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Petr Haba vs Predrag Nikolic
Bundesliga (2004/05), Solingen GER, rd 14, Apr-09
Spanish Game: Closed Variations. Zaitsev System (C92)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Sep-03-10  wals: Black blew it, big time,

(+7.58):27...Qf5.
(Much better was:-

Analysis by Rybka 4 x64: depth 24:

1. (1.22): 27...Nxg4 28.Qe8+[] Qxe8[] 29.Rxe8+ Bf8 30.hxg4[] Kg7 31.Be3[] f6 32.Bb6[] Rxc3 33.Rxd8 Ra3[] 34.Bb1 Ra1 35.Rd7+ Kg8 )

and not content with that, proceeded,

(+8.93):28...Nb7

(+#9) :31...Rd8

and cried quits move 32.

Sep-03-10
Premium Chessgames Member
  patzer2: As many were thinking of relaxing and celebrating the labor day weekend in the USA, we were challenged to work hard to find the brilliant Queen sham sacrifice 28. Qxf6!! as the solution for today's Friday puzzle.

I've put the combination 28. Qxf6!! in my combined operations collection because it incorporates the Queen (sham) sacrifice, deflection, decoy, pinning, trapped Queen and mate threat tactics to give White an overpowering advantage.

The analysis by <Once> is not only entertaining, but also highly accurate in depicting White's strongest continuation.

Unfortunately, I went for the tempting but inferior 28. Qe8+!? which fizzles out to a draw.

Here's a move-by-move look with Fritz 10:

<28. Qxf6!!> The Queen sham sacrifice is by far White's strongest winning move.

A winning alternative is 28. Qe7! h5 29. Re5! hxg4 30. Rxf5 .

Interesting but insufficient is 28. Qe8+!? Nxe8 29. Rxe8+ Bf8 30. Nh6+ Kg7 31. Nxf5+ gxf5 32. Be3! f6 33. Bb6! Rxc3 34. Rxd8 Ra3 35. Rd7+ Kg6 36. Ra7 Rxa7 37. Bxa7 Bxb4 38. Kf1 Bd6 39. Ke2 when White's slight advantage is good for no more than a draw.

<28... Nb7>

If 28... Qxf6 29. Re8+! Bf8 30. Nxf6+ Kg7 31. Ng8! (see <Once>'s post for the diagram for this stunning decoy tactical shot) 31...h5 (not 31... Kxg8? 32. Bh6 with a mating attack) 32. Bh6+ Kxg8 33. Rxf8+ Kh7 34. Bg5 with a winning pin.

If 28...Bxf6, it's mate-in-two with 29. Re8+ Kg7 30. Bh6#.

<29. Qe7 h5 30. Nh6+ Bxh6 31. Bxh6 Rd8>

If 31... Kh7, then 32. Bb1 traps and wins the Black Queen.

<32. Re5!> 1-0 The final deflection forces White to surrender the Queen or submit to a quick mate (e.g. 32...Qd7 33. Qf6 Qd6 34. Qg7#)

Sep-03-10  echever7: It seems quite easy 28Qxf6 (is not a 'sacrifice': 28....Bxf6 29.Re8 Kg7 32.Bh6#) so 28...Qxf6 29.Re8 Bf8 30.Kxf6 Kg7 and now I like 31.Ng8 :) :) Threatening Bh6+ and Rf8# If 31...Kxg8 then 32.Bh6-Ne6 33.dxe6-Rxe8 34.exf7+ 1-0 (or simply 33.Rxc8)

"Unfortunately" for the mat combination there's 30...h6 (h5) Then wins the simple 32.Bxh6 Kxg8 33.Rxf8 Kh7 34.Bg5 (threatening Bf6) and that's all. If don wanna mat then there's no escape for the black knight.

Sep-03-10  WhiteRook48: i have 28 nh6+
28...kf8 29 Qe7#
28...kh8 29 nxf5
i failed however 28... bxh6 actually refutes everything.... AAARGH
Sep-03-10  echever7: Well, after 28.Qxf6 black can play not 28...Qxf6 but 28...Nb7 hmmmm in that case seems simple 29.Qxf5-gxf5 30.Nh6 Kf8 31.Nxf5-Bf6 (31...Bxc3 32.Rc1 1-0)32.Bh6 Kg8 33.d6 and d-pawn is unstoppable Obviously black can change that black-squared bishop (Bxh6) but being three pawns down and pasive, the blacks' position is hopeless.
Sep-03-10
Premium Chessgames Member
  patzer2: <echever7> Glad you found 28. Qxf6!! easy. Now that I'm familiar with the pattern, and not fixated on 28. Qe8+, the solution doesn't seem so difficult.

