(1) Prozhanski, Tsesarsky,0800 - Semi-Tarrasch with 5 e3 [D40]
28.05.2007



1.Nf3 Nf6 2.c4 e6 3.Nc3 c5 4.e3 a6 5.d4 d5 6.dxc5 Bxc5 7.a3
Moves after the blue 'critical opening position' are my repertoire

7...dxc4 8.Qxd8+ Kxd8 9.Bxc4 b5 10.Be2?!
[>=10.Bd3 Bb7 11.Ng5! (11.Ke2 Nbd7 12.Rd1 Ke7 13.Bd2 Rac8 14.e4 Bd6 15.b4 Nb6 16.Kf1 Ng4 17.h3 Ne5 18.Nxe5 Bxe5 19.Rac1 Rhd8 20.Ke2 Nc4=/+ 1/2-1/2 Dunkelblum,A-Petrosian,T/Varna 1962/(43); 11.b4 Bd6 12.Bb2 Ke7 13.Ke2 Nbd7 14.Rac1 (14.Rhc1 Rhc8 15.h3 Nb6 16.e4 Nc4-/+ 0-1 Brunner,L-Staniszewski,P/Oslo 1983/ (34)) 14...Rac8 15.Rhd1 (15.h3 Nb6 16.Nb1 Rhd8 17.Nbd2 Na4 18.Ba1 g6 19.Bxf6+ Kxf6 20.Be4 Rxc1 21.Rxc1 Rc8 22.Rxc8 Bxc8=/+ 1/2-1/2 Johner,P-Teichmann,R/Carlsbad 1911/ (48)) 15...Rhd8 16.g3 Bxf3+ 17.Kxf3 Ne5+ 18.Ke2 Nxd3 19.Rxd3 Bb8 20.Rxd8 Kxd8 21.Na2 Bd6 22.Bd4= 1/2-1/2 Rubinstein,A-Maroczy,G/Vienna 1908/ (29)) 11...Ke7 12.Nce4 Nbd7 13.Bd2 Rhc8 14.Rc1 Ke8 15.Ke2 1/2-1/2 Danailov,S-Renet,O/BUL-FRA 1985 (15)]

10...Bb7 11.b4 Bd6 12.0-0 Ke7=/+
This position is not dead draw! There is big difference between Nc3 and Nb8 (d7), Ke7 and Kg1. [12...Nbd7 13.Bb2 Ke7 14.Rfd1 (14.Rac1 Rhc8 (14...Rac8 15.Nb1 e5 16.Nbd2 Bd5 1/2-1/2 Inkiov,V-Seirawan,Y/Zagreb 1987/ (16)) 15.Nb1 Nb6 16.Nbd2 Na4 17.Be5 Bxe5 18.Nxe5 Nc3 19.Bd3 Rc7 20.Nb1 Rac8=/+ ) 14...Rhd8 (14...Nb6 15.Nd4 Rac8 16.Nb3 Ne4 17.Nxe4 Bxe4 18.Rdc1 Na4 19.Bxg7 Rxc1+ 20.Nxc1 Rc8 21.f3 Bg6 22.e4 Bf4 23.Nd3 Be3+ 24.Kf1 f6 25.e5 f5 26.Bf6++/= 1-0 Hebden,M-Bonin,J/London Lloyds 1989/ (37)) 15.Rd2 Nb6 16.Rad1 Rd7 17.Kf1 Rad8 18.h3 h6 19.Rd4 Rc8 20.R4d2 Bxf3 21.gxf3 Be5=/+ 0-1 Vidmar,M-Rubinstein,A/Prague 1908/ (36)]

13.Nd4
[Also doesn't help 13.Bb2 Nbd7 14.Rac1 (14.Rfd1 Rhc8 (14...Nb6 15.Rd2 Rac8 16.Nd4 Nc4 17.Bxc4 Rxc4 18.Rad1 Rhc8!=/+ ) 15.Rd2 Nb6 16.Rad1 Rd8= ) 14...Nb6 15.Nd2 Rac8 16.Rfd1 Rhd8 17.Ncb1 Na4 18.Ba1 Bd5 19.f3 Bb8 20.Kf2 Ba7 21.Nc3 Nxc3 22.Bxc3 Ne8 23.Nf1 f6 24.Ke1 Nd6 25.e4 Bb3=/+ 0-1 Husari,S-El Ghazali,Y/Doha ,EXT 1992/ (59)]

13...Rc8!
In some variations White can play a3-a4, so Ra8 remains in the corner.

14.Bb2 Nbd7
Nc3 placed bad.

15.Nb3 Be5 16.Rac1
[16.Rfc1 Ne4 17.Nd1 Bxb2 18.Nxb2 Nc3 19.Bf1 Bd5 20.Nd2 Nb6 21.Nd3 Nba4 22.Nc5 Nxc5 23.Rxc3 Na4-/+ ]

16...Ne4! 17.Nxe4
[17.Nd4 Nd2 (17...Bxd4 18.exd4 Nxc3 19.Bxc3 Bd5-/+ ) 18.Rfd1 Nc4 19.Bxc4 (19.Na4 Nxe3 20.fxe3 bxa4-/+ ) 19...Rxc4=/+ ]

17...Bxb2!
[I calculated variation 17...Rxc1 18.Rxc1 Bxb2 19.Rc7 Bxe4 but here I noticed 20.Nc5! Bc6 (20...Rd8 21.Nxe4 Bxa3 22.Nc5 Bxb4 23.Nxa6 Ba5 24.Rb7= ) 21.Rxc6 Nxc5 22.bxc5 Bxa3 23.Rc7+ Here Black has advantage, but I was afraid, White Pc5 is very strong.]

18.Rxc8 Rxc8
[18...Bxc8 19.Na5 Bxa3 20.Ra1 Bb2 21.Ra2<=> ]

19.Nec5 Bd5 20.Nxd7?-+
[Better was 20.Rb1 Bxb3! (20...Bxa3 21.Nxa6 Bc4 22.Nd4 (22.Bf1 e5 23.Ra1 Bb2 24.Rb1 Bc3 25.Na5 Bxf1 26.Kxf1 e4 27.Rc1 Ne5 28.Rc2 Nd3=/+ ) ) 21.Rxb2 (21.Nxb3 Bxa3 22.Nd4 Rc3-/+ ) 21...Nxc5 22.bxc5 Bc4-/+ ]

20...Bxb3 21.Nc5 Bc4!
Wins immediately

22.Bxc4 bxc4 23.a4 Rxc5 0-1