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Evgeny Sharapov vs Georgy Anatolyevich Timoshenko
UKR-chT (1998), Alushta
French Defense: Winawer. Advance Variation General (C16)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Jul-19-06  pebble767: I got 18.Bxh6 but I didn't realize 18...f5 so I didn't calculated that line =(
Jul-19-06
Premium Chessgames Member
  mig55: Maybe Sharapov didn't figure out the solution neither after not taking?
Jul-19-06
Premium Chessgames Member
  jahhaj: I don't think you have to calculate the lines if Black refuses to accept the sacrifice. Just a waste of mental effort.

Of course you do have to calculate should the sacrifice be accepted. The two key moves I think are 19.Qh3+ and 20.Rh3 respectively in the first and second lines that <patzer2> gives.

Quite a long and difficult calculation for Wednesday.

Jul-19-06
Premium Chessgames Member
  Honza Cervenka: <patzer2> After 18... Kxh6 19. Qh3+ Kg6 20. Nh4+ Kg5 (20...Kh7 21.Ng6+ Kxg6 22.Rg3# or 21...Kg8 22.Qh8#) I was calculating different line: 21.Rg3+ Kf4 22.Re1 (quiet move, now 23.Qg4# is threatening) 22...Nxe5 (22...f5 23.Ng6#; 22...Nf6 23.Ng6+ fxg6 24.Qh4+ Kf5 25.Qg5#) 23.Ng6+ fxg6 (23...Nxg6 24.Qg4#) 24.Qh4+ Kf5 (24...Ng4 25.Qxg4#) 25.Qg5#.
Jul-19-06
Premium Chessgames Member
  Peligroso Patzer: <patzer2: ... Also, Black can put up more resistance with 20...Kh8!?, but White seems to have just enough for an endgame win after 20... Kh8 21. Nxe6 Nxf6 22. Nxc7 Nxg4 23. Nxa8 Rxa8 24. Rc3 Nd4 25. Rxc5 Ne2+ 26. Kh1 Rf8 27. f3 Rf7 28. Rc8+ Kg7 (+1.72 @ 15 depth, Fritz 8).>

I couldn't find anything clearly winning for White in the line with 20. ... Kh8, and I am gratified that Fritz couldn't either. The line given by <patzer2> is certainly promising for White, but not nearly as clear as the game continuation. (After Black's 20th move, White has mate in four.) For a player of Timoshenko's strength, 20. ... hxg5 is a surprisingly weak move that surrenders all chances for continued resistance.

Jul-19-06  outplayer: I saw the posibility of 18.Bxh6! but didn't analyze it well. I would like someone to analyze the 18.Ng5+!? line with their strong computers.
Jul-19-06  DexterGordon: <patzer2> and <Peligroso Patzer>, what is Black's best in the 20. ... Kh8 line after 21.Rh3? I'm looking at 21...Nxf6 and 21...Ne5 but have neither board nor chess engine to help me!
Jul-19-06  patzer2: <Honza Cervenka> Thanks for pointing out that <quiet move> possibility. <Dexter Gordon> I gave what I found as the best line after 20...Kh8 and a long search with Fritz 8 in my previous post. It's not an easy endgame win, or without drawing possibilities, but I believe it's White's best shot.
Jul-19-06  patzer2: <Peligroso Patzer> Indeed, 20...Kh8 is the move Black should have played, as it makes the win at best difficult and at worst unclear. However, IMO the Fritz assessment as just enough for an endgame win after 20...Kh8 21. Nxe6 is probably correct.
Jul-19-06  Marmot PFL: Got it very quickly as Ra3-h3 is too obvious to miss, and the Bc1 targets h6.

<Indeed, 20...Kh8 is the move Black should have played, as it makes the win at best difficult and at worst unclear. However, IMO the Fritz assessment as just enough for an endgame win after 20...Kh8 21. Nxe6 is probably correct.> That is an easy endgame win after 21.Ne6 Nf6 22. Nc7 Ng4 23. Na8 Ra8 24.Rc3 etc. Rooks are much stronger than knights in open ending positions and white has too many pawns.

