The goal
Mark cells to reach every row and column total. In a row, a marked cell is worth its column number: 1, 2, 3 or 4. In a column, it is worth its row number.
Numbers · 3–8 MIN
How to play ↓Kakurasu.
Every square has a weight. Make it all add up.
Getting your game ready…
How to play: Kakurasu
The controls
Tap a cell to cycle through empty, marked and crossed out. Right and bottom clues show current/target sums. A completed sum is highlighted; if you exceed it, check your marks.
A little strategy
Look for totals with few combinations: only the first position makes 1; a total of 9 in four cells needs 2 + 3 + 4. Combine row and column deductions. Every board has exactly one solution.
What does 3/7 beside a row mean?
Your marked cells currently add up to 3 and that row needs 7. Crossed-out cells contribute nothing. Every row and column must match at the same time.
Where is my progress saved?
Progress stays in this browser. An optional account lets you save an encrypted backup and restore it on another device from My account. There is no automatic sync.
A GUIDE TO KEEP GOING
Read the guide ↗Kakurasu: reading weights and combining totals
One square has two values: one for its row and another for its column. Understanding that difference is the first step towards solving the grid.