDRLDUFUDRRLDLUUDBBBFRBRFLL",
-    "F' B' L' U D B U2 F' B' D2 R' B2 U L2 D' F2 R2 D2 R2 U R2 "),
-
-    ("ULLLURFBBDUBBRUBLFURRDFDRFUDRRFDBUULLURRLLLDFDFBBBDDFF",
-    "U' F2 D2 B2 R2 U B R B U L' B' U B2 D B2 R2 D L2 U D2 "),
-
-    ("BDBDURFFRDFDRRLUBLLLFBFURFBBULDDURLDRFURLRUBDLLUUBDFBF",
-    "U2 B2 U' F' D' R2 U F2 D' L' B R2 B2 U' B2 U' B2 D' B2 R2 U' "),
-
-    ("DRUUUDDBRULLBRBFFLLLBFFDBURLFUUDLRRURRFFLDFLDFDBUBRBBD",
-    "D F R L B2 L' B U F' D' R U B2 U F2 U B2 U2 F2 U' L2 "),
-
-    ("BDLLURUFRDBDRRRDFURLFLFUBFLRDBLDUBBLDDFFLBLUUFBRDBRFUU",
-    "L' D R' U' B D F D F2 B' R B2 U' L2 U' F2 U D F2 R2 D2 "),
-
-    ("RRRUURUUBDDBFRBFLURLRFFRLULDBDLDBLLLDFFULDUDBUBFDBRFFB",
-    "U D2 R' F' R' U' B R' U' L F2 B2 U2 B2 D' F2 D R2 F2 D2 "),
-
-    ("LFRLUUBBLBFUDRRUUFDDUDFFULLBUFLDBLFDFDRBLRBBRFRDUBRRLD",
-    "F2 R U' F D2 B D B' L U2 R U F2 U2 R2 U2 R2 U' B2 D' "),
-
-    ("FRRBUBDDURLBDRDLUDRLFLFBLBFDUUFDRLUFRRBRLFUUBUDDFBFLLB",
-    "U2 D F' B' R' D' L B' R B R L2 D2 L2 F2 U B2 R2 B2 D2 F2 "),
-
-    ("DBUFUFDFUBLLLRURUBLRRDFBFLDUUBFDRDDLFUFBLLLDRFDRBBRURB",
-    "F' B' U' B2 D' F L U' B R' D2 L2 U2 F2 D B2 U' F2 U2 L2 "),
-
-    ("BFRFUBBLBLRFDRBDUUUBDFFRLFFULLDDRFDRDULLLRRLFDDRUBUBBU",
-    "L F2 R F' U2 R F' L F R U F2 D2 R2 U R2 L2 B2 D2 F2 "),
-
-    ("BFDDURFBRDBLURLBUUDLFRFBDRURURLDLFFFUBLFLDUFBBRLDBDRUL",
-    "L2 U R2 B L' F L' F' R' L F R2 U2 R2 U F2 U F2 D R2 D2 "),
-
-    ("LRBUULRDRDBLLRBDDUFRFDFURLLBFBUDBBFLFBUDLFURDUFDRBLFUR",
-    "R' B' D' R2 L B' L D L' B' U2 L2 D2 R2 B2 U' L2 D' F2 B2 "),
-
-    ("RBBDUBBRRFLDFRFFRRDUUFFUDFULLLLDBBLBDBRDLRLUFLUFDBRUDU",
-    "U2 F2 U' D2 F U' R B' U L F B2 U D B2 R2 U2 B2 D' F2 "),
-
-    ("FRBUURUDBLBRDRLDFDRBDDFLUFFLULDDLBLRLBFFLRUFBDUUUBRFBR",
-    "D B' U' D' F' U2 F' R F D2 F B2 U D2 F2 R2 D2 L2 F2 D' B2 "),
-
-    ("FLURURDBRBDBBRUUUUFLDFFULUFFLRDDRLBRLFRFLLBBDLDUFBDBRD",
-    "F' U' F2 D2 F2 L' B' R2 U' R F U B2 D L2 D' F2 R2 D L2 U2 "),
-
-    ("BULRUULFRDBDDRLUDRULFFFBLUBDRLFDLURBDBFLLDFRBFFRUBBUDR",
-    "U' F2 R' D2 L2 U2 F' B' R' F' B2 U2 D L2 F2 L2 D' F2 U2 F2 "),
-
-    ("FFRRULFBDRFBURLFBUDLBRFFDBRBUUDDDLRLRULRLDULLUDDUBFFBB",
-    "U F D' B' U D' F L2 U R F' R2 F2 U' R2 F2 D' R2 U D' B2 "),
-
-    ("DUFBUDBRDBRUFRURRBDFLLFDDLBLFULDURBLFDRDLBUUFLBRFBLURF",
-    "U L2 B D' L' U B' R2 L2 D' R F2 B2 R2 U2 B2 U' D2 F2 B2 R2 "),
-
-    ("DRRUURBRURUBDRLUBFDBFBFBLFLDRFFDULLDLFRDLLUDBUDFUBLRFB",
-    "F2 B D2 R B' U2 B2 D2 F' L B2 R2 F2 L2 U' L2 U' R2 B2 U "),
-
-    ("BRLFUDLDRFLUFRUFFLFBURFRUUDFBRUDDRRBRLDLLBDLLBUUFBBDDB",
-    "F2 D L F' B' L' F2 D F' U' R U F2 L2 F2 L2 F2 U2 L2 U' R2 "),
-
-    ("UULFUFDLRFDBBRDBLFLFULFUDDURBRRDDURDFUFLLBBFBDRLRBURBL",
-    "F' R U B2 D B U2 R' L' F' L' D' F2 R2 U F2 L2 U2 B2 U B2 "),
-
-    ("DUDUUUDBUFRFRRBRDUBLLUFDUBFBDDFDLUFFRBLFLFBRRLLBRBDRLL",
-    "B2 L U B' R' F2 B D2 R2 U2 R' U' R2 D' R2 D' R2 U B2 U' R2 "),
-
-    ("LDRLUDRLFURBRRRRDDBBRFFUUBFLUDUDLLBFUFDFLUBLBUBFFBDLRD",
-    "D F2 R' L2 D' B2 R' D' L B U' F2 R2 B2 R2 F2 U B2 U D "),
-
-    ("FUBUUFLBLURRDRFFUDDUFBFRUBDBLRRDLBFFURBLLDLBRDFRLBDLDU",
-    "F R' U L B' U' R2 L F D' F' D L2 D B2 U' B2 U2 R2 B2 L2 "),
-
-    ("DFRBURUDDLBDRRFUDULLFLFUULFFBRRDRFBRBDBFLUDFLBULDBLBUR",
-    "U F2 R B' U L' U2 L' U' B2 L F U' R2 D2 F2 R2 D2 B2 D B2 U' "),
-
-    ("RLRUURDLFUFDBRLFRBLFRFFDDLUFULRDUDFLUBFRLULBRBDBBBDUDB",
