Kakurasu
Shade cells so every row and column adds up to its target.
How to play Kakurasu
Shade cells so that every row and every column adds up to its target. Cells are worth more the further along they sit: across a row, a shaded cell scores its column number (the small 1, 2, 3… printed along the top) and down a column it scores its row number, printed down the left. The large numbers on the right are the row targets, and the ones along the bottom are the column targets. Click a cell once to shade it, again to drop an X as your own note that it stays empty, and a third time to clear it; only shaded cells count toward the sums. A target dims the moment its line is exactly right and flips to a warning chip if you overshoot. Every board is solver-checked to have a single solution, three hints are on hand if you stall, and the clock races your best time.
Kakurasu leaderboard
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Kakurasu: frequently asked questions
How do the weights in Kakurasu work?
Every shaded cell is worth its column number (the small 1 to N along the top) toward its row total, and its row number (the 1 to N down the left) toward its column total. So the same cell can add 4 to its row but only 2 to its column.
What do the numbers on the right and bottom mean?
They are the targets. Each number on the right is the exact weighted sum the shaded cells of that row must reach, and each number along the bottom is the required sum for that column. Hit every target at once to solve the board.
What is the X mark for?
The X is your own note that a cell definitely stays empty. It never counts toward any sum: it just records your deductions. Click the cell once more to clear it.
Is Kakurasu free to play?
Yes. Kakurasu runs free in your browser with no download and no sign-up, in a clean, minimalist style, with fresh solver-verified boards that always have exactly one solution.
Is Kakurasu free to play?
Yes. Kakurasu is completely free on Inkplay, with no download, no sign-up, and no in-game purchases. Open the page and play instantly on desktop or mobile.
Can I play Kakurasu unblocked?
Yes. Kakurasu runs entirely in your browser with no download, install, or plugins, so it loads instantly and keeps working even on school or work networks where bigger game sites get blocked.
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