Tsuidoku Daily Challenge #17

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

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

Top 10 of the day

RankPlayerTimeErrors
#1waly7:480
#2Mongkol Meesuk9:040
#3Magic of Colors and Numbers11:080
#4Jeca11:207
Play today’s Daily Challenge →

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

App StoreGoogle Play
← #16#18 →

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