Tsuidoku Daily Challenge #15

July 23, 2026 · one worldwide grid (UTC) · medium · digits × colors

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

Top 10 of the day

RankPlayerTimeErrors
#1waly7:570
#2Mongkol Meesuk9:211
#3Magic of Colors and Numbers11:100
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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