You're right it's not a real "sacrifice." However, I was employing the definition of a sham (temporary) sacrifice as used by Spielmann in his classic work "The Art of Sacrifice in Chess."

Sep-04-10  M.Hassan: "difficult"- White to move 28.?
Black is ahead by a Knight vs 2 pawns

somehow I felt that Queen sacrifice pays out in this game because the attack can be started through e8 which is now guarded by Black Knight. so: 28.Qxf6
If 28......Bxf6
29.Re8+ Kg7
30.Bh6#

Therefore, Black must take the Q with Q i.e
28.........Qxf6
29.Re8+ Bf8
30.Nxf6+ Kg7
31.Ng4 f5 (making room for King
escape when checked)
32.Bh6+ Kf7
33.Rxf8+ Ke7
34.Nf6

I don't know if the game continued beyond this point but I think it is the time for Black to resign due to heavy losses Time to check
----------------
Not quite my way!!!

Sep-04-10  gofer: I looked at 28 Nxf6+ Bxf6 29 Qe8+ Kg7 30 d6! Bc6 and then became stuck, so went back to the drawing board.

28 Qxf6! ...

28 ... Bxf6 29 Re8+ Kg7 30 Bh6#
28 ... Qxf6 29 Re8+ Bf8 30 Nxf6+ Kg7 31 Ng4 winning

If black refuses the exchange then it has just lost a piece for nothing. Now as it was a piece up this may be the best option, but it still isn't great. Black needs a defense and nothing great comes to mind. White is two pawns up, so really refusing the exchange is close to resigning anyway...

Time to check...

Mar-19-21  mel gibson: I thought 28. NxN+ but I was wrong.

Stockfish 13 agrees with the text:

28. Qxf6

(28. Qxf6 (♕e5xf6 ♕f5xf6 ♖e1-e8+ ♗g7-f8 ♘g4xf6+ ♔g8-g7 ♘f6-g4 h7-h5 ♗d2-h6+ ♔g7-h7 ♗h6xf8 h5xg4 ♗f8-c5 ♗a8-b7 h3xg4 ♘d8-e6 d5xe6 ♖c8xe8 e6xf7 ♖e8-a8 f7-f8♕ ♖a8xf8 ♗c5xf8 g6-g5 f2-f3 ♔h7-g6 ♗f8-e7 ♗b7-c8 ♔g1-f2 ♗c8-b7 ♔f2-e3 ♔g6-g7 ♔e3-d4 ♗b7-c6 ♔d4-c5 ♗c6-e8 ♗a2-e6 ♔g7-g6 ♗e6-f5+ ♔g6-g7 ♗e7xg5 ♔g7-g8 ♗f5-d3 ♔g8-f7 ♗d3xb5 ♗e8xb5 ♔c5xb5 ♔f7-e6 ♔b5-c4 ♔e6-d6) +10.64/38 81)

score for White +10.64 depth 38

Mar-19-21
Premium Chessgames Member
  al wazir: 28. Qxf6 isn't hard to find, because it's clear that black can't recapture the ♕. After that the continuation is less obvious.
Mar-19-21  Walter Glattke: A) 28.Qe8+ Nxe8 29.Rxe8+ Bf8 30.Nh6+ Kg7 31.Nxf6+ gxf6 A2) 30.Bh6 Ne6 31.Rxc8 f6 32.dxe6 Bd5 33.Rxf8# B) 28.Nxf6+ Qxf6 29.Qe8+ Bf8 30.Bh6 Ne6 31.dxe6 Rxe8 32.exf7+ Qxf7 33.Rxe8 Bd5 34.Rxf8+ Qxf8 35.Bxd5+ Kh8 36.Bxf8 2 Bishops C) 28.Qxf6 Bxf6 29.Re8+ Kg7 30.Bh6# C2) 28.-Qxf6 29.Re8+ Bf8 30.Bh6 Qg7 (Ne6? Nxf6+ Kh8 Rxf8#) 31.Nf6+ Kh8 C3) 30.Nxf6+ Kg7 31.Nd7 Bd6 32.Bf6+ Kh6 33.g4 (threatens Rxh7) It seems, all three moves will win.
Mar-19-21  mel gibson: The security certificate for this site has expired. I had to make an exception with Firefox to get in.
Mar-19-21  Walter Glattke: My certificat is off, too.
Mar-19-21  Brenin: <mel gibson>: Likewise with Safari.
Mar-19-21  Brenin: Why 27 ... Qf5? After 27 ... Nxg4, does White have anything better than 28 Qe8+ Qxe8 29 Rxe8+ Bf8 30 hxg4 Kg7 31 Be3, with 2P and plenty of initiative for the piece?
Mar-19-21  Whitehat1963: I wasn’t in the same area code, never mind the ballpark.
Mar-19-21  Lambda: Quite happy to call this one solved once you verify it's wining a piece and we'll be two pawns up whilst still having the initiative, no need to figure out how that initiative goes to know it's the right move.
Mar-19-21  Refused: 28.Qxf6 black can't capture on f6, because he'd get killed with 29.Re8+ +-

anyway

28.Qxf6 Nb7 virtually forced. 29.Qe7 h5 (white was threatening 30.Qxe8 Rxe8 31.Rxe8+ Bf8 32.Nh6 collecting an exchange) 32.Nh6+ Bxh6 33.Bxh6 +-

