Tsuidoku Daily Challenge #79

September 25, 2026 · one worldwide grid (UTC) · medium · digits × colors

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

Top 10 of the day

RankPlayerTimeErrors
#1TilakSN5:000
#2Yash78935:550
#3Dzedzu7:391
#4ninana7:521
#5MoRE8:283
#6waly8:392
#7CalciteCow8:541
#8nine_Ali8:561
#9MADHUSUDHAN9:121
#10jany9:290
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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