[Event "Memorial M.Najdorf (open)"] [Site "masterchessopen.com Warsaw (Poland)"] [Date "2012.08.09"] [Round "4"] [White "Maciaga Marcin (POL)"] [Black "Zaczek Jonathon (CAN)"] [Result "0-1"] [WhiteElo "2224"] [BlackElo "2096"] [ECO "D70"] [Opening "Neo-Gruenfeld: 4.cxd5"] 1.d4 Nf6 2.c4 g6 3.g3 d5 4.cxd5 Nxd5 5.Bg2 Bg7 6.Nf3 O-O 7.O-O Nb6 8.Nc3 Nc6 9.e3 Re8 10.Re1 a5 11.Qe2 Be6 12.Rd1 Bc4 13.Qc2 Nb4 14.Qb1 e5 15.b3 exd4 16.Nxd4 Bd3 17.Qb2 c5 18.Nde2 Qf6 19.Rd2 Rad8 20.a3 Bxe2 21.axb4 Rxd2 22.Bxd2 axb4 23.Rc1 Bf3 24.Bf1 Qe7 25.Qc2 bxc3 26.Bxc3 Rc8 27.Bh3 Rc6 28.Bg2 Bxg2 29.Kxg2 c4 {#R} 0-1