Fathom

A quiet numbers-and-arrows logic puzzle. Fill the grid so every row and column holds each number exactly once — then bend to the < > ^ v signs whispering which neighbour is greater. Start from a handful of givens and reason the rest into place, with hints when a corner won't crack.

• Logic
• Medium
• about 5 min

How to play

1. Fill the grid so every row and every column contains each number from 1 to N exactly once.
2. Obey every inequality sign between two cells — the arrow always opens toward the larger number.
3. Tap a cell to cycle it, or select it and tap the number pad; use the 💡 hint if you're stuck.

Play free in your browser — the first levels need no account.

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