CalmPlex MindBlockTM
Solutions Level 10
Numbers in (red) are
total solutions possible for that shape.

2 x 5 x 6 (1) Yes, only a single
solution
Now the challenge begins! Level 10 really sets the
tone of the remaining levels and shapes - extreme! I
have been selling this puzzle on the internet since
1998 and have received only 4 reports (bragging
rights) of the 2x5x6 being solved without the aid of a
computer.
This is one tough nut to crack!