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日本語EnglishDeutschPolskiFrançaisNederlandsTürkçeItalianoEspañolPortuguêsUse the numbers on each row and column to work out which cells to fill. Every puzzle can be solved by logic alone, no guessing.
Each number is a run of filled cells in that row or column. Tap or drag across cells to fill them. Switch to ✕ Mark, or right-click, to mark cells that stay empty. Close anytime and continue later.
Start with the biggest numbers. An 8 in a row of 10 always covers the middle 6 cells, wherever it goes (the overlap).
Mark cells you know stay empty with ✕. Each ✕ narrows down where the runs can go.
Once an edge cell is filled, you can fill the rest of that run straight away.
Numbers fade when their row or column is complete. Look again at the rows that haven't faded.
It's free and there's no sign-up. It runs right in your browser.
No. Every puzzle is checked by a program to be solvable from the row and column numbers alone, with exactly one answer.
5×5, 10×10, 15×15 and 20×20, with 400 puzzles each. Start with 5×5 if you're new.
Tap "✕ Mark" above the grid, then tap cells. Tap it again to go back to filling.
On the same device and browser, each size continues where you left off.
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Missing one day won't break your streak. Stats are saved only in this browser.