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Igor V Glek vs Dimitrij Bunzmann
TCh-FRA Top 16 (2007), Clichy FRA, rd 8, May-31
French Defense: La Bourdonnais Variation (C00)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 3 ·  Later Kibitzing>
Jun-16-11  fischer2009: <Once> Learning about chess basics,development of pieces,i always got confused y anybody should play the french defense,jamming in the c8 bishop as if for ever,no better life on b7 either,Ba6 exchanging light squared counterpart remaining a wild hope.3 years with chess,i understand chess much more.The secrets started revealing itself.Wen i saw many games say like in carokan advance variation where the bishop most often remains a bit "misplaced" outside the pawn chain.The reason i call it misplaced,on d7,seemingly dead inside the pawn chain,the bishop is the mighty force supporting the key e6 point after pawnbreaks like f6 which very often along with c5 is the key to black's counterplay.When the bishop on g6 or h7 looks good,it maynot be.Dvoretsky helped, "Bad bishop defends good pawns at times".Last 3 years with chess,further understanding,its such a democratic game,carokan and french both are strong weapons in the hands of a mighty chess warrior.Its the understanding that matters.Nuances,thats what chess is all about. HOPE I HAVE GIVEN YOU SOMETHING FOR THE THIRD CHAPTER.
Jun-16-11  hedgeh0g: Again, I think there was only one candidate move today ;)
Jun-16-11
Premium Chessgames Member
  agb2002: From a French Defense, I suspect.

White has the bishop pair for a bishop and a knight.

Black is probably considering ... e5 and ... e4.

After the bishop sacrifice on h7, the pawn on g5 can move to g6 to cover f7 and the DSB can go to h4 (or even to c5 if the knight moves) to cover e7, preventing the black king from escaping to the queen side. Therefore, 21.Bxh7+:

A) 21... Kxh7 22.Qh5+ Kg8 23.g6

A.1) 23... Nf5 24.Bc5 Nd6 (24... Ne7 25.Qh7+ Kf8 26.Qh8#) 25.Rf1 Qf7 26.Qh7+ Kf8 27.Bxd6+ Re7 28.Qh8#.

A.2) 23... Nf7 24.Qh7+ Kf8 25.Bc5+ Re7 (25... Nd6 26.Rf1) 26.Rf1 Ke8 27.Qg8#.

A.3) 23... Kf8 24.Bh4 Nf7 25.gxf7+ Qxf7 26.Qh8+ Qg8 27.Rf1#.

A.4) 23... Qd8 24.Bh4 Qxh4 (24... Nf7 25.Qh7+ Kf8 26.Rf1) 25.Qxh4 Nf5 26.Qh7+ Kf8 27.Rf1 + -.

B) 21... Kh8 22.Qh5 with multiple threats (Bg6+, Rf1, etc.).

C) 21... Kf8 22.Bc5 again with attack.

D) 21... Kf7 22.g6+

D.1) 22... Ke7 23.Bh4+ Kf8 24.Rf1+ Nf5 25.g4 + -.

D.2) 22... Kf8 23.Rf1+ Nf5 (23... Ke7 24.Bh4#) 24.g4 + -.

Jun-16-11  sevenseaman: <Helloween> General question? Its a very personal question; equivalent to asking a lady her age or a man his wage. You are unlikely to get truthful or accurate answers; a twist that'll distort the inferences, if you are drawing any.

It took me a while to realise that using the board/interface was a form of cheating (even if mild). I put away my woodies out to mildew about 3 months ago.

Having cottoned on to how it really needed to be, now I do it by staring at the position like one would do in a live game.

Rarely can I work out the entire combination. An intuitive flash of 4 or 5 moves and then print it out ( at times there is a flow and it can go to 14-15 moves even). If it goes wrong it goes wrong.

If I have been outright stupid, I do feel bad and express my disappointment in so many thinly couched words and bore the hell out of my classmates. Some of them are kind enough to even empathize but I generally know where I stand.

No problem if reality hits me hard; there is no prize other than learning. I disdain giving myself any airs (except when I am in the company of real life ladies).

