Tsuidoku Daily Challenge #29

August 6, 2026 · one worldwide grid (UTC) · medium · digits × colors

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

Top 10 of the day

RankPlayerTimeErrors
#1waly6:030
#2Mongkol Meesuk7:030
#3Magic of Colors and Numbers8:020
#4Jeca10:425
Play today’s Daily Challenge →

Get the free app — your grid, colors & streak, synced.

App StoreGoogle Play

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