Tsuidoku Daily Challenge #45

August 22, 2026 · one worldwide grid (UTC) · medium · digits × colors

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

Top 10 of the day

RankPlayerTimeErrors
#1Squall4:024
#2Yash A4:362
#3waly6:343
#4moon_Priya8:300
#5novasky8:300
#6Tristan9:315
#7Jeca9:457
#8Jan Roy Estabillo17:000
#9Phuong77217:540
#10nine_Ali22:023
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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