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Vladimir Peresipkin vs Valery A Chekhov
URS-ch FL44 (1976), Minsk URS, Oct-??
Sicilian Defense: Nezhmetdinov-Rossolimo Attack (B30)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Jan-26-21  Nullifidian: 24. ♘d6. If you don't do anything about the threat, then Ne8+ wins the rook outright, so 24... ♙exd6 25. ♙cxd6 ♗e5 26. ♙dxc7 ♗xc7 is the best option as it "only" loses the exchange.
Jan-26-21
Premium Chessgames Member
  al wazir: Chekhov was an IM at the time this game was played, and he didn't see anything wrong with 23...Bb2.

Playing black, I would not have seen it either. But I'm not an IM.

Jan-26-21  areknames: 24.Nd6 is a lovely tactic, this is a really good puzzle.
Jan-26-21  saturn2: 24 Nd6 traps the Rc7

24....exd6 25.cxd6 wins the exchange
24...Kh7 25. Ne8 Be5 same

Jan-26-21  sfm: They didn't waste their time, reaching the endgame after 18 moves. Black has no weaknesses at all, but White's c5 pawn is a target for the black bishop after Be5-b2-a3, then chasing the knight away with -,f5. Easy to see, so White's 23.a3 must have puzzled Black. Pointless, even inviting Bb2, speeding up the end of c5. LOL! Sly bastard!
Jan-26-21  Walter Glattke: A) 24.Nd6 Be5 25.Ne8+ Kh7 26.Nxc7 Bxc7 27.Rxe7 Bd4 28.Rxf7+ Kg8 29.Rxb7 Bxc5 R+2P for B B) 24.Nd6 exd6 25.cxd6 Be5 26.dxc7 Bxc7 27.Rd7 Be5 28.Rxb7 less bad
Jan-26-21  saturn2: <AnEnglishman And that's the best aspect of 3.Bb5> It is the reason some play 2...e6 because after 3.Lb5 comes a6.
Jan-26-21  Brenin: At first glance Black has the better position: B vs N on an open board, and better pawn structure. His only weakness is that his R has no safe moves. And that's the clue to this excellent puzzle: 24 Nd6 is a bolt from the blue, winning the exchange and the game, e.g. 24 ... exd6 25 cxd6 Be5 26 dxc7 Bxc7 27 Rd7, regaining the P.
Jan-26-21
Premium Chessgames Member
  agb2002: White has a knight for a bishop.

Black is about to play b6 to increase the mobility of the rook.

White can take advantage of the position of the black rook with 24.Nd6:

A) 24... exd6 25.cxd6 Be5 (25... Bf6 26.dxc7 wins) 26.dxc7 Bxc7 27.Rd7 wins decisive material.

B) 24... b6 25.Ne8+ wins the rook.

C) 24... Kh7 25.Ne8 also wins the rook.

D) 24... Be5 25.Ne8+ Kh7 26.Nxc7 Bxc7 27.Rd7 is similar to A.

Jan-26-21  Damenlaeuferbauer: After long thinking, the unknown (at least to me) Russian chess player Vladimir Peresipkin finally found the very nice temporary knight sacrifice 24.Nd6!, winning at least the exchange and because it is an ending the game. This guy beat V. Savon and V. Chekhov, not a bad achievement at all.
Jan-26-21  TheaN: Very original trapping combination that, I have to say, I haven't seen before in a similar form.

<24.Nd6!> threatening Ne8, where it's relevant it's check if Black creates air for the rook (24....b6 25.Ne8+ +-) or the rook's trapped if the king moves (24....Kh7 25.Ne8 +-). If captured, <24....exd6 25.cxd6 Be5 (Bf6 26.dxc7 +-) 26.dxc7 Bxc7 27.Rd7 +->.

