You complete Sto Stone when all room shade counts and connectivity rules hold and the completed stones can fall to a stable non-overlapping arrangement. 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 Sto Stone when all room shade counts and connectivity rules hold and the completed stones can fall to a stable non-overlapping arrangement. The engine evaluates the full position rather than relying on a visual shortcut or an unsupported solvability claim.
Complete guide
Sto Stone uses the independently implemented Nikoli Sto-stone rules v1 profile (R468). Sto Stone is a complete deterministic browser game whose distinct rules centre on one connected shaded stone in each room that falls under simulated gravity without stones overlapping after the drop.
Sto Stone opens from a versioned seeded position built for one connected shaded stone in each room that falls under simulated gravity without stones overlapping after the drop. Its game ID, rules profile, and deal identity are stored together so restart recreates the same opening without a server request.
Every Sto Stone action is checked against the current board, available material, and this defining restriction: gravity is evaluated on each whole connected stone rather than on individual shaded cells that could separate during a fall. Invalid, stale, or post-terminal actions leave the position unchanged.
You complete Sto Stone when all room shade counts and connectivity rules hold and the completed stones can fall to a stable non-overlapping arrangement. The engine evaluates the full position rather than relying on a visual shortcut or an unsupported solvability claim. Near the end of Sto Stone, recount the remaining obligations needed until all room shade counts and connectivity rules hold and the completed stones can fall to a stable non-overlapping arrangement. Check the boundary rule after every final placement or transfer because terminal status is enforced immediately.
A practical Sto Stone plan is to preserve several legal continuations around one connected shaded stone in each room that falls under simulated gravity without stones overlapping after the drop. Use the deterministic hint to inspect one legal action, then compare how it affects the documented objective before committing. A common Sto Stone error is to ignore the boundary rule that gravity is evaluated on each whole connected stone rather than on individual shaded cells that could separate during a fall. Undo is useful for studying that decision, while restart deliberately preserves the original seeded position.
Sto Stone has its own runtime and save identity because its rules require one connected shaded stone in each room that falls under simulated gravity without stones overlapping after the drop.
gravity is evaluated on each whole connected stone rather than on individual shaded cells that could separate during a fall.
Sto Stone 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.