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Zvulon Gofshtein vs Adam G Ashton
Hastings (2006/07), Hastings ENG, rd 8, Dec-04
Queen's Gambit Declined: Albin Countergambit (D08)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
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Aug-11-10  desiobu: I found 24. f6 but faltered a bit in the main line:

24...gxf6/Bxf6 25. Bf5+ Kc7

here I should have chosen the winning 26. Qb7+ Kd6 27. Ne4# but I went with 26. b6 Kd6 27. Nxb7+ thinking it was mate; 27...Qxb7 was a blind spot in my mental image.

Aug-11-10
Premium Chessgames Member
  patzer2: Novice players might be interested in learning some elementary mates and deflection tactics from the possible variations in this puzzle, before going back to the beginning of the puzzle position (i.e. 24. ?, White to move):

1. White to move, mate-in-one, after 24. f6! Bxf6 25. Bf5+ Nd7??


click for larger view

Solution: 25. Qxb7#

2. White to move, mate-in-two, after 24. f6! Bxf6 25. Bf5+ Rd7??


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Solution: 25. Qxb7+ Kd8 26. Qxb8#

3. White-to-move, mate-in-two, after 24. f6! Bxf6 25. Bf5+ Kc7


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Solution: 26. b6+ Kd6 27. Ne4# or 26. Qxb7+ Kd6 27. Ne4#.

4. Find White's strongest move in the final position (after 24...Qc7). Hint: It's a simple deflection to either mate or force the win of the Queen.


click for larger view

Solution: 25. b6!

P.S.: Breaking down combinations like this into simple elements is a great way for teaching tactics and combination play to novices. Once they can quickly visualize these simple tactics, then they can progress to the initial puzzle position (24. ?, white to move).

I coached my two daughters to state elementary, middle school and high school state championships using this approach as my key teaching technique (i.e. breaking down combinations into simple elements, and then building upon them to visualize deeper combinations).

Aug-11-10  mworld: I was part of the Bxg5 before f6 crowd. Their was this line in the f6 first line that gave me some problems, although its obviously a win of material:

24. F6 Qc7 25. Bf5+ Rd7 26. Bd7+ <Nxd7>

Aug-11-10  mworld: and of course I totally messed up not realizing blacks rook on rd7 now blocks b7's protector.. DUH!
Aug-11-10
Premium Chessgames Member
  wordfunph: how 'bout 24.Bxg5?
Aug-11-10  scormus: Is this a smother # coming up? 24 Bxg5 hxg5 25 f6 gxf (I guess) 26 Bf5+ Rd7 27 Qxb7+ Kd8 28 Qxb8#

Other moves for B are no better, and most of them end up with the BK escape blocked by his own pieces.

Better check ....

Aug-11-10  scormus: 24 f6 then. OK, maybe Bxg5 is just redundant
Aug-11-10  turbo231: missed it i wish i could put two and two together
Aug-11-10  David2009: Z Gofshtein vs A Ashton, 2006 White 24?

24 f6 Qc7 25 Bf5+ Nd7 26 Nxd7 Rxd7 27 Qa8+ Qb8 28 Qxb8+ Kxb8 29 Bxd7 and White emerges a Rook ahead. If instead 24...gxf6 25 Bf5+ Kc7 26 Qxc7+ Kd6 Ne4#. Or finally 24...Bxf6 25 Bf5+ Rd7 26 Qxb7+ Kd8 27 Qxb8#. Time to check:
====
Yes. In this version of the Albin counter-gambit White gets a strong attack in exchange for the sacrifice of a Black pawn.

Aug-11-10  elohah: 'What is the unusual 4...Ne7!?, Alex?

"Is that your FINAL answer?"

'Yeah, I think so, man. Because it's obvious that in the game, Black needed a knight on c5, so he could threaten ...a4! at some point.'

'So what we'll try to do is place the kingside knight on c6, and the queenside knight on a6!' 4...Ne7! looks to be the only way to answer the immediate attack on the d-pawn with 5 Nf3 by 5...Nec6!, later ...a5 and ...Na6! with the knights placed properly.'

