You complete Kurotto when every circle remains white and the sum of adjacent black-component sizes equals its printed number. The engine evaluates the full position rather than relying on a visual shortcut or an unsupported solvability claim.
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You complete Kurotto when every circle remains white and the sum of adjacent black-component sizes equals its printed number. The engine evaluates the full position rather than relying on a visual shortcut or an unsupported solvability claim.
Complete guide
Kurotto uses the independently implemented Nikoli Kurotto rules v1 profile (R466). Kurotto is a complete deterministic browser game whose distinct rules centre on white numbered circles that total the sizes of all orthogonally connected black groups touching that circle.
Kurotto opens from a versioned seeded position built for white numbered circles that total the sizes of all orthogonally connected black groups touching that circle. Its game ID, rules profile, and deal identity are stored together so restart recreates the same opening without a server request.
Every Kurotto action is checked against the current board, available material, and this defining restriction: the same black component is counted once per circle even when it touches that circle along more than one edge. Invalid, stale, or post-terminal actions leave the position unchanged.
You complete Kurotto when every circle remains white and the sum of adjacent black-component sizes equals its printed number. The engine evaluates the full position rather than relying on a visual shortcut or an unsupported solvability claim. Near the end of Kurotto, recount the remaining obligations needed until every circle remains white and the sum of adjacent black-component sizes equals its printed number. Check the boundary rule after every final placement or transfer because terminal status is enforced immediately.
A practical Kurotto plan is to preserve several legal continuations around white numbered circles that total the sizes of all orthogonally connected black groups touching that circle. Use the deterministic hint to inspect one legal action, then compare how it affects the documented objective before committing. A common Kurotto error is to ignore the boundary rule that the same black component is counted once per circle even when it touches that circle along more than one edge. Undo is useful for studying that decision, while restart deliberately preserves the original seeded position.
Kurotto has its own runtime and save identity because its rules require white numbered circles that total the sizes of all orthogonally connected black groups touching that circle.
the same black component is counted once per circle even when it touches that circle along more than one edge.
Kurotto 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.