Number Waffle

Swap numbers across a cut-out grid until every digit is in place, every full line contains 1–N, and each sum clue is satisfied.

4 sizes · 7×7–15×15Guaranteed optimum by size4 independent difficulties

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Cómo se juega

Choose a 7×7, 9×9, 11×11 or 15×15 board. Every complete row and column must contain each number from 1 to the board size exactly once; 7×7 is the classic format.
Swap two tiles by dragging one onto the other or selecting them with two taps. A tile changes state when it reaches its correct position.
Each clue shows the sum of the two tiles its arrows point to. Combine those sums with already-correct numbers to deduce the rest.
Every size has a guaranteed optimal swap distance plus five extra star-eligible swaps. Each extra swap used removes one star.
Reaching zero star-eligible swaps does not end the game: you may keep solving, but no stars remain.

Start with rows and columns that already contain several correct tiles: fewer gaps mean fewer possibilities.
Extreme sums usually reveal more. A very small or large clue has fewer possible pairs than a middle sum.
Before swapping, look for two cells that need each other's values: one good swap can fix both.
Correct tiles are protected from accidental moves; use them as anchors for row and column deductions.

Las partidas se guardan automáticamente mientras juegas.