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Bosko Abramovic vs Branko Damljanovic
Novi Sad (1995)
King's Indian Defense: Fianchetto Variation. Classical Fianchetto (E67)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 1 OF 2 ·  Later Kibitzing>
Aug-01-08  dzechiel: White to play (36?). Material even. "Difficult."

Boy, this one sure seems familiar. Right away I want to play

36 Rxf6

The threat is 37 Qg5+. Black has several tries here:

- 36...Rxf6
- 36...h6
- 36...Kh8

None of this looks good for black. For instance

36...Rxf6 37 Qg5+ Rg6 38 fxg6

and black can't recapture with

38...hxg6

because of

39 Re7+

picking up the queen. Or...

36...Kh8 37 Rxf7 Qxf7 38 f6 (threat 39 Re7) 38...Re8 39 Rxe8+ Qxe8 40 f7 Qf8 41 Qf6+ Qg7 42 f8=Q#.

I'm sure other lines are equally bad for black. This must be the move.

Time to check.

Aug-01-08  dzechiel: If you live in southern California and would like to participate in a five-minute chess tournament on the evening of August 30th, please check my profile for details.
Aug-01-08  AccDrag: At first I wanted to playing Kg2 and play Rh1, but the h-file "attack" is a non-starter. Then I noticed 36.Rxf6 Kxf6 37.Qh6+ had to be a mating net.

when I spotted 36...Rxf6 37.Qg5+ Kf7 38.Re6! I figured I was done.

I admit I did not calculate as far as the game continuation went. I have a bad habit of ending my calculations for these sorts of puzzles once I am convinced I have found the key move. In a real game, you have to be very careful when doing such things!

Aug-01-08
Premium Chessgames Member
  al wazir: <dzechiel>: Where's the win after 36. Rxf6 Re8 ? Granted, white is up a ♙, but there are other ways to get that, e.g., 36. Qg5+, followed by Re2, Rh2, and Qh5.
Aug-01-08  lost in space: Tricky one today.

36. Rxf6 Rxf6

after 36..Kh8 Re6 White simply wins due to his material and positional advantage

37. Qg5+ Kf7 38. Re6

A: 39. Rxe6 fxe6+ and the Queen is gone
B: 39. Rxf5 Qxf5 Kg7 40. Qg5+ Kh8 41. Re7 and the Queen is gone.

Time to check

Aug-01-08  RandomVisitor: 33...hxg3=.
Aug-01-08  dzechiel: <al wazir: <dzechiel>: Where's the win after 36. Rxf6 Re8?>

It looks like 37 Rfe6 does the trick. If black tries 37...Ree7 then 38 f6+ is a killer.

I'm sure there are many other lines, and also I'm sure one of our chess engine savvy users will publish them.

Aug-01-08
Premium Chessgames Member
  Jimfromprovidence: The best line for both sides I've found was 36 Rxf6 Rxf6 37 Qg5 Rg6 38 fxg6 Re8 (which prevents the rook skewer on e7) 39 gxh7+ Kh8, picking up a couple of pawns for white.


click for larger view

Aug-01-08
Premium Chessgames Member
  al wazir: <dzechiel: 36. Rxf6 Re8 37. Rfe6> Ref8 38. f6+ Kh8 39. Rxd6 Qa4 40. Qf2 Qa3 41. g4 Qc3.

White is two ♙s up, but it looks as if one of them is going to slip away. In any case, this continuation is not as forceful or convincing as the line played in the game.

Aug-01-08  DarthStapler: I didn't get it
Aug-01-08  zooter: 3 options:

1) Rxd6
2) Rxf6
3) Re7 somehow after moving the rook on f7 away

I'm gonna go with Rxf6 though I'm unsure about the followup after

36.Rxf6 Kxf6 37.Qg5+ Kf7 ... Maybe 38.Qh5+ followed by 39.g4?

Time to check as this is definitely difficult and I have to rush

Aug-01-08  zooter: Ha, missed 38.Re6 the killer move as the rook is immune because of a pawn fork of the king and queen (a royal fork?)

pretty tough week so far

Aug-01-08  dragonfish1803: For a while I thought 38....,Qe7 was a viable defence for black leading to a Qv2R ending until I noticed 39.Rxe7,Kxe7;40.Qg7+,Rf7;41.f6+,Ke8; 42.Qg8+,Rf8;43.Qe6# ( is this what's known as an epaulette mate ? )
Aug-01-08
Premium Chessgames Member
  Once: <zooter> My thinking was much like yours - I stopped analysing just before 38. Re6. Not helped by the fact that I rushed this one on the way to work.

