Taking turns, place your pieces on any free intersection of the board. If you line up 3 of your own pieces, you capture any piece of your opponent's.
Phase 2: movement
Once there are no more pieces left to place, you move a piece to an empty point connected to it. If you're down to just 3 pieces, you can fly to any empty point on the board, with no restriction.
How to win
You win by leaving your opponent with fewer than 3 pieces, or with no legal move left.