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Carlos Garcia Palermo vs Carla Herrera
32nd Open (2001), Mar del Plata ARG, rd 1, Apr-07
Benoni Defense: Hromadka System (A57)  ·  1-0
ANALYSIS [x]

FEN COPIED

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sac: 38.Nf5+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Dec-29-17  Mayankk: Yes - another of those cases where the first intuitive sacrifice which comes to mind, is the one which actually works as well. Optically the Knight sac on f5 looks quite forceful. But the difficulty in deciding when to trust the optics and intuition and when to do a brute force eval of all options, is what makes this game so interesting.
Dec-29-17
Premium Chessgames Member
  wtpy: Either the puzzles are getting easier or I am getting better. I saw Nf5+ in seconds and not a lot of calculation was necessary. My analysis mirrors that of FSR.
Dec-29-17
Premium Chessgames Member
  An Englishman: Good Evening: The Knight Jump (Nf5 vs. a fianchettoed pawn formation) is a known tactic, but jumping from e7 to f5 is a new twist to me. White tried the same tactic on move 34 (twice in one game--also new to me), but Black had the option to decline at that time because he had a Rook protecting the h6 pawn. Which suggests that 35...Rhe8 was a mistake.
Dec-29-17
Premium Chessgames Member
  FSR: <al wazir> If you look at the earlier comments, you'll see that <crafty> analyzed 38.Rf3 to a win on December 24, 2004. Apparently it liked that move better than the more violent 38.Nf5+.
Dec-29-17
Premium Chessgames Member
  patzer2: Black's game takes a turn for the worse with 29...Nc7?! 30. Nd4 ± (+1.40 @ 30 ply, Stockfish 8). Instead, 29...dxe5 30. Qxe5+ Nf6 = (0.00 @ 31 ply, Stockfish 8) holds the position level.

Earlier according to our Opening Explorer, instead of 7...Na6, Black has had better results with the popular move 7...e6 as in Black's win in Ding Liren vs Carlsen, 2017.

Dec-29-17  mel gibson: I saw this after about 20 seconds
& that was just checking the first move out.
Dec-29-17  NBZ: There was a very interesting mini-battle going on around move 25. White played 25. Qc3 threatening a devastating check on the long diagonal. But Black played well to stop the immediate threat: 25. ... Qa5! 26. b4! (anything to block the White queen) cxb4 27. Rxb4 Qa3! 28. Qd4 Qa7! and finally White gave up and played 29. Qe4.

As <patzer2> points out, Black could now have achieved equality with 29. ... dxe5! (another precise move), but instead erred with 29. ... Nc7 misplacing the knight. Still, a rather intriguing midgame battle with an unusual theme (queen harassing queen).

Dec-29-17
Premium Chessgames Member
  lost in space: I took the 38. Nf5 and 39. Rg3 route. I never considered 38. Rf3, most probably because it is puzzle time.

Easier than yesterday.

Dec-29-17  bcokugras: What happens if black plays 34. gxf5?
Dec-29-17  goldfarbdj: <bcokugras>: 35. Rg3+ and mate next move; White will play one of Qh4, Qxf5, or Qe7, depending on where Black's king goes.
Dec-29-17
Premium Chessgames Member
  agb2002: The material is the same.

Black threatens Nxd5.

The black castle is defenseless. Therefore, 38.Nf5+:

A) 38... gxf5 39.Rg3+ Kh7 (else 40.Qxh6#) 40.Qxf5+ Kh8 41.Qf6+ Kh7 42.Qg7#.

B) 38... Kf8(h7,h8) 39.Qxh6+ Kg8 40.Qg7#.

C) 38... Kf6 39.Qh4+ g5 (39... Kxf5 40.Rf3#) 40.Qxh6+ Kxf5 41.Rf3#.

D) 38... Kg8 39.Qxh6 Ne6 (39... gxf5 40.Rg3#) 40.Rxe6 (40.dxe6 Qxf5 41.exf7+ Qxf7)

D.1) 40... R(f)xe6 41.Qg7#.

D.2) 40... gxf5 41.Rxe8+ Rxe8 42.Rxe8#.

D.3) 40... Qc3 41.Rxe8+, etc.

Dec-29-17  paavoh: Seemed obvious that 38.Nf5+ gxf5 39.Rg3+ leads to a mate. Never really considered 38.Rf3 although it is a great continuation too.
Dec-29-17
Premium Chessgames Member
  DarthStapler: This one was easy...
Dec-29-17
Premium Chessgames Member
  malt: At first looking at
38.Rf3 Rf8 39.Qf6+ Kh7 40.N:g6
Then
38.Rf3 Rf8 39.Nf5+ Kg8 40.Q:h6
finally
38.Nf5+ Kg8
(38...gf5 39.Rg3+ Kh7 40.Q:f5+ Kh8 41.Qf6+ Kh7 42.Qg7# )

39.Q:h6 Ne6 40.R:e6 gf5
(40...Q:c3 R:e8+ and #)
41.R:e8+ R:e8 42.R:e8#

Dec-29-17
Premium Chessgames Member
  morfishine: The final mating sequence is easy once you see it, which follows the same logic as this Will Rogers quote:

“The way to make money in the stock market is to buy a stock. Then, when it goes up, sell it. If it’s not going to go up, don’t buy it!”

*****

Dec-29-17  Eduardo Leon: Hardly “difficult”. I saw it in less than 2 minutes:

<38.♘f5 exf5>

Not capturing is even worse: 38...♔g8 39.♕xh6 or 38...♔f6 39.♘d6+.

<39.♖g3+ ♔h7>

Or else 39.♕h6#.

<40.♕xf5+>

And mate in two more moves.

Dec-29-17  Ratt Boy: <Eduardo Leon: Hardly “difficult”. I saw it in less than 2 minutes>

I concur. I was thinking: "This is a Friday puzzle?"

Dec-29-17  StevieB: Remove the defenders and open up the kings defense. Cost a knight but after that everything falls into place.
Dec-29-17  saturn2: White is attacking on the kingside whilst black's queen side activity had the only effect that his pieces do not protect the king. I went with the more down to earth 38 Rf3
Dec-29-17  Cheapo by the Dozen: It turns out that whatever Black does after Nf5+ (accepted or declined as the case may be) leaves him open to a series of uninterposable checks.

The position looks like that wouldn't be the case, but it actually is.

Dec-29-17  Patriot: <agb2002> I like your line <C> better than what I chose because it is easier. But I went with 39.Nxd6+ seeing that it's a forced mate anyway: 39...Kg7 40.Qxf7+ Kh8 41.Qf6+ Kg8 (41...Kh7 42.Re7+ Rxe7 43.Re7+ and mate next) 42.Qxg6+ and mate next.
Dec-29-17
Premium Chessgames Member
  al wazir: <FSR: If you look at the earlier comments, you'll see that <crafty> analyzed 38.Rf3 to a win on December 24, 2004.> Second!
Dec-29-17
Premium Chessgames Member
  Breunor: My eyes went to 38 Nf5 immediately; but I couldn't find the win. So I went for 38 Rf3.
Dec-31-17
Premium Chessgames Member
  agb2002: <Patriot: <agb2002> I like your line <C> better than what I chose because it is easier.>

This is only the exception that confirms the rule that I end up choosing questionable lines...

Dec-02-18  Swedish Logician: White's play against the Benoni is reminiscent of a Gligorich in top form.
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