CHESS

Yuri Averbakh v Alexander Tolush, training tournament 1953. The Soviet Union had arranged a match with the United States, so the country’s finest grandmasters gathered for a two-week course of intensive training and practice games played to a high standard. All in vain, the match was postponed for a year due to a squabble with the State Department over visa conditions. Here Averbakh (White, to move) has sacrificed a knight for two pawns but has a fine attack on the exposed black king. How did he win?