Hashi

Hashiwokakero. Bridge the islands without crossing.

About

Hashiwokakero — Bridges. Connect numbered islands with horizontal and vertical bridges so that each island has exactly its labelled number of bridge-endpoints, all islands form one connected component, and bridges never cross. Up to two bridges between any island pair. Unique-solution generation verified by backtracking solver.

How to play

Click between two islands to add a bridge; click again to add a second bridge; a third click removes both. Each island must finish with exactly the number of bridge-endpoints shown on it. Bridges may not cross. All islands must form a single connected network.

Features

• Numbered-island bridge puzzles
• Up to two bridges per island pair
• Unique-solution generation
• Generator sample ≥30% acceptance on uniqueness
• Two-color palette, deterministic rendering
• Vanilla TypeScript single-bundle build

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