Tsuidoku Daily Challenge #67

September 13, 2026 · one worldwide grid (UTC) · medium · digits × colors

1
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9
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1

Top 10 of the day

RankPlayerTimeErrors
#1Yash78933:400
#2waly6:592
#3Mongkol Meesuk7:511
#4Squall8:270
#5Arthur SIDE9:511
#6madhusudhan yadav11:240
#7CalciteCow12:391
#8Tulasi Prasad13:567
#9Brijesh Deodhar14:553
#10Hung Truong16:483
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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