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Erwin L'Ami vs Eltaj Safarli
11th Essent Open (2007), Hoogeveen NED, rd 9, Oct-20
Gruenfeld Defense: Three Knights Variation. Petrosian System (D91)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
May-18-17  mel gibson: I didn't see this one -
the computer did but has a different following move:

26. Rc1
Nxe3 (26. .. Nxe3 (♘c4xe3 ♕d1-e2 ♗g7xd4 ♖c1-e1 ♗f5-g4 ♗g2-f3 ♕e7-f6 ♗f3xg4 ♘e3xg4 ♘b2-d1 ♕f6-d6 ♕e2-d2 c6-c5 ♕d2xa5 c5-c4 ♘d3-f4 ♗d4-c5 ♕a5-a4 h5-h4 ♔g1-g2 ♔g8-g7 ♕a4-c2 ♖f8-h8 ♕c2-c3+ ♘g4-f6) +2.41/20 139)

score for black +2.41 depth 20

May-18-17  morfishine: I like the demolition <26...Nxe3> 27.fxe3 Qxe3+ 28.Kh1 and now <28...Bxd4> netting a third pawn for the piece while ripping apart the White position

*****

May-18-17  et1: Got it but 27 Qe2 is very interesting
May-18-17  Walter Glattke: 27.Qe2 loses a pawn after 27.-Bxd3 28.Nxd3 Nf5 guards the queen or 28.Qd3 Nxg2
May-18-17  Iwer Sonsch: <Walter Glattke>
May-18-17
Premium Chessgames Member
  patzer2: For today's Thursday puzzle solution, I visualized the game line 26...Nxe3 fxe3 Qxe3+ 28. Kh1 Bxd4 and figured with three pawns for the piece, I'd play this even in blitz.

However, I also quickly visualized 29. Rxc6 and wasn't quite sure how to continue afterwards.

Black's 29...a4 (-4.29 @ 32 depth, Stockfish 8) works out just fine, but slightly stronger according to the computers is the direct and forcing 29...Bxb2 30. Nxb2 Rb8 (-4.99 @ 32 depth, Stockfish 8)


click for larger view

with a decisive pin on the knight due to the threat of 31...Rb1 with a pin on the Queen.

If White plays 31. Nd3 (diagram below),


click for larger view

then 31...d4! (-4.41 @ 20 depth, Deep Fritz 15) with the strong threat of 32...Bxd3 is much better than 31...Bxd3? 32. Rc3 (diagram below)


click for larger view

32...Be2! 33. Rxe3 Bxd1 (-1.49 @ 23 depth, Deep Fritz 15) with drawing chances for White.

May-18-17  saturn2: I stopped playing 5 Lg5. Black always got a good game. I switched to 5 cxd Nxd5 6 Bd2 like in Petrosian vs Fischer, 1970
May-18-17  Walter Glattke: Al wazir: 32.Rb3 does not hold: 32.-Bxf1
33.Rxd3 Bxg2+ 34.Kxg2 Bxe3 1 piece.
May-18-17
Premium Chessgames Member
  patzer2: Black might have a deep, endgame winning option with 26...Nxb2 27.Nxb2 Qa3 to (diagram below)


click for larger view

28.Qd2 Qxa2 to (-1.22 @ 35 depth, Stockfish 8) when play might continue 29.Nc4 Qxd2 30.Nxd2 Rc8 31.Rc5 a4 32.Ra5 Bc2 33.Rc5 Bd3 34.Bxd5 Bf8 35.Rc3 Bf5 36.Rxc6 Rxc6 37.Bxc6 a3 38.f3 Bb4 39.Nb3 Bd3 40.Bd5 a2 41.Kf2 Bc3 42.g4 hxg4 43.fxg4 g5 44.Na1 Bb1 45.Nb3 Kg7 46.Bc4 Bc2 47.Na1 Bxa1 48.Bxa2 Be4 49.h3 f5 50.Kg3 Bc3 51.gxf5 Bxf5 52.Bd5 Be1+ 53.Kg2 Bd2 54.h4 gxh4 55.Kf2 Kg6 56.Ba8 h3 57.Ke2 Bb4 58.Kf2 Kh5 59.Bh1 Kh4 60.Bf3 Bd7 61.Bd5 Bg4 62.Bh1 Bd6 63.d5 Bg3+ 64.Kf1 Be5 (Mate in 23 @ 52 depth, Stockfish 8)

May-18-17
Premium Chessgames Member
  benveniste: <al wazir> ♕f1 gets met by ♗xb2, again leading to white being down at least a piece and a pawn.

My computer prefers ♕f3, but Black still ends up at least two pawns.

May-18-17  catlover: Saw the game continuation, but was discouraged by 29. Rxc6 and just didn't see how to continue from there.

So I explored 26. Rc1 Nxb2 27. Nxb2 Qa3 28. Na4 Rb8 29. Nc3 Rb2. Black seems to have pressure but no clear breakthrough.

I found this a tricky puzzle.

May-18-17
Premium Chessgames Member
  patzer2: White's game takes a turn for the worse with the awkward 25. Nab2? to , potentially allowing an immediate 25...Nxe3 (-1.42 @ 33 depth, Stockfish 8).

Instead, White can hold it level and avoid the strong Knight sacrifice on e3 with 25. Qc1 = (0.00 @ 28 depth, stockfish 8.)

