Beat the Computer puzzles by Tenyo are 8 different mathematic jigsaw puzzles for adults.
Each piece of a puzzle is constructed of the same elements,
so the puzzler remeins insecure about reaching a solution until the last piece fits.
All 'Beat THE COMPUTER' puzzles are built of coloured plastic.
Upper and lower side of each piece can both be used, for asymetric pieces this means you can also use the mirror shape.