You complete Double Choco when the board is partitioned into valid regions and each region's white half matches its grey half in size and normalized shape. The engine evaluates the full position rather than relying on a visual shortcut or an unsupported solvability claim.
Your unfinished game is saved only in this browser.
You complete Double Choco when the board is partitioned into valid regions and each region's white half matches its grey half in size and normalized shape. The engine evaluates the full position rather than relying on a visual shortcut or an unsupported solvability claim.
Complete guide
Double Choco uses the independently implemented Nikoli Double Choco rules v1 profile (R457). Double Choco is a complete deterministic browser game whose distinct rules centre on regions containing equal numbers of white and grey cells whose two colour halves have the same shape after rotation or reflection.
Double Choco opens from a versioned seeded position built for regions containing equal numbers of white and grey cells whose two colour halves have the same shape after rotation or reflection. Its game ID, rules profile, and deal identity are stored together so restart recreates the same opening without a server request.
Every Double Choco action is checked against the current board, available material, and this defining restriction: matching permits rotation or reflection but never scaling, overlap, or unequal colour counts inside a completed region. Invalid, stale, or post-terminal actions leave the position unchanged.
You complete Double Choco when the board is partitioned into valid regions and each region's white half matches its grey half in size and normalized shape. The engine evaluates the full position rather than relying on a visual shortcut or an unsupported solvability claim. Near the end of Double Choco, recount the remaining obligations needed until the board is partitioned into valid regions and each region's white half matches its grey half in size and normalized shape. Check the boundary rule after every final placement or transfer because terminal status is enforced immediately.
A practical Double Choco plan is to preserve several legal continuations around regions containing equal numbers of white and grey cells whose two colour halves have the same shape after rotation or reflection. Use the deterministic hint to inspect one legal action, then compare how it affects the documented objective before committing. A common Double Choco error is to ignore the boundary rule that matching permits rotation or reflection but never scaling, overlap, or unequal colour counts inside a completed region. Undo is useful for studying that decision, while restart deliberately preserves the original seeded position.
Double Choco has its own runtime and save identity because its rules require regions containing equal numbers of white and grey cells whose two colour halves have the same shape after rotation or reflection.
matching permits rotation or reflection but never scaling, overlap, or unequal colour counts inside a completed region.
Double Choco stores its game ID, rules version, and seeded deal identity. Those values recreate the same opening locally without promising that the position is forced or winnable.