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Eric Lobron vs Jan Timman
SWIFT blitz (1992), Brussels BEL, rd 3, Jul-08
Queen's Indian Defense: Kasparov-Petrosian Variation. Petrosian Attack (E12)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
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Oct-23-17
Premium Chessgames Member
  malt: 35.R:f8+ K:f8 36.Ne6+ and 37.N:d4
Oct-23-17  Cheapo by the Dozen: Nice one. I spent quite a few seconds checking first for mate, then for a mating attack that turns into a knight fork, before finding the actual solution, which has little to do with mate threats at all.
Oct-23-17
Premium Chessgames Member
  whiteshark: QID w/ <35.Rxf8+!>

q.i.d. ;)

Oct-23-17
Premium Chessgames Member
  renrod00157: Took me a minute to see it, but I did see it. That's good enough for me. I love using a knight fork.
Oct-23-17  claudi: I wonder how a chess grand master like Timman played 34...b5 ??.He was probably having almost no time on his clock
Oct-23-17
Premium Chessgames Member
  patzer2: <WorstPlayerEver: Timmetje and his Black Queen, 28... Qa2 is a blunder.> No doubt 28...Qa2 wasn't the best move. The computer recommendation 28...Kg8 = was surely better.

However, our Stockfish application indicates Black is still in the fight with a difficult position after 28...Qa2 30. Ng5 Qa1+ 31. Kh2 Qd4 32. Kg3 f5 33. f3 ± (+0.66 @ 21 depth.)

The clearly decisive mistake was 30...Qf6? allowing 31. Ng5 +- (+4.43 @ 25 depth). Instead, 30...Kg8 31. Rxf7 Qb2 ± (+1.21 @ 23 depth) puts up considerable resistance -- especially in a blitz game.

Oct-23-17
Premium Chessgames Member
  patzer2: <claudi> Timman was lost no matter what he played on his 34th move in this blitz game. White's threat of 35. Rc8 +- was already clearly decisive.
Oct-23-17  BOSTER: < claudi: 34...b5?>. You are right. Black'd play in-between move 34...Qd1+.
Oct-23-17
Premium Chessgames Member
  patzer2: <Boster> 34...Qd1+ 35. Kh2 +-.
Oct-23-17  shysun: It took 30 seconds for me to solve this.
Oct-23-17
Premium Chessgames Member
  Eggman:


click for larger view

Position after 34.Rxf7

A prettier finish here would have been 34...Qg4 (to side step both 35.Rxf8+ and 35.Rc8) 35.Rxf8+! Kxf8 36.Nxh7+ Ke8 37.Nf6+ Kd8 38.Nxg4 Kxc7 39.Kf1 and White wins easily.

Oct-23-17  BOSTER: <Eggman> Does your line work after 34...Qd1+ 35 Kh2 Qh5?
Oct-23-17  BOSTER: If Rc8 Qh6.
Oct-23-17  BOSTER: Really? 37.Nf7+ Kxg7.
Oct-23-17
Premium Chessgames Member
  patzer2: 34...Qd1+ 35 Kh2 Qh5 36. Rc8 Qh6 37. Rxh7 +-.
Oct-23-17
Premium Chessgames Member
  Eggman: <Boster> It looks like my line does work after 34...Qd1+ 35.Kh2 Qh5, since after 36.Rxf8+ Kxf8 37.Nxh7+ Ke8 (or 37...Kg8) 38.Nf6+ Black's queen is coming off and White will be up a piece and a pawn once again.

Also, after 36.Rc8 Qh6, White wins easily after the simple 37.Rcxf8+ Qxf8 38.Rxf8+ Kxf8, which is why I gave 34...Qg4, preventing 35.Rc8, in the first place.

Oct-23-17
Premium Chessgames Member
  Eggman: <chrisowen> Couldn't have said it better myself!
Oct-23-17
Premium Chessgames Member
  Bubo bubo: 35.Rxf8+ lures the black king into a fork: 35...Kxf8 36.Ne6+ and 37.Nxd4, White being up a rook and a knight.
Oct-23-17
Premium Chessgames Member
  Eggman: Position after 34.Rxf7:


click for larger view

By the way, it looks to me like Black would still be in the game after 34...Qa1+ (instead of 34...b6??) 35.Kg2 Qxa3 (creating connected passers and keeping the queen far away from her own king so as to avoid knight forks) 36.h5 (intending 37.h6 and then 38.Rg7+ Kh8 39.Nf7#) gxh5 (now White gets a passer) 37.Rc8 a4 (diagram)


click for larger view

Now if 38.Rxf8+ Qxf8 39.Rxf8+ Kxf8 I'm not at all sure that White can even draw, for example 40.Ne6+ Ke7 41.Nd4 a3 42.f4 Kd6 43.Kf3 a2 44.Nb3 Kd5 45.Ke3 Kc4 46.Na1 Kc3 (diagram)


click for larger view

47.f5 Kb2 48.Kd2 Kxa1 49.Kc1 b5 50.f6 b4 51.f7 b3 52.f8=Q b2+ 53.Kd2 b1=Q and Black appears to be winning.

Oct-23-17  BOSTER: < Eggman 37.Rc8 > Maybe this is mistake.Better Rg7+ Kh8
and Nxh7.
Oct-23-17  paul1959: <Eggman> 35..Qxa3 36 Nxh7 Nxh7 37 Rg7+ Kf8 38 Rxh7 Kg8 39 Rhg7+ Kf8 40 Rgd7 Ke8 41 Rh7 wins

If 40 ... Kh8 instead, Rge7! wins the queen

Oct-23-17
Premium Chessgames Member
  patzer2: <Eggman> 34...Qa1+ 35. Kh2 Qxa3 36. Ne4! +-.
Oct-23-17
Premium Chessgames Member
  Eggman: I suppose you are right, <paul1959>, and even righter, <patzer2>!
Oct-24-17
Premium Chessgames Member
  patzer2: <Eggman> Your trickiest line for me was 34...Qa1+ 35. Kh2 Qb4 when White wins with <BOSTER>'s suggestion 36. Nxh7!+-.
Oct-25-17
Premium Chessgames Member
  kevin86: White gives up the exchange to set up a fork win of the queen!
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