Kakurasu
Game Rules: Tap to shade; touch and hold for X
Game Controls
Game Information
Shortcuts: Ctrl+S(Save) | Ctrl+O(Load)
Game Rules: Kakurasu
Play Kakurasu online for free. Shade cells so each row and column’s weighted sum matches its clue.
Also known or searched as: Index Sums / Weighted Sums
Why play this puzzle
Kakurasu focuses on choosing cells whose row and column weights add up to every outside clue, often searched as Index Sums / Weighted Sums. It works well as a quick logic exercise, but also has enough depth for longer solving sessions with fresh generated boards.
The best way to solve this Number Games puzzle is to lean on number logic: confirm forced moves first, reduce the remaining possibilities, and let the full solution emerge step by step.
Tap to shade; touch and hold for X
Frequently Asked Questions
Is Kakurasu the same as Index Sums / Weighted Sums?
Yes. Index Sums / Weighted Sums are common names or closely related names for Kakurasu, and you can play this version online for free here.
Can I play Kakurasu for free?
Kakurasu is free to play online. You can start in your browser without downloading or installing anything.
Does Kakurasu work on mobile?
Yes. Kakurasu can be played in modern desktop and mobile browsers.
Do I need an account to play Kakurasu?
No account is required. Open the puzzle page and start solving immediately.
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