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Artyom Timofeev vs Peter Svidler
Russian Superfinals (2008), Moscow RUS, rd 9, Oct-13
Nimzo-Indian Defense: Panov Attack. Main Line (E54)  ·  1-0
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 3 ·  Later Kibitzing>
Jun-02-11  SamAtoms1980: If I could have sat in White's seat at the board on move 18, would I have been required by Svidler to show more than Timofeev did?
Jun-02-11
Premium Chessgames Member
  agb2002: From a QG game, I think.

White has the bishop pair for a bishop and a knight.

Black threatens the pawns on d4 and g2, and to improve the defense of the king with ... Be4.

White can attack the black king with all his pieces and only the knight and a couple of pawns defend. This would justify the elimination of the knight for a bishop and the sacrifice of up two pieces. Therefore, 18.Bxf6:

A) 18... gxf6 19.Rxh7+ Kxh7 (19... Kg8 20.Qh3 followed by 21.Rh8+ Kg7 22.Qh6#) 20.Qh3+

A.1) 20... Kg7(8) 21.Qg4+

A.1.a) 21... Kh7 22.Re3

A.1.a.i) 22... Bxg2 23.Rg3 Rg8 24.Qh4#.

A.1.a.ii) 22... Bf3 23.Rxf3 (23.Qh4+ Kg7 24.d5 Rxd5 25.Rxf3 Rg5) Qxf3 24.Qxf3 (24.gxf3 Rg8) Rxd4 25.g3 + - [Q+B vs 2R] (25... Rxc4 26.Qd3+).

A.1.b) 21... Kh8 22.Re3

A.1.b.i) 22... Bxg2 is similar to A.1.a.i.

A.1.b.ii) 22... Bf3 is similar to A.1.a.ii.

A.1.a.iii) 22... Be4 23.Rh3+ Bh7 24.Bd3 f5 25.Qh5 Kg7 26.Qh6+ Kg(h)8 27.Qxh7#.

A.1.c) 22... Kh6 is similar to A.1.a.

A.2) 20... Kg6 21.Qg4+ Kh6(7) 22.Re3 is similar to A.1.a.

B) 18... Bxg2 19.Axg7+

B.1) 19... Kxg7 20.Rg3+ Kh8 21.Rxg2 + - [B].

B.2) 19... Kg8 20.Bf6 + -.

Jun-02-11  sevenseaman: 'Papantoniou Combination'

Papantoniou - Koutilin, Athens 1936.


click for larger view

w in 5

Keep your POTD thinking cap on. First move, the key is bit hard to find but thereafter these are practically forced.

Jun-02-11  IRONCASTLEVINAY: I found it quickly because i just played on same theme few hours ago.
Jun-02-11
Premium Chessgames Member
  gofer: I think this may be a case of using black's pawns to block in its own king.

<18 Bxf6 ...>

18 ... Bxg2 19 Bxg7+ winning

<18 ... gxf6>

Now this is the interesting bit, does 18 Rxh7+ work? My gut tells me that the queen can marshal the king into a position where black either has to give up a lot of material or get mated, but white has to be very careful! If black manages to play Kf8 and Ke7 then we may have lost a rook for nothing! So, importantly, the king must be kept away from the g file!

<19 Rxh7+ Kxh7>
<20 Qh3+ Kg7>
<21 Qg4+ Kh7>
<22 Re3 ...>

22 ... Bxg2 23 Qh4+ Kg6 24 Rg3+ Kf5 25 Qg4#

<22 ... Bf3!>
<23 Rxf3 Qxf3!>
<24 Qxf3 ...>

Black is losing. Time to check...

Jun-02-11  JuliusDS: <Sevenseaman> Qe6?
Jun-02-11  Muztang: @ sevenseaman :

What if 1.Qe6 Qxh2? Is it still mate in 5?

Jun-02-11  tacticalmonster: 18 Bxf6 gxf6 19 Rxh7+ Kxh7 20 Qh3+ Kg7 21 Qg4+ Kh8 22 Re3 Be4 23 Rh3+ Bh7 24 Bd3 f5 25 Qh5 Kg7 26 Qxh7+ Kf6 27 Qh4+ Kg6 28 Rg3#
Jun-02-11
Premium Chessgames Member
  gofer: <Sevenseaman>

1 Qe6 ...

1 ... Qxh2+ 2 Kxh2 Bxd6+ 3 Qxd6 winning, but not mate in 5!

