Tsuidoku Daily Challenge #64

September 10, 2026 · one worldwide grid (UTC) · medium · digits × colors

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

Top 10 of the day

RankPlayerTimeErrors
#1Yash78934:140
#2Squall8:111
#3waly9:161
#4Liew Fookkong10:052
#5Priya76215:311
#6Tan Lam Minh17:030
#7Omar48018:170
#8hyoyo.abcd20:213
#9william cheah25:534
#10nine_Ali35:322
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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