-    "U2 F2 D' F' L' F' B' U B' R' L2 B' U' F2 L2 D L2 U' F2 U2 L2 U2 "),
-
-    ("BBURULRUULFLBRRBFBDFBFFDFRDUULUDRDDUDBFLLDFBRFLRDBURLL",
-    "U F D L2 U2 R' L U2 B2 R B' D' R2 D' F2 B2 D F2 D L2 D2 "),
-
-    ("LBLLUBUFUBRUURFDLRRLRDFLDFLFRBRDDLBDFBFRLFFDRBUDUBUBDU",
-    "U L' D2 B U B D2 F R B U2 R' D' R2 U L2 D R2 D2 R2 D2 F2 "),
-
-    ("FUFBUBURDFLRDRFBUFLDRFFLBDDDBLFDLURLLUBFLURDRURULBRDBB",
-    "B' R L F U' B' U L U R' B U L2 U2 L2 F2 U' F2 L2 B2 U2 "),
-
-    ("RURFUDDDFLBBFRULUBFFUDFLDLDRBFBDLBDLFRRULRDRBURUBBFULL",
-    "U' D' R B2 U R2 F2 R' F' L' U' F2 B2 R2 D B2 U2 R2 U2 R2 "),
-
-    ("DBRDULBFBUDUDRRULLDRLLFRLBRFUBUDUDDFBFRBLFRFDFLLUBRUBF",
-    "L' U R2 L F2 D2 B' U' L U2 R2 U D' R2 D' F2 R2 F2 "),
-
-    ("URBLUBFDUBRRLRFLULRLRBFFLDDBFFLDRFFBRBDBLUUUUDDFRBDDUL",
-    "U' R L' F' R' U B R2 U B2 R' F2 R2 B2 U2 D R2 U D2 F2 U2 "),
-
-    ("BUULURRDFRURFRBUFUBLDDFLFBFDRRBDRUULLBDRLFBULBFDDBDFLL",
-    "R D L' U' R2 B' L2 B2 U F' D' R U2 D' F2 R2 F2 D' F2 U L2 D "),
-
-    ("FURBUDLRRUBDFRLBDFBUBFFRUDDRRLDDFULLRUUBLULLFBLDBBRDFF",
-    "R B' U' F' B2 L2 D2 R' U2 F' L D L2 U2 D' F2 L2 U R2 B2 R2 "),
-
-    ("LLRDUBUBBURBBRBLRRRLLLFUBFDDRFFDUULFDFFDLULURUDBDBRDFF",
-    "R2 L2 U' B' U2 L' B' R L' D2 B D F2 B2 L2 U' F2 D B2 U "),
-
-    ("FDRUUBBBLDRBDRLFFFDUBLFRBURURUFDRFFUDLRFLBDLLUBLDBDLUR",
-    "U D2 B' U' L' U' F U' B R' D2 L D' B2 U2 R2 D R2 L2 B2 "),
-
-    ("FBBDULLFRUBRLRLDFUDRBBFFUURLLFUDDDBLURBFLRFRBDURDBUFDL",
-    "U R' D L' U2 D L U2 L' D2 F' R D' L2 U2 R2 D' F2 R2 D' F2 D2 "),
-
-    ("LLBDURRDURBDLRLRULBBFBFDDBBFUUFDRLFFBRDFLLDDRLUUFBRUUF",
-    "U2 L' U2 B' R L2 U R' F2 R' B D R2 U2 D R2 F2 D R2 L2 F2 "),
-
-    ("LFFDUBLRDLLDURLBDFDUFLFFFDUUBRRDRDBUBLBRLUBBRRDUFBFLUR",
-    "D2 B2 L' F R' L' B' L2 F2 D' R' U2 B2 D2 B2 D L2 U F2 D' F2 "),
-
-    ("FBUDUBBRBUURLRRUFLDBLLFDRFFDLRFDRFUBDBRRLUUDFBLLUBDDFL",
-    "R2 U R F' U R2 D2 B' R' B' R' U2 F2 D F2 U F2 D2 L2 B2 D' "),
-
-    ("ULBFURBDBDDDFRRBFFUBRLFUFRURBRUDDDLURRLLLFFBDLDFUBULBL",
-    "F2 L U' R' B2 L' D B2 L B' D' B2 U B2 L2 U B2 L2 D2 R2 "),
-
-    ("DUBBUFLFFLRLDRBBLRDUUDFLLRRFBDDDURRUFLBFLRBFDUBRDBLFUU",
-    "D' F' D' L' F2 D F D2 R' L2 D2 R2 D B2 D B2 L2 U R2 "),
-
-    ("BRDFUUUUULBFDRDDDFRLBUFRLBBUDRFDLBLDRRFBLFDLFLUUFBRRBL",
-    "L' U R' F B2 D F R B R L2 D R2 U2 F2 R2 B2 R2 U R2 "),
-
-    ("DBRLUFFUBDLFBRFLBLLFRFFUBLBRUDDDDFUULDUBLRRRUDLFDBRBRU",
-    "R2 B2 R' L' F2 R2 B' D L U B D B2 R2 D' R2 D B2 D2 F2 "),
-
-    ("LLURULDUDLBLURBBRFRFFRFLFRURBRFDDBBRDFBFLULDDFDBUBLUDU",
-    "U F D' R' B' U R' F' D' F U2 L B2 U2 D L2 F2 L2 U F2 L2 U "),
-
-    ("UFLRULBLUBUBBRFRDFDFRBFLFUFLRDDDRBBLRFRBLULLUDDFUBDDRU",
-    "U R L' D2 B' L F2 U F L2 U2 L D' R2 D2 R2 B2 U' L2 F2 D' L2 "),
-
-    ("BRRLUFBFFLRFDRUDLURDUFFRULFRDLRDUDBBLFULLUBUFDBDBBBLDR",
-    "U' D' F D' B' L2 F' R D' F B R2 F2 R2 D' R2 F2 U2 D R2 F2 "),
-
-    ("DRDUUBRRLBLLRRLUFDUFULFBFDLULFDDUDBBFRBDLUFFRBDRFBBRUL",
-    "L' B R D' L B R D' F2 U2 F L2 F2 U B2 D F2 R2 D' B2 D2 "),
-
-    ("LLFLUBRURDLUFRDRURUBFRFULBDDRBRDRLDUBUBDLDDFBLFUBBFFLF",
-    "L B' R' U' F L U D2 B' R B2 R2 F2 D2 B2 U2 D B2 L2 U2 "),
-
-    ("LLBRUFUBBUURURDLLRBDLRFBBLFLUUDDFRRFFDRRLFUFDDBDLBBDUF",
-    "F L' U D B' L' U' D R' U2 F' D2 R2 U2 L2 F2 U L2 B2 L2 U "),
-
-    ("FLLUUULLULBDRRFUFDUDBBFBBFRLRBBDURDBURFDLLFDDFURLBRRFD",
