[Event "15th ECC qual. group 3"]
[Site "Albufeira Algarve POR"]
[Date "1999.10.02"]
[Round "2"]
[White "Damaso, Rui BOAP"]
[Black "Avrukh, Boris BESH"]
[Result "0-1"]
[WhiteElo "2399"]
[BlackElo "2588"]
[ECO "D91"]
[EventDate "1999.??.??"]
[Annotator "Avrukh,B"]
[PlyCount "70"]

1.d4 Nf6 2.Nf3 g6 3.c4 Bg7 4.Nc3 d5 5.Bg5 Ne4 6.cxd5 Nxg5 7.Nxg5 e6 8.Qd2 
h6 9.Nh3 exd5 10.Qe3+ Kf8 11.Nf4 c5 {Black immediatly using the moment to 
open his bishop,which has no opponent;} 12.dxc5 d4 13.Qd2 Na6 
    ( 13...Nc6!? 14.Ne4 Be5 15.g3 Bc7 16.O-O-O 
        ( 16.Nd3 $142 Bf5 17.Bg2 Qd5 ~= )
    16...g5! 17.Nd3 Qd5 18.Bg2 
        ( 18.f3 Qxa2 -/+ )
    18...Qxa2 
        ( 18...f5 19.Nxg5! Qxg2 20.Nf3 Qh3 $8 21.Nf4 Bxf4 22.Qxf4 ~= )
    19.Qc2 Bf5 $36 {0-1 Ocampo, R-Najdorf,M/Buenos Aires 1968/MCD (41)} )
    ( 13...Nd7 14.Ne4 Qe7 15.Qc2 b6 16.c6 Ne5 17.Nd5 Qd8 18.Nb4 Bf5 19.c7 
    Qh4 20.Rc1 Rc8 21.Nd6 Bxc2 22.Nxc8 d3 23.Nxc2 dxc2 24.Rxc2 Qb4+ 25.Kd1
    Nc4 26.e3 Nxb2+ {0-1 Halasz,T-Dvoirys,S/ Dortmund 1991/TD (26)} )
14.e3 Bf5 
    ( 14...Nxc5 15.Nb5 
        ( 15.O-O-O Bf5 16.exd4 Ne4 17.Nxe4 Bxe4 18.Bd3 
            ( 18.Ne2!? )
        18...Qxd4 19.Rhe1 Bxd3 20.Nxd3 Qd5 21.Nb4 Qc5+ 22.Kb1 Kg8 23.Nd5 
        Kh7 = {0-1 Volkov,S-Dvoirys,S/Omsk 1996/CBM 57 (79)} )
    15...Qe7 16.Nxd4 Ne4 17.Nd5 $8 Nxd2 18.Nxe7 Nxf1 19.Nxc8 Nxe3 20.fxe3 
    Rxc8 {and black is slightly better in this endgame.1/2-1/2 Bagirov, 
    V-Dvoirys,S/Moscow 1991/URS-ch (42)} )
15.exd4 
    ( 15.O-O-O dxc3 
        ( 15...Nxc5 16.exd4 Ne4 {leads to Volkov-Dvoirys game} )
    16.Qxd8+ Rxd8 17.Rxd8+ Ke7 18.Rd4 $8 cxb2+ 19.Kxb2 Nxc5 =+ )
15...Qxd4 
    ( 15...Nb4? 16.O-O-O Bc2 17.Bc4 Bxd1 18.Rxd1 +/- )
16.Bxa6 bxa6 17.O-O-O 
    ( 17.Qxd4 Bxd4 18.O-O 
        ( 18.c6 $143 Re8+ 19.Kf1 Rc8 -/+ )
    18...Rb8 
        ( 18...Bxc5 )
    19.Rad1 Bxc5 20.Rd2 Kg7 =+ )
17...Qxc5 18.Qd5 
    ( 18.Rhe1 Kg8 19.Nd5 Be6 20.Kb1 $140 Rb8 21.Qf4 Rxb2+ 22.Kxb2 Bxd5 $40
    )
18...Qxd5 
    ( 18...Qc8 19.Qd6+ Kg8 20.Nd5 Qb7 
        ( 20...Kh7 21.Nf6+ Bxf6 22.Qxf6 Qe6 = )
    21.Rhe1 
        ( 21.Ne7+ $140 Kh7 22.Nxf5 Rab8! -+ )
    21...Rb8 22.Rd2 Be6 $140 23.Rxe6 fxe6 24.Qxe6+ Kh7 25.Nf6+ Bxf6 26.
    Rd7+ Bg7 27.Rxb7 Rxb7 28.Qxa6 = )
19.Nfxd5 Rc8 20.Rhe1 h5 21.f4? 
    ( 21.h4 {was neseccary in order not to allow to black to develop his 
    rook from h-file.} 21...Be6 22.Kb1 Rc4 
        ( 22...Rc5 )
        ( 22...Kg8? 23.Ne7+ +- )
    23.Ne4 Bf5 24.f3 = )
21...Be6? 
    ( 21...h4! {and} 22.Ne7? {is not working in view of} 22...Bxc3 -/+ )
22.Re4? 
    ( {Once again white misses his chance,clearly better was} 22.h4! Bxd5 
    $140 23.Rxd5 Bxc3 24.bxc3 Rxc3+ 25.Kb2 Rg3 26.Rg5! = )
22...h4! {Now it's almost impossible to hold white position.Two bishops 
with two rooks is incredibly strong combination in such open positions.} 
23.Kd2?! 
    ( 23.Re3 $142 Rh5 24.Kb1 Rc4 -/+ )
23...Rh5 24.Ke3 Rc5! -+ {now black wins material} 25.Nb4 Bxc3 26.bxc3 
Rxc3+ 27.Rd3 Rhc5 28.Rxc3 
    ( 28.Nxa6 Rxd3+ 29.Kxd3 Ra5 -+ )
28...Rxc3+ 29.Kd4 Rc1 30.a3 
    ( 30.Nxa6 Rc2 {hopeless for white.} )
30...a5 31.Nd3 Rc2 32.Ne1 Ra2 33.Re3 a4 34.Nf3 Rxg2 35.Nxh4 Rg4! 
    ( 35...Rxh2? 36.Nxg6+ )
0-1

