The Einstein Collection Six Square Challenges
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- The Einstein Collection Six Square Challenges - 3D Brain training puzzles by Professor Puzzle.
- Contains an outer placeholder, 16 wooden cubes and 6 brain teasing challenges.
- Develop your problem solving skills - Work your way through the six different challenges by correctly arranging the set of wooden cubes.
- As part of the official Albert Einstein Collection, a set of puzzles and brain teasers by Professor Puzzle