-    "F2 B2 U2 B' U F2 D2 F B2 R F R2 U R2 D R2 L2 B2 U F2 D2 "),
-
-    ("FURFUDBUDFLBFRBDRDUBRBFRULBFFRBDULDFUULRLRBDLULRLBDLFD",
-    "U R L D R B U D F2 B2 R' U L2 B2 R2 U F2 D R2 B2 U' "),
-
-    ("BFFBUFUBFDRDDRDFRDBRLFFBBDUDLLBDUUFLUURLLLFLRRDLRBUBUR",
-    "F' B' U2 R' F' B2 R' F2 L U' R U' B2 L2 D L2 D B2 D' F2 D "),
-
-    ("UFFDUULUUBFRLRFLDUDLRRFBBRDDUFDDFFBLLLBRLDDBRURBLBBFUR",
-    "U D' F' R2 L' B2 R' L' D' L2 F' D' L2 U2 R2 F2 D' R2 F2 D' "),
-
-    ("DDRBUUBUFUBFURLBRFDFRRFRFFULLRDDBLULBDRLLFUFUDRLDBBDLB",
-    "U' R' B2 R F' R U2 D F2 U2 R' U' R2 U R2 D' B2 L2 F2 D2 "),
-
-    ("BDRLUBDBDFRBFRRBFFRURRFUDDDLLLUDLFDUUUBBLFRRFUBLDBLLFU",
-    "R2 F D L' D B U' L' D2 R' B' R2 D R2 F2 U' R2 D' F2 U' "),
-
-    ("RFLUUFFDFDRBLRBRBRULLBFFUUFFFDLDDUDDURRBLRBULDDBLBUBRL",
-    "F2 L B2 U2 B' L' D R' U R' F2 U F2 B2 R2 D' F2 B2 U' F2 "),
-
-    ("DURFULUBUFDFLRFRUBLRLRFBFDBUBUFDRDFRBRBULDFLRDLLDBBDUL",
-    "U L B2 R2 D' R B D2 F R L F R2 D R2 B2 D2 F2 U' D2 L2 B2 "),
-
-    ("BRDFUBUBULULRRUDFUFRBDFUDFFRDLDDLFLFRULLLRDBBBFULBBRDR",
-    "F2 R D L B2 U L2 B' R' U D' F' R2 F2 R2 D F2 U2 D B2 R2 U' "),
-
-    ("LFDLUUDRDBBBRRUBFLFFLBFURDUFBRUDDUBFFDRRLLBLURLDFBDURL",
-    "D' R B L' D R' D2 R F B L' U' R2 U' F2 L2 U' L2 D R2 U2 "),
-
-    ("FUDLUBDLFLRBURFUDLLDUFFLBUFURRBDFRDBRFFDLRBLLRBDUBRDBU",
-    "F' U D2 B2 L B' U' R2 F2 R' D' L2 U' B2 L2 D' R2 L2 B2 D "),
-
-    ("LUFFUURDFDLURRDBBFUBLUFFBRDDDLLDRRLDBLBBLRUDRLFUFBURBF",
-    "L F' L2 F D2 R2 L2 B2 U' F U D R2 D' B2 L2 F2 R2 U2 D' "),
-
-    ("URDBUDLLBDFLBRUDLFBDRBFDDURLLFRDBULRBUUDLRLUFBFRFBRUFF",
-    "B2 U2 L' B' R L2 F B R2 L F' U' B2 U B2 R2 U' R2 F2 B2 L2 "),
-
-    ("RLFDUFFBLDUDBRLDFFLDBUFULLBBDRRDDFURURURLLLBURFBBBFURD",
-    "U F' R2 F2 U' R F R2 D F2 R' F' D B2 U2 R2 B2 U2 R2 D F2 R2 "),
-
-    ("BRDBUFBFBUURBRRFUUDLLDFDDDRLFULDLBULRURLLRDBFFFUBBDFRL",
-    "F' D B2 R' L2 U2 B L' F' D L' U R2 U' L2 B2 D2 B2 D2 L2 B2 "),
-
-    ("BRBFUURBFRRDURLBDDFRDFFBBLRUDDLDRUBFRUUFLDLULLFUBBLLDF",
-    "U F' B R' D B' R U R' F U' L U' B2 U2 L2 U' R2 B2 L2 U F2 "),
-
-    ("FLDRUBBRUBDRBRRLRFDFRDFUUUBFFDDDUULRDDRLLFBLLFULBBFUBL",
-    "U R F' U' L' F R2 F R' U2 B L' F2 B2 U F2 L2 D L2 D R2 U2 "),
-
-    ("BFRLURUFFLFBBRRDLDLLUDFRULFRDLFDURBRLBBRLBDUFUDDDBUFUB",
-    "R B' D' L' U R D L' D R2 F D2 F2 D' R2 L2 B2 R2 U' R2 "),
-
-    ("BDFBUUFDLUFDLRUFURDBFLFDUURLBUDDRDLBDRLFLFLRBRFRLBRUBB",
-    "R L2 U F R2 D2 R' L2 U F' D' L' U' B2 U' L2 U F2 R2 D2 L2 D "),
-
-    ("FDLBUBRLUBUFDRURRBDURFFLLDUDFFRDFDLLDLFRLUBBBUBLRBDUFR",
-    "U R D' R U' B2 D2 R' B' D' F' L' U L2 D' F2 L2 D F2 U2 L2 U "),
-
-    ("BBFRURDDLBFRDRFDLDFLUDFRFDFLBLUDBRULDURULFBLUURRLBFBBU",
-    "U' F' D2 B' L' U2 R2 D R D2 R' F2 U L2 F2 D B2 D2 L2 D' R2 "),
-
-    ("BDBBULRBRFBLLRDFFBURUDFUDUULFLUDRRFDDUBLLRFRFUBRLBFLDD",
-    "U B' L' B L F B D' R L' F R U L2 F2 B2 D F2 D2 R2 U D2 "),
-
-    ("URLBULDDULDBBRLRRFRRBFFLFLFDFDUDUURRBUBBLDLFLDFRUBDUBF",
-    "U L2 U D2 R' D B2 L F D L2 B' R2 B2 D2 F2 U2 L2 F2 L2 U L2 "),
-
-    ("LDUFULFRURDRLRULBDDFFRFBFBURDBBDUBFLULLDLURRDBFFLBRBUD",
-    "F' U2 D' F U' F2 U' F D B' L' D2 F2 U R2 U' L2 B2 U' B2 U2 "),
-
-    ("FDBBUDUBRDBLLRFBRRBUFRFULDDUFLFDURLUDRRLLDDUFULLRBFFBB",
-    "R2 F' R L' U R' U2 F' D2 F R U' R2 U L2 U' B2 L2 U2 D B2 "),
-