My failures end up being better teachers, invariably. There, I am in consonance with <CG>.

(I work on a notepad window by the side of <CG> home page and set up my post until I am ready to open the game page).

Jun-16-11  zb2cr: Similar to yesterday's, but I found it much easier--not as many messy side-variations.
Jun-16-11  Ratt Boy: A chess writer from generations ago once wrote something along the lines of "You're not a chess player until you've sacrificed a Bishop on h7."

I agree with others who've said that this was easier than yesterday's puzzle.

Jun-16-11  David2009: Glek vs D Bunzmann, 2007 White 21?

Echoes of yesterday with Bxh7+ being the natural forcing move and ...Nf5 a strong defensive resource. Let's analyse: 21.Bxh7+ Kxh7 22. Qh5+ Kg8 23. g6 Nf5?! 24. Qh7+ Kf8 25. Bc5+ looks very promising, so Black must find something else. How about 23...d4 24.Bxd4 Qc6 25. Qh7+ Kf8 26.Qxg7# so this doesn't wok either. 23...e4 or 23...Kf8 both run into 24 Bh4 shutting the door, with Rf1 in reserve. Looks encouraging so we'll play 21.Bxh7+ as a positional sacrifice/GOOT. Time to check:
=====
Seems OK.


click for larger view

Crafty End Game Trainer link to the puzzle position above: http://www.chessvideos.tv/endgame-t... The EGT declines the sacrifice with 21...Kf8. Setting up the position with the sacrifice accepted, the EGT gives up the Queen to delay mate. Second link: http://www.chessvideos.tv/endgame-t... Conclusion: unlike yesterday accepting the sacrifice gives a clear-cut loss.

Enjoyable and instructive kibitzes from the regulars: as an aside <sevenseaman: <Helloween> General question? Its a very personal question; equivalent to asking a lady her age or a man his wage.> Like it!!

Jun-16-11  k.khalil: Similar theme to yesterday's puzzle, Bxh7+. Although, I didn't see 23...e5 in my calculation. Today's puzzle is relatively easy. Crazy opening.
Jun-16-11  CHESSTTCAMPS: White has the advantage of the bishop pair in a position where both bishops have excellent scope, whereas black's boxed-in LSB is ineffective offensively and defensively. The g5-pawn is in position to coordinate with the queen in a kingside attack, suggesting our old friend the Bh7 sac:

21.Bh7+! Kxh7

Anything else is answered by 22.Qh5 winning quickly.

22.Qh5+ Kg8 23.g6 and now black is defenseless:

A) 23... Nf5 24.Qh7+ Kf8 25.Bc5+ Nd6 (N/R/Qe7 26.Qh8#) 26.Rf1+ Ke7 27.Qh4#

A.1) 25... Qd6 26.Bxd6+ Nxd6 27.Qh4 Nf5 28.Rf1 followed by 29.Rae1 and 30.Rxf5+ forces mate

B) 23... Nf7 24.Qh7+ Kf8 25.Bc5+ Re7 (Nd6 transposes to A) 26.Rf1 Ke8 (otherwise 27.Qh8#) 27.Qg8#

C) 23... Qe7 24.Qh7+ and 25.Qh8#

D) 23... Qd8 24.Qh7+ Kf8 25.Qh8+ Ke7 26.Qxg7+ Nf7 27.Bh4+ wins Queen and knight.

E) 23... Other 24.Bh4 forces mate-in-3.

Time for review...

Jun-16-11  CHESSTTCAMPS: Overlooked the specific game defense, but the continuation is obvious and similar to other lines presented.
Jun-16-11  Ghuzultyy: <21.Bxh7+!>
Wins the game.


click for larger view

A)21...Kxh7? 22.Qh5+ Kg8 23.g6 Nf5 24.Qh7+ Kf8 25.Bc5+ 1-0

B)21...Kh8? 22.Qh5 Nf7 23.Bg6+ Kg8 24.Qh7+ Kf8 25.Bc5+ Nd6 26.Rf1+ Ke7 27.Rf7+ 1-0

