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Artur Yusupov vs Maxim Sorokin
Elista Olympiad (1998), Elista RUS, rd 4, Oct-02
Queen's Gambit Accepted: Old Variation (D20)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Jan-04-13
Premium Chessgames Member
  FSR: I would certainly play on in the final position. Maybe Sorokin flagged.
Jan-04-13  mistreaver: Friday.28.White to play. Difficult.
Black is really tied up, despite extra piece. His queen and king can't move, and rook is immobilized as it would be quite stupid to remove the attack from the white queen by moving the rook. White is however piece up so he has to hurry.
28 Rxe4 (quite obvious, altough it alows Nd6,if Re3 then Nd6 dislodges the queen as Nxg6 is not posible. 28... Nd6 (only move, no other figure can move)
29 Nxg6+ hxg6
30 Rh4+ Qxh4
31 Qxh8 + and
32 Qxd6 with extra pawn.
It seems to me that this is good enough, as
28 Qxe6 can be perhaps met by 28... Qe8.
Time to check.
----------------
Yes, i got this one, altough the final position is tricky as queen endgames are tricky, especially on club player level.
Jan-04-13  Bartimaeus: <mistreaver>
<28... Nd6 (only move, no other figure can move)> An alternative could be 28... Qf6 though the resultant ending is still in favor of white. <28 Qxe6 can be perhaps met by 28... Qe8.> Better option seems to be to 28. ... Bd5 threatening the Queen and then Nf7+ can be met by Rxf7.
Jan-04-13  Abdel Irada: <<•>A matter of degree<•>>

We may already say that White is ahead on material. The apparent reply to the key move is 28. ...Rxf7?, however, this merely offers Black a way to lose a rook thanks to the consequent knight fork.

Is a pawn enough to claim a win? As it turns out, this too is irrelevant, for the key contains a threat that must be met, and White will emerge from the smoke and shocks of battle with another pawn in hand. *Two* pawns, as a rule, should be enough for a win.

So, how do we get there?

<<•>28. Rxe4...>

I withhold an exclam because this isn't a real queen sac. It does, however, create a nasty threat: 29. Rh4, when Black will be mated by Qxh7 if he doesn't take, and by Qxf8 if he does.

There appear to be two really relevant defenses, as well as many irrelevant ones.

<(1) 28. ...Qf6>

Now Black threatens to take on f7, so Rh4 is no longer playable, but White has better.

<29. Nxg6†, hxg6
30. Rh4†, Qxh4
31. Qxf8†, Kh7
32. Qxc8, Qxd4
33. Qxb7†, Kh6
34. g3 >

White is two clear pawns up and the back-rank threat has been eliminated. Objectively, this should be enough. Note that this also applies if Black plays 28. ...Qe7, which transposes into the preceding line.

It can now be argued: The knight on c8 fell to a fork, so let's move it. But where will that lead?

<(2) 28. ...Nd6>

Here's what looks a formidable defense: The knight now forks queen and rook, so there's no time for a quiet move. Fortunately, White has loud ones.

<29. Nxg6†, hxg6
30. Rh4†, Qxh4
31. Qxf8†, Kh7
32. Qxd6 >

Again, White is two clear pawns to the good. But again, this appears to depend on the black knight's being on a vulnerable square.

Just for illustrative purposes: What happens, then, if Black puts it on a safe square?

<(3) 28. ...Na7?
29. Rh4, Qxh4>

As before, Black loses a rook with 29. ...Rxf7, although this is better than what follows.

<30. Qxf8#>

As we see, the knight can be "saved" only at the expense of the king or the rook. In other words, Black has no better defense than lines (1) and (2).

On the whole, this is a quite forthright problem with a tiny variation-tree. Its principal instructive value lies in its illustration of the principle of the illusory threat: Black doesn't really threaten ...Rxf7, and from that flows everything else we need.

Jan-04-13
Premium Chessgames Member
  whiteshark: More easy than one had expected.
Jan-04-13
Premium Chessgames Member
  perfidious: Not sure, really, why this deserves 'difficult'-the main variation is of a forcing nature and even then, the only slight difficulty for even a player of my strength lies in perceiving best play after 32....Qe4. For a strong grandmaster (unless short of time), this is not at all difficult.
Jan-04-13  Abdel Irada: <perfidious: Not sure, really, why this deserves 'difficult'-the main variation is of a forcing nature and even then, the only slight difficulty for even a player of my strength lies in perceiving best play after 32....Qe4. For a strong grandmaster (unless short of time), this is not at all difficult.>

Agreed on all counts.