-    ("UFBBURLLBRFDBRRFURBDUDFLDBDLDRFDLUBDRUUFLRLDFLLFUBUBRF",
-    "R D F' L F' L2 B' U' D' R D B' U2 F2 U' L2 B2 U' L2 D R2 L2 "),
-
-    ("DURBULRULBUDRRRLDLDBULFFFBBULDDDRBBFLDFDLFUFRBFFUBLURR",
-    "F U' R F' R L D2 L' B' D R F2 U' R2 B2 D R2 D2 R2 L2 B2 "),
-
-    ("UFBLURRDLDURRRLUFFFBBFFDULRFFBRDUFBDLBUDLRLBLDDBUBLRUD",
-    "B U R' D2 R2 D' B2 U' R B' U R2 D2 R2 B2 U F2 D' B2 U' "),
-
-    ("FLBUUDFBDBFURRRUBLLULRFFLLFBDRBDLDRDRLUFLDBDURFDBBUFUR",
-    "U' D' R' F' R2 U' D2 F U' L U R2 U2 L2 F2 R2 L2 U' F2 D' "),
-
-    ("DRLUUBFBRBLURRLRUBLRDDFDLFUFUFFDBRDUBRUFLLFDDBFLUBLRBD",
-    "D2 R' D' F2 B D R2 D2 R' F2 D' F2 U' B2 L2 U2 D R2 U "),
-]
-
-if __name__ == '__main__':
-
-    cmd = './solve'
-
-    if len(sys.argv) > 1:
-        fname = sys.argv[1]
-        logging.info('loading tests from %s', fname)
-        with open(fname) as f:
-            cnt = 0
-            t = f.readline()
-            while t:
-                logging.info('running test %d...' % (cnt + 1))
-                t = t.strip()
-                r = f.readline().strip()
-                res = subprocess.check_output([cmd, t], stderr=open(os.devnull, 'wb')).strip()
-                if res != r:
-                    logging.error('Error for %s:\n\tmust be: %s\n\tgot: %s' % (t, `r`, `res`))
-                    sys.exit(1)
-                cnt += 1
-                t = f.readline()
-            logging.info('all %d tests passed' % cnt)
-    else:
-        for i, tst in enumerate(javares):
-            logging.info('running test %d of %d...' % (i + 1, len(javares)))
-            t, r = tst
-            res = subprocess.check_output([cmd, t], stderr=open(os.devnull, 'wb')).strip()
-            if res != r.strip():
-                logging.error('Error for %s:\n\tmust be: %s\n\tgot: %s' % (t, `r`, `res`))
-                sys.exit(1)
-        logging.info('all %d tests passed' % len(javares))
diff --git a/javares.txt b/tests/javares.txt
similarity index 100%
rename from javares.txt
rename to tests/javares.txt
diff --git a/tests/test_solve.py b/tests/test_solve.py
new file mode 100644
index 0000000..e447ca4
--- /dev/null
+++ b/tests/test_solve.py
@@ -0,0 +1,333 @@
+from kociemba import solve
+import pytest
+
+
+# these results were produced by original Kociemba's Java implementation
+@pytest.mark.parametrize("input,expected", [
+    ("BBURUDBFUFFFRRFUUFLULUFUDLRRDBBDBDBLUDDFLLRRBRLLLBRDDF",
+     "B U' L' D' R' D' L2 D' L F' L' D F2 R2 U R2 B2 U2 L2 F2 D'"),
+
+    ("FDLUUURLFLBDFRRDLBBBUBFLDDLFBBUDUBRLURDFLRUFRFLRFBDUDR",
+     "U F' L2 U F' L2 F L2 F2 D L' F' U2 B2 D F2 D' R2 L2 D F2 U'"),
+
+    ("UDRFULDRBLDUBRDUFBFBDRFDFURLBBLDRDURLLRULUFBUFRBFBFDLL",
+     "F U2 D2 L' F2 D' B R L2 U F U F2 D2 B2 D R2 U2 F2 L2 B2"),
+
+    ("LRLLURRLBDUULRFUFLFDRUFBRBLDUFDDRRBDDFURLLBFFBDBUBBFDU",
+     "B2 D' R2 F U R F' D2 L' B D F2 R2 L2 U' B2 D2 B2 U B2"),
+
+    ("UUULULFLFDUBDRRDBBUFLFFLBRRLDFFDDBUUFBRRLDRUDLBLFBBRRD",
+     "U2 F' D F U F' U F2 R' F R' D2 R2 F2 U2 D B2 U2 L2 F2"),
+
+    ("LRRFUUBDLFBBLRDLLRUFDLFURLFBBUBDDDDUDULRLFRRDUUBRBFFBF",
+     "R' B' D' R' B' L F2 U' D F' R2 L2 U' R2 F2 U R2 U B2 D'"),
+
+    ("FBRDULFBRFBBRRRDLBRRUDFUUDFLBLFDUBFDLLDLLFRRBUUUDBFLUD",
+     "U F R' D' R' U2 L D B' R L' U' B2 L2 U2 D2 B2 R2 D L2 B2"),
+
+    ("FLBUULFFLFDURRDBUBUUDDFFBRDDBLRDRFLLRLRULFUDRRBDBBBUFL",
