Sashigane

You complete Sashigane when the grid is covered by non-overlapping L regions and every circle or arrow occupies its required structural position. The engine evaluates the full position rather than relying on a visual shortcut or an unsupported solvability claim.

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How to play

You complete Sashigane when the grid is covered by non-overlapping L regions and every circle or arrow occupies its required structural position. The engine evaluates the full position rather than relying on a visual shortcut or an unsupported solvability claim.

  • Sashigane opens from a versioned seeded position built for a partition into L-shaped regions whose bend and arm information is fixed by circles and directional arrow clues. Its game ID, rules profile, and deal identity are stored together so restart recreates the same opening without a server request.
  • Every Sashigane action is checked against the current board, available material, and this defining restriction: each region has one right-angle bend and two straight arms; rectangles, branched regions, and multiple bends are invalid. Invalid, stale, or post-terminal actions leave the position unchanged.
  • You complete Sashigane when the grid is covered by non-overlapping L regions and every circle or arrow occupies its required structural position. The engine evaluates the full position rather than relying on a visual shortcut or an unsupported solvability claim.

Strategy tips

  • A practical Sashigane plan is to preserve several legal continuations around a partition into L-shaped regions whose bend and arm information is fixed by circles and directional arrow clues. Use the deterministic hint to inspect one legal action, then compare how it affects the documented objective before committing.
  • A common Sashigane error is to ignore the boundary rule that each region has one right-angle bend and two straight arms; rectangles, branched regions, and multiple bends are invalid. Undo is useful for studying that decision, while restart deliberately preserves the original seeded position.
  • Near the end of Sashigane, recount the remaining obligations needed until the grid is covered by non-overlapping L regions and every circle or arrow occupies its required structural position. Check the boundary rule after every final placement or transfer because terminal status is enforced immediately.

Complete guide

Rules, scoring, and strategy

Sashigane uses the independently implemented Nikoli Sashigane rules v1 profile (R460). Sashigane is a complete deterministic browser game whose distinct rules centre on a partition into L-shaped regions whose bend and arm information is fixed by circles and directional arrow clues.

Setup and opening position

Sashigane opens from a versioned seeded position built for a partition into L-shaped regions whose bend and arm information is fixed by circles and directional arrow clues. Its game ID, rules profile, and deal identity are stored together so restart recreates the same opening without a server request.

Legal moves and game flow

Every Sashigane action is checked against the current board, available material, and this defining restriction: each region has one right-angle bend and two straight arms; rectangles, branched regions, and multiple bends are invalid. Invalid, stale, or post-terminal actions leave the position unchanged.

Winning and terminal positions

You complete Sashigane when the grid is covered by non-overlapping L regions and every circle or arrow occupies its required structural position. The engine evaluates the full position rather than relying on a visual shortcut or an unsupported solvability claim. Near the end of Sashigane, recount the remaining obligations needed until the grid is covered by non-overlapping L regions and every circle or arrow occupies its required structural position. Check the boundary rule after every final placement or transfer because terminal status is enforced immediately.

Practical strategy

A practical Sashigane plan is to preserve several legal continuations around a partition into L-shaped regions whose bend and arm information is fixed by circles and directional arrow clues. Use the deterministic hint to inspect one legal action, then compare how it affects the documented objective before committing. A common Sashigane error is to ignore the boundary rule that each region has one right-angle bend and two straight arms; rectangles, branched regions, and multiple bends are invalid. Undo is useful for studying that decision, while restart deliberately preserves the original seeded position.

Questions players ask

What makes Sashigane a separate game?

Sashigane has its own runtime and save identity because its rules require a partition into L-shaped regions whose bend and arm information is fixed by circles and directional arrow clues.

Which Sashigane edge rule matters most?

each region has one right-angle bend and two straight arms; rectangles, branched regions, and multiple bends are invalid.

Can a Sashigane position be reproduced?

Sashigane 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.