[Event "Izt"] [Site "Szirak (Hungary)"] [Round "15"] [White "Portisch Lajos (HUN)"] [Black "Christiansen Larry M (USA)"] [Result "1-0"] [WhiteElo "2615"] [BlackElo "2575"] [ECO "A53"] [Opening "Old Indian: Janowski"] 1.d4 Nf6 2.c4 d6 3.Nc3 Bf5 4.f3 e5 5.e4 exd4 6.Qxd4 Be6 7.f4 g6 8.Be3 Nc6 9.Qd3 Ng4 10.Bd2 Nb4 11.Qb1 Bg7 12.Nf3 c6 13.h3 Nf6 14.a3 Na6 15.Qc2 O-O 16.f5 Bd7 17.g4 Nc5 18.O-O-O Re8 19.e5 dxe5 20.Be3 e4 21.Bxc5 exf3 22.Bd3 Qc7 23.Kb1 Qf4 24.Rhg1 b5 25.cxb5 Nd5 26.Nxd5 cxd5 27.Qd2 Qb8 28.Qb4 Qb7 29.Rd2 Rac8 30.Rgd1 Qc7 31.Bd4 Bh6 32.Rc2 Qb8 33.Rxc8 Bxc8 34.Re1 Rxe1+ 35.Qxe1 Bd7 36.b6 axb6 37.Qe7 Qc8 38.Qf6 Kf8 39.g5 Qc1+ {#r} 1-0