+     "U2 D B' U2 R' D2 L2 D R2 L B' U' L2 D L2 D F2 L2 B2 U'"),
+
+    ("UBLLURBDLDDFRRLRFLDFBLFURFFFLDBDULBUBDRRLBDDUUURUBFBRF",
+     "U' R2 F U2 R' L' F' L U D' R' U' R2 B2 L2 B2 L2 U2 R2 D' F2"),
+
+    ("UDLFUBLRFRDDLRFDBDBBDDFUUUBFRRLDUFFLBLUFLRRBLFLRUBDBRU",
+     "U R' L F L' U' F' D R F' L' B2 U L2 B2 D L2 U2 R2 B2 D"),
+
+    ("URBLUBDDBURDLRDLDBFBLLFFULDBBFUDFLRRRURBLDFFRLUFRBUDFU",
+     "U2 R2 F' R B' D2 B L' B U' R2 B L2 F2 U2 F2 U' R2 D' L2 D R2"),
+
+    ("BLBDUULUDBLRDRFLBUUBLRFFURDLDFRDRRUFRBFLLUFFBDDULBBRFD",
+     "U2 D2 B' D' F B L2 F2 L D2 L' U F2 U L2 D L2 U2 L2 D F2"),
+
+    ("ULFUUURRURLLLRRUBLDFFLFFBDRURBRDDDFBFBFFLDBBLDBLUBDDUR",
+     "U2 B2 L2 B' D R U2 B2 L' U D2 F' U F2 L2 U2 D' R2 F2 U2 D' F2"),
+
+    ("LUFBUUUDDLLRDRRDDLBFFFFRUDBLLRRDBRBFDURFLRFUBUFBBBLULD",
+     "D' L B2 U' F' B U B' R2 D2 R' B2 L2 U R2 U B2 R2 U' F2 D2"),
+
+    ("UDDBURDDBUFLFRLFDFRRLRFLUBRFDUBDFRFLBLBRLUFULBLRUBBDUD",
+     "U2 B' U' B' R' F2 U' L' F' D B U F2 D2 F2 D F2 R2 U2 F2 D'"),
+
+    ("UUBUUBUDBDRLFRFDUDBBRBFRFBRUUFDDLLDFFRRDLLBRRUFLLBFLLD",
+     "U2 R' B2 U' F2 D B R F2 R U2 B2 U2 R2 U' F2 U2 R2 D'"),
+
+    ("BDLRULLRRDFFBRLDRLBFFFFUUDBBRRLDURDDLBULLUUBRUBDUBDFFF",
+     "F2 D' L2 U B' D B L F' B U' L2 D2 L2 B2 U R2 F2 U F2"),
+
+    ("LFRUULBBDBFBDRBLFRDDLLFLFRDRBFDDUBUUURRFLBLRDURFUBDFLU",
+     "R' D' F' R U' L2 D2 R D L' D' F2 D' R2 U' R2 F2 B2 L2 U2"),
+
+    ("UBBRUDBLFRBRRRUFBBLFDDFFFULUFDDDLBLUFUDBLRLFRDULLBRRDU",
+     "R' U B R U' R D' R2 L' F' R' F2 R2 U L2 D' B2 U2 L2 D'"),
+
+    ("FRRUUFURDBLFRRFFLUBDLRFBLFUFULLDDBBBULRDLURBDDFRDBBLUD",
+     "U R2 U F R' B' R F2 D F' L' D' R2 D B2 D' L2 B2 D R2 L2"),
+
+    ("ULDFUBBRRBDLFRBFFLUUDBFLRFDUDRLDUFUDRRLDLUUDBBBFRBRFLL",
+     "F' B' L' U D B U2 F' B' D2 R' B2 U L2 D' F2 R2 D2 R2 U R2"),
+
+    ("ULLLURFBBDUBBRUBLFURRDFDRFUDRRFDBUULLURRLLLDFDFBBBDDFF",
+     "U' F2 D2 B2 R2 U B R B U L' B' U B2 D B2 R2 D L2 U D2"),
+
+    ("BDBDURFFRDFDRRLUBLLLFBFURFBBULDDURLDRFURLRUBDLLUUBDFBF",
+     "U2 B2 U' F' D' R2 U F2 D' L' B R2 B2 U' B2 U' B2 D' B2 R2 U'"),
+
+    ("DRUUUDDBRULLBRBFFLLLBFFDBURLFUUDLRRURRFFLDFLDFDBUBRBBD",
+     "D F R L B2 L' B U F' D' R U B2 U F2 U B2 U2 F2 U' L2"),
+
+    ("BDLLURUFRDBDRRRDFURLFLFUBFLRDBLDUBBLDDFFLBLUUFBRDBRFUU",
+     "L' D R' U' B D F D F2 B' R B2 U' L2 U' F2 U D F2 R2 D2"),
+
+    ("RRRUURUUBDDBFRBFLURLRFFRLULDBDLDBLLLDFFULDUDBUBFDBRFFB",
+     "U D2 R' F' R' U' B R' U' L F2 B2 U2 B2 D' F2 D R2 F2 D2"),
+
+    ("LFRLUUBBLBFUDRRUUFDDUDFFULLBUFLDBLFDFDRBLRBBRFRDUBRRLD",
+     "F2 R U' F D2 B D B' L U2 R U F2 U2 R2 U2 R2 U' B2 D'"),
+
+    ("FRRBUBDDURLBDRDLUDRLFLFBLBFDUUFDRLUFRRBRLFUUBUDDFBFLLB",
+     "U2 D F' B' R' D' L B' R B R L2 D2 L2 F2 U B2 R2 B2 D2 F2"),
+
+    ("DBUFUFDFUBLLLRURUBLRRDFBFLDUUBFDRDDLFUFBLLLDRFDRBBRURB",
+     "F' B' U' B2 D' F L U' B R' D2 L2 U2 F2 D B2 U' F2 U2 L2"),
+
+    ("BFRFUBBLBLRFDRBDUUUBDFFRLFFULLDDRFDRDULLLRRLFDDRUBUBBU",
+     "L F2 R F' U2 R F' L F R U F2 D2 R2 U R2 L2 B2 D2 F2"),
+
+    ("BFDDURFBRDBLURLBUUDLFRFBDRURURLDLFFFUBLFLDUFBBRLDBDRUL",
+     "L2 U R2 B L' F L' F' R' L F R2 U2 R2 U F2 U F2 D R2 D2"),
+
+    ("LRBUULRDRDBLLRBDDUFRFDFURLLBFBUDBBFLFBUDLFURDUFDRBLFUR",
+     "R' B' D' R2 L B' L D L' B' U2 L2 D2 R2 B2 U' L2 D' F2 B2"),
+
+    ("RBBDUBBRRFLDFRFFRRDUUFFUDFULLLLDBBLBDBRDLRLUFLUFDBRUDU",