1 ... Ng6 2 Nxg6+ hxg6 3 Rh3#

1 ... Nxe6 2 Ng6+ hxg6 (Kg8 Bxe6#) 3 Rh3+ Kg8 4 Bxe6+ Kf8 5 Rh8#

Jun-02-11
Premium Chessgames Member
  CHESSTTCAMPS: In this middlegame attacking position, white is leading by a minor exchange and a few tempos that have put a lifted attacking rook on h3. The presence of the majors on the 3rd rank makes it pretty obvious how white's attack must proceed: remove black's only useful kingside defender and smash through on the g and h-files:

18.Bxf6 gf (Bxg2 19.Bxg7+ Kxg8 20.Rg3+ Kh8 21.Rxg2 Rxd4 22.Qc3 e5 23.Rxe5 wins) 19.Rxh7+! Kxh7 (19... Kg8 20.Qg3+ is no different) 20.Qh3+ Kg6/g7 21.Qg4+ Kh6 22.Re3 (the 2nd rook lift decides) Bf3 (Bxg2 23.Qh4+ Kg6 24.Rg3+ Kf5 25.Qg4#) 23.Rxf3 Qxf3 24.Qxf3 and white has the winning material advantage of Q+B+P against 2 rooks.

Time for review...

Jun-02-11  zb2cr: Found the game line. <Jimfromprovidence>'s attempt at a counter-sacrifice is interesting, but as he points out, looks inadequate.
Jun-02-11  sevenseaman: <JuliusDS> Right.

<Muztang> No. I guess the longest it can be stretched by a determined Black is;

1. Qe6 Qxh2+ 2. Kxh2 Bd6+ 3. cxd6 Rxe6 4. fxe6 Nxe6 5. Bxe6 Bc8 6. Ng6+ hxg6 7. Rh3#

Jun-02-11
Premium Chessgames Member
  CHESSTTCAMPS: I didn't consider the 22... Be4 defense covered by <agb2002> and <tacticalmonster>. This is worth a diagram:


click for larger view

Now 23.Rxe4? Rg8! stops the mate, but 23.Rh3+ wins smoothly.

Jun-02-11  Patriot: <Once> <The Qg4+ trick is a standard device that we have seen in POTDs before.> Absolutely! Your entire post is excellent. I thought about the d5 interference within the combination to stop ...Bxg2 and therefore stopping Rh3# but thought it was unnecessary since white can swap queen and rook positions. For example, 18.Bxf6 gxf6 19.Rxh7+ Kxh7 20.Qh3+ Kg6 21.Qg4+ Kh7 22.Re3 Bxg2 23.Qh4+ Kg7 24.Rg3#. The zwischenzug, 22.d5, may still be ok by itself but is dangerous for white after 22...Bxd5 23.Bxd5? Qxd5 since 24.Re3 is stopped because of white's back rank and because the black queen is in a better position to defend the king.
Jun-02-11  HolyAvatar: <CHESSTTCAMPS> after 23.Rxe4 Rg8 mate in two 24.Qh4 Kg7 25.Rg4# The only way to avoid mate after Rxe4 is to sacrifice the queen.

<sevenseaman> Ng6 seems winning in all the variations I calculated. 1.Ng6+ hxg6 2.Rh3+ Nh7 3.fxg6 Ndf8 4.Rxh7 Nxh7 5.Qh4 and mate next move.

or 1.Ng6+ Nxg6 2.fxg6
2. ...hxg6 3.Rh3#
2. ...Nf8! 3.Rh3 and here you get some complications with 3. ...h7 but it's still winning.

Didn't spot Qe6.

Jun-02-11
Premium Chessgames Member
  CHESSTTCAMPS: <HolyAvatar: <CHESSTTCAMPS> after 23.Rxe4 Rg8 mate in two 24.Qh4 Kg7 25.Rg4#..>

This is not mate - black now has 25... Kf8, a resource available in other lines mentioned by <Once> and others.

Jun-02-11  sevenseaman: <HolyAvatar> <Ng6 seems winning in all the variations I calculated. 1.Ng6+ hxg6 2.Rh3+ Nh7 3.fxg6 Ndf8 4.Rxh7 Nxh7 5.Qh4 and mate next move.

or 1.Ng6+ Nxg6 2.fxg6
2. ...hxg6 3.Rh3#
2. ...Nf8! 3.Rh3 and here you get some complications with 3. ...h7 but it's still winning.

