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Francisco Jose Perez Perez vs Borislav Ivkov
Capablanca Memorial 1st (1962), Havana CUB, rd 15, May-??
Nimzo-Indian Defense: Leningrad Variation (E30)  ·  0-1
ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Oct-24-07  Alphastar: Let's see. We're down the exchange. Our king has no squares to go to. We have no pawn moves. Black is threatening R8g2# and we can't do anything about that. In other words, we have to try to give our bishop & rook to black. One condition: Rg8 cannot (be allowed to) move.

1. Rd6+ seems our only good move.
Black has some tries:
1. ..Ke8? 2. Bxf7+! Kxf7 3. Rd7+ with perpetual or stalemate. If the black king moves to g7/g6/g5 we can play Kxg1. 1. ..Ke7 and I have a hard time seeing how we are going to continue, since black cannot be forced to take our bishop here, thus losing for us.

So a resulting first move: 1. Bxe4!
If black does not take, Bxf5 or Rxf5 is next up with a likely draw. 1. ..fxe4 2. Rd6+ with a perpetual or stalemate. Our rook is invincible due to stalemate, blacks only try would be: 2. ..Ke8 3. Re6+ Kf8 4. Re8+! Kg7!? 5. Rxg8+ Kxg8 6. Kxg1 with a pawn endgame that is probably drawn, though I suppose it could also be a win for white. I'm not interested in looking at it though.

Oct-24-07  eblunt: < whiteshark: 37...Ke7 38.Rxf5 R8g5 39. Rxc5 Rxc5 40. Kxg1 Rxc4 which looks impossible to win >

37...♔e7 38.♖xf5 ♖1g5 prevents ♖xc5 and keeps the second black pawn , and black has some chances IMO

Oct-24-07
Premium Chessgames Member
  YouRang: Clearly, black threatens ...R8g2# on the next move, so white must either be 37. Rd6+ or 37. Bxe4 to guard g2.

White, suffering from a lack of imagination, did what I ALMOST did: Dismiss 37. Bxe4 because it loses the bishop to 37...fxe4 without really removing the mate threat.

However, after a little thought, I realized that (1) I would be thrilled to get a draw, (2) my only mobile pieces are the rook and bishop.

So, losing the bishop is EXACTLY what I want to do! After 37...fxe4 it's crazy rook time and draw by stalemate (if rook is captured) or repitition (if not).

Oct-24-07  Magic Castle: <King mega> White cannot win unless black gives away the game. The most white can do is draw by perpetual check or stalemate by the key move 37. Be4. So white did not resigned a winning position but a drawn one.
Oct-24-07
Premium Chessgames Member
  kevin86: I guess this is the second one in a series of:masters making fatal mistakes at the very end:

White draws by applying the "kamikazi rook" after 37 ♗xe4 fxe4 38 ♖d6+ The rook is immune because of stalemate.

BTW,could white have played his pawns any worse?-he had triplets at move 7 and the doubled king pawns did him in-though they shouldn't have.

Oct-24-07  thezimboman: It is a draw!
37. Rd6+
wherever the king goes, follow closely with rook by check, and once the king captures, Bxe4...

maybe... IDK this puzzle is kinda bleh.

Oct-24-07  newton296: I dont think perez realized he could have fought for a draw here. he resigned without even trying Be4 !

a nice shot to try , but I still think black can win . he doesn't have to take the B turning white's rook into super rook. he can just play on with advantage after ...ke7

Oct-24-07
Premium Chessgames Member
  YouRang: <thezimboman: It is a draw!
37. Rd6+
wherever the king goes, follow closely with rook by check, and once the king captures, Bxe4... maybe... IDK this puzzle is kinda bleh. >

It's no good to start with with the crazy rook. Black happily takes the rook, and and after Bxe4 black has ...R1g5 with 2 rooks vs. a bishop and an easy win.

You need to get rid of the bishop first, which is the key to the puzzle.

Oct-24-07  mpmeints: So, why did white resign if he had a draw/perpetual check? Everyone is talking as if white had some great trick to get a draw/SM, but he resigned. I can see options, but why did he resign?
Oct-24-07  unsound: One explanation would be that he resigned because he just didn't see the stalemate trick, and thought he was getting mated. (The completely obvious happens to be my field.)
Oct-24-07  TheaN: <Peligroso Patzer: <TheaN: ***

White misses an excellent chance with: 37.Bxe4!

***

37....R1g5 38.Bxf5 with not enough progress for Black. At least it's a playable position again.>

After these moves, Black can maintain some initiative with either 38. ... Ke7 or 38. ... Rgg1, so I think it is better for White to capture with the Rook (38. Rxf5).>

Note: I have corrected my own mistake, Rgg1 should have been R1g5.

