About
This logic puzzle game introduces a new rule to classic Sudoku: main diagonals must also contain numbers 1-9 without repetition. It offers daily challenges, four difficulty levels, and smart features to enhance gameplay. An optional premium upgrade provides unlimited hints, ad-free play, and exclusive content.
What's New in Diagonal Sudoku
1.04
February 26, 2026
Save your game progress and resume anytime — never lose your place again.
Subscription plans
Premium (3 Months)
Unlock all premium features with a 3-month subscription
Developer apps
FAQ
What is Diagonal Sudoku?
Diagonal Sudoku is a logic puzzle game that builds upon classic Sudoku by adding a rule: both main diagonals must also contain the numbers 1 through 9 without repetition. This creates a more strategic and challenging experience.
Does Diagonal Sudoku have ads?
Yes, Diagonal Sudoku contains advertisements. Users can remove ads by upgrading to the premium version, which also offers unlimited hints and exclusive weekly challenges.
What are the difficulty levels in Diagonal Sudoku?
Diagonal Sudoku offers four difficulty levels: Easy (40 starting numbers), Medium (balanced challenge), Hard (fewer hints), and Expert (22 starting numbers) for ultimate brain training.
Can I play Diagonal Sudoku offline?
The provided information does not specify if Diagonal Sudoku can be played offline. However, features like daily challenges and streaks often require an internet connection.
How does the ranking system work in Diagonal Sudoku?
Diagonal Sudoku features a ranking system with 7 ranks, from Novice to Grandmaster. Players earn points for completed puzzles based on difficulty, speed, and accuracy, which contribute to their rank progression.
What are the premium features in Diagonal Sudoku?
The premium version of Diagonal Sudoku offers unlimited hints, no ads, exclusive weekly challenges with bonus points, access to the past 30 daily puzzles, and detailed performance statistics.
How often is Diagonal Sudoku updated?
Diagonal Sudoku was last updated on February 26, 2026, indicating regular updates. The current version is 1.04.
What devices is Diagonal Sudoku available on?
Diagonal Sudoku is available on iPhones and iPads, as indicated by its supported devices list.
