Tsuidoku Daily Challenge #44

August 21, 2026 · one worldwide grid (UTC) · medium · digits × colors

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

Top 10 of the day

RankPlayerTimeErrors
#1Squall4:336
#2Yash A4:391
#3waly7:430
#4Mongkol Meesuk10:410
#5Jeca11:174
#6Georgepixel11:240
#7Long “lkoil” Kwan11:360
#8nine_Ali12:250
#9Priya76215:371
#10novasky16:030
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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