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Dusan Rajkovic vs Branko Damljanovic
YUG-chT (1991), Cetinje MNE, rd 1, Sep-??
King's Indian Defense: Accelerated Averbakh Variation (E70)  ·  1/2-1/2



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Kibitzer's Corner
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Apr-10-10  Skylark: <atakantmac> today is the first day this week that the result has been a draw. Over the last two days the point was that we had to find the move that should have been played but wasn't over the board. The game move isn't always the correct one.

In any case I got the idea but didn't realise white was playing for a draw. I found g4 and figured there wasn't really any other way for white to survive after staring at the position for 15 ish minutes..most of that was spent finding Rh4+. The limited number of options for either side regarding subsequent play made this puzzle easier than it could have been from a rather odd initial position.

Premium Chessgames Member
  wordfunph: got it 45.g4! though i analyzed Bg2 looking for some spectacular moves by Rajkovic.
Apr-10-10  JohnBoy: <Random: 28...R8a3 and 31...Nxc3+ 32.Kc1 Rxa1+ were strong moves for black that might have ended the game a lot sooner.> I'm not so sure. At least in the second case, 31...Nxc3+ 32.Ke1 Rxa1+ 33.Kf2 and white will probably pick up the advanced f pawn. Can black hold it then? Maybe, but it's not so clear.
Apr-10-10  sethoflagos: White appears to have two choices.

The first is for white king to wander queenside in an attempt to get to d6. Unfortunately, the Pc5 blocks b4 forcing the WK to the a file where it can be penned in by Rb1. Black can now promote one of his central pawns.

So it has to be

45. g4 hxg4
46. h5 g3
47. h6 Rxf1 (47. ... g2 48. Rh4+ Ke5 49. Bxg2 f1=Q 50. Bxf1 Rxf1 51. h7 Rf8 52. h8=Q Rxh8 53. Rxh8)

48. Rh4+ Ke5
49. h7 Rd1+ (eg. 49. ... Ra1 50. h8=Q+ Kf5 51. Qf8+ Ke5 52. Rh5+ Ke6 53. Qf5+ Ke7 54. Rh7+ Ke8 55. Qc8# and many variations on this)

So black is forced to find perpetual check. If 50. Kxd1 g1=Q+ and again perpetual check.

King cannot escape via a-file (permitting Ra8 followed by f1=Q) or f file (permitting f1=Q+) hence must accept draw.

Apr-10-10  lippizan: What else other than 43. g4. But from this point, the next moves must be precise.
Apr-10-10  fouard: Well with White all bottled up, the first (and possibly the only move with any hope) worth looking at is 45 g4. I really don't see anything better for Black than 45...hxg4. 46 h5 g3 47 h6 and even if both sides Queen, White should get their first, and Black should get mated in the center of the board.
Apr-10-10  sethoflagos: <<RandomVisitor>: 28...R8a3 and 31...Nxc3+ 32.Kc1 Rxa1+ were strong moves for black that might have ended the game a lot sooner.>

Black has also failed to notice that the white king has zugzwanged itself with 41. Kd3??

click for larger view


41. ... Ke5!
42. Kd2 Kd4
43. Kc2 Ke3
44. Kb3 d5!

and now g4 is a tempo too slow.

Apr-10-10  fouard: I agree with Tarek. White should have played on, and run the King toward the a-file. Black has already acknowledged that he can't simply Queen, as White then Queens with check, and should certainly win. If black keeps checking, the King eventually gets to c6, where the only Rook check will be b6. The King captures, and so what if Black Queens now?
Apr-10-10  fouard: Now after reading Abuzic's post, I conclude that I am wrong (first time today, though!) - the threat of 52...Rb8 forces white to take the draw by perpet.
Apr-10-10  SuperPatzer77: <tarek1> 49. h7 Re1+!, 50. Kd2 Rd1+, 51. Kc2 Rc1+, 52. Kb2?? Rb1+, 53. Kc2 Rb8!, 54. h8=Q Rxh8, 55. Rxh8 f1=Q

That's why the White King shouldn't move to b2.

<tarek1> After 51...Rc1+, 52. Kd2! then it is a draw by perpetual check.


Premium Chessgames Member
  johnlspouge: Saturday (Very Difficult)

D Rajkovic vs Damljanovic, 1991 (45.?)

