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Xie Jun vs Lajos Portisch
Women-Veterans (1995), Prague CZE, rd 8, Jul-??
Sicilian Defense: Paulsen Variation (B46)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
Jun-07-19
Premium Chessgames Member
  andrewjsacks: Impressive and study-like combination.
Jun-07-19  Cheapo by the Dozen: The basic idea is easy to find. But I overlooked the Ba7 defense.

(The Ne2 defense fails more simply, to ... Bc5).

Jun-07-19
Premium Chessgames Member
  al wazir: <Cheapo by the Dozen: The basic idea is easy to find.> I didn't come close to finding it.

<The Ne2 defense fails more simply, to ... Bc5.>

Does it? 26...Qf5 27. Ne2 Bc5 28. Bf4!

Now what?

Jun-07-19
Premium Chessgames Member
  An Englishman: Good Evening: Does 26...Qf5; 27.Ne2,Qf1+; 28.Ng1,Bc5 work? This was a tough little puzzle. Had the most trouble finding the refutation of 28.Qe3 instead of 28.Qe1. Fortunately for Black, he had more pins than a wrestling tournament.
Jun-07-19
Premium Chessgames Member
  agb2002: Black has a bishop for a rook.

After 26... Qf5 the white queen looks overburdened with the defense of the back rank and the rook:

A) 27.Ne2 Qf1+ 28.Ng1 Bc5 wins.

B) 27.Qe1 Qxh3 wins decisive material (28.Qxe7 Qxg2#).

C) 27.Ba7 Bd6 28.Qe1 Qxh3 wins decisive material (29.Qxe1+ Kg7 with the triple threat Qxg2#, Qxh2# and Bxe8).

D) 27.Bf4 Qxf4 28.Qxf4 gxf4 - + [2b vs R].

Jun-07-19
Premium Chessgames Member
  Honza Cervenka: 26.Bb8 was a mistake. White should have played 26.Kg1.
Jun-07-19  clement41: Should not be overlooked 27 Ba7 Bd6 28 Qe3 now that the queen sits on the Ba7ís diagonal, this means she will have to interpose 28...Qf1+ 29 Qg1 Bxg2#
Jun-07-19
Premium Chessgames Member
  malt: Best is 26...Qf5 27.Bf4

(27.Ne2 Qf1+ 28.Ng1 Bc5 29.d4 B:d4 )
(27.Qe1 Q:h3 28.Ne4 Qe6 )
(27.Kg1 Bc5+ 28.Qe3 B:e3 29.R:e3 )

27...Q:f4

Jun-07-19
Premium Chessgames Member
  watwinc: <An Englishman> What am I missing? 28 Qe3 Qf1 ch 29 Qg1 Bxg2 mate
Jun-07-19  TheaN: Ah, no. Missed the Ba7 defense entirely so I guess that's not a solve.

<On the other hand>, what are Black's alternatives on move 26? Anyone would play Qf5, then see Ba7 played and take some more time to find Bd6 which is take-out-the-defender at its finest.

Bit annoyed I missed it, but would have won this game regardless :>

Jun-07-19  mel gibson: I saw the first move-
threatening a mate, as the only forcing move.
I couldn't see the rest & Stockfish
saw the first move too
but followed a different line:

26... Qf5

(26. .. Qf5 (♕d7-f5 ♗b8-f4 ♘e8-g7 ♘c3-e2 ♗e7-c5 d3-d4 g5xf4 ♕g3-d3 ♗c6-e4 ♕d3-b3+ ♗e4-d5 ♕b3-d3 ♕f5-g5 ♖h3-f3 ♗d5xf3 ♕d3xf3 ♗c5-f8 ♘e2-g1 ♕g5-f5 ♕f3-a8 ♘g7-e6 ♕a8xa6 ♘e6xd4 a3-a4 b5xa4 ♕a6xa4 ♘d4-e6 h2-h3 ♘e6-g5 ♕a4-d1 ♘g5-e4 ♕d1-g4+ ♕f5xg4 h3xg4 ♘e4-f2+ ♔h1-h2 ♗f8-d6 g2-g3 ♘f2xg4+ ♔h2-g2 f4xg3 ♘g1-e2 ♔g8-f7 ♘e2xg3 ♔f7-e6 ♘g3-e4 ♗d6-e7 ♘e4-g3 ♘g4-e5 ♔g2-f2 ♔e6-d5) +5.77/40 161)

score for Black +5.77 depth 40

Jun-07-19  Nosnibor: This game illustrates the power of the bishops in such positions.
Jun-07-19  cunctatorg: The game is also a display of Lajos Portisch's chess strength!!
Jun-07-19
Premium Chessgames Member
  Check It Out: I spotted 29...Qf5 as my choice move but got lazy about finding white's defense.
Jun-07-19
Premium Chessgames Member
  Jimfromprovidence: After 26...Qf5 I also missed 27 Ba7. I thought of 27 Qe3 for a second but that loses spectacularly to 27...Qf1+ 28 Qg1 Bxg2#


click for larger view

FWIW, I finally settled (after 26...Qf5) on the same line as <agb2002>'s <D) 27.Bf4 Qxf4 28.Qxf4 gxf4 - + [2b vs R]>

Stockfish says, however, it is better to play 27...Ng7, below, first, protecting the king and then taking the bishop with the g pawn instead of the queen.


click for larger view

The analysis of this line is not easy to follow IMO.

