Quindoku app for iPhone and iPad

Fill up the grid with colored tiles. Make sure each color appears exactly once in each row, each column and each "puzzle piece".

Quindoku is like Sudoku but played using colored tiles on a 5x5 grid divided into puzzle pieces. To solve it, drag the tiles onto the grid so that each row, each column and each puzzle piece contains all 5 different colors.

The Quindoku app contains thousands of different puzzles, each with a single solution that can be found using logic reasoning. No need to guess. If you do get stuck, just ask for a hint.

If you happen to place multiple tiles of the same color in a row, column or puzzle piece, the conflicting tiles will be highlighted.

When played with pen and paper, this puzzle is sometimes referred to as Jigsaw Sudoku, Squiggly Sudoku, Du-Sum-Oh, or Logi-5.