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Leandro Perdomo vs Leonardo Duarte
Argentinean Championship (2005), rd 6, Sep-14
Benoni Defense: Modern Variation (A56)  ·  1-0



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sac: 31.Rxg6+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 3 ·  Later Kibitzing>
Oct-13-05  Hemmeireoid5: Would anyone care to speculate or Analyse the continuation 29. Rf-f3 for white. Is that not also winning?
Oct-13-05  paulchess: Rank Amateur: doesn't Black still have a chance to trade Queens? How about 33...Qg7? ------------
I thought so too at first, but white counters with QxR! on e8.
Oct-13-05  SamuelS: <Hemmeireoid5>, that was the continuation which I thought about first, but it does not win. Black plays Rxe4 in almost every variation, threatening to give a perpetual check starting with Re1+.
Oct-13-05  SamuelS: For example: 28. Nh5 gxh5 29. Rff3?! Rxe4! 30. Rfg3+ Ng6 and I cannot find a sensible way to prevent 31...Re1+ etc.
Oct-13-05  SamuelS: And 29...Qxe4 might be even better...
Oct-13-05  RACVT: 31.... Kh8
32. Rxf6, Rg8
33. Rf7, Rxg2+
34, Kh1, Qxe4 can complicate things

34, KxR with Qxe4+ maybe?

Oct-13-05  Saruman: SamuelS

And I myself have memorized 400 digits compared to your puny 255. Even today as I recited them at I got every one of them right; without having practiced for nearly two months.

Oct-13-05  AlexanderMorphy: YES, i got this one! Can anyone tell me about the two players?
Oct-13-05  Hoozits: After 23...Qg7 24. Qxe8+, Kh7, then what? I suppose it doesn't look great for black, but I'm wondering if it's not better than the text.
Oct-13-05  Saruman: <Hoozits>

You meant 33.-Qg7 right? In that case 34.Rxh5+ Kg8 35.Qxe8+ Qf8 36.Rh8+ Kxh8 37.Qxf8+ wins easily. BTW <al wazir> mentioned it on this very page!

"but I'm wondering if it's not better than the text."

Well, everything is better than resigning!

Oct-13-05  EmperorAtahualpa: I think this puzzle is easier than yesterday's puzzle. The combination is long but easy to calculate.
Oct-13-05  Hoozits: Actually, I meant 32. ...Qg7, etc.
Oct-13-05  dakgootje: Just did see that if after 28. ♘h5 black was forced to take the knight and as there were no other obvious moves i calculated only that move through, so i got 29. ♖g3 ♘g6 30. fxg6 fxg6 not much after that. but then the problemes came...with no board i was wondering if white could sac the rook too, but considered it too risky to do...In a normal game i think i would have looked at least at ♘h5 but would never play ♖xg6...
Oct-13-05  dakgootje: think after 32. ...♕g7 33. ♕xe8 ♔h7 something like 34. ♕xh5 ♔g8 35. ♕e8 ♔h7 36. ♖f3 threatening 37. ♖h3 ♕h6 38. ♕f7 ♔h8 39. ♖xh6# but i expect black to play 33. ...♕f8 instead of 33. ...♔h7
Oct-13-05  LIFE Master AJ: Took just a few seconds to solve ... but its pretty "stock." Of course the puzzles get harder as the week progresses ...
Oct-13-05  LIFE Master AJ: Alternatively, slower methods are not as effective, (as 28.Nh5!!, gxh5; 29.Rg3+, Ng6; 30.PxN/g6, fxg6; 31.RxP/g6+!, etc).

It looks like White could play the slower idea of Rf3, preparing Nh5. (The idea being Nh5, and Rfg3+, with a quick mate to follow.) However after 28.Rf3 Qe5; 29.Nh5 Qd4+; Fritz 8.0 shows that Black is actually better.

Oct-13-05  LIFE Master AJ: Anybody analyze the whole game? I wonder what Black's "losing move" was? (Move 24 or 25 for Black?)
Oct-13-05  YouRang: Funny, I thought this was easier than yesterday's. The key things to notice: (1) The 28. Nh5 sac forces open the g-file for a rook. (2) White had time to lift the f1 rook into action, because black's pieces were effectively blocked out (by black's own pawns) from helping defensively.

A few moments in consideration of these key elements soon revealed the winning attack.

Oct-13-05  YouRang: <LIFE Master AJ: Anybody analyze the whole game? I wonder what Black's "losing move" was? (Move 24 or 25 for Black?)> I think the moves you suggest are good candidates for the "losers". White had a rook bearing down on the h-file, with his queen ready to jump to h6, and a knight ready to attack as well. White was clearly trying use his bishop to obliterate the defensive support around black's king.

When he captured the bishop on move 25, leaving doubled f-pawns that blocked other black pieces from helping out on defense, the stage was set for a successful kingside assault.

Premium Chessgames Member
  kevin86: With the queen and emerging rook-white had but to open a file or two-even at the cost of a rook-at that price,it was dirt cheap.
Oct-13-05  treacheroust: I think there is a way for white to get blacks queen, or mate: 29. Rxh5 ... followed by 30. Rg5 forcing fxg5, then mate at Qg7, or white wins the queen if Qxf6. Am I missing something?
Oct-13-05  YouRang: <treacheroust> What if 29...Ng6? If 30. Qh7+, then 30... Kf1. If 30. fxg6, then 30...fxg6 and the queen guards h7. Is there still mate? Maybe, but I'm not seeing it.
Oct-13-05  treacheroust: <YouRang> I think you found the flaw. Thanks.
Premium Chessgames Member
  OhioChessFan: Black's 24th seems an obvious candidate for losing move.
Oct-13-05  engendro: The two players are argentine juniors; Leandro Perdomo was the U-20 champion last year.
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