White to play and win.

Material: B for P. The Black Kd4 has 1 legal move. The tactics focus on the advanced Black Pf2. The Black Re1 pins Bf1 to Rh1, constraining Rh1, which is already in a box. To free his pieces, White must create a tactical imbalance. Black loses if he releases the pin on Bf1 (as shown below). In particular, the Black Kd4 must avoid light squares, which permit Bf1 to release the pin with a check and discovered attack by Rh1 on Re1.

Candidates (45.): g4


(1) Black can accept the sacrifice:

45…hxg4 46.h5 g3

[Rd8 h6 47.Rh8 Ke7 wins Pf2 and Pg4, and then the game]

47.h6 <g2> [Rd8 48.Rh4+ Ke5 49.Ke7, as above]

<[Here, I missed the drawing defense 47.Rxf1.]>

48.Rh4+ Ke5 49.Bxg2 f1=Q 50.Bxf1 Rxf1

51.h7 (threatening 52.h8=Q)

Black cannot feasibly prevent 52.h8=Q.

(2) 45…Ke5 46.gxh5 Kf6 47.h6

Black now has an acute problem. <[Toga shows that this is not quite true, below.]> The backward Pd6 must not advance, because the resulting White passer Pd5 would overburden the Black pieces. The R must not move, because a move on the rank permits Kd2 to approach Pf2 and release the pin, while a move on the file releases the pin immediately. The Black Kf6 must stay within the queening square of Ph6, but at the same time avoid light squares, a contradictory constraint.

<[Toga gives the following continuation:

47…Kf7 48.h7 Kg7 49.h5 and now Black must play 49…Kxh7 50.Bd3+, etc.]>

Premium Chessgames Member
  kevin86: What a brilliant finish! White forces the draw by breaking away with the pawn. Black must draw-or else he will lose.
Apr-10-10  tarek1: <SuperPatzer77>
thanks for your correction !
I was analysing under the assumption that, being a piece up for a pawn, White had to have a win somewhere that's why I stupidly missed this simple Rb8.

I think the puzzles should indicate if the desired result is a win or a draw, so we could spare the time we spend desperately looking for a win when a win is nowhere to be found...

Apr-10-10  Eisenheim: I looked too hard for a clever win that wasnt there after g4. with the lack of candidate moves, that seemed a bit forced to me.
Apr-10-10  VincentL: At first glance, I thought white would be looking to draw this "very difficult" position.

But now I think that with 45. g4 white can play for win.

Black cannot get his king to a square where both it and the black rook can attack the white bishop.

Thus whilst the white rook remains on h1, black's f pawn cannot queen.

I therefore see this position as a pawn race.

Since this is a puzzle with white to move, I will guess that white wins the race.

Black can try advancing either the h pawn (after 45....hxg4) or the queen side pawns.

With the h pawn, I see the sequence 45. g4 hxg4 46. h5 g3 47. h6 g2 48. Rh4+ Ke5 49. Bxg2, and the white pawn will queen.

If black tries with the queen side pawns, White needs five moves to queen the g or h pawn after 45. g4, if the black rook does not get involved.

Black needs more moves, starting with d5.

If black moves his rook to defend squares through which the white pawns must advance, white can leave his bishop on f1 to stop black's f pawn queening, and manoeuvre his rook to g2 (or other square) to assist the pawns.

These must be the ideas. There will be a myriad of ways this could have ended - let's check to see how the game went.

Apr-10-10  VincentL: Black was able to draw with 47.... Rxf1. I didn't consider this.
Apr-10-10  chuckchess: About 3 moves too deep
Premium Chessgames Member
  agb2002: White has a bishop for a pawn.

Black would try to trade all the pawns to reach a R+B vs R ending.

White has one move 45.g4 only (45.Bg2 Rxh1 - +; 45.Kc2 Ke3 seems to make things harder):

A) 45... hxg4 46.h5

A.1) 46... g3 47.Rh4+ (unpinning the bishop and freeing the rook) Ke5 (47... Re4 48.Rxe4+ Kxe4 49.h6 + -) 48.Bh3 (48.h6 Rxf1 49.h7 Rd1+ (49... g2 50.h8=Q+ and White will capture the pawn on g2, for example, 50... Kf5 51.Qh5+ Kf6 52.Qf3+) and Black draws at least)

A.1.a) 48... f1=Q 49.Bxf1 Rxf1 50.h6 g2 51.h7 g1=Q 52.h8=Q+ with a winning attack, for example, 52... Kf5 53.Qf8+ Kg5 54.Qh6+ Kf5 55.Rh5+ Ke4 56.Qe6+ Kf3 57.Qf5+ Kg3 58.Rh3+ Kg2 59.Qg4+ Kf2 60.Rf3#.

