Goal: Reduce your opponent to fewer than 3 pieces.
Phase 1 — Placement: Alternate placing pieces on empty junctions until all 9 per player are placed.
Phase 2 — Movement: Slide pieces one space along connected lines.
Flying Rule: With only 3 pieces left, you may move to ANY open space.
Rails™: 3 pieces in a row = Rail™. Remove one opponent piece. Re-forming a broken Rail™ counts as new.
Win: Opponent drops below 3 pieces or has no legal moves.
Ninestone II adds diagonal spoke connections for 4 extra Rail™ paths.