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Bruno Parma vs Leonid Stein
YUG-URS (1965), Vrnjacka Banja YUG, rd 3, Jul-??
Sicilian Defense: Hyperaccelerated Dragon (B27)  ·  1-0
ANALYSIS [x]

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sac: 33.Rxd7 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
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Apr-14-15
Premium Chessgames Member
  Oxspawn: I would describe the end position as equal since I would be equally capable of losing with white or black. (But some positions are more equal than others.)
Apr-14-15  stacase: Two days in a row, Black's King sits in the corner waiting to be executed.
Apr-14-15
Premium Chessgames Member
  Oxspawn: I got my Cs and Ds muddled (muccled?) in my lines. Hope what I meant was clear even if I wrote something cifferent, I mean, different.
Apr-14-15
Premium Chessgames Member
  whiteshark: <Pedro Fernandez: I like 35.Bh6 > Me, too, as it threatens # and black has to give up more material to avoid it (as <TheaN> has confirmed).
Apr-14-15
Premium Chessgames Member
  CHESSTTCAMPS: white has a knight for a piece and a pawn, but black has a fatal back-rank weakness that white can exploit with

33.Rxd7! and black has only bad choices:

A) 33... Rxd7 34.Rc8+ Bf8 35.Bh6! Rf7 (Nf6 36.Rxf8+ Ng8 37.Nd2 Rf7 38.Ne4 then 39.g5 and 40.Nf6) 36.Bxf8 h5 37.Bd6+ Kg7 (Kh7 38.Bxe5 threatening mate is no better for black) 38.Bxe5+ leaves white a clear piece ahead.

B) 33... Rb8 34.R1c7 Rg8 35.Rxa7 also leaves white a piece ahead with a dominating position.

Time for review...

Apr-14-15  TrollKing: <Pedro Fernandez: I like 35.Bh6> I agree. You either remove the last pair of rooks or you tie Black up even worse.
Apr-14-15  zb2cr: Put me down with the 33. Rc8+ crowd. As explained by others here, it works but is not the most immediate win.
Apr-14-15
Premium Chessgames Member
  Penguincw: A 2 solution puzzle, which I got both of them. :)

The first one I got was 33.Rc8+ Bxc8 34.Rd8+ Bf8 35.Rxf8+ Kg7 36.Rxc8, and white is up a bishop for pawn.

The second one was 33.Rxd7 Rxd7 34.Rc8+ Bf8 35.Rxf8+ Kg7 36.Rc8, same position, and white is once again up a bishop for pawn.

Apr-14-15  Chess Dad: I saw the two moves leading to the resignation, but I would have continued with 35. Rxf8+ instead of the stronger 35. Bh6
Apr-14-15  mistreaver: Tuesday. White to play. Easy. 33?
33 Rxd7 Rxd7
34 Rc8+ Bf8
35 Rxf8
with a technically won position.
////
I agree with everyone, the line with 33 Rc8+ is probably more precise, but however...
Apr-14-15  LIzzard: It looks like a few others were caught up in trying to mate from 35 bh6. Rg7 stops mate, but I kept trying to find a way to make that close the game....
Apr-14-15  LIzzard: <Chess Dad> is 35 Bh6 stronger? It looked great to me, but after Rg7, I was only able to get 1 bishop instead of both, which 35 Rxf8 gives me. Did I miss something?
Apr-14-15  Cheapo by the Dozen: Getting 2 bishops for the rook gives White a winning material advantage, since he was already up exchange for pawn.

If there's something better than Rxd7/Rc8+, which forces Black to pitch the g7 bishop, I didn't see it in a quick look at the position.

Apr-14-15  YetAnotherAmateur: I went with the game line, but it was not as clear to me as one might hope. White starts with R vs B+P advantage.

33. Rxd7 Rxd7 34. Rc8+ Bf8 makes perfect sense, but then it gets trickier to decide:

35. Rxf8+ Kg7 36. Rmoves snags a second piece, which is certainly an advantage but cost white a rook.

35. Bh6 Rf7 pins the bishop down and allows white to trade down a bit more, but the rook with the Ne4 keeps the white king from moseying on over to either help with the attack on his royal opponent or clear the center and queenside to press the advantage.

Neither one is as clearly won a position as one might hope for an "Easy" puzzle - black still has the passed e-pawn that has to be blockaded and/or destroyed, and a knight jumping around that can cause trouble.

Apr-14-15
Premium Chessgames Member
  kevin86: White wins two bishops for a rook and ends a bishop ahead.
Apr-14-15
Premium Chessgames Member
  lost in space: yes, 35. Bh6! is lethal. Makes the line with 33. Rxd7 much better than the 33. Rc8+ line.
Apr-14-15  Chess Dad: <LIzzard: is 35 Bh6 stronger?>

After 35. Bh6, black must respond Rf7 or Nf6 to avoid Rxf8#. Nf6 doesn't help as much as Rf7 does.

From that position, 36. Bxf8 and you have the first position from Once's post. The second Bishop is gone, and even with best play from Black (36... h5), white will also get the pawn at e5 after 37. Bd6+ and then 38. Bxe5.

Apr-14-15  BOSTER: In the pos. black to play 28...


click for larger view

Black could create imbalance in the pos.

playing desperado Ng5 to take the square e4 for the Bishop with tempo.

If Qxd5+ Qxd5 Rxd5 Nh3+ Kh1 Be4

If Bxg5 Be4 Qg3 Rg2+ Qxg2 Bxg2 Kxg2 we have the Q plus two pawns vs two rooks plus knight.

Apr-14-15  Bycotron: After playing 25...Bf5, apparently setting up Ng3, why did black not play 26...Ng3?
Apr-14-15  LIzzard: <Chess Dad> What about Rg7 for black after Bh6? I'm probably missing something obvious, but from there I don't see how to get both bishops?
Apr-14-15  BOSTER: <26...Ng3?>. Qf3
Apr-14-15  Castleinthesky: I had a different version of the solution, 33. Rc8+, which still wins a piece.
Apr-14-15  Chess Dad: <LIzzard: What about Rg7 for black after Bh6?>

Ok, that does avoid checkmate, but here's the continuation:

35. Bh6 Rg7
36. Rxf8+ Rg8
37. Rxg8+ Kxg8

Now Black has lost both Bishops and his only Rook, and all that remains is a single N/5p. White has B/N/4p.

That should be enough for a won endgame.

Apr-14-15
Premium Chessgames Member
  Bubo bubo: If Black's LSB was not there, White would win the DSB with Rc8+. Therefore 33.Rxd7 Rxd7 (33...Rb8 34.Rc7 looks even worse) 34.Rc8+ Bf8 35.Bh6!, threatening mate.

Now a) 35...Rf7 36.Rxf8+ Rxf8 37.Bxf8 simply allows White to trade the rooks for a won endgame, and b) 35...Nf6 36.Rxf8+ Ng8 is also not much fun for Black: one piece down in a terribly cramped position.

Dec-30-17  Grandma Sturleigh: 27...Rxc2? is the culprit here. After 28. g4, 28...Be6 would fail against 29. Qxe4.
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