Odd/Even Sudoku
Pink cells take odd digits, white cells even.
Also known as Parity Sudoku.
How to play Odd/Even Sudoku
- Standard 9×9 sudoku: 1–9 exactly once per row, column and 3×3 box.
- Every cell is shaded. Pink cells take an odd digit (1, 3, 5, 7, 9); white cells take an even one (2, 4, 6, 8).
Where to start
Shading alone cuts every cell to five candidates or four before you deduce anything.
Difficulty
Puzzles are generated on your device, so there is an endless supply of them. Odd/Even Sudoku comes in 2 grades — or work up the endless track, where every level is generated a little harder than the last.