Alexandra Kosteniuk vs Antoaneta Stefanova (2006)

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Alexandra Kosteniuk vs Antoaneta Stefanova
Turin Olympiad (Women) (2006), Turin ITA, rd 10, May-31
Spanish Game: Morphy Defense. Neo-Archangelsk Variation (C78) · 0-1

ANALYSIS [x]

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Aug-24-06		Albertan: Here is some analysis of this game: Kosteniuk,Alexandra (2540) - Stefanova,Antoaneta (2502) [C78] 37th Olympiad w Turin ITA (10), 31.05.2006 Opening:ECO C78: Ruy Lopez: Archangelsk and Möller Defences 1.e4 e5 2.Nf3 Nc6 3.Bb5 The Ruy Lopez Opening. 3...a6 Morphy's idea forcing Kosteniuk to make a decision about the future of her bishop. 4.Ba4 Nf6 5.0-0 Bc5 Developing another minor piece and threatening ...Ng4. 6.c3 Giving her bishop an escape route in case Stefanova plays ..b5. 6...b5 The main continuation in this variation forcing the White bishop back. 7.Bb3 d6 Supporting her e-pawn and opening up the diagonal for her light-squared bishop. 8.d4 Attacking in the center. 8...Bb6 Preserving central tension. 9.a4 Creating the threat of 10.axb5.

Aug-24-06		Albertan: [Analysis:The most popular continuation for White is to play 9.h3 ie. 9.h3 Bb7 10.Re1 0-0 11.Bg5 h6 12.Bh4 Re8 13.d5 Nb8] Returning to the moves played in the game: 9...Bb7 10.Re1 Finally protecting her attacked pawn. 10...0-0 11.Bg5 Pinning Stefanova's king's knight. 11...h6 12.Bh4 Re8 Giving more protection to her e-pawn. 13.d5 Kosteniuk decides to close the center. [Analysis:White usually plays the move axb5 here: 13.axb5 axb5 14.Rxa8 Bxa8 15.Qd3 Na5 16.Bd5 Bxd5 17.exd5 e4 18.Rxe4 Rxe4 19.Qxe4 g5 20.Bxg5 hxg5 =] Returning to the moves played in the game: 13...Na5 Attacking the bishop. 14.Ba2 c6N This move may be a novelty for the position. Stefanova creates a triple attack against Kosteniuk's d-pawn. [Prior to this game two other moves had been tried by Black: (a) 14...Bc8 and (b)14...g5 (a) 14...Bc8 15.h3 g5 16.Bg3 Nh5 17.Kh2 Nxg3 18.fxg3 f5 19.exf5 Bxf5 20.axb5 axb5 21.Na3 Qd7 22.Nc2 Nc4 23.b3 Na3 24.Nb4 Rf8 25.Rf1 Ba5 26.Rf2 Bg6 27.Re2 Qh7 28.Rc1 Bxb4 29.cxb4 Pina,V-Coimbra,M (2076)/Bobadela 2001/CBM 81 ext/1-0 (40); (b) 14...g5 15.Nxg5 hxg5 16.Bxg5 Kg7 17.Qf3 Rh8 18.Nd2 bxa4 19.Re3 Bc8 20.Rd3 Bd7 21.Qg3 Qg8 22.Bh4+ Ng4 23.Rf1 Qh7 24.Nf3 Qxe4 25.Ng5 Qf4 26.Rf3 Qxg3 27.Rxf7+ Kg8 28.hxg3 Bb5 29.Rc1 El Taher,F (2445)-Kaabi,M (2345)/Cairo 1997/CBM 57 ext/0-1 (36)]

