IQ'biki – 3D puzzle. Promocodes

[nailer]

3D–puzzle IQ'biki comprises four colored cubes. The objective of the puzzle is to stack these cubes in a column so that each side of the stack shows each of the four colors.
This puzzle can be easy solved by graph-theoretic method, but solving this puzzle in the mind is more interesting and difficult.

Promocodes for Google Play:
AM4XPYH2DXPK1ZQAS12ATRJ
2A47BU9NM7R8GE0LZUN7SVX
AZ95HT88BBQ8F3H7FA8RHDF
62TGHUA64KZX2TN0JPBVX2E
M3SEHX7EQVLE28WRN4GZPEK
Q893ZEG85ZBL9Z8NKZW3D6J
X8JS3XUFVZDNXTG7D56Z2NX
Z3XXMRXVPE5B0KY6KQNY0KE
20ZKL0N1ZUS5S3E0UMC5EA7

 

[Unforgiven]

Good luck with the game.