C)21...Kf7 22.g6+ Ke7 23.Bh4+! Kf8 24.Bg8! Nf5 25.Qh5 Nh6 26.Bf7! Re7 27.Bxe7+ Qxe7 28.Rxe6

D)21...Kf8! 22.g6 Re7 23.Bh4 Nf5 24.Qf3 Ke8 25.Bxe7 Qxe7

Jun-16-11  Ghuzultyy: Against Crafty:

21.Bxh7+ Kf8! 22.g6 Qc7!? 23.Bh4 Qc5+ 24.Kh1 Nf5 25.Qf3 Qd6 26.Rf1 Qd7 27.Qh5 Re7 28.Bg8! Ke8 29.Rxf5! exf5 30.Bf7+ Kd8 31.Re1 d4 32.Rxe7 Qxe7 33.Bxe7 Kxe7


click for larger view

Jun-16-11  Patriot: Fun puzzle. I didn't consider the 23...e5 defense, but looked at 23...Kf8, 23...Ne4, 23...Nf5, and 23...Nf7.

For example,

A) 23...Kf8 24.Qh8+ Ke7 25.Bh4#

B) 23...Ne4 24.Qh7+ Kf8 25.Bc5+

B.1) 25...Nxc5 26.Rf1+ Ke7 27.Qh4#

B.2) 25...Nd6 26.Rf1+ Ke7 27.Qh4#

B.3) 25...Re7/Qe7 26.Qh8#

C) 23...Nf5 24.Qh7+ Kf8 25.Bc5+ Nd6 26.Rf1+ Ke7 27.Qh4#

D) 23...Nf7 24.Qh7+ Kf8 25.Bc5+

D.1) 25...Nd6 26.Rf1+ Ke7 27.Qh4#

D.2) 25...Re7 26.Rf1 is crushing.

There are some lines where the queen "could" interpose, but it's kind of silly to continue calculating an obviously losing line like a computer unless you just want practice in visualization.

Jun-16-11  castledweller: I think the reason that this was easy for alot of players today is because of repetition - because we see this attacking theme so often . . .

the B-sacrifice theme, especially along the a2-h7 diagonal, followed by the Q-h file check move.

Reminds me of boxing with the right jab, left hook. After that one-two punch of B-sac at h7 followed by Qh5+, black was on the ropes.

Jun-16-11
Premium Chessgames Member
  kevin86: White threatens Qh8# and black has NO escape.
Jun-16-11
Premium Chessgames Member
  beenthere240: The tension is growing. Who among us doesn't sense a spoiler in the air?
Jun-16-11  gofer: <21 Bxh7+ ...>

Option 1: Accept

21 ... Kxh7+ 22 Qh5+ Kg8 23 g6 Nf5 24 Qh7+ Kf8 25 Bc5+ Nd6 26 Rf1+! Ke7 27 Rf7+ Kd8 28 Rxd7+ Kxd7 29 Qxg7+ ...

29 ... Kc8 31 Bxd6 mating
29 ... Kc6 30 Bxd6 Kxd6 31 Qxb7 winning
29 ... Kd8 30 Bxd6 Rc8 31 Qxb7 winning

29 ... Re7 30 Qe5 Ne8 31 Bxe7 Kxe7 32 Re1 Bc8 33 Qxd5 Rb8 34 Qg5+ ... winning easily

Option 2: Hide in the corner

21 ... Kh8
22 Qg5 ...

22 ... Rec8 23 Bc2+ Kg8 24 g6 winning as 25 Bh4 is coming next 22 ... Nf5 23 Bxf5+ Kg8 24 Bh7+ moving to one of the other variations but without the knight! 22 ... Ne4 23 Bxe4+ Kg8 24 Bh7+ moving to one of the other variations but without the knight! 22 ... Nf7 23 Bg6+ Kg8 24 Bxf7+ Qxf7 25 g6 Qf5 26 Qh7+ Kf7 27 Bh4 mating 22 ... g6 23 Bd4+ e5 24 Bxg6 Kg8 25 Rxe5 Rxe5 26 Bxe5 Kf8 27 Rf1+ Ke7 28 Bf6+ Kd6 29 Qg4+ Nf5 30 Bxf5+ winning easily

Given the above, black should probably play...