+     "U2 F2 U' D2 F U' R B' U L F B2 U D B2 R2 U2 B2 D' F2"),
+
+    ("FRBUURUDBLBRDRLDFDRBDDFLUFFLULDDLBLRLBFFLRUFBDUUUBRFBR",
+     "D B' U' D' F' U2 F' R F D2 F B2 U D2 F2 R2 D2 L2 F2 D' B2"),
+
+    ("FLURURDBRBDBBRUUUUFLDFFULUFFLRDDRLBRLFRFLLBBDLDUFBDBRD",
+     "F' U' F2 D2 F2 L' B' R2 U' R F U B2 D L2 D' F2 R2 D L2 U2"),
+
+    ("BULRUULFRDBDDRLUDRULFFFBLUBDRLFDLURBDBFLLDFRBFFRUBBUDR",
+     "U' F2 R' D2 L2 U2 F' B' R' F' B2 U2 D L2 F2 L2 D' F2 U2 F2"),
+
+    ("FFRRULFBDRFBURLFBUDLBRFFDBRBUUDDDLRLRULRLDULLUDDUBFFBB",
+     "U F D' B' U D' F L2 U R F' R2 F2 U' R2 F2 D' R2 U D' B2"),
+
+    ("DUFBUDBRDBRUFRURRBDFLLFDDLBLFULDURBLFDRDLBUUFLBRFBLURF",
+     "U L2 B D' L' U B' R2 L2 D' R F2 B2 R2 U2 B2 U' D2 F2 B2 R2"),
+
+    ("DRRUURBRURUBDRLUBFDBFBFBLFLDRFFDULLDLFRDLLUDBUDFUBLRFB",
+     "F2 B D2 R B' U2 B2 D2 F' L B2 R2 F2 L2 U' L2 U' R2 B2 U"),
+
+    ("BRLFUDLDRFLUFRUFFLFBURFRUUDFBRUDDRRBRLDLLBDLLBUUFBBDDB",
+     "F2 D L F' B' L' F2 D F' U' R U F2 L2 F2 L2 F2 U2 L2 U' R2"),
+
+    ("UULFUFDLRFDBBRDBLFLFULFUDDURBRRDDURDFUFLLBBFBDRLRBURBL",
+     "F' R U B2 D B U2 R' L' F' L' D' F2 R2 U F2 L2 U2 B2 U B2"),
+
+    ("DUDUUUDBUFRFRRBRDUBLLUFDUBFBDDFDLUFFRBLFLFBRRLLBRBDRLL",
+     "B2 L U B' R' F2 B D2 R2 U2 R' U' R2 D' R2 D' R2 U B2 U' R2"),
+
+    ("LDRLUDRLFURBRRRRDDBBRFFUUBFLUDUDLLBFUFDFLUBLBUBFFBDLRD",
+     "D F2 R' L2 D' B2 R' D' L B U' F2 R2 B2 R2 F2 U B2 U D"),
+
+    ("FUBUUFLBLURRDRFFUDDUFBFRUBDBLRRDLBFFURBLLDLBRDFRLBDLDU",
+     "F R' U L B' U' R2 L F D' F' D L2 D B2 U' B2 U2 R2 B2 L2"),
+
+    ("DFRBURUDDLBDRRFUDULLFLFUULFFBRRDRFBRBDBFLUDFLBULDBLBUR",
+     "U F2 R B' U L' U2 L' U' B2 L F U' R2 D2 F2 R2 D2 B2 D B2 U'"),
+
+    ("RLRUURDLFUFDBRLFRBLFRFFDDLUFULRDUDFLUBFRLULBRBDBBBDUDB",
+     "U2 F2 D' F' L' F' B' U B' R' L2 B' U' F2 L2 D L2 U' F2 U2 L2 U2"),
+
+    ("BBURULRUULFLBRRBFBDFBFFDFRDUULUDRDDUDBFLLDFBRFLRDBURLL",
+     "U F D L2 U2 R' L U2 B2 R B' D' R2 D' F2 B2 D F2 D L2 D2"),
+
+    ("LBLLUBUFUBRUURFDLRRLRDFLDFLFRBRDDLBDFBFRLFFDRBUDUBUBDU",
+     "U L' D2 B U B D2 F R B U2 R' D' R2 U L2 D R2 D2 R2 D2 F2"),
+
+    ("FUFBUBURDFLRDRFBUFLDRFFLBDDDBLFDLURLLUBFLURDRURULBRDBB",
+     "B' R L F U' B' U L U R' B U L2 U2 L2 F2 U' F2 L2 B2 U2"),
+
+    ("RURFUDDDFLBBFRULUBFFUDFLDLDRBFBDLBDLFRRULRDRBURUBBFULL",
+     "U' D' R B2 U R2 F2 R' F' L' U' F2 B2 R2 D B2 U2 R2 U2 R2"),
+
+    ("DBRDULBFBUDUDRRULLDRLLFRLBRFUBUDUDDFBFRBLFRFDFLLUBRUBF",
+     "L' U R2 L F2 D2 B' U' L U2 R2 U D' R2 D' F2 R2 F2"),
+
+    ("URBLUBFDUBRRLRFLULRLRBFFLDDBFFLDRFFBRBDBLUUUUDDFRBDDUL",
+     "U' R L' F' R' U B R2 U B2 R' F2 R2 B2 U2 D R2 U D2 F2 U2"),
+
+    ("BUULURRDFRURFRBUFUBLDDFLFBFDRRBDRUULLBDRLFBULBFDDBDFLL",
+     "R D L' U' R2 B' L2 B2 U F' D' R U2 D' F2 R2 F2 D' F2 U L2 D"),
+
+    ("FURBUDLRRUBDFRLBDFBUBFFRUDDRRLDDFULLRUUBLULLFBLDBBRDFF",
+     "R B' U' F' B2 L2 D2 R' U2 F' L D L2 U2 D' F2 L2 U R2 B2 R2"),
+
+    ("LLRDUBUBBURBBRBLRRRLLLFUBFDDRFFDUULFDFFDLULURUDBDBRDFF",
+     "R2 L2 U' B' U2 L' B' R L' D2 B D F2 B2 L2 U' F2 D B2 U"),
+
+    ("FDRUUBBBLDRBDRLFFFDUBLFRBURURUFDRFFUDLRFLBDLLUBLDBDLUR",
+     "U D2 B' U' L' U' F U' B R' D2 L D' B2 U2 R2 D R2 L2 B2"),
+
+    ("FBBDULLFRUBRLRLDFUDRBBFFUURLLFUDDDBLURBFLRFRBDURDBUFDL",
+     "U R' D L' U2 D L U2 L' D2 F' R D' L2 U2 R2 D' F2 R2 D' F2 D2"),
+
+    ("LLBDURRDURBDLRLRULBBFBFDDBBFUUFDRLFFBRDFLLDDRLUUFBRUUF",
