Tsuidoku Daily Challenge #22

July 30, 2026 · one worldwide grid (UTC) · medium · digits × colors

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

Top 10 of the day

RankPlayerTimeErrors
#1Mongkol Meesuk8:050
#2waly8:330
#3AfonsoPerks13:020
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← #21#23 →

Tsuidoku 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