[Event "Ch City"] [Site "masterchessopen.com Donetsk (Ukraine)"] [Round "0"] [White "Berezin Oleg (UKR)"] [Black "Mamedov R (UKR)"] [Result "1-0"] [WhiteElo "2453"] [ECO "E38"] [Opening "Nimzo-Indian: Classical, 4...c5"] 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5 5.dxc5 O-O 6.Bf4 Qa5 7.e3 Nc6 8.Ne2 Bxc5 9.Nc1 e5 10.Nb3 Qb6 11.Bg5 Be7 12.Bxf6 gxf6 13.a3 Kh8 14.Nd5 Qd8 15.Bd3 h6 16.Qe2 d6 17.Qh5 Kg7 18.O-O Qd7 19.h3 f5 20.Rad1 b6 21.Bb1 Rb8 22.f4 e4 23.g4 Rh8 24.Nd4 Nxd4 25.Rxd4 fxg4 26.f5 Bf6 27.Qxg4+ {#r} 1-0