Tsuidoku Daily Challenge #18

July 26, 2026 · one worldwide grid (UTC) · medium · digits × colors

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

Top 10 of the day

RankPlayerTimeErrors
#1waly9:420
#2Magic of Colors and Numbers10:570
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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