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Slim Belkhodja vs Zurab Alekseyevich Azmaiparashvili
Mendoza (1985), Mendoza ARG
Pirc Defense: Classical Variation. Quiet System Chigorin Line (B08)  ·  0-1


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Given 13 times; par: 124 [what's this?]

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sac: 50...Bf3 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 3 ·  Later Kibitzing>
Jul-10-08  Dr. J: <Jason Frost>, <al wazir> <after 62 N-whatever>: Thanks, I had assumed that to win Black had to scoop up the loose knight. As you both showed, Black can go directly after the White king, taking advantage of the knight's vulnerability just to keep it away from offering support to the king's defense. Indeed, once you see this point, it is pretty much unnecessary to calculate variations.
Jul-10-08  JonathanJ: imho this was much easier than yesterday's puzzle
Jul-10-08  eaglewing: <al wazir> and <MostlyAverageJoe>: First, to be clear, I think <al wazir> mistyped 50...Bg3 (instead of 50...Bf3), because truely

50. Ng7 Bg3 51. Nxh5 should be dead draw with different coulored bishops.

Second, <MAJ>, you analyzed 50. Ng7 Bf3 51. Ne6+ Kg4, right?

Jul-10-08  zooter: <MostlyAverageJoe: <MostlyAverageJoe: This does not mean that there is a win there, since the engine does not seem to be making any progress.>

After a while, it started making progress. I am pretty sure now that 51.Ne6+ Kg4 52.gxf3+ Kxf3 will end up with white win.>

Can you post how this leads to a white win?

This shows that in Chess you can't take things lightly at all....oh why did I have to choose Kg4 and a greedy pawn grab with Kxf3 when I could have chosen Kf6 :(

Also, what happens after 50...Bf3 51.Ne6+ Kg4 52.gxf3+ Kg3?

Jul-10-08  eaglewing: I do disagree with many of you regarding the easiness of a Black win after 50. ... Bf3 and 54. Kxf2 h1Q.

The position is nearly a fortress and White simply handed over the Pawn f3 after 56. Kg3. As far as I see the pawn can be traded for Pe5. Example: 54. Kxf2 h1Q 55. Bd5 (Ke2 may be better)Qc1 56. Ke2 Qc2+ 57. Ke3 Qd1 (Threat of Qe1+ and Qf2 to win Pawn f3) 58. f4 ef 59. Nxf4 Qg1+ 60. Kf3 Ke5 61. Ne2 and the advance of the Black King through the center is stopped. White would prefer the knight on d3, bishop c4 and king f3 with Black's K+Q outside of the perimeter defense. Black's King advance along lines g+h should be answered with the counterattack Kf3/e3/d4/c4;c5 on pawn b4. Ofcourse Zugzwang can be a danger and maybe the position is won for Black, but it is not "easily".

Premium Chessgames Member
  TheaN: 3/3

Glad I got this one, as I'm no endgame expert. Black utilizes his very active Bishops to help the infantryman on h4, and does this in an extraordinary way.

Pg2 is and cannot be defended, and taking the Bishop has been calculated by Black to allow the h-pawn to walk on unopposed. The White pieces cannot assist each other and actually block each other (the White King robs him of a defending Bishop move) to stop the passed Ph4 if White takes.

Yeah, try a check, but where does the Knight have to future against Ph4? He does not, and now Black has a way to attack the Knight also (keeping the Bishop where it is).

Freeing the Bishop to go to f1.

Now taking is forced for Black, if not, it allows gxf3 and Bf1 to stop the pawn.


Walking does not work, the King is in the square and wins after Kxf2. It's a small pitfall for Black, but now the King cannot support Bf1, and h3 h2 h1=Q is unopposed after White sacs his Bishop.

Objectively (I've skimmed the Hiarcs analysis by MAJ) not the best defense, but it's the most simplified one by Black, which does NOT allow the next defense, so White should choose either.

He has too. Anything else leads to Bxg2, with h3 h2 h1=Q, unopposed (see the variation above).





B+N+P vs Q, where the Black Queen has plenty of space and can aid her pawns easily. I'm not going to play this, also, in this variation White put his Knight en prise by the Black King so the White pieces are less free than without the check.

Jul-10-08  Nostrils: Suppose white tries 51 Nf5
then presumably 51... Bxg2
and 52 Nxh4

How goes the resulting endgame?
Will black be able to dislodge white from defending the pawns?

Premium Chessgames Member
  johnlspouge: Thursday (Medium): Black to play and win.

Material: 2Bs for B+N. There are no passed Ps on the board, but Bh5 and Bf2 have created a barrier on the e-file the White Kd3 cannot cross. The White Pg2 is vulnerable to the active Black Kg5, so Black has the initiative, dark-square control, and more active pieces. Black must respond to the threat 51.Nxh5, which would leave a drawn ending with Bs of opposite color.