"And 5 Bg5 ?"

'Yeah, we'll prob. have to go 5...h6 6 Bh4 and then 6...g5 on that, unLESS maybe the weird, but possibly not bad unpinning 5...Qd7 or 6...Qd7 (and then ...Nec6)'

"Black got creamed in the game because his pieces were misplaced. His knights were stepping on each other's toes.'

Aug-11-10  hedgeh0g: Got 24.f6. Not hard to spot when you realise the lethality of a check on the h3-c8 diagonal.

24.Bxg5 wins too, of course, but it's slightly inferior since it's essentially the f6-variation delayed by one move.

Aug-11-10  kramputz: < elohah: 'What is the unusual 4...Ne7!?, Alex? "Is that your FINAL answer?"

'Yeah, I think so, man. > ....Please don't forget to take your medication.

Aug-11-10
Premium Chessgames Member
  Jimfromprovidence: My only comment is about black not playing 18...a4 before castling.


click for larger view

The castling move allowed 19 b4, opening up that side of the board for white.

Aug-11-10  cjgone: Ah I played Bxg5 then f6 to remove the bishop protecting the queen... Grr.. but the pawn already blocks off the guard..
Aug-11-10  cjgone: Rybka tells me that Bxg5 is a better move though..

5.81 for Bxg5 (continued by f6 if he doesn't drop the queen) and 5.31 for f6

Aug-11-10  ZUGZWANG67: Black is a pawn up and has more space in the center. White has more room on both wings and has an attack against the BK. Of particular interest are his pressure on b7 and the advance f6 followed by check at f5. One notes that the BQ is much needed near b7. Once one has considered these, it remains to put that all together.

1.f6 and:

a) 1...Qc7!? 2.b6! Qxb6 (2...Qd6 3.Qxb7+ mate) 3.Qxb6;

b) 1...gxf6 (or 1...Bxf6) 2.Bf5+ and now: b1) 2...Qd7 2.Qb7+ mate!! It's not often that one is offered a Q and refuse the gift!; b2) 2...Kc7 3.Qxb7+ Kd6 4.Ne4+ is mate (and a cool one with that); b3) 2...Nd7 3.Qxb7+ mate; or b4) 2...Rd7 3.Qxb7+ (I like pinning) 3...Kd8 4.Qxb7+ is mate as well!

Hopefully I have not missed anything. If I had to play this OTB I would probably stop analysing after 2...Qd7 (b1) or after 2...Qxb6 (a): that is because time counts!. Once the opponent puts his Q "en prise" in 99% of the cases it's must be a win.

Ok, ok. Let's say that yesterday we had a case belonging to the 1%...

:0)

Time to check!

----------

Peace!

Aug-11-10  ZUGZWANG67: Sorry the the slight lack of rigour showed in my previous post. Here's what that is:

24.f6 and:

a) 24...Qc7!? 25.b6! Qxb6 (25...Qd6 26.Qxb7+ mate) 26.Qxb6;

b) 24...gxf6 (or 24...Bxf6) 25.Bf5+ and now: b1) 25...Qd7 26.Qb7+ mate!! It's not often that one is offered a Q and refuse the gift!; b2) 25...Kc7 26.Qxb7+ Kd6 27.Ne4+ is mate (and a cool one with that); b3) 25...Nd7 26.Qxb7+ mate; or b4) 25...Rd7 26.Qxb7+ (I like pinning) 26...Kd8 27.Qxb7+ is mate as well!

Voilą.

Aug-11-10  DarthStapler: I didn't get it
Aug-11-10  wals: Black a pawn up, played 22...Bg5, a costly blunder. +5.52.