May-18-17  Iwer Sonsch: <patzer2> A threat is more powerful than its execution. This way, Black let White make one more bad move.
May-18-17
Premium Chessgames Member
  al wazir: <Walter Glattke: 32.Rb3 does not hold>.

Let me try again one more time: <29. Qf1 Rb8 30. Rc2 Rxb2 31. Rxb2 Bxd3> (31...Bxb2 32. Nxb2) 32. Rb8+ Kg7 33. Qd1 Be2 34. Qe1 Bc3 35. Qb1.

<benveniste: ♕f1 gets met by ♗xb2, again leading to white being down at least a piece and a pawn.> I don't see that.

After 29. Qf1 Bxb2 30. Nxb2 Rb8 31. Re1 Qd4 32. Nd1 Rb1 33. Bb3, black's attack has dissipated.

May-18-17  ChessHigherCat: <Iwer Sonsch: <ChessHigherCat> You're right about the trickiness of 27.Qe2(!), but Black's best response to that is actually 27...Bxd4! (-2.37 @depth 27) - and the Knight is immune due to the rook on c1 (28.fxe3? Qxe3+ 29.Qxe3 Bxe3+ and Bxc1). Black will follow up with Bg4 to apply even more pressure.

Your line wins one pawn.>

Hi Iwer, I thought about 27 Qe2 Bxd4 but what about 28. Re1? Now if Bxd3 29. Nxd3 Nf5 30. Qxe2 Ne2 31. Re2, although it's true black has snarfed up some juicy center pawns.

May-18-17  Iwer Sonsch: <<ChessHigherCat> I thought about 27.Qe2 Bxd4 but what about 28.Re1 ?>

You keep finding moves that leave Black with a realistic chance to blunder. Nevertheless, after 28...Bg4! 29.Qd2 (most tricky) Qa3! 30.fxe3 Bc3 and 31...Bxe1 32.Nxe1, Black maintains the two pawn advantage he obtained with Nxe3! and Bxd4.

28...Bxd3? draws.

May-18-17  Walter Glattke: 35.-Qf2 36.Rb7!? or others, but then36.-Bf3 37.Qf1 Bxg2+ 38.Qxg2 Qe1+ 39.Qg1 Qxg1# interesting, finding something better for move 36!
May-18-17  Walter Glattke: oh, even Qxf1#
May-18-17
Premium Chessgames Member
  agb2002: Black has the bishop pair for a bishop and a knight.

White threatens Nxc4 and the rook x-rays the c-pawn.

The knight on b2 lacks mobility. This suggests 26... Nxb2 27.Nxb2 Qa3:

A) 28.Qb3 Qxb3 29.axb3 Rb8

A.1) 30.Rxc6 Rxb3

A.1.a) 31.Na4 Rb1+ 32.Bf1 Bh3 and mate in two.

A.1.b) 31.Nd1 Rb1 32.Bf3 Be4 33.Bxe4 Rxd1+ 34.Kg2 dxe4 35.Ra6 Bf8 36.Rxa5 Bb4 37.Re5 f5 and Black has some advantage, [b vs 2P] and the attacking chances against the white pawns.

A.2) 30.Rc3 c5

A.2.a) 31.Bxd5 cxd4

A.2.a.i) 32.exd4 Bxd4 33.Rc7 Bxb2 34.Rxf7 Kh8 - + [b vs 2P].

A.2.a.ii) 32.Rc7 dxe3 33.Rxf7 exf2+ 34.Kxf2 Kh8 35.Nd1 (35.Nc4 Rxb3 36.Nxa5? Rb5 wins a piece) 35... Rd8 36.Ne3 Bd4 37.Bc6 Rd6 followed by Re6 seems to win a piece.

A.2.b) 31.Na4 cxd4 seems to win at least a pawn.

B) 28.Qd2 Qxa2 looks very good for Black. For example, 29.Rxc6 Bb8 30.Nc4 Qa8+ wins the knight.

C) 28.Qe2 Qxa2 as B.

-----

The first idea that came to mind was 26... Nxe3 27.fxe3 (27.Qe2 Bxd3 to free f5 for the knight) 27... Qxe3+ 28.Kh1 Bxd4 29.Rxc6 and I had the impression that Black might not have enough compensation.

May-18-17
Premium Chessgames Member
  agb2002: Very instructive.
May-18-17  Walter Glattke: 26.-Nxb2 27.Nb2 Qa3 28.Na4 weaker than
26.-Nxe3, my meaning
May-18-17
Premium Chessgames Member
  benveniste: <al wazir: After 29. Qf1 Bxb2 30. Nxb2 Rb8 31. Re1 Qd4 32. Nd1 Rb1 33. Bb3, black's attack has dissipated.>

On this line, Black plays 30. ♕a3 instead of ♖b8 and the Knight falls in all lines. Stockfish dithers between 31. ♖xc6, 31. ♖c1, and 31. ♘c4, all at around (-4.5).

May-18-17  dufferps2: I really can't understand 29.Rc6
That seemed the time for black to push for commitment - something like 29.Qe1.
May-18-17  messachess: Well, the impression without going into it much is that L'Ami did no play this well. So it's not really forced. That would mean that it's not really a very good problem.
May-19-17
Premium Chessgames Member
  al wazir: <benveniste: On this line, Black plays 30. ♕a3>. Yes, the ♘ is a goner. Thanks.
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