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Futoshiki

Latin squares with inequality clues between cells—more or less logic on every edge.

Fill each row and column with 1…n, and make sure every > / < sign is true.

Digits 1…n once per row and column—with every inequality true.

Easy

4×4 grid · fewer clues

Medium

5×5 grid · more inequalities

Hard

6×6 grid · tighter logic

Expert

7×7 grid · deepest play