Tsuidoku Daily Challenge #42

August 19, 2026 · one worldwide grid (UTC) · medium · digits × colors

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

Top 10 of the day

RankPlayerTimeErrors
#1Squall5:085
#2waly5:500
#3Mongkol Meesuk7:313
#4Brandon5338:301
#5Magic of Colors and Numbers9:520
#6Leaecho9:520
#7Jeca10:057
#8nine_Ali10:182
#9Omar48011:112
#10Phuong77215:451
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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