You complete Heyawake when all numbered room counts match, black cells never share an edge, white cells connect, and no straight white run passes through three rooms. The full Heyawake position determines the outcome; visual shortcuts never replace the documented Heyawake terminal rule.
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You complete Heyawake when all numbered room counts match, black cells never share an edge, white cells connect, and no straight white run passes through three rooms. The full Heyawake position determines the outcome; visual shortcuts never replace the documented Heyawake terminal rule.
Complete guide
Heyawake uses the independently implemented Nikoli Heyawake rules v1 profile (R359). Heyawake is a complete deterministic browser game built around room-specific black counts, orthogonally nonadjacent black cells, one connected white area, and a ban on uninterrupted white lines crossing three rooms.
Heyawake begins with a grid divided by bold room boundaries, with some rooms labelled by their required number of black cells. The Heyawake deal identity and Nikoli Heyawake rules v1 are stored together. Restarting Heyawake reproduces this opening exactly.
During Heyawake, you shade or clear cells while respecting room totals, black nonadjacency, white connectivity, and the multi-room white-line restriction. The Heyawake engine rejects profile violations, unavailable material, and every action attempted after Heyawake reaches a terminal result.
You complete Heyawake when all numbered room counts match, black cells never share an edge, white cells connect, and no straight white run passes through three rooms. The full Heyawake position determines the outcome; visual shortcuts never replace the documented Heyawake terminal rule. In the Heyawake endgame, preserve the last white connector between regions and use three-room line checks to decide otherwise ambiguous cells. Check every remaining Heyawake action before committing because its terminal rule is enforced immediately.
A reliable Heyawake plan is to complete tightly constrained rooms first and mark forced white neighbours around every black cell before testing long corridor lines. A Heyawake hint is legal and deterministic. The next Heyawake hint exposes one bounded action; it never claims a forced Heyawake win. A costly Heyawake mistake is to satisfy every room count yet overlook a white row crossing three room interiors without interruption. Undo supports studying that Heyawake decision, while restart preserves the original seeded Heyawake opening.
Heyawake uses room-specific black counts, orthogonally nonadjacent black cells, one connected white area, and a ban on uninterrupted white lines crossing three rooms. That rule belongs to the Heyawake engine and storage identity rather than a cosmetic preset.
A continuous white line becomes illegal when it enters a third distinct room, even if that line contains no numbered clue.
Heyawake records its game ID, rules version, and seeded deal identity. Those Heyawake values recreate the same opening without a server request.