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Arik Braun vs Sebastian Siebrecht
Operation Capablanca (2005), Vienna AUT, rd 2
Semi-Slav Defense: Chigorin Defense (D46)  ·  1-0


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Kibitzer's Corner
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Premium Chessgames Member
  Domdaniel: I found ...Bd7 and ...Re1+ without too much trouble, though I'm sure I'd also have gone wrong in an OTB game under time pressure.

Since Black's Queen and Rook can do nothing at once, and White is threatening mate, the answer must lie with the doomed bishop on c8. And it turns out that on d7 it blocks white's attack just enough to give black a perpetual.

Premium Chessgames Member
  whiteshark: <Operation Capablanca 2005> Oops!
Dec-27-09  WhiteRook48: didn't find that either
Premium Chessgames Member
  chrisowen: Sad case of Braun over brain. Deflect the white attack padding off the rook's entrance point. Cover d8 via Bd7 then sweep the queen in and give perpetual checks. All good in theory but does it work in practice? A broad display to trot over the queen but it was a stain then missing Re1+ which I did. Der.. ban my tea until i stump up the full solution next time.
Premium Chessgames Member
  sethoflagos: Well I found 36 ... Bd7 as the only continuation with a prayer.

I also had a good look at the rook sac on e1.

Pity I didn't manage to put them together :(

Premium Chessgames Member
  johnlspouge: Sunday (Insane):

A Braun vs S Siebrecht, 2005 (36….?)

Black to play and draw.

Material: Up 2 P, but under an immediate threat, 37.Rd8+ Qxd8 38.Qxd8+ K any 39.Qxc8, so any candidate must have defensive qualities. There is no stalemate possibility. The White Ke2 has 2 legal moves and is vulnerable to checks from Qf6 and Rg1, none of which seems productive.

Candidates (36…): Bd7, Qe7

[36…Bd7 37.Rxd7 looks grim]

[36...Qe7 37.Qxc8+ Kf7 38.Rd7 looks equally grim]

I missed the “saving grace”.

Dec-27-09  Marmot PFL: 36...Bd7 was not so hard to find, as others lose quickly. Did not see the rook sac at that point, but did 2 moves later.
Dec-27-09  lost in space: It took me while to see how black can safe the draw. Blacks first move must somehow cover the white threats, eg. 37. Rd8+ with either mate or big material advantage.

36...Bd7 37. Rxd7
(37. Qxd7 leads to a perp after 37...Qe5+)

37...Qb2+ 38. Rd2 Re1! and there is no way for white to avoid a perp.

Dec-27-09  lost in space: Operation Capablanca?!

I know operation mindcrime.

Dec-27-09  eric the Baptist: It's a bit silly when you don't even know what the move is supposed to accomplish. Win? Lose? Draw? I can find plenty of losing moves for black! They do this all the time, and it is very confusing as we naturally assume we are to be finding a win. Whoever sets up these puzzles MUST indicate what our aim is supposed to be.
Dec-27-09  Eduardo Leon: <eric the Baptist>, in a real game, nobody is going to tell you whether you can win or the best you can achieve is a draw.
Dec-27-09  eric the Baptist: Again, one day it's one thing, another it's the next. Are you saying I'm supposed to assume I need to find a way to lose sometimes? It's only natural to think you have to find the WINNING move. A desperation draw maybe; but finding a way to lose is ridiculous.
Premium Chessgames Member
  dzechiel: <eric the Baptist: ... Whoever sets up these puzzles MUST indicate what our aim is supposed to be.>

Eric - the position of the day is always taken from an actual game, not some artificial "mate-in-three". Your aim for these positions (as in one of your own games) is to analyze the position and from that analysis determine your goal and the best move to make to achieve that goal.

Determining whether you are playing for a win or a draw is part of the problem.

Premium Chessgames Member
  Once: <eric the Baptist> The objective for each puzzle is to find the best move. This might be a winning move or a drawing move, or in some cases it might be a desparado. Part of the challenge is to work out whether you are winning or losing, so that you know what kind of move you are looking for.
Premium Chessgames Member
  dzechiel: I think Eric's complaint here might be that black went on to lose this game, by failing to find 38...Re1+.

Of course, our task it to find the best move in the position, even if the player in the actual game didn't.