+     "U2 L' U2 B' R L2 U R' F2 R' B D R2 U2 D R2 F2 D R2 L2 F2"),
+
+    ("LFFDUBLRDLLDURLBDFDUFLFFFDUUBRRDRDBUBLBRLUBBRRDUFBFLUR",
+     "D2 B2 L' F R' L' B' L2 F2 D' R' U2 B2 D2 B2 D L2 U F2 D' F2"),
+
+    ("FBUDUBBRBUURLRRUFLDBLLFDRFFDLRFDRFUBDBRRLUUDFBLLUBDDFL",
+     "R2 U R F' U R2 D2 B' R' B' R' U2 F2 D F2 U F2 D2 L2 B2 D'"),
+
+    ("ULBFURBDBDDDFRRBFFUBRLFUFRURBRUDDDLURRLLLFFBDLDFUBULBL",
+     "F2 L U' R' B2 L' D B2 L B' D' B2 U B2 L2 U B2 L2 D2 R2"),
+
+    ("DUBBUFLFFLRLDRBBLRDUUDFLLRRFBDDDURRUFLBFLRBFDUBRDBLFUU",
+     "D' F' D' L' F2 D F D2 R' L2 D2 R2 D B2 D B2 L2 U R2"),
+
+    ("BRDFUUUUULBFDRDDDFRLBUFRLBBUDRFDLBLDRRFBLFDLFLUUFBRRBL",
+     "L' U R' F B2 D F R B R L2 D R2 U2 F2 R2 B2 R2 U R2"),
+
+    ("DBRLUFFUBDLFBRFLBLLFRFFUBLBRUDDDDFUULDUBLRRRUDLFDBRBRU",
+     "R2 B2 R' L' F2 R2 B' D L U B D B2 R2 D' R2 D B2 D2 F2"),
+
+    ("LLURULDUDLBLURBBRFRFFRFLFRURBRFDDBBRDFBFLULDDFDBUBLUDU",
+     "U F D' R' B' U R' F' D' F U2 L B2 U2 D L2 F2 L2 U F2 L2 U"),
+
+    ("UFLRULBLUBUBBRFRDFDFRBFLFUFLRDDDRBBLRFRBLULLUDDFUBDDRU",
+     "U R L' D2 B' L F2 U F L2 U2 L D' R2 D2 R2 B2 U' L2 F2 D' L2"),
+
+    ("BRRLUFBFFLRFDRUDLURDUFFRULFRDLRDUDBBLFULLUBUFDBDBBBLDR",
+     "U' D' F D' B' L2 F' R D' F B R2 F2 R2 D' R2 F2 U2 D R2 F2"),
+
+    ("DRDUUBRRLBLLRRLUFDUFULFBFDLULFDDUDBBFRBDLUFFRBDRFBBRUL",
+     "L' B R D' L B R D' F2 U2 F L2 F2 U B2 D F2 R2 D' B2 D2"),
+
+    ("LLFLUBRURDLUFRDRURUBFRFULBDDRBRDRLDUBUBDLDDFBLFUBBFFLF",
+     "L B' R' U' F L U D2 B' R B2 R2 F2 D2 B2 U2 D B2 L2 U2"),
+
+    ("LLBRUFUBBUURURDLLRBDLRFBBLFLUUDDFRRFFDRRLFUFDDBDLBBDUF",
+     "F L' U D B' L' U' D R' U2 F' D2 R2 U2 L2 F2 U L2 B2 L2 U"),
+
+    ("FLLUUULLULBDRRFUFDUDBBFBBFRLRBBDURDBURFDLLFDDFURLBRRFD",
+     "F2 B2 U2 B' U F2 D2 F B2 R F R2 U R2 D R2 L2 B2 U F2 D2"),
+
+    ("FURFUDBUDFLBFRBDRDUBRBFRULBFFRBDULDFUULRLRBDLULRLBDLFD",
+     "U R L D R B U D F2 B2 R' U L2 B2 R2 U F2 D R2 B2 U'"),
+
+    ("BFFBUFUBFDRDDRDFRDBRLFFBBDUDLLBDUUFLUURLLLFLRRDLRBUBUR",
+     "F' B' U2 R' F' B2 R' F2 L U' R U' B2 L2 D L2 D B2 D' F2 D"),
+
+    ("UFFDUULUUBFRLRFLDUDLRRFBBRDDUFDDFFBLLLBRLDDBRURBLBBFUR",
+     "U D' F' R2 L' B2 R' L' D' L2 F' D' L2 U2 R2 F2 D' R2 F2 D'"),
+
+    ("DDRBUUBUFUBFURLBRFDFRRFRFFULLRDDBLULBDRLLFUFUDRLDBBDLB",
+     "U' R' B2 R F' R U2 D F2 U2 R' U' R2 U R2 D' B2 L2 F2 D2"),
+
+    ("BDRLUBDBDFRBFRRBFFRURRFUDDDLLLUDLFDUUUBBLFRRFUBLDBLLFU",
+     "R2 F D L' D B U' L' D2 R' B' R2 D R2 F2 U' R2 D' F2 U'"),
+
+    ("RFLUUFFDFDRBLRBRBRULLBFFUUFFFDLDDUDDURRBLRBULDDBLBUBRL",
+     "F2 L B2 U2 B' L' D R' U R' F2 U F2 B2 R2 D' F2 B2 U' F2"),
+
+    ("DURFULUBUFDFLRFRUBLRLRFBFDBUBUFDRDFRBRBULDFLRDLLDBBDUL",
+     "U L B2 R2 D' R B D2 F R L F R2 D R2 B2 D2 F2 U' D2 L2 B2"),
+
+    ("BRDFUBUBULULRRUDFUFRBDFUDFFRDLDDLFLFRULLLRDBBBFULBBRDR",
+     "F2 R D L B2 U L2 B' R' U D' F' R2 F2 R2 D F2 U2 D B2 R2 U'"),
+
+    ("LFDLUUDRDBBBRRUBFLFFLBFURDUFBRUDDUBFFDRRLLBLURLDFBDURL",
+     "D' R B L' D R' D2 R F B L' U' R2 U' F2 L2 U' L2 D R2 U2"),
+
+    ("FUDLUBDLFLRBURFUDLLDUFFLBUFURRBDFRDBRFFDLRBLLRBDUBRDBU",
+     "F' U D2 B2 L B' U' R2 F2 R' D' L2 U' B2 L2 D' R2 L2 B2 D"),
+
+    ("LUFFUURDFDLURRDBBFUBLUFFBRDDDLLDRRLDBLBBLRUDRLFUFBURBF",
+     "L F' L2 F D2 R2 L2 B2 U' F U D R2 D' B2 L2 F2 R2 U2 D'"),
+
+    ("URDBUDLLBDFLBRUDLFBDRBFDDURLLFRDBULRBUUDLRLUFBFRFBRUFF",