A.1.b) 48... Rh1 49.Ke2 (49.h6 Rxh3) Re1+ 50.Kf3 Rh1 51.Re4+ Kf6 52.Bg2 f1=Q+ 53.Bxf1 Rxf1+ 54.Kxg3 Rh1 55.Rh4 Rg1+ 56.Kf4 and White has the better ending.

A.2) 46... Rxf1 47.Rxf1 g3 48.Ke2 g2 (48... Kxc4 49.Kf3) 49.Kxf2 gxf1=Q+ 50.Kxf1 Ke5 51.Kf2 Kf5 52.Ke3 Kg5 53.Ke4 Kxh5 54.Kd5 Kg6 55.Kxd6 Kf7 56.Kxc5 Ke7 57.Kb6 Kd7 58.c5 Kc8 59.Kc6 + -.

B) 45... Re5 46.gxh5 Rxh5 47.Be2 followed by h5 and Rh4+ and White should win the endgame.

Premium Chessgames Member
  agb2002: 48.Bh3 in my line A.1 is a blunder: 48... Rh1 49.Ke2 f1=Q+ 50.Bxf1 Rxh4. Better luck tomorrow.
Premium Chessgames Member
  doubledrooks: I found a different first move for white: 45. Rh2. After 45...Rxf1 46. Ke2 Ra1 47. Rxf2, I wasn't sure if white could hold the draw or not. For example:

a. 47...Kxc4 48. Rf4+ Kd5 49. g4

b. 47...Ra2 48. Ke1 Rxf2 49. Kxf2 Kxc4 50. g4 d5 51. g5 and it seems that the black king will have to retreat to stop the white g pawn from queening, while the white king will hold the passed black pawns at bay.

Apr-10-10  wals: Rybka 3 1-cpu:3071mb hash: depth 25:

Black's gain from White's errors:-
22.fxg6 -4.04, better Bf4 -0.63, or Rh2 -0.63.
23.Qb6 -5.09, better Rh1 -4.01, or Be3 -4.23.

White's gain from Black's errors:-
28...Ra1 -1.92, better R8a3 -8.04.
31...Rxa1+ -0.26, better Nxc3 -1.92.
32...Nxc3+ 0.00, better Ra2 -0.32

Premium Chessgames Member
  chrisowen: 45g4 reigns in. Diagram shows white fettered from rook and majesty the gang. Established in good company, water down Damljanovics threat Rajkovic decides, creating a passer of his own.

click for larger view

It was tedious to pick all lines yet holding back h4 is a great strain. Ooh long journey north the pawn seeks.. 49.h7 has a scent you are yielding the half point. Rd1+ Kc2 Rc1+ and it's all over.

Apr-10-10  beenthere240: I thought 49...Rd1+ was pretty cool too.
Apr-10-10  strobane: As a patzer, it would really help if i knew whether the mover is playing for a win or a draw, but i guess that's asking too much (:-((
Apr-10-10  tacticalmonster: 1) Black had only a pawn for the bishop. But he had a powerful seventh rank passed pawn ready to queen

2) Black rook was active: supporting the passed pawn and pinning the bishop

3) Black king was active. It dominated its counterpart. It attacked the c4 pawn and helped create another passed pawn with d5

4) White had a kingside majority and he can sacrifice the g-pawn to create a passed h pawn

5) White rook can support h4 pawn from behind

candidate: g4

a) 1 g4 hxg4 2 h5 g3 3 h6 g2! 4 Rh4+ Ke5 5 h7 gxf1=Q 6 h8=Q+ mating

b) 1 g4 hxg4 2 h5 g3 (2 Re8 3 Rh4) 3 h6 Re8 4 h7 Rh8 5 Rh4+ Ke5 6 Ke3 Kf6 7 Kf6 Kg7 8 Kxg3 White won the b and P vs 2P ending

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