Tsuidoku Daily Challenge #75

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

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

Top 10 of the day

RankPlayerTimeErrors
#1Natalie Stallings3:506
#2Yash78934:100
#3TilakSN4:330
#4Squall6:213
#5Lockdalf6:221
#6二分の七次元6:471
#7Mongkol Meesuk6:571
#8waly7:042
#9MisteRibi8:070
#10madhusudhan yadav8:101
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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