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Elmar Magerramov vs Vladimir P Malaniuk
Warsaw op (1989), Warsaw POL, Apr-??
Dutch Defense: General (A80)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
May-21-14  diagonalley: ...aarrrgggh! ... i didn't persist with the exchange sacrifices :-( .... diagonalley: 0 points
May-21-14
Premium Chessgames Member
  patzer2: <ThumbTack: 18.Rxd4 is fairly obvious, but I didn't see anything great after 18..Bxd4.>

Also found it obvious, but only because it's a puzzle.

However, it's harder than our usual Tuesday POTD because it combines a number of tactical themes:

1. Deflection and Mating Tactic: The idea benind the combination is if we can deflect the Queen from the defense of the critical h7 square, we can mate-in-one with Qxh7#

2. Decoy (forcing a piece to a square): 18. Rxd4 forces either 18...Qxd4?? or 18. Bxd4.

3. Pin and Deflection: 18. Rxd4 Bxd4 19. Rd1 attacks the pinned Bishop, as well as threatening Rxd4 to deflect the Queen from the defense of the mate threat.

4. Overloading on the Pinned Piece: After 18. Rxd4 Bxd4 19. Rd1 c5 20. Bxc5 , the pinned Bishop is forced to surrender.

5. Overworked Piece: The forcing sequence 18. Rxd4 Bxd4 19. Rd1 c5 20. Bxc5 Bxf2+ 21. Kxf2 (diagram below)


click for larger view

proves the White Queen decisively overworked with the dual threat 21...Qxd1 22. Qxh7# or 21...Qc7 22. Rxd8+ Qxd8 23. Qxh7#.

May-21-14
Premium Chessgames Member
  agb2002: The material is identical.

The first idea that comes to mind is 18.Rxd4 Bxd4 (18... Qxd4 19.Qxh7+ Kf8 20.Qf7#) 19.Nxh7 Qxh7 20.Qg5+ Qg7 21.Qxd8+ winning a pawn at least but Black can play 19... Qg7 and have the better position.

-----

Another option is to pin the bishop with 18.Rxd4 Bxd4 19.Rd1, threatening 20.Rxd4:

A) 19... Bxf2+ 20.Kxf2 e3+ 21.Kxe3

A.1) 21... Re8+ 22.Kf2 (or even Kf4) and Black looks lost.

A.2) 21... Qe8+ 22.Qxe8 Rxe8+ 23.Kf2 with the better ending [B+N vs R].

B) 19... c5 20.Bxc5 Bxc5 21.Rxd7 Rxd7 22.Ne6 with the double threat 23.Qe8# and 23.Nxc5 seems to win.

C) 19... Qg7 20.Rxd4 looks winning. For example, 20... Bd7 (20... Rxd4 21.Qe8+ Qf8 22.Qxf8#; 20... Qxd4 21.Qf7+ Kh8 22.Qxh7#) 21.Rxe4 fxe4 22.Bxe4 Be8 (to prevent 25.Bf7+) 23.Bxh7+ Kh8 24.Bg6+ Kg8 25.Bxe8 Rxe8 (25... Rd1+ 26.Kg2 with the threat Bf7+) 26.Bb2 wins the queen or delivers mate.

-----

19.Rd1 looks much stronger than 19.Nxh7.

May-21-14
Premium Chessgames Member
  gawain: This was not as dramatic as the easy/medium puzzle solutions usually are. I figured that 18 Rxd4 had to be the puzzle move because of the nifty forcedness of the bishop recapture (not 18... Qxd4 on pain of rapid checkmate. And I guessed that 19 Rd1 was the winning follow-up but I was lazy and did not work out the details.
May-21-14
Premium Chessgames Member
  patzer2: A sixth tactical theme involved is the "double attack" after 18. Rxd4 Bxd4 19. Rd1 c5 20. Bxc5 Bxc5 21. Rxd7 Rxd7 (diagram below).


click for larger view

Here 22. Ne6 wins with the double attack (i.e. dual threat) 23. Qe8# or 23. Nxc5 .