Option 3: Hide in the open!

<21 ... Kf8>

Now this is the interesting bit white could play 22 Bg6 Ke7 23 Bxe8 Rxe8 and win a pawn and the exchange and can probably pick up Pg7 or Pa7 quite quickly, but is this a "win"? How about gaining control of the all important e7 and d8 squares cutting off the king's escape??? Okay, Bh7 gets stranded but is this okay???? 22 g6!? Nf5 23 g4!? Nh6 24 Bh4 Re7!? 25 Rf1+

<22 Bg6 Ke7>
<23 Bxe8 Rxe8>
<24 Qd4 ...>

Time to check!

Jun-16-11  scormus: Oh no, not the Greek Gift AGAIN!

I wondered if 21 g6 might have been the move, after all, theres no WN on f3 today. But the usual B-sac seems to work (at least it does today).

21 Bxh7+ Kxh7 22 Qh5+ 23 Kg8 23 g6 and the BK will soon run out of places to run. At first I thought B could fight on with 23 ... Nf5 as the BN prevents Bh4. But there Bc5+ instead which several people already saw means 1-0.

Jun-16-11  LIFE Master AJ: Its raining Bishops!

Black dared White to sack on h7. (Bad idea, Glek is a very strong GM.)

I do think 24.Bh4 is superior to 24.Bc5+. (Although I hasted to point out, I have not done any computer work again.)

Jun-16-11  LIFE Master AJ: I was right, 24.♗h4! was much superior to Bc5+. (The idea is to cut the BK's escape square off ... completely, 24.Bc5+ might allow Black to interpose on d6.)
Jun-16-11  LIFE Master AJ: Chilton,James I - Gavriel,Tryfon (2170) [C00]
London Classic op London (1), 08.12.2010

1.e4 e6 2.f4 d5 3.e5 Nh6 4.d4 c5 5.dxc5 Bxc5 6.Bb5+ Nc6 7.Qe2 0-0 8.c3 f6 9.Be3 Bxe3 10.Qxe3 fxe5 11.fxe5 Ng4 12.Qg3 Nf2 13.Nf3 Nxh1 14.Qh3 Nf2 0-1

Jun-16-11  LIFE Master AJ: Not a ton of games in the DB after Black's fouth move, above is just one example.
Jun-16-11
Premium Chessgames Member
  patzer2: For today's Thursday solution the demolition sham sacrifice 21. Bxh7+! yields a decisive attack against the weakened castled position.

If 21...Kf8, then 22. Bg6 wins when play might continue 22...Rec8 23. Bg3! Ke7 24. Qd4 Rg8 25. Qc5 Qc6 26. Bxd6+ Qxd6 (diagram below)


click for larger view

27. Rxe6+! Kxe6 28. Re1+ Kd7 29. Bf5+ .

If 23...Nf5, then 24. Qh7+ Kf8 25. Bc5+! wins as play might continue 25...Nd6 (diagram below) when it's mate-in-two after


click for larger view

26. Rf1+ Ke7 27. Qh4#.

Jun-16-11  VincentL: "Medium"

The "main line" is obviously 21. Bxh7+ Kxh7 22. Qh5+ Kg8 23. g6, followed by 24. Qh7+ Kf8 25. Qh8+ Ke7 26. Bh4 mate.

As yesterday, the difficulty of the puzzle lies in finding the optimum lines against the various defences.

Black can play 23.....Ne4. White then responds 24. Rxe4 and whether black plays dxe4 or not the above mating line cannot be stopped.

However 26.....Nf5 appears to offer tougher reoslve. After 24. Bc5+ Nd6 25. Qh8+ Ke7 26. Qxg7+ Kd8 the king is escaping. If 24. g4 Kf8 and black gains a tempi enabling escape.

Black can also decline the bishop sacrifice, and play 21. Kf8. Although white is clearly better and a pawn up, I see nothing immediately decisive.

No time for more. Letīs check the game and other kibitzes.

Jun-16-11  VincentL: <Phony Benoni> gives the line against 23....Nf5.

Should have seen this...d?&!?n.

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