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Nicola Pegoraro vs Pierangelo Trotto
Arvier op (2004), rd 6, Jan-05
Sicilian Defense: Najdorf. Polugayevsky Variation Simagin Line (B96)  ·  1-0



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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Aug-07-14  M.Hassan: <once: And it is the queen that belongs on the f file, not one of the rooks.>

What do you mean in this case?

Aug-07-14  diagonalley: <once> here's one of the strugglers... i stared at this goddam thing for half an hour, but failed to consider the Q retreat :-(
Premium Chessgames Member
  agb2002: The material is identical.

Black threatens 14... gxh5, 14... fxe6 and 14... Qxe6.

White can improve the position of the queen with tempo by playing 14.Nc7+ Qxc7 15.Qe2+:

A) 15... Qe5 16.Qxe5+ Nxe5 17.Rd8#.

B) 15... Ne5 16.Qxe5+ wins (16... Qxe5 17.Rd8#).

C) 15... Be7 16.Qxe7#.

D) 15... Be4 16.Qxe4+ doesn't change the result.

Premium Chessgames Member
  SonOfSteel: What prevents black from playing 13... ♕xe6 ?
Premium Chessgames Member
  Once: Oops - e file, not f file.
Aug-07-14  gofer: Deflection. Give up one mate to create another...

<14 Nc7+ Qxc7>
<15 Qe2+! ...>

The problem for black is that there are two mates
on offer here, the queen smashing through any
blocking pieces on the e file to give mate on e7
and the back-up mate of Rd8# when Qc7 and Nc7
are forced to the e file to block Qe2's rampant

So I would recon that black resigns here...

15 ... Be7?
16 Qxe7#

15 ... Qe5
16 Qxe5+ Nxe5 (Be7? 17 Qxe7#)
17 Rd8#

15 ... Be4?
16 Qxe4+ ...

The only defense is ...

<15 ... Ne5>
<16 Qxe5+ ...>

<At which point Be7 loses quite quickly>

16 ... Be7
17 Qxh8+ Bf8
18 Bxb5+! axb5/Bc6/Nc6/Nc7 (Qc6 Rd8# or Qd7 Bxd7#)
19 Rhe1+ Qe7/Qe5
20 Rxe7#/Rxe5#

<The queen sacrifice survives a lot longer...>

<16 ... Qe7>
<17 Bxe7 ...>

17 ... Bxe7
18 Qxh8+ leads to the variation given above

17 ... Nd7
18 Rxd7 Bh6+
19 Kb1 Kxd7
20 Bxb5+ axb5
21 Rd1+ Kc8
22 Nxb5 mating

<17 ... Nc6>
<18 Qxh8 ...>

Pinning the bishop and creating the mating net seems
to be a simple win...

18 ... Nxe7?
19 Bxb5+ axb5
20 Nxb5

<18 ... Kxe7>
<19 Ne5+ ...>

click for larger view

White has some really nice combinations available, the one I like most is...

19 ... Ke8?
20 Nf6+ Ke7
21 Ng8+ Ke8
22 Bxb5 axb5
23 Rhe1+ Be7/Ne7
24 Nf6#



Premium Chessgames Member
  Once: <SonOfSteel: What prevents black from playing 13... Qxe6 ?>


click for larger view

The black queen and king are now on the same open file. So white has a chance to park a protected rook on e1 and pin the queen. This is the line that appealed to me in human mode:

14. Bc4 bxc4 15. Rhe1

click for larger view

There is no good move for black from here. 15...Ne5 allows 16. Rd8#. Or 15...Qxe1 16. Rxe1+ Be7 17. Rxe7 and black is losing pieces hand over fist.

Fritzie confirms. 14. Bxb5 is also playable (but not as strong).

