Tsuidoku Daily Challenge #39

August 16, 2026 · one worldwide grid (UTC) · medium · digits × colors

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

Top 10 of the day

RankPlayerTimeErrors
#1Squall4:436
#2Mongkol Meesuk5:310
#3waly6:464
#4Jeca11:144
#5JEDDO16:372
#6notafish24:464
#7Nguyễn Hoàng Đặng30:494
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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