The interesting thing for me is that I would spot 38. Re6 if you showed me the position after 37. ... Kf7, but I didn't see it as the third move in a combination. So I either need to work on those visualisation skills or stop trying to solve Friday problems over breakfast ...

Aug-01-08  Ardashir: Jimfromprovidence: I think your line will be even better for white if you insert 38. Re7+ before playing fxg6.
Aug-01-08
Premium Chessgames Member
  whiteshark: Pity, I didn't understand the basics of the position. 36.R1e2 with intention of g4-g5 was my rough plan.
Aug-01-08  AccDrag: dragon: yes, that would be a classic epaulette mate :-)
Aug-01-08  gandu: <al wazir>
after 36. Rxf6 Re8 37. Rfe6 Ref8 38. f6+ Kh8 White can better play 39. Re7

after that Black's best move is dropping the queen. If for instance 39...Qd8, then White can play 40. Qh6 and Black is toasted!

Aug-01-08
Premium Chessgames Member
  luzhin: Black's weakness on e6 seems to be the key to this position. For example if after 36.Rxf6 Black plays Kxf6 then 37.Qh6+ Kxf5 38.Re6! is the killer.
Aug-01-08  stacase: Skunked all week long, and today 36 Rxf6 was an obvious first choice.
Aug-01-08
Premium Chessgames Member
  johnlspouge: Friday (Difficult): White to play and win.
Material: Even. White has superiority in space and control of the e-file with a battery Re1 and Re6. The White Qf5 can penetrate the Black K-side.

Candidates (36.): Rxf6

36.Rxf6 (threatening 37.Qg5+ 38.R1e6)

Black has 2 choices to recapture, to avoid outright loss of a P in an inferior position:

(1) 36Kxf6 37.Qh6+ Kxf5 38.Re6 (threatening 39.Qf4#)

A few times in the following, a winning Q vs. R endgame could result from the Q capture

(1.1) 39Qxe6 40.Qxe6+ Kg5 41.Qxf7

Thus,

(1.2) 39Kg4 40.Kg2 (threatening 40.Qh4+ Kf5 41.Qf4#)

40Rf2+ 41.Kxf2 Qf7+ 42.Rf6

and Black is finished.

(2) 36Rxf6 37.Qg5+

Black has 2 options to avoid the loss resulting from abandoning Rf6:

(2.1) 37Rg6 38.fxg6 (threatening 39.Re7+ and 39.gxh7+)

38Re8 [Kf8 39.gxh7] 39.gxh7+ Kxh7 40.Qh5+ (forking Re8).

(2.2) 37Kf7 38.Re6 (threatening 39.Rxf6+ and mate soon)

38Qxe6 [Rxe6 39.fxe6+ forks Qd7) 39.exf6+ Ke7 40.Qg7+

wins Rf6.

Aug-01-08  JohnBoy: The real issue is the line found by <Jimfromprovidence> above. In the final, posted position white cannot hold both pawns. If the rooks come off, the resulting Q+P ending is probably won, but likely with much effort. I'd like to see the results of an engine's analysis of that final, posted, position.
Aug-01-08  sexymichelle7: I solved today`s chess puzzle in 2minutes-not bad for a Beverly Hills blonde:)
Aug-01-08  456: Thursday puzzle Jul-31-08 <31. ?< Ivanchuk vs Anand, 1994
Aug-01-08
Premium Chessgames Member
  johnlspouge: <<JohnBoy> wrote: The real issue is the line found by <Jimfromprovidence> above. [snip]>

White does not need to hold both Ps to win. The simplest win from the diagram <Jimfromprovidence> gives is

40.Rxe8+ Qxe8 41.Qg8+ Qxg8 42.hxg8=Q+ Kxg8


click for larger view

going into a straightforward K+P endgame win for White. White shepherds Pg3 with Kg1 to achieve the following position with White to move:


click for larger view

and then mops up the base of the opposing P chain with the K.

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