Honestly fun little game
Easy to play and intuitive, I wanted a new app to start playing sudoku and this was exactly what I needed
Free
About
This logic puzzle expands on classic Sudoku with an additional color constraint. Solve daily challenges, master unique techniques, and compete with friends. It offers a fresh take on number and color pairing puzzles.
✓Number and color constraints
✓Daily global challenges
✓Streak tracking and medals
✓Rainbow and Color Wheel techniques
✓Friend comparisons and chat
✓Detailed player profiles
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What's New in Tsuidoku
1.3.5
September 30, 2026
• The Daily Challenge leaderboard is now complete, page by page, with a button that takes you straight to your place. • After a win, the Daily Challenge shows up so you never miss it. • Play the Daily Challenge without an account: your game is kept if you sign in the same day. • New iPad layout: bigger grid, controls aligned with the grid. • Polish and improvements.
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FAQ
What is Tsuidoku?
Tsuidoku is a logic puzzle game that builds upon traditional Sudoku by introducing a fourth constraint: colors. Each row, column, and 3x3 region must contain numbers 1-9 and 9 distinct colors, with each color also needing to contain all numbers 1-9.
How does Tsuidoku differ from classic Sudoku?
The key difference is the addition of a color constraint. In Tsuidoku, each number-color pair is unique, meaning a 'Red 5' cannot appear anywhere else on the grid, adding a significant layer of complexity.
Does Tsuidoku have a daily challenge?
Yes, Tsuidoku features a unique global grid every day, offering the same challenge to all players worldwide. You can maintain your streak, earn monthly medals, and check daily rankings.
What are the unique techniques in Tsuidoku?
Tsuidoku introduces techniques like the 'Rainbow Technique,' which helps track a single number across all nine colors, and the 'Color Wheel,' for tracking a single color across all nine numbers.
Can I play Tsuidoku with friends?
Yes, you can add friends, compare your game statistics, and chat directly within the app. Detailed profiles track your records across all difficulty levels.
What devices is Tsuidoku available on?
Tsuidoku is available on iPhone, iPad, and iPod. It was released on June 21, 2026, and the latest version is 1.3.5, updated on September 30, 2026.
What is the age rating for Tsuidoku?
Tsuidoku has an age rating of 12+, making it suitable for teenagers and older players.
Is Tsuidoku free to play?
Yes, Tsuidoku is completely free to download and play. It does not feature in-app purchases or advertisements.
