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Julio Lynch vs Paul Michel
Buenos Aires Circulo (1945), Buenos Aires ARG, rd 3, May-09
Queen Pawn Game: Krause Variation (D02)  ·  0-1


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Kibitzer's Corner
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Premium Chessgames Member
  Sastre: <gmalino> The position is equal after 25...Rxd2+ 26.Rxd2 Bxf3+ 27.Kxf3 Bb4 28.Ree2 Bxd2 29.Rxd2.
Dec-21-10  gmalino: Isn't my line winning as well?
Ok, it's not the best choice, but also winning.

<Phony Benoni>: "Tricky. There are a lot of targets in the White position, but the problem is finding which one to hit.

As a lot of solvers probably will, I looked first at 25...Rxd2+ 26.Rxd2 Bb4 skewering the rooks. But that doesn't seem to lead to anything more than exchanges, <especially with the Bb7 hanging.>"

--> Yes, but this can be handled by capture with check, isn't it?

Looks like I'm the only one trying the skewer after taking two pieces with check, makes me wondering if I overlooked something elementary....

Dec-21-10  gmalino: <Sastre> Hmm! Right! Giving quality and taking quality leads to equality, isn't it? Thanks for opening my eyes once again! Sometimes I am too attracted by trading....working on that....
Premium Chessgames Member
  agb2002: Black has the bishop pair for a bishop and a knight.

White threatens 26.Bxb7.

The rook on c2 and the knight are defenseless (attacked as many times as they are defended, at least) and White's bishop and knight can be captured with check. These facts suggest the double attack 25... Bb4:

A) 26.Rxc8 Bxc8 27.Rc1 Rxd2+ and 28... Ba6 - + [B].

B) 26.Rb2 Rxd2+ 27.Rxd2 Bxf3+ 28.Kxf3 Bxd2 - + [B].

C) 26.Bxb7 Rxc2 followed by 27... Rdxd2 - + [R].

D) 26.Rec1 Bxf3+ 27.Kxf3 Rxc2 28.Rxc2 Rxd2 - + [N].

E) 26.Nc4 Bxf3+ 27.Kxf3 Bxe1 - + [R].

F) 26.Rc4 Rxd2+ 27.Kh3 Rxc4 28.bxc4 (28.Bxb7 Rcc2 - + [R]) Bxf3 - + [2B].

Dec-21-10  jussu: Embarrasing, but this took me about five minutes to find.
Dec-21-10  jussu: <Sastre: <gmalino> The position is equal after 25...Rxd2+ 26.Rxd2 Bxf3+ 27.Kxf3 Bb4 28.Ree2 Bxd2 29.Rxd2.>

My feeling is that black has at least some trouble drawing this.

Dec-21-10  FrogC: It's a quiet move to which White has a couple of energetic-looking replies, which makes it a bit counter-intuitive. I saw it here but might well have missed it over the board.
Dec-21-10  zb2cr: The tempting 25. ... Rd2+ just leads back to material equality.

25. ... Bb4 is the right way, eventually leading to the win of a piece for Black. <agb> has diligently worked out many variations and posted them above.

Premium Chessgames Member
  Once: It all started with 11. Bxf6 ....

A chess game begins symmetrically. Just like the human body, we have one of everything down the middle and two of everything down the sides. Except for pawns, of course. And fingers and toes. But apart from that, and the aqueducts and sanitation, we have one etc etc etc.

And the symmetry continues as the game unfolds. I move, you move, I move, you move. After you, sir. No, I insist, after you.

When we exchange pieces and pawns, most trades are equal. Pawn for pawn, rook for rook, queen for queen... continue until KvK and a peaceful draw.

And if that was all there was to chess, it would be a pretty dull game. It would be draughts, scrabble, sudoku. In a parallel universe, there might be a website called where fans kibitz about how a Frank Marshallish character brilliantly wrote a 5 in the top left hand box and the audience showered the newspaper with gold coins. A move nearly as brilliant as Bobby Fischer-san putting an 8 in the lower middle box in the third game of the world championship against Petrosian-san.

The problem with Sudoku, my friends, is that it doesn't have moves like 11. Bxf6. With this move, white voluntarily exchanges a bishop for a knight. And that creates what Jeremy Silman calls an imbalance. Our starting symmetry has now been broken, and we have an intriguing question - which is better, the bishop or the knight?

Fast forward to our puzzle position, and we see that white's decision to trade bishop for knight hasn't worked out terribly well. The Bc5 is now the only piece left on the board that can contest dark squared diagonals. And the poor white knight on d2 is just pin-fodder.

And the rest is calculation, and not the kind where you suck on your pen as you squint at the newspaper and mutter "it can't be a 2 because there's one in the middle row, and the top left hand box needs a seven, which means that the bottom right hand box must be a 9...."

Or something like that

Dec-21-10  stacase: <a Frank Marshallish character brilliantly wrote a 5 in the top left hand box and the audience showered the newspaper with gold coins>

Funny stuff.

Dec-21-10  Patriot: This was tough for a Tuesday. 25...Bb4 sets up a winning pin/double-attack.

