Tsuidoku Daily Challenge #70

September 16, 2026 · one worldwide grid (UTC) · medium · digits × colors

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

Top 10 of the day

RankPlayerTimeErrors
#1Yash78934:222
#2waly5:280
#3Squall7:062
#4idris khan7:060
#5Mongkol Meesuk8:110
#6madhusudhan yadav8:300
#7Lockdalf8:300
#8Minh.panda8:300
#9Kiên Nguyễn8:501
#10Tung Mysterio10:041
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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