It's just bleak. The d5 passer is a monster, f7 is weak and the queen can be driven of the file easily with Re5. The lack of any active prospects makes the black position especially bleak.

Mar-19-21
Premium Chessgames Member
  chrisowen: Doggies key i dollop Qxf6 goodness accommodate motive alright guv doggies key i jason junior crams plotter dog god kea quagmire blink it whiffs yue itz very its nark paris key clams within key lode it zoom i key oe qf5 garcon a bluff frazzled it ok key dog ng4 honour a chuffer muffler key i ah alright tot ups either abler finish garcon it was harp it lit ton Qxf6 etc;
Mar-19-21
Premium Chessgames Member
  drollere: i didn't get the game line. i tried 28. Qe8+ Nxe8, 29. Rxe8+ Bf8, 30. Bh6 Ne6, 31. Rxc8 Bxd5, 32. Bxd5 and black cannot recapture the B
Mar-19-21
Premium Chessgames Member
  agb2002: White has two pawns for a knight.

Black threatens Qxe5.

Black's weak back rank suggests Nxf6+, Qe8+ and Qxf6.

The alternative 28.Nxf6+ Bxf6 doesn't seem to achieve much and 28.Qe8+ Nxe8 (28... Bf8 29.Qxf8+ Kxf8 30.Bh6+ Kg8 31.Nxf6+ and 32.Re8#) 29.Rxe8+ Bf8 30.Bh6 Nb7 looks lost.

In the case of 28.Qxf6:

A) 28... Bxf6 29.Re8+ Kg7 30.Bh6#.

B) 28... Qxf6 29.Re8+ Bf8 30.Nxf6+ Kg7 (30... Kh8 31.Rxf8+ Kg7 32.Nd7 wins decisive material) 31.Ng4

B.1) 31... f5 32.Bh6+ Kf7 33.Rxf8+ Ke7 34.Ne5 wins decisive material.

B.2) 31... h5 32.Bh6+ Kh7 33.Bxf8 hxg4 34.Be7 Rc7 35.Rxd8 Bxd5 (or 35... Rxe7 36.Rxa8) 36.Bxd5 wins decisive material.

B.3) 31... g5 32.Bxg5 wins decisive material.

C) 28... Nb7 29.Qxf5 gxf5 30.Nh6+ Bxh6 (30... Kf8 31.Nxf5 Bxc3? 32.Rc1) 31.Bxh6 wins two pawns (31... Rxc3 32.Re8#).

Mar-19-21
Premium Chessgames Member
  Breunor: I usually play the closed run Lopez vs.e4 as black. Although it doesn’t lead to a big negative evaluation by Stockfish (it is a 0.66 reduction, not insignificant) I think black started to go wrong with 17 Na5. After 19 b4 Nb7, that knight is really out of the game. Indeed, the bad placement of this knight leads to a lot of a black’s problems.

Black needs to say 17 Ne7.

Dealing with this knight is an issue in the closed Ruy; I usually play Breyer.

Mar-19-21  The17thPawn: <drollere> - Black doesn"t have to take the bishop. 32..., Ng7 removes the mate threat and opens a double attack on rook and bishop. White can save both pieces, but the attack is stymied and a simple win has become much more complex.
Mar-19-21  Brenin: <drollere>, <The17thPawn>: An interesting line: after 28 Qe8+ Nxe8, 29 Rxe8+ Bf8 30 Bh6 Ne6 31 Rxc8 Bxd5 32 Bxd5 Ng7 33 Rd8, Black is in zugzwang! Apart from the useless spite check, the only move that doesn't lose immediately is 33 ... g5, then the waiting move 34 Kh2 forces 34 ... Qg6 (what else is there?) and 35 Ne5 wins.
Mar-19-21  The17thPawn: <Brenin> - Nicely spotted! The best I could do was to lose significant material with black ending down an exchange and 3 pawns. It's not mate but black can only kick and scream at that point. Seems my willingness to fight out-strips my calculating ability once again.
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