Jan-04-13  Marmot PFL: The white queen is safe for now, due to the Nxf7+ fork, so white just regains material with 28 Rxe4. Black's only threat is 28...Nd6, but 29 Nxg6+ hg 30 Rh4+ Qxh4+ 31 Qxf8+ and white should win the queen ending.
Jan-04-13  morfishine: Yusupov is one of my favorite players and writers

White to move is up a pawn, but down a piece. There is no useful check [ie:28.Nxg6+ Bxg6] & only 2 captures to consider: 28.Qxe6 and 28.Rxe4; We can rule out 28.Qxe6 for being too slow; and besides, 28...Bd5 stops checks on f7

<28.Rxe4> White doesn't fear the fork 28...Nd6 due to 29.Nxg6+ hxg6 30.Rh4+ Qxh4 31.Qxf8+ Kh7 32.Qxd6; and 28...Rxf7 29.Nxf7+ Kg7 30.Nxd8 leaves White up a rook

<28...Qe7> Forced; If 28...Ne7, then 29.Rh4 h5 30.Nxg6+ Nxg6 31.Rxh5 mate

<29.Nxg6+ hxg6 30.Rh4+ Qxh4 31.Qxf8+ Kh7 32.Qxc8 Qxd4>


click for larger view

I guess White has an advantage after 33.Qxb7+ followed by 34.Qb3 since he's up 2-pawns; but the win can't be easy with Queens on

*(I had to fix this note since my diagram was missing the Black pawn g6)

**********
PM: I had to chuckle: Black followed the line I claimed he couldn't play!

*To reiterate, I had to fix my diagram since I left off the Black pawn on g6...oops

Jan-04-13
Premium Chessgames Member
  chrisowen: Mountain to climb for black since hes two pawns away again a longer bill to rights inch under h4 dread in the hood a tete now cajolee6, ne5 grabbed g6 I suppose low in bull shine d6 Tam (cap) in cheerio ja nod in about saw off Qe4 when i bully it annoying e1 e4 h4 effect again in for you yes hind maneovre ques the body lattice network in data see ticks of tendril line continues in e4 wave o find a series of checks until kh2 dawns made the grade it stomaching give h7 arunner sit ha 32.Qxd6 domino.
Jan-04-13  The Last Straw: <morfishine>In your last line, how about 33.♕xb7+ ♔h6 34.♕xa6? If 34...♕d1+ white can block with 35.♕f1, and if 34...♕xb2 35.g3 (prophylactic) and white has a passed a-♙.
Jan-04-13
Premium Chessgames Member
  kevin86: White's queen was hopping around like a cat on a hot tin roof.
Jan-04-13
Premium Chessgames Member
  paulalbert: Didn't think this was as difficult as usual Thursday puzzle. Saw the Qf6 and Nd6 defensive ideas ( obviously after Rxe4 black can't take Q on f7 because of N fork )and the Ng6ch and Rh4ch responses without too much difficulty, and concluded a winning Q and and up a couple Ps endgame was the best I could achieve.
Jan-04-13  morfishine: <The Last Straw> Looks fine to me. However, I wonder if White can overcome the technical difficulties after 35.g3 <35...Qb1+>; White is practically forced to play 36.Qf1; otherwise if 36.Kg2 Qe4+ and I'm not sure White can win this;

And after 36.Qf1 then <36...Qa2>

Thats one of the reasons I liked 33.Qxb7+ followed by <34.Qb3>: White holds back taking the a-pawn, trying to get a passed b-pawn; I better check Reuben Fine's book "Basic Chess Endings" to make sure! :)

Jan-04-13  BOSTER: I was very surprised when I saw the pos. on diagram with white to play move 18.


click for larger view

Maybe it will be a good <POTD> for any Friday. Untill "d5" square was not blocked, and knight on a7 in the air I'd play 18.Nxf7 Kxf7 19.Bxe6+ Kg7 20. and even after Bxc8 Nxc8 this is a real bargain , or 18.Nxf7 Kxf7 19.Rxe6 Kg7 with many complication with idea d4-d5 and using the d4 square as the point of the intersection Kg7 and Na7.

Jan-04-13  David2009: Yusupov vs M Sorokin, 1998 White 28?

I couldn't see the point of the puzzle from the diagram since 28.Rxe4 wins immediately - Oops! 28...Nd6! (which I hadn't seen) traps/forks White's Queen and so nearly restores the balance: 29.Qxe6? drops a piece; 29.Qc7? allows Black strong counterplay, so there remains Yusupov's 29.Nxg6+ and the forced line gives White the last laugh. Not even Crafty End Game Trainer can save Black: link to the puzzle position http://www.chessvideos.tv/endgame-t.... This link is also good for exploring Whie's alternative 29th moves.

Here's a supplementary Crafty EGT link http://www.chessvideos.tv/endgame-t... to test out <BOSTER>'s analysis of the position at move 17:


click for larger view

Against the game continuation, the EGT defends as per game until 19.Qd2 when it varies with 19...Nxc3 meeting 20.Bxc3 with Bxa3, and 20.Rxc3 with Nb5. I cannot win from the diagram. Is there a win from the second link?