Candidates (50): Bf3

50Bf3 threatening 51Bxg2 then eventually h1=Q

I do not see any defense.

I confess to a certain disappointment: on a Thursday puzzle, I looked hard for greater depth. I thought there must be a swindle, but tucking the Black King out of harm's way with 51.Ne6+ Kf6 was the natural move. I would be curious if anyone could demonstrate a White win after 51...Kg4.

Jul-10-08  eaglewing: Regarding my example line 61. Ne2 seems to be not enough to draw. A winning idea is Qf1+/Qh3+/Qf3/Qe3 and then there is time for the Kingwalk e5/f6/g5/g4/f3.

A better defense may be 61. Nd3+ Kd4 Nf4 and fleeing Kf3/g4/g5. Still analyzing.

Jul-10-08  Jesspatrick: Promoting the h-pawn is one thing. Winning the win afterwards is something else. It's possible for the Q vs N+B+P to slip into a draw without accurate play.

Jul-10-08  openingspecialist: Rather simple puzzle but in a game it's slightly different, especially with a player wanting to hold the bishop pair. I(white) recently had a winning endgame I drew due to not finding the right move. can you spot what i failed to spot?

click for larger view

At this position i was thinking drawn.
My clock read 8.32 and it was + 10

Jul-10-08  zooter: <openingspecialist:>

h5? seems easy enough. If black takes the pawn, white maintains opposition, if not, he gets connected pawns

Jul-10-08  zooter: <zooter: <openingspecialist:>

h5? seems easy enough. If black takes the pawn, white maintains opposition, if not, he gets connected pawns>

Oops, h5 deserves ?? instead of ? as it draws...stupid me. I ran through an engine to check as I was too impatient to wait and Kh6 is the winning move :)

Jul-10-08  openingspecialist: I played h5 realising it was a draw. We agreed on a draw.
Jul-10-08  openingspecialist: Analysing my game afterwards was one GM Ian Rogers who we have had several puzzles from. He was not impressed to say the least and skiped the opening and middle game straight to the last position and told me to play black.
Premium Chessgames Member
  Marmot PFL: Bf3, capturing or diverting the white g pawn and clearing the way for the h pawn to queen. A little easier than the average Thursday - there were not many alternatives.
Premium Chessgames Member
  YouRang: A quick scan of the position left me with the impression that this was going to be about promotion tactics, and with that in mind, 50...Bf3 became an obvious try.

Either the g-pawn takes our bishop, giving our h-pawn a free pass, or our bishop takes the g-pawn, with the same effect.

Other than a knight check, I didn't see any way for white to stop it. Rather easy for a Thursday, IMO.

Jul-10-08  MiCrooks: This was a pretty obvious one if you have any experience with endgames at all. The key is getting your pawn through to Queen, so Bf3 jumps off the screen at you.

And this IS an easy endgame. The only fear from Black's side is that you screw around too long and run into 50 move problems. While White's pieces are all defended, a fortress only occurs if those pieces also somehow keep Black's King from approaching (like Kb1, pb2, Rc3 where White can move the rook back and forth between a3 and c3). Even these positions are tricky as if you move them up the board where the Queen can get in behind the fortress crumbles.

In this case, with all the space behind the White pieces, and with no way of advancing a pawn Black wins with a mating attack.

Premium Chessgames Member
  kevin86: This is almost as simple as a Monday puzzle:50...♗f3 looks as elegant as it is obvious;Other than the pawn at g2,no other white piece has ANY control over the lower right quadrant of the board. White's pawn is diverted or lost,and the h-pawn comes in to queen.
Premium Chessgames Member
  kevin86: In the final position,white is in zugzwang and must move the knight to a position where it will be subject to forks-or white must abandon one of the pawns.
Premium Chessgames Member
  YouRang: <openingspecialist> Very nice little puzzle there -- Thanks! :-)
Jul-10-08  Rama: 30. or 31. b4 ..., jumped off the screen at me. White needs to shut the B's out of his position if he can. Right?
Jul-10-08  hamham: Yes, I solved this one entirely in less than 20 seconds, just like I did yesterday. Are the puzzles get easier or am I just getting better?
Premium Chessgames Member
  YouRang: <Rama: 30. or 31. b4 ..., jumped off the screen at me. White needs to shut the B's out of his position if he can. Right?>

It would be nice to shut out the bishops, but 30.b4 (or 31.b4) unfortunately doesn't do the job, since black just goes with ...Bb6, which is arguably an even better square for the bishop. From there, he can find an excellent post at d4.

Also, advancing the b-pawn allows black's one b5 pawn to effectively hold back white's a & b pawns, and those pawns may eventually be juicy targets for black's DSB.

Premium Chessgames Member
  messachess: Very very easy
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