kʻar tal (քար տա)

(in board games) to deliberately leave a piece unprotected for an opponent to take

The playing pieces are called stones. One player uses the white stones and the other black stones. The players take turns placing their stones on the vacant intersections (points) on the board. Once placed, stones may not be moved, but captured stones are immediately removed from the board. A single stone (or connected group of stones) is captured when surrounded by the opponent's stones on all orthogonally adjacent points.