Fica por aí (Stick around) Obrigar o adversário a passar 10 vezes seguidas num mesmo jogo de Gamão ou variantes. (Force the opponent to pass the move 10 times in a row without using the autopass in a single game of backgammon or its variants.)
lukulus: As I understand it, nobody would force you to keep playing if you don't want to. The possibility of a resignation would actually make the achievement even more difficult to accomplish.