Polydoku - Sudoku Jigsaw

In Polydoku, you are given a set of jigsaw-like (polyomino) pieces, each carrying several numbers - which you must fit into a square board. Not only must they fit, but no row or column can have the same number twice.

There are six different styles of puzzle, with different-sized boards and pieces, covering a range of difficulties. Infinitely many puzzles can be generated in each style.