Beginner
5 × 5
2–5 minutes
Free 5x5 Hitori puzzles online — the daily-puzzle size. Learn the sandwich, triple, and pair techniques on a board you can finish in a coffee break.
PlayIntermediate
7 × 7
5–10 minutes
Free 7x7 Hitori puzzles online. A step up from the daily 5x5 — more duplicates per line and your first real connectivity arguments.
PlayAdvanced
9 × 9
10–20 minutes
Free 9x9 Hitori puzzles online — the classic Nikoli print size. Longer deduction chains, corner patterns, and real connectivity play.
PlayExpert
12 × 12
20–35 minutes
Free 12x12 Hitori puzzles online. Long-form solves for experienced players — deep cascades, interleaved wall arguments, and no wasted shades.
PlayExpert
15 × 15
30–60 minutes
Free 15x15 Hitori puzzles online — our biggest boards. Marathon solves with values 1–15, for players who want the full endurance version.
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Puzzles
Hitori Puzzles by Size
Free Hitori puzzles by grid size — 600 verified boards from quick 5×5 dailies to expert 15×15 grids, graded easy to hard by technique.