Tsuidoku Daily Challenge #91

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

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

Top 10 of the day

RankPlayerTimeErrors
#1pocok3:241
#2TilakSN3:480
#367673:541
#4teo4:152
#5zfjzjt4:350
#6popcorn9blabla4:392
#7Jesuislena4:470
#8waly4:550
#9bloome5:081
#10aaaah5:193
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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