他和科特基还喜欢玩一种源于19世纪德国的变种象棋——克里斯皮尔棋（Kriegspiel），游戏中两名玩家背靠背坐着，
He and Kottke enjoyed playing a nineteenth-century German variant of chess called Kriegspiel , in which the players sit back-to-back ;
变种象棋