How to play
Finish Firefly when every cell, edge, region, and fixed clue satisfies the directed turn count connections completion test. Completion is checked from the entire position, not from a displayed answer or a visual approximation.
- Read the opening of Firefly by locating every lane, clue, reserve, room, or fixed element named in its rule. Connect fireflies into one nonbranching network so every arrow follows its facing direction and its number fixes the turns before reaching its mate. The seeded deal and rules version reproduce that public starting information without exposing a hidden completion.
- Check each proposed action against the current position and this boundary: Connect fireflies into one nonbranching network so every arrow follows its facing direction and its number fixes the turns before reaching its mate. Illegal, stale, and post-finish actions are rejected without changing the board.
- Finish Firefly when every cell, edge, region, and fixed clue satisfies the directed turn count connections completion test. Completion is checked from the entire position, not from a displayed answer or a visual approximation.
Strategy tips
- Trace each arrow forward and count candidate turns before drawing an edge, rejecting routes that reach another firefly with the wrong facing or turn total.
- Counting cells instead of turns, or following an arrow backward, can produce a neat nonbranching path that contradicts the firefly clue.
- During the final few decisions, compare every unresolved obligation with the target: every cell, edge, region, and fixed clue satisfies the directed turn count connections completion test. Keep the option described in the strategy note available until the last forced dependency is settled.