Although you seem to be right, after said move (R1g5) I don't think Rxf5 Rxf5 Bxf5 draws for White. The double pawns seem so shaky. As nothing has been played, it's only worthy to analyze. On the other hand, keeping the Rook on the board should be the drawing idea (going after c4 and forcing Black out his shell).

Oct-24-07  mpmeints: I think one thing some are missing with BXE4 is that Black can do RG1 G6 and force a trade or force white off the row so he can take the bishop without giving SM since the king can go to F1 when the rook is moved..

If he swaps black still has the advantage. There is nothing forcing Black to take the bishop is it take the pawn. This also takes the perpetual mate out of the picture since the king can now take whites bishop with out a stalemate.

Oct-24-07  greensfield: Black threatens mate next move with <38...Rg2#> so something must be done immediately to address this. <37.Bxe4> covers the mating square g2 Now if <37...fxe4> now <38.Rd6+ Ke7 39.Rd1 Rxd1> is stalemate. Bingo.
Is there anything else Black can do?
Oct-24-07
Premium Chessgames Member
  whiteshark: <eblunt: < whiteshark: 37...Ke7 38.Rxf5 R8g5 39. Rxc5 Rxc5 40. Kxg1 Rxc4 which looks impossible to win >

37...Ke7 38.Rxf5 R1g5 prevents Rxc5 and keeps the second black pawn , and black has some chances IMO>

Yes, it keeps the 2nd pawn. But after <39.Rd5 Kf6 40.Kf3>


click for larger view

I've no idea how to make progress. :D

Oct-24-07
Premium Chessgames Member
  dzechiel: <greensfield: Black threatens mate next move with <38...Rg2#> so something must be done immediately to address this. <37.Bxe4> covers the mating square g2 Now if <37...fxe4> now <38.Rd6+ Ke7 39.Rd1 Rxd1> is stalemate. Bingo. Is there anything else Black can do?>

39...R8g2# is probably an improvement.

Oct-24-07  mercury529: I am new here and am not a chess expert by any stretch of the imagination, so I ask you to please bear with me :).

The way I see it, if the Bxe4 is followed up by the fxe4, black can force this board with the first move (or a more black favorable board):


click for larger view

I may be wrong, but it seems very likely that a game in this position leans very strongly toward the black side of the board. Would others concur or is there a white strategy that can take this board?

Oct-24-07  greensfield: <dzechiel:39...R8g2# is probably an improvement.> Thanks for that. It must be getting late
Oct-24-07  unferth: <mercury529> I'm fairly sure that white's at least equal in that position; black can't force a breakthrough on the kingside, and if he shifts his king to the queenside, he'll lose quickly. white might be able to win by a queenside invasion, but it's a draw otherwise, I think.
Oct-24-07
Premium Chessgames Member
  dzechiel: <mercury529: I may be wrong, but it seems very likely that a game in this position leans very strongly toward the black side of the board. Would others concur or is there a white strategy that can take this board?>

The only way that either side can lose this position is to try and win it. Simply by keeping the opposition either side can prevent the other king from making any headway.

Only if you try to sneak around a side of the board do you leave yourself open to a penetration by your opponent.

Oct-24-07
Premium Chessgames Member
  dzechiel: Here's a possible line in mercury529's position:

42...Kg7 43 Kg2 Kg6 44 Kg3 Kg5 45 Kh3 f6 46 Kg3 f5 47 Kh3 f4 48 Kg2 Kg4 (48...fxe3 49 Kh2 =) 49 Kf2 f3 50 exf3+ exf3 51 e4 Kf4 52 e5 Kxe5 53 Kxf3 =

Oct-24-07  rickturner7: If 37. Bxe4 fxe4(Black can't make this move) then 38. Rg6 draws
Oct-24-07  xrt999: If case anyone hasnt noticed, the solution to todays puzzle is <RESIGN!> it is not 37.Bxe4.

37. Bxe4 is pretty lame, you have to admit. Almost as lame as if you got your self into the pathetic mess white did with twin sets of doubled pawns and black threatening mate. In the resultant mess, chances are you aint going to bother with 37.Bxe4, safe to say?

That being said my answer was 37.Bxe4. After 37.Bxe4 the game is about even and worth a shot. I would play it, although my gut reaction after yesterday was to resign. If I hadnt seen yesterday, though, I would not have had this thought of resigning.

Now, something interesting has just happened. I plugged this position into CM vs CM after 37.Bxe4 the result is 105...Rf8++

cheers.

Jan-05-09  WhiteRook48: why did white resign? he could've forced a draw
May-14-09
Premium Chessgames Member
  Sneaky: <WhiteRook48> I guess Ivkov just isn't as sharp as you.
May-14-09  Ragh: Great game demonstrating the stalemate technique.
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