Didn't spot Qe6.>

Q e4 to e6 is for pulling the N from f8. Else;

1.Ng6+ Nxg6 2.fxg6 h6 throws a spanner in the works in the first variation too.

Jun-02-11
Premium Chessgames Member
  kevin86: Black will be sealed in the tube of g and h files-helpless from any aid from outside. The bishop and queen will mate.
Jun-02-11  sevenseaman: <nariga> <How about:

19.Rxh7 Kxh7 20. Qh3+ Kg7 and if
21. Qg3+ Kh7 again
or if
21. Re3 Rg8

Basically, anytime white does Re3, black responds with Rg8, providing an escape square on f8.>

You are right, Black must not be given a move to escape. This is how it is achieved.

i) 18. Bxf6 gxf6 19. Rxh7+ Kxh7 20. Qh3+ Kg7 21. Qg4+ Kh7 22. Re3 Bxg2 23. Qh5+ Kg7 24. Rg3#. as given by <Patzer2> also.

Or;

ii) 22...Rg8 23. Rh3#

Jun-02-11  David2009: A Timofeev vs Svidler, 2008 White 18?

18 Bxf6 gxf6 (if Bxg2 19 Bxg7+ Kxg7 20 Rg3) 19 Rxh7+ Kxh7 20 Qh3+ Kg7 or Kg8 21 Qg4+ Kh1, Kh2 or Kh3 22 Re3 and if Bxg2(?) 23 Qh4+ K to g file 24 Rg3#. Black can fight on with 22...Bf3! 23 Rxf3 Qxf3 24 Qxf3 Rxd4 but with Q+B for RRP White should be winning on material. Time to check:
====
Seems OK. Puzzle position:


click for larger view

Crafty End Game Trainer link:
http://www.chessvideos.tv/endgame-t... The EGT goes into the 18...Bxg2 defence and those who want can play the ending out a piece up. Alternatively after the game line 18 Bxf6 gxf6 the position linked to Crafty EGT is http://www.chessvideos.tv/endgame-t... I was pleased to discover that I had found the best 19th move defence for Black (other than 19...Resigns which is perfectly appropriate at grandmaster level) but struggled to win as White. We reached


click for larger view

A Timofeev vs Svidler 2008, variation 39? (final link http://www.chessvideos.tv/endgame-t...) and I converted the win but only because, unexpectedly, the EGT suddenly gave up RR for QP leaving it with a dead lost ending.

Jun-02-11
Premium Chessgames Member
  Jimfromprovidence: From my ealier post...

"18 Bxf6 Bxg2?! loses to 19 Bxg7+! Kxg7 20 Qg3+ (better than 20 Rg3+). Now, after 20Kh8, then 21 Rxh7+ Kxh7 22 Re5 looks good. 22...f5 complicates things and makes for a good side puzzle".


click for larger view

To <scormus> and <zb2cr>. There is a winning line after the above 22f5. White continues with 23 Qh4+ and black responds 23Kg8 (best move). White continues with 24 Bxe6+.


click for larger view

Now, after 24 Rff7, white wins after 25 Rxf5 (with the double threat of Qg5+ or Rh5).


click for larger view

if black gets cute with 25...Bh1, then 26 f3 or d5 stops that mate threat.

Jun-02-11
Premium Chessgames Member
  hedgeh0g: <Very> common mating pattern. The black king is cut off from the rest of the board thanks to the blocked f-pawns and the rook on f8, creating a hallway-like vacuum on the kingside, which can be perfectly exploited by two white heavy pieces.

Bxf6 starts the combination by removing the defender of h7 and creating the crippled structure. Now Rxh7+! removes the last pawn protecting the king. After Kxh7 (Kg8 Qg3+ runs into pretty much the same), Qh3+ K anywhere Qg4+ K anywhere Re3! and there is no good defence to a ladder mate on the g and h-files.

Jun-02-11
Premium Chessgames Member
  hedgeh0g: Again, I cannot stress how important this theme is. It's occurred in several of my games and being able to recognise the pattern and the correct opportunity to execute it should be very beneficial to any chess player.
Jun-02-11  stst: 18.BxN PxB
19.RxP+ KxR
20.Qh3+ Kg6 (Kg8 or Kg7 weaker alt.)
21.Bd3+ Kg5
22.Re5+ Kd4
23.Qg3#
Jun-02-11  estrick: <Phony Benoni: The difficulty of this puzzle lies in restraining the sac glands long enough to play a preparatory move which needed to be made in any event.>

LOL

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