Door Taking (Blocking) and Closing the House Board
The basic backbone of backgammon is the checker that prevents the opponent's checkers from passing. "door" These are sequences (having two or more checkers in the same place). Especially capturing the golden numbers 5 and 7 locks the opponent's escape routes. It is created by creating 6 doors on top of each other. Prime (Barikat) It makes the movement of the opponent's checker impossible.