Tsuidoku Daily Challenge #43

August 20, 2026 · one worldwide grid (UTC) · medium · digits × colors

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

Top 10 of the day

RankPlayerTimeErrors
#1Squall5:117
#2Yash A5:303
#3waly8:203
#4Mongkol Meesuk9:310
#5Brandon5339:331
#6moon_Priya9:471
#7Magic of Colors and Numbers11:170
#8Phúc Lê12:420
#9Omar48017:510
#10Priya76221:310
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