You have to pop at least 1 bubble on your turn.
Example: There are 3 bubbles left in one row and 1 bubble left in another. If it’s your turn, you can press down all 3 bubbles in the first row so the other player has to pop the last one.
If you only have time for a quick game, you can stop playing after 1 round.
You can play this game on a standard Pop It board if you don’t have the chess board. Just make sure both players have the same number of bubbles to pop.
Try playing until a player wins 3 games. You can keep score with the bubbles next to the dice tray.