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Mikhail Ulybin vs Evgeny Sveshnikov
? (1988)
Sicilian Defense: Old Sicilian. Open (B32)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
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Nov-15-08  beginner64: I had 19..f5. 20 exf5 Rxf5 21. Rf1 and white was OK.

I did notice that 19..h5 is interesting, but does not work right away.

What I failed to notice obviously was that putting these two moves together, all squares for white's queen run out. The dual threats of Qxf2 (followed by Qf1+) and Qxd1 cannot both be protected by white queen with the pawns and the nearly crazy rook out to get her. Oh well.

Nov-15-08  beginner64: Obviously in my focus on puzzle, I missed the bigger picture. When I ran through the game line, the line seems nearly all book, uptil move 14.

Where exactly does white lose it? Was 19. Qg4 a double question mark?

Nov-15-08  JG27Pyth: Weird week, I had the least trouble this week, with Saturday! Perhaps my two-week spell of chess-dullness is at an end?

Qxd1 would be mate but the R on d1's only defender is the queen: the position cries out for the Queen to be deflected. Nothing complicated about it. f5 to attack the queen, force open the f file and black's attack is becoming irrestible.

So, uh, what's wrong with 20. Rxf5? ... well I guess h5 is more to the point.

Nov-15-08
Premium Chessgames Member
  al wazir: I had the right idea, but I wanted to play the immediate 20...Rf5, which loses to 21. Rd2.

But what is the reason for 21...e4 ? Doesn't black win with 21...Rxf5 ? If now 22. Rd2, then 22...Qxc1+ 23. Rxc1 (23. Rd1 Qc2) Rxc1+ 24. Rd1 Rxf3 25. Rxc1 Rf8, and black is up a piece.

Nov-15-08  dzechiel: Black to move (19...?). Material even. "Very Difficult."

My instincts draw me to

19...f5!

as the key move. It attacks the white queen (forcing), and it threatens to open lines (the f-file). I like it. White must address this attack, but the white queen is also holding the white rook on d1 on the board. I think white must play

20 exf5

Now I had to look again. I think black can now play

20...h5!

Once again attacking the white queen, which must also continue to protect the rook. 21 Qf3 allows 21...Rxf5 and now the queen becomes overloaded, trying to protect the rook and f2 at the same time. So...

21 Qxh5 Rxf5

On the queen AND on f2. It seems there should be more play than this, but if white can put up a defence, I don't see what it is.

22 Bg5

is met with

22...Qxf2+ 23 Kh8 Rxg5

Time to check and see how this actually went down.

Nov-15-08  JG27Pyth: Wow, I spelled irresistible, 'irrestible' = perhaps I've had enough Merlot.
Nov-15-08  dzechiel: I overlooked the defence 21 Qf3 Rxf5 22 Qd3! The zwischenzug 21...e4 is elegant and necessary! <sigh>, almost came up with that one.
Nov-15-08  NakoSonorense: And that's why I'll never be a GM... :(
Nov-15-08  dzechiel: After

21...Rxf1 22 Qd3 Qxf2+ 23 Kh1 e4

black still wins, but not as easily as white can now play

24 Be3 exd3 35 Bxf2 Rxf2

leaving black up a piece. In the game, black was going to win a queen.

Nov-15-08  DoubleCheck: I couldn't see anything other than 19...f5 as most forcing

my candidate moves were;
f5
Rc5?! Rc3?! < some lame attempt to double rooks

I had one main idea
19... f5
20. exf5 Rxf5
21. Bh6! Qxf2+
22. Kh1 Rf7
23. Rg1 Rc2
Unclear...

Thats as far as i got today

Nov-15-08  Billy Vaughan: The idea is, the Queen is needed to defend. So KICK HER.

It's not hard to figure out what to do once you're hellbent on throwing crap at the Queen until she's forced off the Rook. The biggest trick here is 21. ... e4, attacking the extra square the Queen could run to to protect her Rook (besides the squares on that diagonal).

Nov-15-08  Lightboxes: 21. ... e4 prevents white's move on
Qd3, which protects the rook on d1 and the f1 check mate spot (..... Qxf2+, Kh1 Qf1+, Rxf1 Rxf1#)

EEP!

Nov-15-08  sfm: A completely undramatic position with no threats. Pawn structure is banal.

White could play 19.Rd2 and offer a draw.

But 19.Qg4?? and Black is "throwing crap at the Queen until she's forced off the Rook".

What a shocker!

Nov-15-08
Premium Chessgames Member
  Once: A strange thing happened on the way to the forum... I managed to fool myself today.

The back rank mate beckoned. Deflect the white queen then take the Rd1 with check and mate. How to deflect the white queen? h5 doesn't work, because white can just take the pawn and stay on the d1-h5 diagonal.

So the starting move has to be 19...f5, when 20. ef brings our f8 rook into the attack.

Can white play anything to counterattack? How about 20. Rd2 to attack the white queen and wriggle out of the back rank mate threat? Nope, that doesn't work. 20...fxg4 21. Rxc2 Rxc2 and we are a rook up.

Can't see anything else good for white, so our starting sequence should be 19...f5 20. ef.

Now what? We bring the f8 rook into the game with irresistible threats against both f2 and Rd1. So 21...Rxf5 and doesn't that seem a little tweazy for a saturday?

