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Normal Topic Analysis 1.e4 c5 2.Nc3 Nc6 3.f4 g6 4.Nf3 Bg7 5.a3! (Read 2623 times)
Gary Lane

Re: Analysis 1.e4 c5 2.Nc3 Nc6 3.f4 g6 4.Nf3 Bg7 5
Reply #1 - 02/24/03 at 17:17:31
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Good to see that the unusual line has inspired you to take a closer look at the analysis. I wonder if anyone is brave enough to play it in a tournament soon?
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Analysis 1.e4 c5 2.Nc3 Nc6 3.f4 g6 4.Nf3 Bg7 5.a3!
02/17/03 at 15:35:27
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Complementary Analysis:

The last month I found a closed sicilian game commented by Gary Lane about the interesting line:

1.e4 c5 2.Nc3 Nc6 3.f4 g6 4.Nf3 Bg7 5.a3!?

I consulted with my chessfriend Marco Bulgarini (correspondence player) if he had any experience using this line and he gave me your last game with  this line and show me any analisys how complement of the Lane's analysis.

Here are the analysis:

Bulgarini,,M (2355) - Cardozo,  ,C (2406) [B23]
WCCC 2002, semifinal N°26 ICCF,grupo 8, 01.09.2002

1.e4 c5 2.Nc3 Nc6 3.f4 g6 4.Nf3 Bg7 5.a3!?  e6

[A main line is 5...d6 
6.Bc4  e6 (6...Bg4 7.Bxf7+ Kf8 8.Bd5 Qa5 9.Bxc6 bxc6 10.h3± Be6  11.0-0 h6 12.e5 Bc4  13.Nh4 Bf7 14.f5 gxf5 15.Rxf5 Rh7 (15...Bxe5 Marco Bulgarini Torres 16.Ng6+ Kg7 17.Nxh8 Be8 18.Qg4+ Kxh8 19.Rf1+-) 16.Ng6+ Ke8 17.Qf3 Bd5 18.Nxd5+- Qd8 19.e6+-  Bulgarini-Romito/ICCF,EM/M/A095 2000/[Marco Bulgarini Torres]) 7.d3
(7.f5 exf5 8.d3 Nge7 9.0-0 0-0 10.Qe1 Nd4 11.Qh4 Nxf3+ 12.Rxf3 fxe4 13.dxe4 d5 14.Bg5 dxc4 15.Bxe7 Qd4+ 16.Kh1 Be6 17.Rd1 Qe5 18.Bxf8 Rxf8 19.h3 g5 20.Qg3 g4 21.Qxe5 Bxe5 22.Rff1 gxh3 23.Nd5 hxg2+ 24.Kxg2 f6 25.c3 Kg7 26.Nxf6 Bxf6 27.e5 Rf7 28.exf6+ Rxf6 29.Rxf6 Kxf6 30.Kg3 Ke5 31.Re1+ Kd5 32.Rh1 Bf5 33.Kf4 Bd3 34.Rh6 Bg6 35.Kg5 - Roach,P-Silva,F/Thessaloniki olm 1988/TD 88\06 (35))
7...Nge7 8.0-0 (8.Qe2 Nd4 9.Qf2 Nec6 10.0-0 0-0 11.Nd1 Kh8 12.Ng5!?) 8...0-0 9.Qe1 d5 10.Ba2 f5 11.e5 a6 12.Qf2 b6 13.Bd2 (Gary Lane comment:led to roughly equal play in Kovachev,D-Kedyk,D/Lysaker 2002.]

6.b4 d5 !?

(Bulgarini) An almost new theoretical move , maybe my rival don't found a satisfactory move with security for your position. now the question is what is the best move for the white side?

