Tsuidoku Daily Challenge #66

September 12, 2026 · one worldwide grid (UTC) · medium · digits × colors

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

Top 10 of the day

RankPlayerTimeErrors
#1Yash78934:040
#2Mongkol Meesuk6:383
#3waly7:182
#4Squall8:172
#5Cyber Knight8:381
#6Long “lkoil” Kwan10:420
#7Magic of Colors and Numbers12:050
#8Liew Fookkong12:201
#9madhusudhan yadav12:483
#10MisteRibi13:400
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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