Tsuidoku Daily Challenge #30

August 7, 2026 · one worldwide grid (UTC) · medium · digits × colors

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

Top 10 of the day

RankPlayerTimeErrors
#1Mongkol Meesuk6:520
#2Squall7:033
#3waly8:020
#4Magic of Colors and Numbers10:320
#5Jeca11:235
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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