Jan-04-13  Kikoman: 28. <Rxe4> and that's it!

How about Black replied with the move 28. ...g5? :O Somebody explain to me if what White should do?

Jan-04-13  BOSTER: What is Crafty opinion about this? Thanks in advance.

Instead 26...Bf8 black could play
26...Bf6 trapping the white queen, and it looks like white had to see how to safe the game.


click for larger view

This is the pos. where black play 26...Bf6 instead of 26...Bf8.

If 27.Rxe4 Nd6 with threat Bxe5.

Jan-04-13
Premium Chessgames Member
  FSR: <Kikoman: 28. <Rxe4> and that's it!

How about Black replied with the move 28. ...g5? :O Somebody explain to me if what White should do?>

There's no instant win, but White would be two pawns up after 29.Qxe6.

Jan-04-13  Patriot: <BOSTER> Nice job! According to Houdini, 26...Bf6 is the move and is dead even.

New game - Houdini 1.5a x64, Blitz:4'+2" Microsoft


click for larger view

Analysis by Houdini 1.5a x64:

1. = (0.00): 2.Nd7 Bxd4 3.Bg5 Nd6 4.Bxd8 Nxf7 5.Bf6+ Bxf6 6.Nxf6 Bc6 7.Nxe8 Bxe8 8.Rxe6 Bc6 9.f3 Kg7 10.Kf2 Ng5 11.Rd6 Kf7 12.Rd1 Ne6 13.b3 Nf4 14.Rd6 Ne6 15.Rd1 Nf4

2. (-0.45): 2.Ng4 Bxd4 3.Bg5 Rf8 4.Bxd8 Rxf7 5.Rxe4 Bxb2 6.Ba5 Kg7 7.Rxe6 Bxa3 8.Re8 Rd7 9.Kf1 Nd6 10.Bc3+ Kf7 11.Re3 Nc4 12.Rf3+ Ke6 13.Rf4 Nd6 14.Rf6+ Kd5 15.Rf3 Re7 16.Nf6+ Kc6 17.Rh3 b5

3. (-0.81): 2.Bf4 Nd6 3.Qd7 Rf8 4.Qxe6 Bg7 5.g3 Rf6 6.Qd7 Qxd7 7.Nxd7 Rxf4 8.gxf4 Bxd4 9.b4 Bd5 10.Kf1 Bc4+ 11.Kg1 Kg8 12.Rd1 Nf5 13.Rc1 Bd5 14.Ne5 Nd6 15.Rc7

4. (-2.58): 2.Rxe4 Nd6 3.Rf4 Bxe5 4.Qf8+ Rxf8 5.Rxf8+ Qxf8 6.Bxf8 Bf4 7.g3 Kg8 8.Bxd6 Bxd6 9.f4 Kf7 10.Kf2 Kf6 11.Kf3 Kf5 12.h3 h5 13.b4 Bf8 14.g4+ hxg4+ 15.hxg4+ Kf6 16.Ke4 g5 17.Ke3 gxf4+

5. (-2.86): 2.h3 Nd6 3.Bf4 Bg7 4.Qd7 Qxd7 5.Nxd7 Bc6 6.Bxd6 Bxd7 7.Be5 Rc8 8.d5 Bxe5 9.dxe6 Bxe6 10.Rxe5 Rc6 11.Re2 Kg7 12.f3 Kf6 13.Kf2 Rc1 14.Ke3 h5 15.Rd2 h4 16.a4 g5 17.Rd6

6. (-2.94): 2.g3 Nd6 3.Bf4 Bg7 4.Qd7 Qxd7 5.Nxd7 Bc6 6.Bxd6 Bxd7 7.Be5 Bxe5 8.dxe5 Rc8 9.Rd1 Bc6 10.f4 Bd5 11.Rd2 Kg7 12.Kf2 b6 13.Ke3 Kf7 14.h3 a5

Jan-04-13  Dr. J: After 33 Qc7+


click for larger view

doesn't Black have much better drawing chances with 33...Kg8? How does White avoid losing back one of the pawns?

Jan-04-13  fokers13: <Dr.J> Qc1! seems adequate.
Jan-04-13  BOSTER: <Patriot> <26...Bf6 is the move>. Thanks for the analysis.
Jan-04-13
Premium Chessgames Member
  Jambow: Not sure this was a three star puzzle maybe a two and a half as most the moves were natural once you realized Rxf7 was only getting black forked so the Bishop could be taken.

<FSR> Why you would play on in the final position, I would try out Carlsen from whites side two pawns up and the position was held solid with no loose pawns. Yusopov quickly consolidated the position very nicely.

Jan-05-13  Kikoman: Thanks <FSR> :D
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