Alternatives:-

Analysis by Rybka 3 1-cpu:

1. (1.33): 22...c6 23.a4 Rd7 24.Nc5 Bf6 25.a5 Qd6

2. (1.98): 22...b6 23.c5[] Bd5 24.c6[] Nxc6 25.bxc6 Bxc6 26.Rb1 Kd7 27.Bb5[] Bxb5 28.Rxb5 Ke8 29.Bd2 c6 30.Qxe7+ Bxe7 31.Rxb6 Rc8 32.a4 h5 33.g5 Kd7 34.f6 gxf6 35.gxf6 Bd6 36.Rc1 Ba3

3. (2.00): 22...Bf6 23.Nc5[] c6[] 24.Rb1[] Qc7 25.bxc6[] b6 26.Qxb6[]

4. (2.58): 22...Rhe8 23.Nc5[] Qxc5 24.Qxc5 b6 25.Qb4[] e4 26.c5[] Be7 27.Bc4[] Bxc5 28.Bxf7 Bxb4 29.axb4 e3 30.Bxe8 Rxe8 31.Kg2 Nd7 32.Ra8+ Nb8[] 33.Re1 Rd8 34.Kf3 Kb7 35.Ra1 c5[] 36.bxc5

5. (2.60): 22...c5 23.Nxc5 b6 24.Qxb6 Qc7

Was his intent to open up the h file?
(BxB, pxB, Nxp, QxN)

23...c6,was another blunder.+12.06. To prevent # obviously. Qxc5 would have been better, but not
enough to rectify the deficit. White is in front on all moves.

1. (5.87): 23...Qxc5 24.Qxc5[]
2. (7.81): 23...Be3+ 24.Bxe3
3. (9.76): 23...Bd5 24.cxd5
4. (12.06): 23...c6 24.Bxg5
5. (#3): 23...Rd5 24.Qxb7+

White's move 24.f6 +10.20 versus the possible Bxg5 +11.69 is more than adequate especially since Black's
24...Qc7 +24.61 is the final straw.

Aug-11-10
Premium Chessgames Member
  Domdaniel: 24.f6 is thematic, lethal, and pretty obvious. I like the way Black plays 24...Qc7 -- trying to keep the Queen near the b-pawn to protect it after the LCB check -- then resigns at once on seeing that it loses to 25.b6. Time may have been a factor.

I'd begun to look at the idea of fxg7 followed by Rxf7 to deflect the queen, which should also win. Then I saw the simple path.

Aug-11-10  aazqua: Pretty obvious but I guess that's Wednesday. Even if the queen had a more convenient square bf5 followed by b6 and ne4 covers every square.
Aug-11-10
Premium Chessgames Member
  Phony Benoni: I probably preferred <24.f6> out of laziness. I'd rather calculate a three-move combination than a four-move one. This might be a case where the computer preference for 24.Bxg5 is misleading for human play. It's probably based on (1) the irrelevant positional consideration that Black's pawns are weakened; (2) Black can't stop the real winning move, f6.

For humans, 24.Bxg5 just introduces some unnecessary complexity. Of course, the move is forcing enough that the extra difficulty is minimal, but it still exists and there is no practical reason to accept it.

Still, anyone who spotted the f6 winner should take credit, no matter if they played Bxg5 first or not. I have spoken.

Aug-12-10  culei: <Complaint> why play bxg5 if after f6 anything is checkmate And who cares that rybka says its good , it loses a precious time maybe he can defend something Even though he can't why risk???
Aug-12-10
Premium Chessgames Member
  Once: <Phony Benoni: ...For humans, 24.Bxg5 just introduces some unnecessary complexity.>

I'm not too sure about that. 24. Bxg5 eliminates 24...Bxf6 as a black defence to 24. f6, So while it adds to the complexity because it is longer than 24. f6, it also reduces the complexity because there are fewer lines to consider.

24. Bxg5 is also pretty forcing as it hits the black queen.

I'd say the two moves are about equal. I went for 24 f6 but can see no reason not to chuck in Bxg5 first.

Aug-13-10
Premium Chessgames Member
  kevin86: All white needed to do was open f5 for the bishop-now he wins material big time.
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