There is an instruction button on the right for a reason

Basically the game goes like this:

1. You and bot get dealt cards.
2. You and bot remove pairs at the same time
3. Randomly one of you gets to take one card from the opponent. Remember to discard a pair afterwards.
4. Other person gets to pick a card from the opponent.
5. Repeat step 4 until only card left is queen. Player with the queen loses.