[Event "13th ECC qual. group 6"]
[Site "Heraklio GRE"]
[Date "1997.10.11"]
[Round "2"]
[White "Zviagintsev, Vadim LAZV"]
[Black "Kosebay, Osman OYAK"]
[Result "1-0"]
[WhiteElo "2635"]
[BlackElo "2235"]
[ECO "D80"]
[EventDate "1997.??.??"]
[Annotator "Ftacnik"]
[PlyCount "41"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bg5 Ne4 5.Bf4 Nxc3 6.bxc3 Bg7 7.e3 c5 8.Nf3 
O-O 9.cxd5 cxd4 10.cxd4 Qxd5 11.Be2 Nc6 12.O-O Bf5 13.Nh4 
    ( 13.Qa4 Rfc8 
        ( 13...Rac8 14.Rfc1 a6 15.h3 Rfe8 16.Ng5 Qd7 17.Bc4 e6 18.g4 Bxg4 
        19.hxg4 b5 20.Bxe6 fxe6 21.Qd1 Na5 22.Qf3 Nc4 23.Rd1 h6 24.Ne4 {
        1/2-1/2 Guseinov, A-Sideif Sade,F/Teheran op 1991/ (32)} )
        ( 13...Qa5 14.Qb3 Qb4 15.Rfc1 Rac8 16.h3 a6 17.Qd1 Rfd8 18.g4 Be4 
        19.Nd2 e5 20.Bg5 exd4 21.Rc4 Qb2 22.Rac1 dxe3 23.Bxe3 Bd5 24.R4c2 
        Qe5 25.Qf1 Qf6 26.Bc4 Nb4 27.Rc3 Nxa2 {0-1 Van der 
        Sterren,P-Huzman,A/Wijk op 1993/} )
    14.Rfc1 Qa5 15.Qxa5 Nxa5 16.Nd2 Be6 17.a3 Bd5 18.Bb5 Nc6 19.Bc4 Bxc4 
    20.Nxc4 b5 21.Nd2 e5 22.dxe5 Nxe5 23.Bxe5 Bxe5 24.Nf3 Rxc1+ 25.Rxc1 
    Bb2 26.Rb1 Bxa3 27.Rxb5 a5 {Novikov,S-Ulko, J/Moscow op2 1995/0-1 (51)
    } )
13...Rad8?! {Giving up the bishop's pair is very dangerous, white will 
have lasting advantage. Die Aufgabe des Läuferpaares ist sehr gefährlich, 
Weiss behält einen langfristigen Vorteil.} 
    ( 13...Be6!? 14.Bf3 Qd8 
        ( 14...Qc4 15.Qd2 += )
    15.d5 Bxa1 16.dxc6 
        ( 16.Qxa1 Bxd5 17.Rd1 e5 18.Nxg6 hxg6 19.Rxd5 Qc7 =+ )
    16...Bf6 17.cxb7 Rb8 18.Qxd8 Rbxd8 19.Rd1 
        ( 19.Rb1 Bxa2 -/+ )
    19...Rxd1+ 20.Bxd1 Bxh4 21.a4 = )
14.Nxf5 Qxf5 15.Bc7 Ra8 
    ( 15...Rc8? 16.Bg4 +- )
16.Rb1 Qc8 
    ( 16...b6 17.Qa4 +/- )
    ( 16...Qd7 17.Bg3 += )
17.Bg3 e5 
    ( 17...Rd8 18.Bg4 e6 19.Qb3 += )
18.d5 Rd8 
    ( 18...Nd8 19.Qb3 +/- )
19.Bh4 f6? {Fatally weakening white squares. Endgültige Schwächung der 
weissen Felder.} 
    ( 19...Rd7 20.Qb3 Na5 21.Qb5 b6 += )
20.Bg4 Qc7 
    ( 20...f5 21.Bxd8 +- )
    ( 20...Qb8 21.Be6+ Kh8 22.Bxf6! Bxf6 23.Qf3 Bg7 24.dxc6 +- )
21.Qc2 
    ( 21.Qc2 Rxd5 22.Be6+ +- )
1-0