+     "B2 U2 L' B' R L2 F B R2 L F' U' B2 U B2 R2 U' R2 F2 B2 L2"),
+
+    ("RLFDUFFBLDUDBRLDFFLDBUFULLBBDRRDDFURURURLLLBURFBBBFURD",
+     "U F' R2 F2 U' R F R2 D F2 R' F' D B2 U2 R2 B2 U2 R2 D F2 R2"),
+
+    ("BRDBUFBFBUURBRRFUUDLLDFDDDRLFULDLBULRURLLRDBFFFUBBDFRL",
+     "F' D B2 R' L2 U2 B L' F' D L' U R2 U' L2 B2 D2 B2 D2 L2 B2"),
+
+    ("BRBFUURBFRRDURLBDDFRDFFBBLRUDDLDRUBFRUUFLDLULLFUBBLLDF",
+     "U F' B R' D B' R U R' F U' L U' B2 U2 L2 U' R2 B2 L2 U F2"),
+
+    ("FLDRUBBRUBDRBRRLRFDFRDFUUUBFFDDDUULRDDRLLFBLLFULBBFUBL",
+     "U R F' U' L' F R2 F R' U2 B L' F2 B2 U F2 L2 D L2 D R2 U2"),
+
+    ("BFRLURUFFLFBBRRDLDLLUDFRULFRDLFDURBRLBBRLBDUFUDDDBUFUB",
+     "R B' D' L' U R D L' D R2 F D2 F2 D' R2 L2 B2 R2 U' R2"),
+
+    ("BDFBUUFDLUFDLRUFURDBFLFDUURLBUDDRDLBDRLFLFLRBRFRLBRUBB",
+     "R L2 U F R2 D2 R' L2 U F' D' L' U' B2 U' L2 U F2 R2 D2 L2 D"),
+
+    ("FDLBUBRLUBUFDRURRBDURFFLLDUDFFRDFDLLDLFRLUBBBUBLRBDUFR",
+     "U R D' R U' B2 D2 R' B' D' F' L' U L2 D' F2 L2 D F2 U2 L2 U"),
+
+    ("BBFRURDDLBFRDRFDLDFLUDFRFDFLBLUDBRULDURULFBLUURRLBFBBU",
+     "U' F' D2 B' L' U2 R2 D R D2 R' F2 U L2 F2 D B2 D2 L2 D' R2"),
+
+    ("BDBBULRBRFBLLRDFFBURUDFUDUULFLUDRRFDDUBLLRFRFUBRLBFLDD",
+     "U B' L' B L F B D' R L' F R U L2 F2 B2 D F2 D2 R2 U D2"),
+
+    ("URLBULDDULDBBRLRRFRRBFFLFLFDFDUDUURRBUBBLDLFLDFRUBDUBF",
+     "U L2 U D2 R' D B2 L F D L2 B' R2 B2 D2 F2 U2 L2 F2 L2 U L2"),
+
+    ("LDUFULFRURDRLRULBDDFFRFBFBURDBBDUBFLULLDLURRDBFFLBRBUD",
+     "F' U2 D' F U' F2 U' F D B' L' D2 F2 U R2 U' L2 B2 U' B2 U2"),
+
+    ("FDBBUDUBRDBLLRFBRRBUFRFULDDUFLFDURLUDRRLLDDUFULLRBFFBB",
+     "R2 F' R L' U R' U2 F' D2 F R U' R2 U L2 U' B2 L2 U2 D B2"),
+
+    ("UFBBURLLBRFDBRRFURBDUDFLDBDLDRFDLUBDRUUFLRLDFLLFUBUBRF",
+     "R D F' L F' L2 B' U' D' R D B' U2 F2 U' L2 B2 U' L2 D R2 L2"),
+
+    ("DURBULRULBUDRRRLDLDBULFFFBBULDDDRBBFLDFDLFUFRBFFUBLURR",
+     "F U' R F' R L D2 L' B' D R F2 U' R2 B2 D R2 D2 R2 L2 B2"),
+
+    ("UFBLURRDLDURRRLUFFFBBFFDULRFFBRDUFBDLBUDLRLBLDDBUBLRUD",
+     "B U R' D2 R2 D' B2 U' R B' U R2 D2 R2 B2 U F2 D' B2 U'"),
+
+    ("FLBUUDFBDBFURRRUBLLULRFFLLFBDRBDLDRDRLUFLDBDURFDBBUFUR",
+     "U' D' R' F' R2 U' D2 F U' L U R2 U2 L2 F2 R2 L2 U' F2 D'"),
+
+    ("DRLUUBFBRBLURRLRUBLRDDFDLFUFUFFDBRDUBRUFLLFDDBFLUBLRBD",
+     "D2 R' D' F2 B D R2 D2 R' F2 D' F2 U' B2 L2 U2 D R2 U"),
+])
+def test_solve_function(input, expected):
+    assert solve(input) == expected
+
+
+if __name__ == '__main__':
+    import sys
+    import logging
+    logging.basicConfig(level=logging.DEBUG, format='%(asctime)s - %(levelname)s - %(message)s')
+    if len(sys.argv) > 1:
+        fname = sys.argv[1]
+        logging.info('loading tests from %s', fname)
+        with open(fname, 'rb') as f:
+            cnt = 0
+            t = f.readline()
+            while t:
+                logging.info('running test %d...' % (cnt + 1))
+                t = t.strip()
+                r = f.readline().strip()
+                res = solve(t)
+                if res != r:
+                    logging.error('Error for %s:\n\tmust be: %s\n\tgot: %s' % (t, repr(r), repr(res)))
+                    sys.exit(1)
+                cnt += 1
+                t = f.readline()
+            logging.info('all %d tests passed' % cnt)
+    else:
+        logging.error('Usage: %s <testfile.txt>', sys.argv[0])