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Borislav Ivkov vs Levente Lengyel
Hoogovens (1964), Beverwijk NED, rd 5, Jan-13
Spanish Game: Closed Variations. Chigorin Defense (C98)  ·  1-0
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Jan-23-14  marcwordsmith: I saw it up to Qg8+. But then it seems to me that Black escapes with Kd7. I don't see a forced mate for White, and if he takes the rook, then Black has an easy perpetual. What am I missing, anyone?
Jan-23-14  Cheapo by the Dozen: I'm stumped for now.

The obvious try is

32 Rxc5 Nxc5
33 Bb4 Qe7/Qc7/Qa7 (... Rc8 allows a knight fork at d6)

34 Bxc5 Qxc5
35 Qxg7+ Ke8
36 Qg8+ Qf8
37 Qe6+ Kd8
38 Qb6+ Ke8
39 Qc6+ Kf7 (the point of all this maneuvering is that Black is trying to save his rook) 40 Qd7+ Kg8

But at that point I'm still not seeing much of a win for White.

Deviating with 36 Qxf6, which threatens Nd6+, doesn't seem to work against further king flight.

Deviating with 38 Nd6 looks scary, but doesn't seem to actually threaten very much.

And I can't figure out how to divert Black's queen with a knight move, because I can't figure out how to actually force the queen to capture it.

Jan-23-14  woody b: quite easy for a thursday,
got it fast.
Jan-23-14  diagonalley: the first four (white) moves were fairly straightforward to pick out... but the full continuation far less so - at least for somebody at my level. nice puzzle. (b.t.w. i'm using firefox 20.0 under opensuse 12.1 and got switched to pgn4web viewer - has anyone else experienced similar?)
Jan-23-14  morfishine: I see only one candidate: <32.Rxc5> which sets up an annoying pin; the rest is relatively straight foward:

32.Rxc5 Nxc5 33.Bb4 Rc8 34.Nxg7 Rc6 35.Bxc5+ Rxc5 36.Ne6+ Ke7 37.Nxc5

The problem I'm having is 33...Qc7 instead of 33...Rc8: Black seems to hold after (a) 33...Qc7 34.Bxc5+ Qxc5 35.Qxg7+ Ke8 36.Qg8+ Qf8 37.Qe6+ Kd8 or (b) 33...Qc7 34.Nxg7 Qxg7 35.Bxc5+ Kg8 36.Qe6+ Kh8

*****
PM: Darn, I goofed up the move-order missing the nice piece arrangement with Queen on d5 and Knight on f5

*****

Jan-23-14  thegoldenband: <marcwordsmith> 37. Qxa8 Qc1+ 38. Kh2 Qf4+ 39. Ng3 stops the perpetual, and if Black tries ...h7-h5-h4 I think White can nab the h-pawn with a fork. White should win without much trouble.
Jan-23-14  Cybe: After 33. Bb4, black should play 34… h5! Then 35. B:c5+, 35… Kg8, 36. Qd1 and white has a bishop and a knight for a rook. The battle still begins.
Jan-23-14  Cheapo by the Dozen: My line, with 36 Qxf6, gives White 2-3 pawns for the exchange. Probably he can force a queen exchange as part of it. That's about the best I got -- a transition into a favorable-looking endgame.
Jan-23-14
Premium Chessgames Member
  gofer: Black wins a piece after...

<32 Rxc5 Nxc5>
<33 Bb4! ...>

Black cannot use its rook to defend Nc5...