What I had missed, of course, are two moves that didn't work one move earlier. h5 was no good at move 19, but absolutely a killer on move 20. And white's defence Rd2 was insufficient at move 20, but worked at move 21. I think I had categorised both moves as "don't work" and mentally filed them away.

Lazy, lazy, lazy.

My one consolation is that I would probably have seen 20...h5 in a real game. 19...f5 20. ef is a relatively risk free line which can be played almost on strategical grounds. Then we have time to examine the position again and spot that 20...Rxf5 is a lemon.

Nov-15-08  ozmikey: Yay...got this one out this time! Saturday's puzzles are usually a bit beyond me.
Nov-15-08
Premium Chessgames Member
  johnlspouge: Saturday (Very Difficult)

Ulibin vs Sveshnikov, 1988 (19?)

Black to play and win.

Material: Even. The White Kg1 has 2 legal moves, but is potentially vulnerable to back-rank mates. Black has a battery Rc8 and Qc2. The White development is incomplete. In particular, Bc1 disconnects Ra1 and Rd1, so Ra1 is unprotected and Qg4 has the absolute burden of preventing Qxd1# . The Black Rf8 and Be7 require activation. By enumeration, the candidate is neither a check nor a capture.

Candidates (19): f5

19f5 (threatening 20fxe4 winning a P)

The move f5 is often thematic for the Sveshnikov Sicilian, which the puzzle position resembles. The White Qg4 has the burden of preventing mate, so this move hurts. Over the board, positional considerations justify the candidate, so a tactical analysis is required only to note that it drops no material.

20.exf5 [else, drop at least a P]

20h5

The move 20Rxf5 is good, but analysis shows it insufficiently forcing to win. The zwischenzug 20h5 permits the capture Rxf5 with tempo, because of an attack on the White Q. White can either capture Ph5 or not, but the White Q must maintain protection against Qxd1#.

(1) 21.Qxh5 Rxf5

(threatening 22Qxf2+ 23.Kh1 Qf1+ 24.Rxf1 Rxf1# and 22Rxh5)

White drops at least a R (or Q for R) to prevent mate.

(2) 21.Qf3 Rxf5

The same threat ends the game.

The game continuation 21...e4 is better than 21...Rxf5 in Variation (2), although 21...Rxf5 also leads to overwhelming gain of material (better than +3 P for Black).

Nov-15-08
Premium Chessgames Member
  johnlspouge: Contrary to my statement below, 20...Rxf5 is a lemon. Under the usual conditions for my Toga analysis:

[ply 15/36 time 00:05 value (to White) +1.30]

19...f5 20.exf5 <Rxf5> 21.Rd2 Qxc1+ 22.Rxc1 Rxc1+ 23.Rd1 h5 24.Qe2 Rxd1+ 25.Qxd1 e4 26.Qd4 Re5 27.Kf1 Kf7 28.Ke2 Bg5 29.h3 a5 30.a3 Kg6

The zwischenzug 20...h5 is critical.

Nov-15-08
Premium Chessgames Member
  johnlspouge: Hi, <dzechiel>.

With humans able to improve near the end of the full computer best play variation, Toga II 1.3.1 gives

[ply 15/47 time 00:10 value (to White) -5.90]

19...f5 20.exf5 h5 21.Qf3 Rxf5 22.<Qd3> Qxf2+ 23.Kh1 Rc3 24.Be3 Rxd3 25.Bxf2 Rxd1+ 26.Rxd1 Rxf2 27.a3 Bg5 28.Kg1 Be3 29.Kh1 e4 30.h3 Rb2 31.b4 Ra2 32.Rf1 Rxa3 33.Kh2 Ra2

Although 21...e4 is much more decisive than 21...Rxf5, 22.Qd3 is hardly a saving clause for White.

Nov-15-08  zb2cr: Wow. This one was just totally beyond me.
Nov-15-08  Ladolcevita: got the first move,and then totally wrong==
Nov-15-08  PinnedPiece: The attempted defence to 19..f5 of
20.Rd2 to trade queens

loses a piece for white, and eventually the game.

Nov-15-08
Premium Chessgames Member
  Domdaniel: <DoubleCheck> I looked at some ideas for White with Bh6 too ... but there's another problem with your main line:

<19... f5
20. exf5 Rxf5
21. Bh6! Qxf2+
22. Kh1 Rf7
23. Rg1 Rc2 >

In this sequence, after 22...Rf7?? White just plays 23.Qxc8+ and wins.

Best for Black on move 22 is perhaps 22...g6, when he has some advantage.

But, in any case, the 'refutation' of 20...Rxf5 is 21.Rd2, when White is better. 21...Qxc1+ 22.Rxc1 Rxc1+ 23.Rd1 h5 24.Qe2 leads nowhere for Black.

Nov-15-08  HelaNubo: Interesting enough, after 19... f5 20. exf5 Rxf5? black plays 21. Rd2! and now its Black Queen's turn to be on the wrong diagonal.
Nov-15-08
Premium Chessgames Member
  chrisowen: Being frank, I pound out 19..f5 in these lines. It is with some trepidation I push 20..h5 noting that 21..e4 heads the tender queen back along the diagonal keeping in touch with the d1 rook. 22..Rxf5 shows white is living on borrowed time.
Nov-15-08
Premium Chessgames Member
  kevin86: The task here was to chase the queen away from the d1-h5 diagonal. The proper timing of moves was required,and black succeeded at doing so.

Another idea of this theme-written most loudly is:Adams vs Torre. (the game where Adams sacs his queen SIX times.

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