[Event "6th Paul Keres Open A"]
[Site "Parnu EST"]
[Date "2025.08.14"]
[Round "6.7"]
[White "Lahdelma, Henri"]
[Black "Kostov, Deyan Samuil"]
[Result "1/2-1/2"]
[WhiteTitle "FM"]
[BlackTitle "FM"]
[WhiteElo "2247"]
[BlackElo "2368"]
[ECO "A50"]
[Opening "Mexican Defense"]
[PlyCount "100"]

1.d4 Nf6 2.c4 Nc6 3.Nf3 e6 4.a3 d5 5.cxd5 exd5 6.Bg5 h6 7.Bh4 Be7 8.Nc3 Ne4 9.Bxe7 Nxe7 10.e3 Nd6 11.h3 c6 12.Bd3 Bf5 13.Ne5 O-O 14.O-O Bxd3 15.Qxd3 Nef5 16.b4 a6 17.a4 Qg5 18.Nf3 Qg6 19.Ne5 Qg5 20.Nf3 Qg6 21.b5 axb5 22.axb5 Nc4 23.Qb1 Kh7 24.Rxa8 Rxa8 25.bxc6 bxc6 26.Ne2 Nfd6 27.Nf4 Qxb1 28.Rxb1 Ra3 29.h4 g6 30.g4 Kg7 31.g5 hxg5 32.hxg5 Ne4 33.Rb7 Ra1+ 34.Kg2 Ra2 35.Ne5 Nxg5 36.Nxc4 dxc4 37.Rc7 Ne4 38.Kf3 Nd2+ 39.Kg2 Ne4 40.Kf3 Nxf2 41.Rxc6 Rc2 42.e4 Nd3 43.Nd5 Ne1+ 44.Ke3 Ng2+ 45.Kf3 Ne1+ 46.Ke3 g5 47.Nb6 Ng2+ 48.Kf3 Ne1+ 49.Ke3 Ng2+ 50.Kf3 Ne1+ 1/2-1/2