A) 26.Rxc8 Bxc8

A.1) 27.Rd1 Rxd2+ 28.Rxd2 Bxf3+ 29.Kxf3 Bxd2

A.2) 27.Re2 Rxd2 28.Bxb7 Rxe2+ (28.Rxd2 transposes to A.1)

B) 26.Bxb7 Rxc2

C) 26.Rb2 Rxd2+ 27.Rxd2 Bxf3+ 28.Kxf3 Bxd2


Looking at <agb2002>'s analysis I can see that I missed a few possible defenses. Line D seems to be incorrect. After 26.Rec1 Bxf3+, 27.Nxf3 let's white off the hook. In that line I like 26...Rxc2 27.Rxc2 Rxd2+ 28.Rxd2 Bxf3+ 29.Kxf3 Bxd2 best.

Premium Chessgames Member
  kevin86: I missed this one...Black sets up a double attack to win a piece.
Premium Chessgames Member
  DarthStapler: Got it
Dec-21-10  VincentL: For me this was not so easy today, but I think I now see the solution. 25.....Bb4 wins a piece (other moves do not result in material or other gain).

After (a) 26. Rxc8 bxc8 white will lose the knight on d2.

(b) 26. Rec1 Rxc2 27. Rxc2 Rxd2+ 28. Rxd2 Bxf3+ 29. Kxf3 Bxd2 and black emerges a bishop up

(c) 26. Ne4 Rxc2+ winning a rook

(d) 26. Nc4 Bxf3+ 27. Kxf3 Bxe1 again winning a rook.

Other white moves are no better.

Time to check.

Dec-21-10  BOSTER: In this position black take the advantage using unprotected white rook on c2 and that white knight d2 and rook on e1 are on the same diagonal,or using another words this position "emphasises the lack of mutual understanding among the white pieces". So...Bb4 and black wins a piece.
Premium Chessgames Member
  Jimfromprovidence: Another answer to the defense 26 Rec1 is 26.. Rxd2+.

click for larger view

The exposed king position really hurts because by taking with check black forces 27 Rxd2, instead of the piece saving 27 Rxc8+.

Now, black wins a piece after 27..Bxd2.

click for larger view

Premium Chessgames Member
  agb2002: <Patriot: ...

Looking at <agb2002>'s analysis I can see that I missed a few possible defenses. Line D seems to be incorrect. After 26.Rec1 Bxf3+, 27.Nxf3 let's white off the hook. In that line I like 26...Rxc2 27.Rxc2 Rxd2+ 28.Rxd2 Bxf3+ 29.Kxf3 Bxd2 best. >

You're right. Thanks for pointing that out!

Premium Chessgames Member
  dzechiel: <Patriot: ...

A) 26.Rxc8 Bxc8

A.1) 27.Rd1 Rxd2+ 28.Rxd2 Bxf3+ 29.Kxf3 Bxd2>

Line A.1 is suspect. You have the black bishop capturing on move 26 at c8, and on move 28 at f3. Of course, these are mutually exclusive.

Dec-21-10  rilkefan: I wondered about 13.Rfe1 to push e5 but ...dxc3 14.bxc3 Qa5 looks good for black. Maybe 10.Re1 instead of Qc2? Or back all the way to 6.c3?
Dec-21-10  gropek: Black to play

J Lynch vs Michel

25. ... ?

Difficulty: Easy

Material is even,
but black has the bishop pair.

First I thought that Rxd2+ would be the answer,
but after some analysis I saw that black wouldn`t
win material.

Then, after some careful thought, I think I found the winning move:

25. ... Bb4!

With double attack on the rook and knight.

It seems to me that white cannot avoid losing


Time to check and see if i`m missing something.

Dec-21-10  Patriot: <dzechiel> You're right. It should end with 28...Bxd2. Too many similar sequences!


Dec-21-10  TheaN: <Once> just plain brilliant. Just because of that post, I will not blindly post my analysis today; the bottom line: it took me way too long to solve. In the end, chess starts with imbalance... hm I should note that down somewhere ^^.
Dec-21-10  wals: 25...Bb4, O.K. 26.Rxc8. O.K.
26...Rxc8 not O.K, and indeed a blunder. Heading for Rc2, with Nd2 attacked twice and Re1 pinned but ignored Re4. So life goes on.

Rybka 4 x 64 blunders only

WHITE: depth : 22 : 5 min :
(-3.70):25.e5. Best, Nc4, =-0.42.

1. (-0.42): 25.Nc4 g5 26.e5 Ba6 27.Rd1 Rxd1 28.Bxd1 gxf4 29.gxf4 Rd8 30.Bf3 Bxc4 31.bxc4 Rd4 32.Kg3

2. (-0.53): 25.Re2 g5 26.Nc4 Kg7 27.h4 gxh4 28.gxh4 Ba6 29.Kh3 Rd4 30.Re1 Bxc4 31.Rxc4

Just the one blunder, but enough to ruin White's day.

Had the game continued.....

Rybka 4 x64: d: 24 : 7 min :

1. (-4.17): 28.Rxd2 Bxd2 29.Bc6 Bb4 30.Kf3 f5[] 31.Bb5 Bb7+ 32.Ke2 Kf7 33.h4 Be4 34.Bc4 Ba3 35.Kd2 Bb1 36.Be2 Bc5 37.Bf3 Bxa2 38.Kc2 Bd4 39.Kd3 Bf2 40.Kc2

Dec-21-10  EXIDE: I went 25.--,RxN+,26. RxR,BxB+, 27. KxB,Bb4 and wins the exchange. I think that will win the game for black.
Dec-21-10  Patriot: <<EXIDE>: I went 25.--,RxN+,26. RxR,BxB+, 27. KxB,Bb4 and wins the exchange. I think that will win the game for black.>

You're not winning the exchange because you gave up the exchange.

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