Setup

• Drag ships from the roster onto your grid, or hit Auto-place.
• Right-click a ship or press R to rotate it. Long-press on touch.
• Ships cannot overlap and must stay inside the 10×10 grid.

Battle

• Tap a cell in Enemy Waters to fire.
• White splash = miss. Fire + smoke = hit. Glowing wreck = ship sunk.
• You and the AI alternate shots. First to sink all 5 ships wins.

AI difficulty

• Easy: random shots, no memory.
• Medium: random until a hit, then hunts neighbors in a line.
• Hard: parity search + hunt/target with ship-length awareness.
• Unbeatable: full probability density — recomputes every shot.

Score

• Submitted score = winStreak × 100 + accuracy %.
• Press P to pause, Esc to resume.