Jun-07-19  Cheapo by the Dozen: <al wazir>,

I must confess to overlooking that defense too. But Black can just step out of the pin or, as the engine suggests, interpose with 28 ... Ng7.

What does White do then to save the bishop while also defending against 29... Qf1+/30... Qxg1++? In particular, 29 Be3 doesn't work, since White's overloaded queen can't actually defend e3, because she can't afford to undefend g2 against the threat 29...Qf1+/30...Qg2++.

Jun-07-19  cormier:


click for larger view

Analysis by Houdini 4 d 22 dpa done

<1. = / + (-0.28): 21.Rf1> Bd6 22.Bf3 Qc5 23.Re1 Bxf3 24.gxf3 Bc7 25.Re2 Bb6 26.Kg2 h6 27.Ne4 Qc4 28.Qe1 Qe6 29.Bc3 Qc6 30.Rd2 Qg6+ 31.Qg3 Rxd2+ 32.Bxd2 Qe6 33.Bc3 f5 34.Qh3 Bc7 35.Bd4

2. = / + (-0.36): 21.Rf2 Bd6 22.Rf1 g6 23.Bf3 Bxf3 24.gxf3 Bxe5 25.Qxe5 Qc7 26.Qxc7 Nxc7 27.Kg2 Kg7 28.Rd1 Rxd1 29.Nxd1 Kf6 30.Kg3 Ne6 31.Ne3 h5 32.f4 Nd4 33.c3 Nb3 34.c4 Ke6 35.cxb5 axb5

Jun-07-19  cormier:


click for larger view

Analysis by Houdini 4 d 22 dpa done

1. = (0.00): 18.f5 Rxd1 19.Nxd1 Qd7 20.Bd3 Nh5 21.Qh3 g6 22.Be2 Nf6 23.fxg6 fxg6 24.Nf2 Ne4 25.Nd3 Rxf1+ 26.Bxf1 Nc5 27.Qh6 Bd6 28.Qf4 Nxd3 29.Bxd3 Bxe5 30.Qxe5 Qd5 31.Qb8+ Kg7 32.Qc7+ Kf6 33.Qf4+ Kg7 34.Qc7+ Kf6

2. = (-0.06): 18.h3 g6 19.Bf3 Qb7 20.Kh2 Bxf3 21.Rxd8 Rxd8 22.Qxf3 Qxf3 23.Rxf3 h5 24.Rd3 Rxd3 25.cxd3 Nd7 26.Kg3 f6 27.Bd4 Kf7 28.Kf3 Nc5 29.Bxc5 Bxc5 30.Ne4 Bd4 31.b4 e5 32.Nc5 exf4 33.Kxf4

Jun-07-19
Premium Chessgames Member
  patzer2: For today's Friday solution, 26...Qf5! exploits the over-worked Queen on g3, the pinned pawn on g2, and the surprisingly under-protected Rook on h3.

The move 26...Qf5! creates three threats for the over-worked Queen and under-protected Rook:

27...Qf1#

27. Qe1 Qxh3 -+

27. Qe3 Qf1+ 28. Qg1 Bxg2#

White's reply 27. Ba7 appears to relieve the overworked Queen and solve White's problems as 27...Qf1+ can be met with 28. Bg1 =.

However, 27. Ba7 is insufficient as Black's reply 27...Bd6! -+ forces the White Queen to give up the protection of the Rook and surrender decisive material after 27. Ba7 Bd6! 28. Qf2 Qxh3 -+ (-9.24 @ 37 ply, Stockfish 10).

P.S.: So where did White go wrong in this Taimanov (B46) sicilian game? White's game takes a turn for the worse after 18. Rxd8?! Rxd8 ⩱, conceding the open d-file and retaining a weak isolated pawn.

Instead, 18. f5 exf5 19. Rxf5 Rxd1+ 20. Nxd1 = liquidates the isolated pawn, doesn't concede the open file and keeps the game level.

Earlier, instead of 7. 0-0 I prefer 7. Be3 ⩲ to = for rapid flexible development. An interesting example of play with 7. Be3 is White's win in Svidler vs Lautier, 2004

Jun-08-19
Premium Chessgames Member
  sfm: <mel gibson: Stockfish
26.-,Qf5 27.Bf4>

27.Bf4!!
Nobody seems to have thought of this, the toughest defense.

Offering to give back a piece when you are up the exchange, means that you are only behind with a rook against two pieces.

There is still lots of fight left.

Jun-08-19
Premium Chessgames Member
  An Englishman: Good Evening: <watwinc>, you didn't miss anything. Also found that line--eventually--but it required a lot of time.
Jun-08-19  mel gibson: < sfm: <mel gibson: Stockfish 26.-,Qf5 27.Bf4>
27.Bf4!!
Nobody seems to have thought of this, the toughest defense.

Offering to give back a piece when you are up the exchange, means that you are only behind with a rook against two pieces.

There is still lots of fight left.>

Thanks,
at least someone reads my posts.

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