Star Battle

You complete Star Battle when every row, column, and region contains exactly the required stars and no two stars touch along an edge or corner. The full Star Battle position determines the outcome; visual shortcuts never replace the documented Star Battle terminal rule.

Loading game

Stats on this device

Your unfinished game is saved only in this browser.

Played
0
Wins
0
Win rate
Fastest win
Fewest moves
Best score
Current streak
0 days
Best streak
0 days

How to play

You complete Star Battle when every row, column, and region contains exactly the required stars and no two stars touch along an edge or corner. The full Star Battle position determines the outcome; visual shortcuts never replace the documented Star Battle terminal rule.

  • Star Battle begins with a square grid partitioned into irregular regions and a documented equal star quota applying to all three unit types. The Star Battle deal identity and Star Battle standard rules v1 are stored together. Restarting Star Battle reproduces this opening exactly.
  • During Star Battle, you place or remove stars and mark exclusions while the engine tracks row, column, region, and eight-neighbour conflicts. The Star Battle engine rejects profile violations, unavailable material, and every action attempted after Star Battle reaches a terminal result.
  • You complete Star Battle when every row, column, and region contains exactly the required stars and no two stars touch along an edge or corner. The full Star Battle position determines the outcome; visual shortcuts never replace the documented Star Battle terminal rule.

Strategy tips

  • A reliable Star Battle plan is to use completed units to exclude cells, then find narrow regions where the remaining quota can occupy only separated positions. A Star Battle hint is legal and deterministic. The next Star Battle hint exposes one bounded action; it never claims a forced Star Battle win.
  • A costly Star Battle mistake is to check only orthogonal contact; diagonal star pairs are also adjacent and invalidate the board immediately. Undo supports studying that Star Battle decision, while restart preserves the original seeded Star Battle opening.
  • In the Star Battle endgame, intersect the last row, column, and region quotas and verify that each proposed star leaves all neighbours empty. Check every remaining Star Battle action before committing because its terminal rule is enforced immediately.

Complete guide

Rules, scoring, and strategy

Star Battle uses the independently implemented Star Battle standard rules v1 profile (R363). Star Battle is a complete deterministic browser game built around a fixed star quota in every row, column, and irregular region with stars forbidden from touching even diagonally.

Setup and opening position

Star Battle begins with a square grid partitioned into irregular regions and a documented equal star quota applying to all three unit types. The Star Battle deal identity and Star Battle standard rules v1 are stored together. Restarting Star Battle reproduces this opening exactly.

Legal moves and game flow

During Star Battle, you place or remove stars and mark exclusions while the engine tracks row, column, region, and eight-neighbour conflicts. The Star Battle engine rejects profile violations, unavailable material, and every action attempted after Star Battle reaches a terminal result.

Winning and terminal positions

You complete Star Battle when every row, column, and region contains exactly the required stars and no two stars touch along an edge or corner. The full Star Battle position determines the outcome; visual shortcuts never replace the documented Star Battle terminal rule. In the Star Battle endgame, intersect the last row, column, and region quotas and verify that each proposed star leaves all neighbours empty. Check every remaining Star Battle action before committing because its terminal rule is enforced immediately.

Practical strategy

A reliable Star Battle plan is to use completed units to exclude cells, then find narrow regions where the remaining quota can occupy only separated positions. A Star Battle hint is legal and deterministic. The next Star Battle hint exposes one bounded action; it never claims a forced Star Battle win. A costly Star Battle mistake is to check only orthogonal contact; diagonal star pairs are also adjacent and invalidate the board immediately. Undo supports studying that Star Battle decision, while restart preserves the original seeded Star Battle opening.

Questions players ask

What makes Star Battle a separate game?

Star Battle uses a fixed star quota in every row, column, and irregular region with stars forbidden from touching even diagonally. That rule belongs to the Star Battle engine and storage identity rather than a cosmetic preset.

Which edge rule matters most in Star Battle?

Star quotas apply independently to rows, columns, and regions, and diagonal touching is prohibited exactly like edge touching.

How is a Star Battle position reproduced?

Star Battle records its game ID, rules version, and seeded deal identity. Those Star Battle values recreate the same opening without a server request.