33 ... Rc8?
34 Nd6

<33 ... Qc7>
<34 Bxc5+ Qxc5>
<35 Qxg7+ Ke8>
<36 Qg8+ Qf8>
<37 Ng7+! ...>

37 ... Ke7
38 Qd6+ Ke8
39 Qd5+ Ke7
40 Nf5+

<37 ... Kd7>
<38 Qd5+>

Not a very easy Wednesday, but definitely a nice combination!

~~~

Perfecto!

Jan-23-14  Cheapo by the Dozen: Ah. What I missed is how early Ng7 could be tried.
Jan-23-14  cocker: Black could have tried to upset White's plan by playing 32 ... h5 or even 33 ... h5. Might have had psychological value.
Jan-23-14  Cheapo by the Dozen: Ah. What I missed is how early Ng7 could be tried.

And by the way, while it's true that 33 ... Rc8 is refuted by 34 Nd6, as several of us posted, we missed that the knight fork isn't the whole story -- Black has the option of 34 ... Qxb3, which fails only because 35 Qxc8 is check.

Jan-23-14  PJs Studio: I couldn't see to the end from the diagramed position but found everything. I wonder if Ivkov saw right to 39.Nf5+! before going in for 32.Rxc5

It's only 7 moves

Jan-23-14
Premium Chessgames Member
  gofer: <Cybe>: You are right, given the alternative, black should play 33 ... h5, but white can quickly move into an endgame that should be pretty easy to win AND win another pawn...

<33 ... h5>
<34 Bxc5+ Kg1>
<35 Nh6+! Kh7>
<36 Nxf7 hxg4>
<37 hxg4 ...>

Not over, but pretty good for white...


click for larger view

Jan-23-14
Premium Chessgames Member
  Penguincw: I was thinking of 33.Qxg7+ Qxg7 34.Bh6 Qxh6 35.Nxh6, but when the smoke clears, material is only even.
Jan-23-14  abuzic: 32.?
A) 32.♖xc5 ♘xc5

<32...h5 33.Bb4 Nxc5 <(33...hxg5?? 34.Rc8#)> 34.Qg3 Rc8 35.Nd6 Qxb3 36.Qxb3 Nxb3 37.Nxc8+ wins a piece>

33.♗b4 ♕c7

<(33...Rc8 34.Nxg7 Rc6 35.Bxc5+ Rxc5 36.Nd6+ Ke7 37.Nxc5 wins a piece)>;

<33...h5 34.Qg3 Rc8 35.Nd6 Qxb3 36.Qxb3 Nxb3 37.Nxc8+ wins a piece>

34.♗xb4 wins a piece: 34...♕xc5? 35.♕xg7+ ♔e8 36.♕g8+ ♕f8 37.♘g7+ ♔d7 38.♕d5+ ♕d6

<38...Ke7 39.Qb7+ Kd8

<(39...Kd6 40.Nf5+ Kc5 41.Qc7+ Kb4 42.Qc3#)>

40.Qxa8+ Ke7 41.Qb7+ Ke8

<(41...Kd6 42.Nf5+ Kc5 43.Qc7+ Kb4 44.Qc3#)>

42.Qb8+ Kd7 43.Qxf8 heavy material loss)>

39.♕xa8

Jan-23-14  mel gibson: 32 Rxc5 is the best move.

The computer shows that 32 b4 still wins
for white - but takes longer.

Jan-23-14
Premium Chessgames Member
  kevin86: White strikes quickly and hard!
Jan-23-14
Premium Chessgames Member
  agb2002: The material is identical.

White can try to take advantage of the pin after 32.Rsc5 Nxc5 33.Bb4:

A) 33... Rc8 34.Nd6 Qc7 35.Qxc8+ Qxc8 36.Nxc8 Ke8 37.Bxc5 Kd7 38.Nb6+ Kc6 39.Be3 + - [B+N].

B) 33... Qc7 34.Bxc5+ Qxc5 35.Qxg7+ Ke8

B.1) 36.Qb7

B.1.a) 36... Rc8 37.Ng7+ Kd(f)8 38.Ne6+ and 39.Nxc5, wins.

B.1.b) 36... Rd8 37.Ng7+ as in B.1.

B.1.c) 36... Ra7 37.Ng7+ Kd8 38.Ne6+ Ke8 39.Nxc5 Rxb7 40.Nxb7 + - [N].

B.1.d) 36... Qc8 37.Qe7#.

B.1.e) 36... Qc1+ 37.Kh2 Qf4+ 38.Kg1, perpetual.

B.2) 36.Qg8+ Qf8 (else 37.Qxa8 + -) 37.Ng7+

B.2.a) 37... Kd8 38.Qxf8+, etc.

B.2.b) 37... Kd7 38.Qd5+ Ke7 (38... Kc8 39.Qxa8+ + -; 38... Kc7 39.Ne6+ + -; 38... Ke8 39.Qxa8+ + -; 38... Qd6 39.Qxa8 + -) 39.Nf5+ Ke8 40.Qxa8+ Kf7 41.Qxf8+ + - [N+P].

B,2.c) 37... Ke7 38.Qe6+ Kd8 39.Qd5+ as in B.2.b.

36.Qb7 almost wins but 36.Qg8+ wins.

Jan-23-14  Patriot: Material is even.

There is a multitude of candidates it seems: Qxg7+, Bh6, Nxg7, b4, Rxc5, Nh6

32.Rxc5 seems best.

32...Nxc5 33.Bb4 Rc8 34.Nd6 Qc7 35.Qxc8+ Qxc8 36.Nxc8

32...Nxc5 33.Bb4 Qc7 34.Bxc5+ Qxc5 35.Qxg7+ Ke8 36.Qg8+ Qf8 37.Ng7+ Ke7 38.Qe6+ Kd8 39.Qd5+ Ke7 (39...Kc7 40.Ne6+ ) 40.Nf5+ followed by 41.Qxa8+

Jan-23-14  Halldor: I saw the game continuation up to move 36, but failed to see further how White could win the rook so I can't claim any point for this.
Jan-23-14  James D Flynn: 32.Rxc5 Nxc5 33.Bb4 Qc7(if Rc8 34.Nd6 (with simultaneous attack on Q and R) f5 35.exf5 Qd7 36.Nxc8 Qxc8 37.f6 Qxg4 38,Bxc5+ Kf7 39.hxg4 gxf6 and White is up a B for a P with an easy win in the endgame) 34.Bxc5+ Qxc5 35.Qxg7+ Ke8 36.Qg8+ Kd7 37.Qxa8 Qc1+ 38.Kh2 Qf4+ 39.Ng3 h5 40.h4 Qxh4+ 41 Kg1 and Black runs out of checks and White is a piece up with and easy endgame win..
Jan-23-14
Premium Chessgames Member
  patzer2: Picked 32. Rxc5! and saw as far as 36... Qf8, but had difficulty finding the win from there.

After viewing the game ending, it's much easier visualizing the entire combination.

If 37...Ke7, then 37... Ke7 38.Qe6+ Kd8 39.Qd5+ (as <agb2002> notes) puts us essentially back into the game continuation.

Jan-23-14  abuzic: The alternative to 32.Rxc5 is 32.b4, which is less thematic, but should lead to winning position for white:

32.b4 Bb6 33.Rc6 h5 34.Qg3 Bd4 35.Re6 Rc8
<35...Qxe6 36.Qxg7+ Ke8 37.Qh8+ Nf8 38.Ng7+>

36.Re7 Qxe7
<36...Qg8? 37.Qg6 wins on the spot>

37.Nxe7 Kxe7 38.Qxg7+


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Apr-21-14  LIFE Master AJ: Bravo!
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