Tsuidoku Daily Challenge #106

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

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

Top 10 of the day

RankPlayerTimeErrors
#1Haniaa3:443
#2bennypezzy4:101
#3Anjy4:122
#4Jesuislena4:260
#5bloome4:332
#6Polin4:340
#7ninana4:400
#8waly4:590
#9jura5:022
#10babuh5:071
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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