RiddleSum
RiddleSum is a clean and addictive number puzzle where your goal is to balance every row and column. Pick the right numbers, remove the wrong ones, and make all sums match the clues on the edges. Simple at first glance — surprisingly deep once you start playing.
RiddleSum News & Activities
Recent activities
juzipie added RiddleSum as alternative to Daily Sudoku: Calm Logic- dmro liked RiddleSum
- dmro added RiddleSum
dmro added RiddleSum as alternative to Open Sudoku, Sudoku Ninja, LibreSudoku and Sudoku (PFA)
RiddleSum information
Developed by
Dmitriy RomanovLicensing
Proprietary and Freemium product.Pricing
One time purchase (perpetual license) that costs $3 + free version with limited functionality.Alternatives
11 alternatives listedSupported Languages
- English
- Arabic
- Chinese
- Czech
- Danish
- Dutch
- Finnish
- French
- German
- Greek
- Hebrew
- Hindi
- Indonesian
- Italian
- Japanese
- Korean
- Malay
- Polish
- Slovak
- Slovene
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- Vietnamese
What is RiddleSum?
RiddleSum is a clean and addictive number puzzle where your goal is to balance every row and column. Pick the right numbers, remove the wrong ones, and make all sums match the clues on the edges. Simple at first glance — surprisingly deep once you start playing.
Every puzzle has one single correct solution. Analyze, eliminate, and find the perfect combination that works in all directions at the same time. It’s a great way to sharpen your logic, focus, and mental math skills.
How to play:
• Check the target sums for each row and column. • Cross out numbers that can’t be part of the solution. • Keep only the numbers that complete the total. • Solve boards from 3×3 up to 9×9.
Features:
• Hundreds of handcrafted number puzzles. • Clean and minimal design that feels relaxing. • Helpful hints when you’re stuck. • No timers, no pressure — solve at your own pace. • A subtle daily workout for your brain and arithmetic.
If you love smart logic puzzles and satisfying “aha!” moments, RiddleSum is perfect for your daily brain routine. Enjoy solving beautifully simple number challenges anywhere, anytime.
