(150) Tyre (1875) - Heron,D (1835) [D32]
Marymass (5), 26.08.2001
[Fritz 6 (30s)]
D32: Tarrasch Defence: Sidelines and lines without g3
This game decided the Major section of the Marymass Congess1.d4 e6 2.Nf3 d5 3.e3 c5 4.c4 Nc6 5.cxd5 exd5 6.Nc3 Nf6 7.Be2 a6 8.0-0 Bd6 9.dxc5 Bxc5 10.Kh1N
[10.Nd4 0-0 11.Nxc6 bxc6 12.b3 Qd6 13.Bb2 Ba7 14.Re1 Bb8 15.g3 Bh3 16.Rc1 Bc7 17.Bf3 Rfe8 18.Ne2 Ne4 19.Nf4 Bf5 20.Bg2 Rad8 21.Qh5 Bg6 22.Nxg6 hxg6 23.Qe2 c5 24.Ba3 d4 Sajtar,J-Kozma,J/Prague 1954/MCD/½-½ (40); 10.a3 Ba7 11.b4 d4 12.Nxd4 Nxd4 13.exd4 Bxd4 14.Bb2 0-0 15.Bf3 Rb8 16.Qd2 Be5 17.Qxd8 Rxd8 18.Rfd1 Rxd1+ 19.Nxd1 Bxb2 20.Nxb2 h5 21.h3 g5 22.Rc1 g4 23.hxg4 hxg4 24.Be2 Be6 25.Na4 Re8 26.Nc5 Bd5 27.Bc4 Bc6 28.Rd1 Kg7 29.Kh2 Rh8+ 30.Kg1 Re8 31.Kh2 Rh8+ 32.Kg1 ½-½ Berg,K-Sher,M/Aarhus 1993/EXT 97 (32); 10.Qd3 0-0 11.Rd1 Be6 12.a3 Ba7 13.b4 b5 14.Bb2 Re8 15.Bf1 Qd6 16.Rac1 Rad8 17.Ne2 Bg4 18.Bxf6 Qxf6 19.Qc3 Ne5 20.Nxe5 Rxe5 21.Rd2 Bxe2 22.Bxe2 Rde8 23.Bf1 h5 24.Rd3 h4 25.Rcd1 h3 26.g3 Qf3 27.Bxh3 Rxe3 28.fxe3 Rxe3 0-1 Eperjesi,L-Palkovi,J/Budapest 1995/EXT 97 (28); 10.Qc2 Bd6
(10...Qd6 11.Rd1 0-0 12.b3 g6 13.Bb2 Bf5 14.Qd2 Rad8 15.a3 Rfe8 16.b4 Bb6 17.Bc4 d4 18.exd4 Nxd4 19.Nd5 Nxf3+ 20.gxf3 Nxd5 21.Bxd5 Qxd5 22.Qxd5 Rxd5 23.Rxd5 Re2 24.Bf6 Be6 25.Rd6 Bc7 26.Rad1 Re1+ 27.Rxe1 Bxd6 28.Rd1 Bc7 1-0 Udovcic,M-Letelier,R/Havana 1964/MCD (28)
) 11.a3 0-0 12.Rd1 Ne7 13.b4 Bf5 14.Qd2 b5 15.Bb2 Rc8 16.Rac1 Bb8 17.Nd4 Qd6 18.g3 Bg6 19.Nb3 h5 20.Bf3 Rcd8 21.Nc5 Qb6 22.Ne2 Nc6 23.Bxf6 gxf6 24.Bg2 Rfe8 Jensen,E-Baldandorsh/Leipzig 1960/EXT 99/1-0 (54)]
10...Be6 11.a3 Secures b4
11...0-0 12.b4 weakens c4 but gains time
12...Bb6 13.Na4 Ba7 14.Bb2 Qd7 [14...Ne4 15.Rc1= this may be very slightly in Black's favour because the white queen-side has been weakened]
15.Rc1 [15.Bxf6!? gxf6 16.Rc1±]
15...Ne4= 16.Ne5 Nxe5 17.Bxe5 Rac8 18.Rxc8 Rxc8 19.Bd4 Bxd4 20.exd4 Nc3 all the weaknesses are with white
21.Nxc3 Rxc3 22.a4 Qc7 23.b5 This push gains space but weakens the white queen-side pawns even more
23...a5 24.f4 Bf5 25.Qd2 Rc2 26.Qe3 [26.Qe1!? Kf8 27.Bf3 Rc4³]
26...Be4³ 'the bishop is the bishop!' Isn't it pleasing when a dormant 'bad' bishop springs to life and becomes strong?
27.f5 Rc3 28.Qg5 [¹28.Qf2!?³ should be considered]
28...Rh3µ Do you see the mate threat?
29.Rf4 f6 The mate threat is Qc1
[29...Qc1+ also wins 30.Bf1 f6
(30...h6 31.Qg4 h5 32.Qxh3 Qxf4 33.Kg1 Qd2 34.Qxh5 Qxd4+ 35.Kh1 Qa1 36.Qe2 Qxa4) 31.Qg4 Ra3]
30.Qg4 Ra3 31.h4? [31.Rf1 Rxa4 32.Rd1 Qd7-+]
31...Ra2 [¹31...Rxa4 32.Rf1 Rxd4-+]
32.Qh5?? simply worsens the situation
[32.b6 Qc3 33.Bf3 Qxd4-+]
32...Qf7 g6 may be better but in practical play this is a simpler way to win (the ending is an easy win with no counter-chances)
[¹32...g6 secures the win 33.fxg6 hxg6-+]
33.Qg4 h5! a convincing end
34.Qxh5 Qxh5 35.Bxh5 Rxa4 [35...Bxg2+?! 36.Kg1 Be4 37.Bd1µ]
36.Bg6 Rxd4 37.Rf1 Rd2 38.Rc1 Threatening mate: Rc8
38...Rc2 [38...Bxg2+?! is the weaker alternative 39.Kg1 Kf8 40.Rc7=]
39.Rxc2 Bxc2 40.Be8 Bxf5 [¹40...a4 and Black has triumphed 41.Bh5 a3-+]
41.b6 Kf8 42.Bc6 Bc8 [42...bxc6 43.b7]
43.Bxd5 Ke7 44.g4 Kd6 [44...Bxg4?! 45.Bxb7 Kd6 46.Bd5-+]
45.Be4 a4 46.g5 fxg5 47.hxg5 Kc5 48.Kg2 Kxb6 49.Bd5 Kc5 50.Ba2 b5 [50...b5 51.Kg3 b4-+]
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