Vugar Gashimov vs David Navara (2011)

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Vugar Gashimov vs David Navara
Reggio Emilia (2010/11), Reggio Emilia ITA, rd 8, Jan-05
Spanish Game: Morphy Defense. Breyer Defense Zaitsev Hybrid (C95) · 1-0

ANALYSIS [x]

FEN COPIED

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Jan-05-11		tamar: Is the final position winning for White?

Jan-05-11		jmactas: <tamar> I believe so. There is no way for black to make progress with his pawns. The white rook on b6 is going to capture the black pawns on b5 and c4 and white will then run with the c pawn, which will win the game.

Jan-05-11		Eyal: Yeah, according to the live broadcast I was following it looked like Navara flagged, but apparently his position at the end is lost anyway. One nice line goes: 54...Rc8 55.Rxb5 c3 56.Rc5! Rxc5 57.bxc5 c2 58.Rc3 c1=Q+ 59.Rxc1 Bxc1 60.c6 and Black cannot stop the white pawn from queening.

Jan-05-11		Eyal: ...In that line, I think White should also be winning after 56...Rb8 57.Rcxc3 (57.b5 c2 and the swap happens anyway) Rxb4. At least, if you take a pair of rooks off the board it's a tablebase win.

Jan-06-11		picard: yeah after 56...Rb8 57 Rcxc3 Rxb4 white will eventually advance the h pawn. black's e pawn and the bishop need each other for protection and can't advance with white's extra rook lurking. eventually something will give, a rook trade will be forced and then it's an easy win for white.

Jan-06-11		Albertan: Hi, I have analyzed this game on my quad-core computer with the help of Deep Rybka 4x64 and posted this analysis to my blog at: http://albertan1956.blogspot.com/20... I hope you drop by and play through this analysis. Deep Rybka 4x64 showed exactly where the errors and the good moves were played in this game.

Jan-06-11		ounos: 41. ...Rb3! only move

Jan-06-11		ounos: Ah, I see Albertan's rybka spotted that too :) Every other retreat square for the rook falls under 42. Rxe5!

Jan-06-11		Hesam7: Position after 42. Rf1: click for larger view Black is two pawns up and it seems that White does not have enough compensation. However in every line White can generate some counterplay based on Black King's weak defence: 42. ... Be7 43. Ra6! Qd5 44. Qf5! Rg3 45. Rf2 42. ... Re7 43. Ra8 Rd3 44. Qh4! Re8 (White was threatening to take on f8) 45. Rxe8 Qxe8 46. Qg4+ Granted both these lines are better than what Navara chose to play but it shows that White has many hidden resources available to him in the position which should not be underestimated.

Jan-06-11		Eyal: Yeah, Gashimov played very resourcefully in the later stages of the game to get counter-chances. According to what I remember from the live broadcast on chessbomb, Navara thought for quite a long time on his 42nd move, showing that he realized a win isn't going to be easy (even though he didn't have to lose...). The best chance to finish White off was perhaps on move 37, with ...e4! (instead of Qc8) click for larger view allowing Black to combine threats on the white rook and along the a7-g1 diagonal. For example: 38.Qe2 Bf8 39.Be3 Rxe3! 38.Be3 Qd5 39.Rc7 Qd6 40.Rb7 Rxe3! 41.Rxe3 Qc6 42.Ra7 Qb6. 38.Rf1 Qh5 39.Qf2 (39.Rbxf7 Be5 40.Bf4 Qxf7) 39...e3 40.Qxf7+ Qxf7 41.Rbxf7 e2. 38.Qf2 (relatively best) Qd5 39.Rb6 (39.Rc7 e3! 40.Bxe3 Rd1! 41.Bd2 [41.Rxd1 Qxd1+ 42.Kh2 Be5+] 41...Rexe1+ 42.Bxe1 Qe5 43.Qxf7+ Kh7 44.Qxg7+ Qxg7 45.Rxg7+ Kxg7) 39...b4! 40.Rxb4 (40.cxb4 Bd4) 40...Bf8 and White has to give up the exchange (41.Rb6 Bc5; 41.Ra4 Bc5 42.Be3 Bxe3 43.Rxe3 Rxe3 44.Qxe3 Qd1+ and Qxa4).

Jan-06-11		Eyal: When playing 42...Qd5? Navara obviously missed the strength of the temporary piece sac 43.Be3! (both an immediate 43.Rxf7 and 44.Qxe3 are met by ...Qd4!)

Jan-06-11		sevenseaman: This game goes like tug-of-war.

Jan-06-11		Hesam7: <Eyal: he best chance to finish White off was perhaps on move 37, with ...e4!> Position after 37. ... e4! 38. Qf2 Qd5: click for larger view Stockfish gives your main line with -2.66 @ depth 29. Also it thinks 38. ... Re6 would have been be pretty decisive as well: -2.38 @ depth 30.

Jan-06-11		tamar: It is hard to find a solid winning line at move 42 for Black, perhaps why Navara took so long on that move. If 42...Be7 43 Ra6! click for larger view idea is to deflect the queen from f7 43...Qd5 44 Qf5 Rg3 45 Rf2 f6 46 Kh2 Rg7 47 Bh6 Qd4 48 Qh5 and the eval goes to 0.00/19 after either 48...Rd8 or 48...Qxf2

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