[Event "URS-ch04 Final"]
[Site "Leningrad"]
[Date "1925.??.??"]
[Round "3"]
[White "Zubarev, Nikolay"]
[Black "Grigoriev, Nikolay Dmitrievich"]
[Result "0-1"]
[SetUp "1"]
[FEN "8/5K2/kp6/p1p5/P2p4/1P3P2/2P5/8 b - - 0 55"]

55... b5 56. axb5+ Kb6 57. Ke6 a4 58. bxa4 c4 59. f4 d3 60. cxd3 cxd3 61. f5 d2 62. f6 d1=Q 63. f7 Qd8 64. Kf5 Qd6 0-1