Anna Ushenina vs Antoaneta Stefanova (2012)

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Anna Ushenina vs Antoaneta Stefanova
Women's World Championship Knockout Tournament (2012) (rapid), Khanty-Mansiysk RUS, rd 6, Dec-01
Semi-Slav Defense: Accelerated Meran Variation (D45) · 1-0

ANALYSIS [x]

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Dec-01-12		David2009: Congratulations to our new Women's World Champion and to our newest Grandmaster! Both titles very well deserved. This game is typical of the determined chess by both players that has characterised this final. With the benefit of the computer (unavailable to the players at the time!) it appears that Black, in a difficult ending, went wrong at move 35: click for larger view 35...g5 was played after which 36.Rf6 allowed White to penetrate. Instead 35...Be8 is recommended by Fritz (and also by Houdini at the time of posting, temporary link http://chess2012.ugrasport.com/houd...). One continuation might be 36.Kf4 (36.Be8 Rxe8 seems fine for Black) 36...Bxb5 37.axb5 38.Kg5 Rbb7! an apparently passive move with a sting in its tail: the threat is Ra2 with significant counter-play e.g. the pawn grab 39.Rcc6!? Ra2 40.Rxb6!? (or 40...Rf6 Rxf2 41.g4 equal) is met by 49...Rf7 click for larger view when White (to play) cannot prevent Black from recovering the Pawn with at least equality.

Dec-01-12		Nerwal: Again great tiredness and nervosity were patent in that final rook endgame. In any other situation white would certainly have played 60. ♔e5 followed by 61. ♖h4, probably shortening the game by some 30 moves as it's unlikely black would be keen on playing on three pawns down. Also 86. f7 ♖a6+ (86.... ♖f8 87. ♖f5 and everything is clear) 87. ♔e7 ♖a7+ 88. ♖d7 ♖xd7+ 89. ♔xd7 ♔xf7 90. e5 was winning by force, but white apparently still hoped to avoid concrete lines. After 35... ♗e8 36. ♔f4 ♗xb5 37. axb5, white probably wouldn't play her king to g5 immediately, but possibly a plan based on f3 or g4 using the active king position at f4. It may well that the four rooks endgame is a draw anyway, but black still has some work ahead.

Dec-01-12		Novirasputin: Without a computer present on move 24 would there be any advantage or disadvantage in playing Ne7 check? Before taking the Queen? It seems that delays the recapture of the knight?

Dec-01-12		Nerwal: 24. ♘e7+ doesn't win time, but help the black king reaching the center of the board where it often belongs in endgames. It's possible that it doesn't make all that much of a difference here, but based on endgames principles white doesn't want to play this way unless there is a concrete reason.

Dec-01-12		Novirasputin: I thought so but it seems it helps the rook invade the 7th

Dec-01-12		Novirasputin: In Other words if the king comes out to get the knight the rook threatens the 7th with tempo

Dec-04-12		kingfu: Seems like Stefanova went down hill after 16...b6. Would 16...Nf6 been better?

Mar-24-24		Cecco: <Nerwal: Again great tiredness and nervosity were patent in that final rook endgame. In any other situation white would certainly have played 60. ♔e5 followed by 61. ♖h4, probably shortening the game by some 30 moves as it's unlikely black would be keen on playing on three pawns down.> This is certainly true, but perhaps it's worth mentioning that this game had a rapid 25+10 format. Probably by the 60th move both players were moving on average every 10 seconds.

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