C1C2C3C4C5C6C7C8C9
R1
R2
R3
R4
R5
R6
R7
R8
R9
7
5
8
3
9
7
8
2
9
5
9
3
7
1
1
2
5
3
9
3
1
4
5
2
3
6
7
2
8
3
6
4

How to play:

Complete the board by placing the digits 1-9 in every cell in such a way that every row, column and box holds each digit only once.

Show candidates

To remove/toggle a candidate, press c and 1-9.

New Game: