Color Sudoku Duels

Play Sudoku with colors, classic numbers, or another player online. Color Sudoku replaces 1 through 9 with nine colors. The rules stay the same: each row, column, and 3×3 box needs every color once. Prefer numbers? Switch to classic mode and choose Easy, Medium, or Hard. Solo puzzles work offline and save automatically. In an Online Duel, both players get the same Color Sudoku puzzle. You can see how many placements your opponent has left, but not their moves. The duel ends when one player finishes correctly. Every puzzle is generated on your device and checked for one solution. Use notes, hints, undo, erase, pause, and optional mistake checking. Online Duels and Game Center leaderboards require Game Center and an internet connection.