I have a copy of an article on this subject  don't ask me were I found it. Here it is.
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 [Bulgarini] 1.e4 c5 2.Nc3 Nc6 3.f4 g6 4.Nf3 Bg7 5.a3!? e6 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? 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 00 10.Ba3 Nbd5 (10...Na6=) 11.c4²; A1b) 8...Bf8 9.Ba3 b6 10.Be2 Bb7 11.00=; 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! 10 Urquhart,EWight,K/Ontario CAN 2002/[GaryLane] (16)] 7.e5 [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 00) 10...00 11.c4 Qa5+=; B) 8...Bg4!? 9.Be2 (9.Rb1 Qe7+ 10.Qe2 Bxf3 11.gxf3 Bxc3 12.dxc3 000³) 9...Bxc3 10.dxc3 Nf6 (10...Qe7 11.Qxd5) 11.Nd4÷ Qe7 12.00] 7...f6 [7...cxb4 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 14.00 Nd5 15.g3 00 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 01 Gallegos,PAwate,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 00 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# 01 Freeman,RGourlay,I/Birmingham 2001 (26)] 9.axb4 [9.Bxc6+ bxc6 10.axb4 Ne7 (10...fxe5 11.fxe5 Ne7 12.d4) 11.d4=] 9...Nge7 [9...fxe5 10.Bxc6+ bxc6 11.fxe5²] 10.Bxc6+ [10.00] 10...Nxc6 [10...bxc6 11.Na4 Rb8 12.c3²] 11.b5 Na5 [11...Ne7 12.Ba3 00 13.Qe2²] 12.d3 [12.Ba3 Nc4 13.Bc5²] 12...a6 [12...fxe5 A) 13.fxe5 Bd7 (13...a6) 14.Be3; B) 13.Nxe5 13...Bxe5 14.fxe5 00 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, Sergev