[Here exist importants deviations:
6...d6(GaryLane analysis) 7.bxc5 dxc5 8.e5 this is the point of White's play in the gambit line to control the d6 square and make room for a white knight to occupy e4. The difference here is that White has not had to sacrifice anything 8...Nge7 (8...f6!? is necessary to stop White dominating the position) 9.Ne4 0-0 10.Nxc5 White simply wins a pawn, which is a great advert for the opening 10...Nf5 11.c3 b6 12.Nb3 (12.Ne4 Bb7 13.d3 with the brighter prospects) 12...Bb7 13.d4 Rc8 14.Bd3 Nce7 15.Bd2 Nd5 16.Rc1 Bh6 17.g3 Qe7? 18.Bxf5! exf5 19.c4 with a winning advantage for White,Johnsen,S-Hagesaether,H/Oslo NOR 2002.;

6...b6 ( Bulgarini,M: 6...b6  is a respectably move where I had a good experience) 7.e5 d6 8.Bb5 Nge7 9.bxc5 bxc5 10.Ne4 dxe5 11.Bb2 0-0 12.Bxc6
(12.Bxe5 Nxe5 13.fxe5 Bb7 14.Qe2 Rb8 15.Bd3µ; 12.Nxc5 Qd5 13.Bxc6 Nxc6 14.Nb3-+) 12...Nxc6 13.fxe5 Qd5 14.Nf6+ Bxf6 15.exf6 Qe4+ 16.Qe2 Qxc2 17.Bc3
A) 17...Qf5 18.0-0 Qh5 19.Qe4 Bd7 20.Rae1 Rfd8 21.Qf4 h6 (21...Rac8 22.h4 Rb8=) 22.g4 Qh3 23.Re3=;
B) 17...Nd4 18.Nxd4 cxd4 19.Bxd4 Qf5 20.Qe3 Kh8 21.Rf1 Qh5
B1) 22.Rf3!? Deberķa haber considerado esta jugada!    
   B1a) 22...Qh4+ 23.Kf1 Rd8 24.Bc3 Ba6+ 25.Kg1 Bb7 (25...Rd3 26.Rh3 Rxe3 27.Rxh4 Rd3 28.Ra4²) 26.Rf4 Qg5 27.Qg3 Qxg3 28.hxg3 Ba6= (28...Kg8 29.Kf2 Rd5 30.Rb1 Bc6 31.Rc4 Bb5 32.Rcb4 a6 33.a4 Be8 34.Rh4 Rf5+ 35.Ke3 Bc6 36.g4 Rg5 37.Rbh1 h5 38.gxh5 gxh5 39.Rxh5 Rxh5 40.Rxh5 Bxa4 41.Rg5+ Kh8 42.Rg7 Rf8 43.Ke4² Bd1 44.Ke5 Bh5 45.Kd6) 29.Rb1 (29.Kf2) 29...Kg8;
   B1b) 22...Ba6 23.Rh3 Qg4 24.Bc3 Rfd8 25.Kf2 Bb7 26.Rg3 (26.Qg3 Rd4!?=) 26...Qh4 27.Kg1²;

B2) 22.Qe4 Ba6 23.Rf3 Rfd8 24.Rc1 Qb5³; B3) 22.Kf2 22...Rd8 (22...Ba6 Bulgarini Torres,M 23.Rfe1 Rfd8 24.Kg1 Qd5 25.Bc3 Bb7 26.Re2) 23.Kg1 Bb7 B3a) 24.Bc5 Ba6 (24...a5 25.Rab1 Ba6 26.Rfc1²) 25.Rfc1 Rd7 26.d4 Qh4 27.Qe5 Bb7 28.Rab1 Qg4³; B3b) 24.Be5 Qg4 25.Rf2 Qe4 26.Qxe4 Bxe4 27.Rf4 Bc2 28.Rc4 Rac8=; B3c) 24.Rf2 24...a6 25.Rb1 (25.d3) 25...Rd7 (25...Bc6 26.Be5 Rac8 27.d4 Bb5) 26.Be5 (26.Bc5 Bulgarini Torres,M: After the game I prefer this move 26...Rad8 27.d4 Bc6 28.Qf4 Bb5 29.h3 Rd5 30.Rc1 Rf5 31.Qc7 Rg8 32.Rcc2 Be8=) 26...h6 (26...Rad8 Bulgarini Torres,M 27.d4=; 26...Bd5 Bulgarini Torres,M 27.Rc1 Kg8 28.d4÷) 27.d4 Kh7 Hasta el momento sigo la variante principal del partido Bulgarini-Ermano Zonal Sudamericano ICCF 98-99 (27...Rc8 Bulgarini Torres,M 28.Rfb2 Bd5 29.Rc1 Rxc1+ 30.Qxc1 Kh7 31.Qc8=; 27...Bd5 Bulgarini Torres,M 28.Rc2 Kh7=) 28.Rc1 (28.Rc2 Bulgarini Torres,M 28...Qf5) B3c1) 28...Rc8 29.Rxc8 Bxc8 30.h3 Rb7=; B3c2) 28...Qh4; B3c3) 28...Rad8 B3c31) 29.Rb2 Rc8 30.h3= (30.Rxc8 Qd1+ 31.Kf2 Bxc8 32.Qc3 Bb7= 33.Qb4) ; B3c32) 29.Rfc2 29...Bd5 30.Rb2 Qg4 31.h3= Qh4 (31...Qe4 32.Qxe4 Bxe4 33.Rb6²) ; B3c4) 28...Bd5 29.Rff1 (29.Qe2 Qxe2 30.Rxe2 Raa7 31.Kf2 Rab7³; 29.Rfc2 Rb7 30.Qd2 Rd8=) 29...Rad8 (29...Rb7 30.Qd2 Rb3 31.Rc7 Kg8 32.Qc2 g5 33.h3=) 30.Rc3 Rb7 (30...Qg4 31.Qd2 Rb7 32.Bf4 Rb3=) 31.Qd2 g5 32.Rfc1= (32.Qd3+ Qg6 33.Qxg6+ Kxg6 34.Rfc1 Rdd7³) 32...Qg6 33.Qe2 Rb1 34.R3c2 Rxc1+ 35.Rxc1 Rd7³ Bulgarini,M-Soares,E/ICCF Zonal 1998/CBM 06/[Bulgarini Torres,M] (35);

