Tsuidoku Daily Challenge #80

September 26, 2026 · one worldwide grid (UTC) · medium · digits × colors

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

Today’s top 10 (so far)

RankPlayerTimeErrors
#1Yash78934:240
#2ninana5:291
#3waly7:172
#4MADHUSUDHAN7:301
#5Brijesh8:073
#6Lockdalf8:560
#7jany9:191
#8CrniMile10:140
#9Batuocleon10:370
#10TungMysterio10:431
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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