- Board. 10×10. Each side has 20 men on dark squares.
- Men. Move one square diagonally forward. May capture FORWARD or BACKWARD.
- Kings (flying). Move any distance diagonally. Can capture by jumping over a single opponent piece and landing any distance beyond.
- Max-capture rule. If multiple capture sequences exist, you MUST take a sequence that captures the most pieces.
- Promotion. A man becomes a king only when its move ENDS on the last rank (not in the middle of a multi-jump).
- Win. Capture all opponent pieces or block them from any legal move.