Aug-24-06		Albertan: Returning to the moves played in the game: 15.Nbd2 Kosteniuk develops her last minor piece,protecting her e-pawn. [Analysis: Other ideas were to play (a) 15.Bxf6 (Fritz 7) ie. 15.Bxf6 Qxf6 16.Na3 cxd5 17.Bxd5 Bxd5 or; (b)Hiarcs 8: 15.axb5 cxb5 16.b4 Nc4 17.Bxc4 bxc4 18.Na3 Rc8 19.Qe2 g5 20.Bg3 a5 ] 15...g5 16.Nxg5!? [Analysis:Hiarcs 8: 16.dxc6 Bxc6 17.axb5 axb5 18.Bg3 Nb7 (18...Nc4 19.Bxc4 bxc4 20.Rxa8 Bxa8) 19.b4 Qc7 ] The game continued: 16...hxg5 [16...cxd5? doesn't lead to anything significant 17.Nh3 Nc4 18.exd5 Bxd5 19.Nxc4 Bxc4 20.Qf3 ] 17.Bxg5 Kg7 Overprotecting her knight,which frees up her queen. [Analysis:Fritz 8: 17...bxa4 18.dxc6 Bxc6 19.Bd5 Rb8 20.Qf3 Kg7 =] 18.b4 Attacking the knight winning a tempo. 18...Nc4 19.Bxc4 [Analysis:Hiarcs 8: 19.Nxc4!? bxc4 (a)Fritz 7: 20.a5 ((b)Hiarcs 8: 20.dxc6 Bxc6 21.a5 Ba7 22.Bxc4 Bb5 23.Bxb5 axb5 24.Qf3 Rc8 ) 20...Ba7 21.dxc6 Bxc6 22.Bxc4 Bb7] Returning to the moves played in the game: 19...bxc4 20.Nxc4 Now Kosteniuk has three pawns for the piece. [Analysis:Hiarcs 8: 20.dxc6 Bxc6 21.Nxc4 Bc7 22.Qf3 Re6 23.Ne3 Qg8 24.Nf5+ Kh8 25.Nxd6 Qg6 26.Bxf6+ Rxf6 27.Nf5 Re8 ] The game continued: 20...cxd5 21.exd5 Ba7 Analysis:Hiarcs 8: 21...Rc8 22.Bxf6+ Kxf6 23.Qf3+ Ke7 24.Nxe5 dxe5 25.d6+ Qxd6 26.Qxb7+ Rc7 27.Qe4 f6 =] Now Kosteniuk blunders when she plays: 22.Qf3?? Analysis:The Shredder 8 chess program gave this move the ?? (blunder) annotation stating: "this move [gives the opponent counterplay. [Analysis:Better was >=22.Ne3 and White is still in the game 22...Kg6 23.Bh4 Rh8 24.Qb1+ Kg7 25.Qf5 Rh6 26.Ng4 Rxh4 27.Qg5+ Kf8 28.Qxh4 Nxg4 29.Qxg4 Bxd5 ] Returning to the moves played in the game: 22...Bxd5 23.Bxf6+ [Analysis:Worse is 23.Qxd5? Nxd5 24.Bxd8 Rexd8 25.Rad1 Nxc3 26.Rxd6 Rxd6 27.Nxd6] Play in the game continued: 23...Qxf6 24.Qxd5 Bxf2+ 25.Kh1 Rh8 Creating the threat of 26...Rxh2 27.Kxh2 Qh4 checkmate. [Analysis:Shredder 8: 25...Bxe1 26.Rxe1 Rad8 27.Ne3 Qe6 28.Qf3 d5] The game continued: 26.h3 Qf5 [Analysis: Not 26...Bxe1 27.Rxe1 Rad8 28.Ne3=] 27.Rg1?? Strolling merrily down the path to disaster [Better was >=27.Re3 Bxe3 28.Nxe3 Rxh3+ 29.Kg1 Rxe3 30.Rf1 ] The game concluded: 27...Bg3 Kosteniuk resigned [Analysis: 27...Bg3 28.Qxf7+ Qxf7 29.Nxd6 Qd7 30.Rgd1 Rxh3+ 31.Kg1 (31.gxh3?? Qxh3+ 32.Kg1 Qh2+ 33.Kf1 Qf2#) 31...Rah8 32.gxh3 Qxh3 33.Nf5+ Kf6 34.Nxg3 (34.Rd6+ Kxf5 35.Rh6 Rxh6 36.Rf1+ Kg5 37.Rf5+ Kxf5 38.b5 Qh1#) 34...Qxg3+ 35.Kf1 Rh1+ 36.Ke2 Rh2+ 37.Kf1 Qf2#] 0-1

May-01-07		littlekarpovhorrors: Why 27 Bg3? Doesn't 27 Rxh3+ lead to mate next move?

May-02-07		sneaky pete: It doesn't, if 27... Rxh3+ 28.gxh3+ ..

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