Sudoku Patch
A solved sudoku cut into nine 3×3 boxes. Put every box back in its place. A new puzzle every day at four levels, each with exactly one answer you reach by logic, never by guessing.
How to play
A solved sudoku was cut into nine 3×3 boxes. Put every box back so that each row and column holds 1 to 9 once. A small digit in an empty slot must match the box you place there. Full guide →