[Event "Ch World (juniors) (under 20)"] [Site "masterchessopen.com Buenos Aires (Argentina)"] [Round "0"] [White "Stefansson Hannes (ISL)"] [Black "Tsemekhman Vadim (USA)"] [Result "1-0"] [WhiteElo "2500"] [BlackElo "2355"] [ECO "A10"] [Opening "English: 1...g6 2.Nc3 Bg7"] 1.c4 g6 2.Nc3 Bg7 3.d4 Nf6 4.e4 d6 5.f3 O-O 6.Be3 c6 7.Bd3 e5 8.d5 cxd5 9.cxd5 Nh5 10.Nge2 f5 11.O-O Nd7 12.exf5 gxf5 13.Rc1 Nc5 14.Bb1 a6 15.Kh1 Kh8 16.f4 Qh4 17.Bf2 Qg4 18.fxe5 Bxe5 19.Nd4 a5 20.Nf3 Rg8 21.Rg1 Bf6 22.Nb5 Ne4 23.Bxe4 fxe4 24.Nxd6 Qf4 25.Nf7+ Kg7 26.N3e5 e3 27.Be1 Qf5 28.Rc7 Rf8 29.Nd6+ {#r} 1-0