Aug-07-14  morfishine: 14.Nc7+ Qxc7 15.Re1+ Ne5 16.Qd1 Nbc6 17.Nd5 Qd6 18.Nf6+


Aug-07-14  Nick46: Just like others, I saw Nc7 pretty quickly and then considered both Re1 and Qe2, but was too lazy to TROT off and get the chessboard and pieces to play the thing through, thus sacrificing the PREROGATIVE of notching up today's solution.
Aug-07-14  TheBish: N Pegoraro vs P Trotto, 2004

White to play (14.?) "Medium"

After banging my head against a brick wall for a couple of minutes trying to find a way to deflect the black queen (with moves like 14. Qe2) in order to deliver mate with Nc7, it dawned on me to reverse the move order -- Eureka! It seems obvious now, but as the saying goes, hindsight is 20-20.

14. Nc7+! Qxc7

So the trick is not to deflect the queen away from c7, but TO c7, and away from the e-file!

15. Qe2+ Ne5 (15...Qe5 16. Qxe5+ Nxe5 17. Rd8#) 16. Qxe5+! and Black should resign since he will either get mated (16...Qxe5 17. Rd8#) or lose the house and then get mated.

Aug-07-14  zb2cr: Missed this one! Arrrghhh!
Aug-07-14  kereru: "offramp: One should not take too many liberties in the Polugaevsky."

One probably shouldn't play the Polugaevsky, unless one happens to be Polugaevsky.

Aug-07-14  dfcx: black threatening 14...Gxh5 and Qxe6. White must act fast...

14.Nc7+ Qxc7 15.Qe2+
now black can't defend e5, e7 and d8 squares.
A. 15...Ne5 16. Qxe5+
A1. 16...Qxe5 17.Rd8#
A2. 16...Be7 17.Qxc7
B. 15...Be7 16. Qxe7#

Premium Chessgames Member
  doubledrooks: 14. Nc7+ forces 14...Qxc7, opening the king file for 15. Qe2+. Black is busted.
Premium Chessgames Member
  Penguincw: Wow. It was that simple. And here I am, spending all this time looking for ways to deflect the queen and play 1.Nc7# 1-0. :|
Aug-07-14  Castleinthesky: Thursday-my favorite Norse god gave me a jolt and I solved this one.
Premium Chessgames Member
  kevin86: Nice setup of Reti - Tartokower theme.
Premium Chessgames Member
  SonOfSteel: < Once:
14. ♗c4 bxc4 15. ♖he1...
There is no good move for black from here. 15...♘e5 allows 16. ♖d8#. Or 15...♕xe1 16. ♖xe1+ ♗e7 17. ♖xe7 and black is losing pieces hand over fist.>

What about:15...g6 16. ♖xe6+ fxg6 17.♕g4 ♔f7 ?

I don't have a chess engine to check, but it seems like black can try to obtain three pieces for the Queen.

Aug-07-14  tatarch: Good puzzle from a move earlier as well. Is there a decent response to 13.Ne6? I don't see it.
Premium Chessgames Member
  ketchuplover: How about 13...Qxe6 ?
Aug-07-14  MarkFinan:

click for larger view

Black does it all wrong from here! Should be playing 12..g6 kicking the queen away before taking the pawn. I'm about to check out Blacks rating because no top player should be taking *that* pawn in a classical game in this position!

Premium Chessgames Member
  FSR: I knew this had to be a Polugaevsky. 14.Nc7+! Qxc7 15.Qe2+ something-e5 16.Qxe5+ somethingxe5 (hanging the queen just delays the inevitable loss) 17.Rd8# is old hat.
Aug-07-14  MarkFinan: 1900 which still doesn't explain *that* move because I'm not 1900 and I could see it. I did look at 14.Nc7+ and I'd be lying if I said I solved it but I only scanned the position. Still easier than yesterday's though! ✌
Aug-07-14  Hiko Seijuro: Nice game from Nikola Pegoraro.
Aug-07-14  Cheapo by the Dozen: Ack. I made a very simple error. I thought the Ne5 interposition would be playable, forgetting that the knight would be undefended once White was through winning the black queen.
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