6...cxb4 (Gary Lane: Black accepts the challenge) 7.axb4

A) 7...Nxb4 GaryLane
A1) 8.e5 Bulgarini Torres,M A1a) 8...Ne7 9.Nb5 0-0 10.Ba3 Nbd5 (10...Na6=) 11.c4²; A1b) 8...Bf8 9.Ba3 b6 10.Be2 Bb7 11.0-0=;
A2) 8.Ba3 8...Nc6 (8...Bxc3 Bulgarini Torres,M 9.dxc3) 9.Nb5 Bf8 10.Bd6 Bxd6 11.Nxd6+ Kf8 12.e5 gives White a great position for the cost of a mere pawn.;

B) 7...Nge7 8.b5 Nd4 9.e5! White adopts the accepted pawn structure in such positions to allow a white knight to come to e4.
  B1) An improvement is 9...Nxf3+ (GaryLane) when 10.Qxf3 d6 (10...d5 Bulgarini Torres,M 11.Qf2 f6 12.exf6 Bxf6 13.Rxa7 Rxa7 14.Qxa7 Nf5 15.Ba3 Kf7 16.g3 h5 17.Bd3 Re8 18.Kd1 Bd4 19.Bc5 Bxc5 20.Qxc5 Qd6 21.Qxd6 Nxd6 22.Ne2 Bd7 23.Nd4 Kf6 24.c3 Ra8 25.Ke2 g5 26.h4 gxf4 27.gxf4 Rg8 28.Kf3 Nf7 29.Be2 e5 30.fxe5+ Nxe5+ 31.Kf2 Ng4+ 32.Bxg4 Rxg4 33.b6 Ke7 34.Nf3 Rf4 35.Ke3 Re4+ 36.Kf2 Rf4 37.Re1+ Kd6 38.Kg3 Rg4+ 39.Kf2 Bf5 40.Re8 Be4 41.Ne5 Rxh4 42.Kg3 Rh1 43.d4 Rb1 44.c4 dxc4 45.Nxc4+ Kd5 46.Nd2 Rg1+ 47.Kh4 Bh1 48.Rd8+ ) 11.d4 gives White a small advantage.;
  B2) 9...Nef5?! 10.Ba3 The bishop on a3 stops Black castling giving White good attacking chances. 10...d6? (Wight should prefer 10...Nxf3+ GaryLane 11.Qxf3 d6 12.exd6 with an edge and victory is still a long way off in the distance.) 11.Nxd4 Nxd4 12.Bxd6 Urquhart has won an extra pawn and the attack still rages. 12...Bd7 13.Bc5 Bc8 14.Ne4 As usual a knight on e4 in this line is heading for the d6 square to create despair for Black. 14...Qd5 15.Bd3 b6 16.c4! 1-0 Urquhart,E-Wight,K/Ontario CAN 2002/[GaryLane] (16)]