Jan-26-21
Premium Chessgames Member
  FSR: 24.Nd6 exd6 25.cxd6 1-0. Old hat.
Jan-26-21  zb2cr: A clever move, 24. Nd6, threatens Ne8. Black's Rook is trapped, and Ne8 right now is a fork of the Rook. So, 24. ... exd6; 25. cxd6, Be5; 26. dxc7, Bxc7; 27. Rd7, Bb6; 28. Rxb7. White has the exchange and a Pawn.
Jan-26-21  King.Arthur.Brazil: Here is the bait (a3)! Here the fish (♘a6)! I guess that Black underestimated White chances. The King see these lines: 23...b5 24. b4 a5 25. ♖a8 axb4 26. axb4 f5 ± or 24. cxb6 axb6 25. c4 b5 26. ♖b8 bxc4 27. bxc4 ♖a7 28. ♖c8 ♖a6=. Black still have chances to draw or even win (if White make some mistake).
Jan-26-21  QueenMe: Getting the puzzle was easy. The surprise was the such a position actually occurred over the board in a real tournament game. One has to wonder when white saw the vulnerability.
Jan-26-21
Premium Chessgames Member
  chrisowen: EWT iva nd6 van graaffs gib vet iva adrifts barbnabus nub EWT iva thrones for wet friskys iva von guv blankets blankcheck cig imp hid phd djs vue its loath vet fey its iva parkline iva wibbles vas wisdoms;

pb6 fab hah aka pf6 fluffers vibrant guv abled it key guv arrives bb2 gotchas iva abbey it on valved it key guv dug flighted von guv tot iva add huh abbey it monk iva hoc a gib iva it coin it minted mit nd6 axe;

Jan-26-21  alshatranji: Did Chekhov suffer an "An Attack of Nerves"? He had the advantage up to move 23 when he suddenly lost it (literally) with Bb2.
Jan-26-21
Premium Chessgames Member
  chrisowen: Inch it along the midstake he did cull it ok bb2 off.
Jan-26-21  DrGridlock: Took a while to finally get the trap.
Since there are no queen or rook sacs, I enumerated the weaknesses in black's position. When I got to "black's rook has no safe squares to which it can move" I thought it would be really neat if white could attack black's rook. White's knight can't do that in one move, but it can in two (via d6 and e8) with the later being a check which forks the rook. if black takes the knight on d6, he allows the pawn to complete the "attack the rook" task, if black does not take the knight, he allows the deadly fork on e8. Maybe a little deeper "think" than a typical Tuesday.
Jan-26-21
Premium Chessgames Member
  gawain: Remarkable puzzle. With so few pieces on the board--well, few pieces but so many pawns--Black's rook still manages to get trapped!
Jan-26-21  njchess: <alshatranji> I think Black under valued the implications of ♘d6, especially after playing 21. ... ♔g7 and maybe over valued White's queen side pawn structure. The threat implied by 22. c5 was clearly missed. 23. a3 is a waiting move, maybe even a baiting move, that should have indicated to Black that he had a solid position. Given the game line, he probably should have tried to drive White's Knight away.

I got 24. ♘d6! mostly because I could find nothing else (I did take a look at possibly trapping the Black bishop, but that ploy is hardly decisive nor does it actually work). However, it took me a long time to understand that Black could not refuse the sacrifice (i.e. 25. ♘e8+ +-).

Jan-26-21  DrGridlock: As to when "white saw the vulnerability" -
According to Fat Fritz, black has the better position (as alshatranji) points out until 23 ... Bb2. The black bishop has one very important job - to stay on the b8/a2 diagonal and prevent the cute knight entry on d6.

The alternative 23 ... b6 solves so many of black's potential problems - gives the rook an additional square on b7, and forces the trade of the pesky pawn on d5.

Jan-26-21
Premium Chessgames Member
  mjmorri: I found it but only because it was a puzzle. I would never have looked for this during a game.
Jan-26-21  R4f43l L3 M4550n: 19... Rc8 and 20... Rc7 fine defensive idea to hold the position equal, but unfortunately the Rook was traped later on.
Jan-27-21
Premium Chessgames Member
  HeMateMe: That poor black rook is wrapped tightrer than a can of tuna.
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