Tsuidoku Daily Challenge #52

August 29, 2026 · one worldwide grid (UTC) · medium · digits × colors

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

Top 10 of the day

RankPlayerTimeErrors
#1Yash78933:501
#2Squall5:077
#3waly6:350
#4Mongkol Meesuk6:392
#5Magic of Colors and Numbers10:330
#6Linh9820:490
#7Phuong77225:462
#8Fajar83227:311
#9Liew Fookkong28:413
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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