Suirodoku Daily Challenge #4

July 12, 2026 · one worldwide grid (UTC) · medium · digits × colors

2
5
1
7
8
8
3
2
4
9
8
5
6
2
6
7
1
2
9
9
4
5
5
7
4
6
2
6
8
5
3
9
3
4
5
2

Top 10 of the day

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#1Player11:370
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Suirodoku is a free online color sudoku: every row, column and region holds the digits 1-9 AND all 9 colors, and each digit-color pair appears exactly once. The math behind it · Daily hub