[7.b5 dxe4 8.Ng5 Nd4 9.Ngxe4 b6µ;
7.exd5 exd5 8.bxc5
A) 8...Bxc3 9.dxc3 Nf6 10.Bb2 (10.Qe2+ Ne4 11.c4 0-0) 10...0-0 11.c4 Qa5+=;
B) 8...Bg4!? 9.Be2 (9.Rb1 Qe7+ 10.Qe2 Bxf3 11.gxf3 Bxc3 12.dxc3 0-0-0³) 9...Bxc3 10.dxc3 Nf6 (10...Qe7 11.Qxd5) 11.Nd4÷ Qe7 12.0-0]



A) 8.Nb5 Bf8 (8...f6 9.axb4 fxe5 10.fxe5 Nxe5 11.d4 Nxf3+ 12.Qxf3) 9.axb4 Bxb4 10.Ba3 Bxa3 11.Rxa3 Nh6 12.Qa1 Qb6 13.Nd6+ Kf8 14.Rb3 Qc7 15.Qb2 b6 16.Rc3± (16.Qc3©) ;
B) 8.axb4 Nxb4 9.Nb5 Nc6 10.Nd6+ Kf8 11.Ba3]

8.Bb5 cxb4 

[8...Qb6 9.Qe2 fxe5
(9...cxb4 10.Nxd5 Qd8 11.Nxb4 Bd7 12.Nxc6 bxc6 13.Bc4 Ne7 14.0-0 Nd5 15.g3 0-0 16.a4 Qa5 17.Ba3 Rfe8 18.Bd6 f5 19.Rfb1 Bf8 20.Bxf8 Rxf8 21.Nd4 Qc5 22.c3 g5 23.fxg5 f4 24.Bd3 Rf7 25.Rf1 Raf8 26.Qh5 Rg7 27.Kh1 Qe7 28.Nf3 c5 29.c4 Nb4 30.Be4 fxg3 31.hxg3 Bc6 32.Bxc6 Nxc6 33.Rae1 Rf5 34.Kg2 Qd7 35.Re4 Rgf7 36.Rf4 Ne7 37.Nh4 Rxf4 38.gxf4 Qxd2+ 39.Rf2 Qd3 40.Qf3 Qxc4 41.Qa8+ Kg7 42.Qxa7 Ng6 0-1 Gallegos,P-Awate,A/Palo Alto 1991 (42)).  10.Bb2±;
8...fxe5 Bulgarini 9.fxe5 Bd7;
8...Bd7 Bulgarini 9.Qe2 (9.Bxc6 Bxc6 10.Qe2²) 9...Nge7 10.bxc5 fxe5 11.fxe5 0-0 12.d4 Rxf3 13.Qxf3 Nxd4 14.Qd3 Nxb5 15.Nxb5 Qa5+ 16.Nc3 Bb5 17.Qh3 d4 18.Qxe6+ Kh8 19.Bd2 dxc3 20.Bg5 Nf5 21.Bf6 Re8 22.Qf7 Qa4 23.Kd1 Ne3+ 24.Ke1 Nxc2+ 25.Kf2 Qf4+ 26.Kg1 Qe3# 0-1 Freeman,R-Gourlay,I/Birmingham 2001 (26)]


[9.Bxc6+ bxc6 10.axb4 Ne7 (10...fxe5 11.fxe5 Ne7 12.d4) 11.d4=]


[9...fxe5 10.Bxc6+ bxc6 11.fxe5²]




[10...bxc6 11.Na4 Rb8 12.c3²]

11.b5 Na5

[11...Ne7 12.Ba3 0-0 13.Qe2²]


[12.Ba3 Nc4 13.Bc5²]


[12...fxe5 A) 13.fxe5 Bd7 (13...a6) 14.Be3; B) 13.Nxe5 13...Bxe5 14.fxe5 0-0 15.Rf1 (15.Qg4) ]

13.Ba3 Qb6

[13...fxe5 14.Nxe5 Bxe5 15.fxe5 Qh4+ 16.g3 Qd4 17.Ne2±]

14.Qb1 Line (Bulgarini: white is good)

Best Regards,

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