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Peter G Large vs Jay R Bonin
11th Lloyds Bank Masters Open (1987), London ENG, rd 5, Aug-??
French Defense: Winawer. Advance Variation General (C16)  ·  0-1



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Given 12 times; par: 45 [what's this?]

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sac: 25...Rxh2+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
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Oct-13-06  ceebo: <eaglewing: Rh2 allows regrouping Nd7 and Qxd5> but then 30... f4+ 31 Ke4 f5+ 32 Kd3 Qe2#
Oct-13-06  Fischeristhebest: <eaglewing> 29.Kf3 Qg4+ 30.Ke3 Qg3+ 31.Rf3 <f4+> 32.Kd3 Qxf3#.
Oct-13-06  eaglewing: You are right <ceebo>. On <28. Kf3 Qg4 29. Ke3 Rh2> is decisive:

30. Nd7 Kc8 31. Qxd5 f4+ 32 Ke4 f5+ 32 Kd3 Qe2# <by ceebo>.

30. Ne6 Qe4#
30. Rg1 f4 Kd3 Qf3#
30. Rae1 Qg3 Rf3 f4 Kd3 Qxf3 Re3 Qd1#
30. Rf2 Qg3 (Rf3 f4 ...) Ke2/d2 Qxf2+ and mate soon.
30. Rf3 Qg5 (Kd3 Qd2#) Rf4 Qg3 Rf3 f4 ...
30. Rf4 Qg3 Rf3 f4 ...
30. Rxf5 Qg3 Rf3 Qg5 Rf4 Rh3 Ke2 Qxf4 and the threats Qe3 and Rh2 decide.

<Fischeristhebest> You mixed up the lines in your comment. The line 28. Kf3 means Rh2 is not yet played.

Oct-13-06  eaglewing: Nice line by the way, <ceebo>. Maybe there is even another solution, but it astonishes me, that even the Pawn f6 is needed here in this line.
Oct-13-06  euripides: Marco <Then, instead of 26...Rh8+ I thought of 26...Qe8, it's less forcing but should win as well:

a) 27.Rf3(f5) Qg6

b) 27.Na6+ > now simply 27....Kc8 seems to do the job.

Oct-13-06  Marco65: <euripides> 26...Qe8 27.Na6+ Kc8 is not simpler, because you need to find how to win in the line 28.Qe2 Qg6 29.Qf3 Rh8+ 30.Qh3 Rxh3+ 31.Kxh3 and now the white knight is not "en prise". Probably 28...Rh8+ wins again, but in this case why not playing it at move 26 as in the text?

I was trying to leave the king trapped on the h-file and make it work because I felt that was simpler to calculate, and the discussion on 28.Kf3 seems to support my point.

Oct-13-06  moppa: I was lazy today, and, altough found the right move, only said to myself "that's what I'd play in blitz".

Just counted to 27.Qg8+ and figured out that it should win.

Oct-13-06  RandomVisitor: 1: Large Peter G (ENG) - Bonin Jay R (USA), London (England) 1987

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Analysis by Rybka 2.1o mp:

1. (-6.45): 24...Nxh2 25.Bxh2 Rxh2+ 26.Kxh2 Rh8+ 27.Kg3 Qg8+ 28.Kf3 Qg4+ 29.Ke3 Rh2 30.Rxf5 Qxf5 31.Qf1

2. (-2.14): 24...Qe8 25.Qa6 Na5 26.Qe2 bxc5 27.Rae1 Qc6 28.exf6 Nxf6 29.Rb1+ Ka8 30.Rb5 Nb7 31.Rfb1

(, 13.10.2006)

Oct-13-06  euripides: <26...Qe8 27.Na6+ Kc8 is not simpler, because you need to find how to win in the line 28.Qe2 Qg6 29.Qf3 Rh8+ 30.Qh3 Rxh3+ 31.Kxh3 > yes I had thought about 29.Rf3 Qh5+ but not 29.Qf3 in this line. However, now Black has 31....Qg4+ 32.Kh2 Qe2+ and picks up the knight on a6, I think.
Oct-13-06  Castle In The Sky: Got it, I didn't play the combination all the way through to mate, but I saw the net and the double sacrifice.
Oct-13-06  Marco65: <euripides> You're right!
Oct-13-06  Marco65: <RandomVisitor> Rybka's 30.Rxf5 is a stunning defence move, it seems Black doesn't checkmate any more, but can you run the engine again from that point to explain why the evaluation is so much in favour of Black?
Premium Chessgames Member
  gawain: That was a good one! Although I saw that the sacrifices would leave the W King exposed I simply did not see how B was going to finish the job. Credit to Bonin who must have seen, at move 24, the resource 32 ...a6 to deflect the White Q from covering the checkmate square.
Premium Chessgames Member
  kevin86: Funny-I got yesterday's puzzle with no trouble,but couldn't even touch today's. Btw,I saw something a little different- if 25 ♘a6+ ♕xa6 26 ♕xa6 ♘f3+ 27 ♗h2 ♖xh2# you don't HAVE TO take the rook.
Oct-13-06  RandomVisitor: <Marco65>Rybka thinks that 30.Rxf5 should be followed by 30...Qg3+ or 30...Qh3+ where it is a mate in 13.

Oct-13-06  Tenderfoot: I like 33.Qxd5. It's like White thought, "I'm going to lose, but not without taking this pawn!!"
Oct-13-06  YouRang: Well, I did get the first few moves: sac'ing the knight and rook for the pawn and bishop in order to bring the queen into play with check, and get a Q+R attack going.

I couldn't see how it would all work out after that (and was too lazy to try hard), but I know that Q+R attacks are usually lethal.

Oct-13-06  Stonewaller2: Large Bonin', huh huh, huh, huh huh . . .
Oct-13-06  crwynn: Actually I thought that 25...Qxa6, so far from being the hard part of the puzzle, made it easier from the viewpoint of a lazy problem-solver: it's such a nice variation that it can't be irrelevant, therefore 24...Nxh2 is the solution! I thought the tricky line was that in the game, where I reckoned 30...Qe3? as "inevitable mate", missing that White controlled e2 and can take control of d2 by 31.Nb3.
Oct-13-06  Suzuki50: Along the same line, if 24. Na6+ Qxa6 25. Qxa6, then 25... Nxh2 ! Also if White saw the whole combo it would have played 23. Bxh6
Oct-15-06  trumbull0042: 33. Qxd5 is a hoot!
Oct-15-06  trumbull0042: <Tenderfoot: I like 33.Qxd5. It's like White thought, "I'm going to lose, but not without taking this pawn!!"> Yeah, exactly!! Haha!
Oct-16-06  eaglewing: <Marco65 and RandomVisitor>: Who needs for 30.Rxf5 Rybka? <ceebo> is much more helpful.
Jan-19-07  Whitehat1963: Large really boned himself with 33. Qxd5!
Apr-04-15  A.T PhoneHome: Large-Bonin; the day Bonin wanted his surname to be Skull.
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