Jul-19-06  RonB52734: I was pretty well convinced that 18.Ng5+ was the solution, but after 18. Ng5+ Kg8 it looks very unclear to me.
Jul-19-06
Premium Chessgames Member
  kevin86: I looked at Bxh6 BEFORE I looked at Ng5+ but I settled on the latter. If the sac is accepted,it's gravy-but on declining it,theposition is unclear.
Jul-19-06  YouRang: Bah! I hastily went with 18. Ng5+, thinking it was a clearance sac to bring the rook to h3 after 18...hxg5 19. Qh5+, but it doesn't close all of Black's get-away squares. The best I can do is force a draw.
Jul-19-06  dehanne: <E. Sharapov could be Maria Sharapova's dad if he has an 'a' after the 'v.' (all right, it sucks dirt!) >
That could explain why Sharapov is notorious for squeeling and groaning at 100 dB while making moves. Must be something in the family.
Jul-19-06  Chess Classics: <YouRang> I did the same thing...after 18. Ng5+ I had 18...hxg5 19. Qh5+ Kg8 20. Rh3 not seeing that the king could escape with f7-f6. Oh well.

Regards,
CC

Jul-19-06  YouRang: <Chess Classics> Good to know. I mean if two brilliant minds make the same mistake, then it must be a pretty excusable mistake, right? :-)
Jul-19-06
Premium Chessgames Member
  Peligroso Patzer: <DexterGordon: <patzer2> and <Peligroso Patzer>, what is Black's best in the 20. ... Kh8 line after 21.Rh3? I'm looking at 21...Nxf6 and 21...Ne5 but have neither board nor chess engine to help me!>

After 20. ... Kh8, if White plays 21. Rh3, then 21. ... Rxf6 (defending both e6 and h6) seems to give Black the advantage.

Jul-19-06  chessic eric: 19...Nxf6 looks good to me for black, then 20.Qh4,gxh6 21.Ng5+,Kg6!? 22.Rg3,Kf7 or 20.Ng5+,Kg6!?

anyone see problems with this defense?

Jul-19-06  patzer2: <DexterGordon> <Peligroso Patzer> After 20...Kh8 21. Rh3? Rxf6! , Black not only has the advantage but has turned the tables and is winning.
Jul-19-06  patzer2: <chessic eric> Your 19...Nxf6 also looked good to me, but Fritz 8 indicates it fails to 20. Ng5+!


click for larger view

(position after 19...Nf6 20. Ng5+!)

Analysis by Fritz 8 (@ 15 depth):

1. (2.28): 20...Kg6 21.Qh3 Nd4 22.Nxe6 Nxe6 23.Rg3+ Kf7 24.Re1 Qxg3 25.fxg3 Rae8 26.Bd2 Nd4 27.Rxe8 Rxe8 28.c3 Nb3 29.Bg5

2. (2.25): 20...Kg8 21.Qxe6+ Kh8 22.Bxg7+ Kxg7 23.Rg3 Nd4 24.c3 Nxe6 25.Nxe6+ Kf7 26.Nxc7 Rad8 27.Re1 Rd6 28.Nb5

3. (2.50): 20...Kxh6 21.Qh4+ Nh5 22.g4 g6 23.Nxe6 Qe7 24.Qxe7 Nxe7 25.Nxf8 Rxf8 26.gxh5 Kxh5 27.Rc3

4. (5.44): 20...Kh8 21.Bxg7+ Qxg7

Jul-19-06  patzer2: The position after 19...Nxf6 20. Ng5+! Kg6 (position below) makes for a fascinating puzzle:


click for larger view

[Find White's winning move(s) after 19...Nxf6 20. Ng5+! Kg6.]

Hint: Solution is in post above.

Jul-19-06  belka: What is White's play after 18. Ng5+ Kh8?

I see 19. Nxe6 fxe6 20. Qxe6, but I am not sure that this is enough.

Jul-19-06  dakgootje: Think i got most continuations, even nearing midnight, so lets count it as a solved puzzle ^^
Jul-19-06  patzer2: <belka> If your question is what happen's if White plays <18. Ng5+> in the game continuation, the answer is the reply 18...hxg5 takes away White's forced win and gives Black the advantage after 19. c4! Nxe5 20. Rh3+ Kg8 21. Qh5 f6 22. cxd5 exd5 .
Sep-07-06
Premium Chessgames Member
  whiteshark: <patzer2>: Your continuation <18...hxg5 19. c4 Nxe5 20. Rh3+ Kg8 21. Qh5 f6 22. cxd5 exd5> on <belka>s <18. Ng5+> doesn't give Black the (any) advantage, e.g. 23.Bxg5 fxg5 24. f4 Nf3+ 25. Rxf3 g4 26. Qh7+ Kf7 27. Rhg3 and this looks at least equal. Here is my main line: 27...Qd7 28. f5 Qxa4 29. f6 Qd4+ 30 Rf2 Ke6 31. Qxg7 Rxf6 32. Re3+ Qxe3 33. Qxf6+ Kd7 =

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