May-21-14  Castleinthesky: I'll give myself three quarters of a point. I got it but wasn't sure if the exchange was winning. I was black, I would probably resign after being inflicted with more pain.
May-21-14  Nick46: <morfishine: A "Rucksack" sends "Black-packing"

18.Rxd4 Bxd4 19.Rd1 Qg7 20.Rxd4 Rxd4 21.Qe8+ Qf8 22.Qxf8#

As noted by others, better for Black is to accept the exchange for a piece with 18.Rxd4 Bxd4 19.Rd1 Bxf2+ 20.Kxf2 e3+ 21.Ke1 Qxd1+ 22.Qxd1 Rxd1+ 23.Kxd1 c6 24.Ke2 Bd7 25.Kxe3 Re8+

*****> I've followed this thru to here but it's not an evident cakewalk yet ... There's still some life left in Vlad

May-21-14
Premium Chessgames Member
  kevin86: I tried the sac, but didn't go far enough with it.

Tough puzzles this week...and it's only Wednesday...ouch!

May-21-14
Premium Chessgames Member
  sfm: I had 18.Bc5 as the strongest. Now the threat is of course to swap everything on d4. What can Black do about that? AFAICS a full piece goes. Unlike for the 18.RxN variations, Black can not sac on f2.
May-21-14  sombreronegro: Pretty much exploiting the queen having to cover f7 and h7. Worse for black is the overburdened queen is blocking the rook and bishop. Even with a queen and a rook no claim can be made of the d-file. Pretty ironic for a Dutch defense that black queen became so unwieldy. That is usually the easiest piece to deploy in the Dutch. It just looks so uncoordinated to try the fianchetto with the g6 pawn blocking in the queen. Then when the pawn does clear she is on d7. Leave that queen on the normal square on e8 and the bishop is active the rook covers the d file and certainly the white queen can't sit on h5. So yeah the fianchetto here looks like a disaster or at least has the potential to be. Same reason why I am wary of it in king pawn games. Its not as well coordinated because of all the black square weaknesses or white square weaknesses respectively.
May-21-14
Premium Chessgames Member
  pittpanther: Seems to me black can survive this. If 18 .Rxd4 Bxd4 19.Rd1, threatening 20.Rxd4:

19... Bxf2+ 20.Kxf2 e3+ 21.Kxe3

Black plays 21...Qe8 and forces the exchange of queens. White has two pieces for the rook but not a clear win. In fact if black plays 22...c6 after white moves his king it seems black can survive - though he will probably lose in the end.

May-21-14  Cheapo by the Dozen: My move is 18 Bc5. The first two points are:

An exchange on d4 ends with Black's queen being diverted from defense of h7. Defense of the knight by ... c5 is physically blocked.

Further points are:

An exchange at g5 ends with Black losing a tempo to check. If Black breaks the pin with check and then moves his queen with a threat (e.g. Qc6 attacking the c5 bishop), he just winds up undefending h7 again.

The key line is:

18 Bc5 Nf3+
19 Bxf3 Qg7 (where else?)

Capturing with 19 Nxf3 doesn't win as simply, because of:

18 Bc5 Nf3+
19 Nxf3 Qxd1
20 Rxd1 Rxd1+
21 Bf1 exf3

Material is now fairly even, and White only has 2 pieces in his attack.

May-21-14  Cheapo by the Dozen: OK. Why isn't my line a little better than the actual game continuation? Did I miss a defense for Black?
May-21-14
Premium Chessgames Member
  Pedro Fernandez: I struggled with the position since after 18.Rxd4 Bxd4 19.Rd1 Bxf2+ 20.Kxf2 Qxd1, I didn't see 21.Qh7 mate. If I had used a chessboard is very likely that I had found the solution.
May-21-14  doubledrooks: <Cheapo by the Dozen>: I also went with 18. Bc5. It seems better than 18. Rxd4.
May-21-14  Madman99X: After 18 Bc5, how does the attack continue after ...Qg7 ? I would take white's position over black's, but it seems defensible. Houdini plays 19. Rxd4 Bxd4 20. Rd1 Bxf2+ 21. Kxf2 22. Rd7 and now all black's pieces are in play.
May-21-14
Premium Chessgames Member
  Once: This is a yesbut puzzle - a bit like an argument between two people who have been married for so long that they have forgotten that other worlds exist. Each one is the other's north and south. They finish each other's sentences, know all of the punchlines to all of the jokes.

