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

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
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  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".


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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  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  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

Jun-02-11  Marmot PFL: Not too tough-- Bxf6 gf Rxh7+ Kxh7 Qh3+ K moves, Qg4+, K moves Re3 and its over
Jun-02-11  goodevans: Not too tough indeed. I found it almost instantly.

... but alas too tough for Mr Svidler who failed to fully estimate the threat that 16 Rh3 posed.

Jun-02-11  vvv: <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#>

After 25 Qh5, what happens if Black plays 25 ... f6?

Jun-02-11  Marmot PFL: <I found it almost instantly.> I think many players found it faster than the engines would, based on knowing the mating pattern with Q and R on the g and h files. It took my computer about a minute (admittedly an older model with free software).
Jun-02-11  Ghuzultyy: <18.Bxf6!>
There are big plans for the kingside, time to get rid of that defender.

<18...gxf6 19.Rxh7! Kxh7> Start of a good kingside attack that wins the game.


click for larger view

<20.Qh3+ Kg6 21.Qg4+ Kh7 22.Bd3+>

22.Re3 also wins but let's keep on going with tempo.

<22...f5>


click for larger view

<23.Qh5+ Kg7 24.Qg5+ Kh7> Black king is trapped enough, I tried to find another winning line but..

<25.Re3!>
has to be played now or later anyways.

Now black can't do anything really. Bf3 doesn't work. Black has to sacrifice the queen. Its all over.

Jun-02-11  James Bowman: Tuesday puzzle on Thursday for my ego thanks cg been one of those days how did you know. ;o]
Jun-02-11  David2009: <Ghuzultyy> thank you for your characteristically interesting and thorough post (A Timofeev vs Svidler, 2008). I assume that you are relying on over-the-board analysis (moving pieces on the chessboard)? There seems to be a hole: 19...Kxh7 20.Qh3+ Kg7 21.Qg4+ Kh7 you recommend 22.Bd3+ instead of 22 Re3, expecting 23...f5 23.Qh5+ Kg7 24.Qg5+ Kh7. However Black has 24...Kh8! threatening f6, so 25.Qf6+ Kg8 26.Re3 and now, instead of 26...Bf3 giving up Q for R+B Black has the fantastic defence 26...Rc8!


click for larger view

and Black escapes (or does he?). So I conclude that 22 Bd3+ is weaker than the straightforward 22 Re3 as analysed in my own earlier post.

It would be nice if I was a strong enough player to discover these amazing resources against 22 Bd3+ unaided, but - they were found by the EGT (my earlier post refers, A Timofeev vs Svidler, 2008).

Jun-02-11
Premium Chessgames Member
  DarthStapler: Got it
Jun-02-11  WhiteRook48: I got the first move, but not the second. I'm clueless
Jun-02-11  KingV93: Saw this one pretty quickly, seems to be a simple case of removing the defender. Admittedly I didn't look for much refutation as there is a path wide as a freeway to the Black ♔
Jun-02-11  mathematician: <David2009>

At the end of your variation, where Black played Rc8, can White not simply go Rh3?

Jun-02-11  wals: Weak, inferior, below par, candidate moves
lead to losses.

Looking good up to 14.Rxc3 =0.24

14...Rc7 not in top five -5.

15...Kh8 3rd best -2.

16...Qa8 4th best -3.

17.Nxd7 3rd best -2.

17...Rxd7 2nd best -1.

Black 11, White 2, and White wins
when Black resigns after 19.Rxh7+, +3.93.

courtesy of Rybka 4 x 64.

Jun-02-11  TheBish: A Timofeev vs Svidler, 2008

White to play (18.?) "Medium"

White has a winning attack after 18. Bxf6 gxf6 19. Rxh7+! Kxh7

(Obviously losing is 19...Kg8 20. Qh3 when Black can't stop 21. Rh8+ Kg7 22. Qh6#)

20. Qh3+ Kg7 21. Qg4+ Kh7 22. Re3 Bxg2 23. Rg3! and mate next move from either 24. Qg7# or 24. Qh4#.

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