Mathemetic jigsaw puzzels

Ordinary jigsaw puzzles are good fun. When two pieces fit perfectly you are quite certain this is correct and you can continue with the remaining pieces. In fact the puzzle gets more simple after each placed piece. Normally there exists only one solution.

Links about normal jigsaw puzzles:
Jigsaw Puzzles at Crea-Soft. There are jigsaw puzzles and also some other brain teasers, both online and for download!
Computer Jigsaw Puzzles for PC and Mac
Jigzone - Online Jigsaw Puzzles

Mathematic jigsaw puzzles are a bit the opposit. You often find pieces that fit perfectly, but you have no clue that this is correct, you often aren't much closer to any solution until the last piece fits! There nearly always exists more than one solution, sometimes milions !
Pentominos Pentominos are a popular collection of puzzels, the pieces are all 12 different combinations you can make of 5 equal squares. Pentominos are a subcollection of the Polyominos.	Hexiamonds Hexiamonds are a peculiar collection of puzzles. suprisingly addictive!
Polyominos Polyominos (or jigsaw puzzles with poly-form pieces) are a large collection of mathematic jigsaw puzzles. With regular polyominos (like pentominos and hexiamonds) all pieces are built of an equal number of triangles, squares or hexagons. The irregular collection (like in this image) is much wider, close to infinitive. Ever played Tetris? You're in advance!	Tenyo's 'Beat The Computer' puzzles Tenyo's 'Beat the Computer Series' are a set of varied mathematic jigsaw puzzles, regular pentominos and polyominos and other. They could easily keep you busy for some weeks.