A yesbut argument is where you agree with someone ... and then point out an exception. Then they agree with you, but also point out a counterpoint. And so you argue endlessly ... "yes you are right but have you thought about ...?"

One musical example would be "there's a hole in my bucket..."

https://www.youtube.com/watch?v=yD-...

So to today's POTD. The first thing we notice is that if the black queen wasn't guarding h7 we could play 18. Qxh7# <Yes> the mate is on, <but> the black queen is guarding it.

So we have to look at ways to deflect the black queen. And the most obvious smiting way to do this is 18. Rxd4. This follows Once's 17th law - any move which limits the opponent's replies must be looked at.

And this is when black cries triumphantly "yes but 18...Bxd4 and the queen is still defending h7".


click for larger view

Now we notice that the black queen is having to do two jobs - she has to defend the Qxh7# threat and she has to look for the second paratrooper to land on d4. So the move that absolutely has to be looked at is 19. Rd1 threatening 20. Rxd4 and the queen still can't move.

You know what's coming don't you? Black says "yes but". <Yes>, you can play 19. Rd1 <but> with 19...Qg7 I'm defending the Bd4 and the h7#.


click for larger view

We have to apply Once's 17th law again. Black still has to keep his queen near to h7, so if white played 20. Rxd4 black would not be able to reply with 20...Qxd4. Any move which limits our opponent's reply should be looked at.

"Yes but" says black. "I can play 20...Rxd4"


click for larger view

"Be my guest," says white. 21. Qe8+

"What's that? No more yesbuts?"

So there you have it - a "yesbut". Not be confused with the hindmost part of a Jennifer Lopez (or as the Mem would insist George Clooney).

That's called a yesss!butt.

May-21-14  Cheapo by the Dozen: 18 ... Qg7 is the defense I missed. Thanks!
May-21-14  Patriot: I missed the point completely behind 18.Rxd4 after 18...Bxd4 even being aware of the mate if the black queen leaves the 7th rank. And looking at the actual position if 18...Bxd4, it still was not obvious until reading <patzer2>'s explanation (Thankyou!).

So I went with 18.Bc5 (second best move) which gives white a decent advantage.

May-21-14  Pballa: <Nick46: first move is intuitive, but the rest is a bit over my head>

So you think it's intuitive to sacrifice the exchange without knowing how to continue?

May-21-14  gars: 18) R x d4. What next?
May-21-14  stingray0104: After 18. Rxd4 Bxd4 19. Rd1 black can give the bishop away and still be ok in material count.

However, the black pieces are utterly paralyzed- black's queen is trapped on the seventh rank, and his rooks are tripping over his own (immobile) light squared bishop.

May-21-14  M.Hassan: "Medium/Easy"
White to play 18.? and they are equal

White can checkmate on the 7th rank if Black Queen is not guarding it, mainly the f7 square, so try to deflect the Queen:

18.Rxd4
<if...Qxd4 19.Qf7+ Kh8 20.Qxh7#>

18.............Bxd4
19.Rd1 c5
20.Bxc5 Bxc5
Black knowing that the Queen is lost, captures a piece at least. 21.Rxd7 Rxd7
22.Ne6 Rd1+
23.Qxd1 Bxe6
White is stronger in material count.

May-22-14  Dr. J: <patzer2: A sixth tactical theme involved is the "double attack" after 18. Rxd4 Bxd4 19. Rd1 c5 20. Bxc5 Bxc5 21. Rxd7 Rxd7

Here 22. Ne6 wins with the double attack (i.e. dual threat) 23. Qe8# or 23. Nxc5 .>

Not right. 22...Rd1+ 23 Bf1 Bxe6 wins. If instead White tries 22 Qe8+ Bf8 23 Ne6 Black can choose either 23...Rf7, or 23...Rd1+!? 24 Bf1 Bxe6 25 Qxe6+ (25 Qxa8? f4!) K-any 26 Qxf5 Re8. I'm not sure White is winning.

But Black resigned at Move 18.

May-22-14  gars: <stingray0104, M.Hassam, Dr.J>: Thank you very much!
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