Premium Chessgames Member
  agb2002: White is two pawns down but threatens 37.Rd8+ and 37.Qxc8+. The white queen stops 36... Qe5+ and the white rook controls b2. These details suggest 36... Bd7, delaying momentarily both threats and inviting White to allow some checks:

A) 37.Rxd7 Qb2+

A.1) 38.Rd2 Re1+

A.1.a) 39.Kxe1 Qxb1+ 40.Rd1 (40.Ke2 Qe4+ forces perpetual) Qe4+ 41.Kd2 (41.Kf1 Qh1+ 42.Ke2 Qe4+ repeats the position) Qd4+ and perpetual.

A.1.b) 39.Kd3 Qxb1+ looks very risky for White.

A.1.c) 39.Kf3 Qf6+

A.1.c.i) 40.Qf4 Qxf4+ 41.Kxf4 Rxb1 - +.

A.1.c.ii) 40.Kg4 Kg1+ 41.Kh3 (41.Qg3 Qg5+ 42.Kf(h)3 Rxg3+ 43.fxg3 Qxd2 - +) Qf3+ and mate next.

A.1.c.iii) 40.Kg2(3) Qg5+ 41.Qg3 (41.Kf3 Qxd2 42.Bxg6 Qc3+ 43.Kg2 Qf6 - + [R+P vs B]) Qxg3+ and 42... Rxb1 - +.

A.2) 38.Kf3 Qf6+ looks similar to previous lines.

A.3) 38.Ke3 Re1+ with the same conclusion.

A.4) 38.Kd3 Qxb1+ looks dangerous for White.

B) 37.Qxd7 Qe5+

B.1) 38.Be4 Qxe4#.

B.2) 38.Kd3 Rxb1 and the king blocks his own rook.

B.3) 38.Kf3 Qf6+ seems to repeat positions.

C) 37.Qb8+ Be8 and Black seems to hold.

Premium Chessgames Member
  OhioChessFan: <dz: Of course, our task it to find the best move in the position, even if the player in the actual game didn't.>

We've had a couple of those this week. It's in fact far easier from our end than the poor player OTB, who isn't alerted of an immediate important/necessary move.

Dec-27-09  SufferingBruin: 1000 rating, trying to get better.

Belated thanks to all who made book recommendations a couple of days back. The consensus seems to be that Chernev's "Logical Chess" is the best gift for folks at my level. My students and I are very grateful for the recommendations. We're going to be using club money to purchase a few copies and I'll let y'all know how it goes. Thanks again.

Okay, the insane position a.k.a. <yet another beautiful Southern California morning shot to hell for SufferingBruin>. Black is up two pawns but is nervous--the rook will penetrate the back rank and I don't see a power in this world that will save the bishop along with the suffering of some macho checks.

What to do... what to do...

My "E" instincts say take the bishop and if it doesn't work, oh well. But I've got the morning, a good part of the afternoon... and what about that flippant comment I just made, that the rook will penetrate the back rank? If it's so bad, why not stop it? It's not the like the vicar will live long anyway. Therefore...

36... Bd7
37 Rxd7

Well. I really better find a way to mate soon, no?

37... Qb2+
38 Rd2 Qb5
39 Kf3 = nada good.

Okay, I can't win. But the white rook really cannot be allowed to penetrate the back rank. I'm disappointed I can't win as I'm up material but I can't panic or stress over other moves that I may have made earlier to get into this mess. We'll try Bd7 and go for the perpetual.

36... Bd7
37 Rxd7 Re1+ (keep the king as far back as possible) 38 Kxe1 Qc4+
39 Ke2 Qc3+
40 Kg2 and I'm busted.

But I like ♖e1+. And I like ♕b2+. What's the saying, "patzer sees a check, patzer plays a check?" Well, dammit, I'm a patzer! Intuitively, I think if I combine the two, I might have something.

36... Bd7
37 Rxd7 Qb2+
38 Rd2 Re1+
39 Kxe1 Qxb1+
40 Rd1 Qe4+

The white rook can no longer block and I can keep on checking until Christmas, 2010.

Look, the only reason why I found this was because it's "player misses opportunity to draw" week. Still... :)

Dec-27-09  SufferingBruin: <(I swear that pieces get physically taller the further up the board they go)>

This has been another edition of my being jealous of a great line by Once.

Premium Chessgames Member
  gofer: I would recon that black is hoping for a draw by perpetual check. Along the lines of ...

36 ... Bd7
37 Rxd7 Qb2+
38 Rd2 Re1+
39 Kxe1 Qxb1+
40 Ke2

and now white has perpetual check on e4, h1 and b1

But there are losts of ways to avoid this, but definitely black has to play 40 ... Bd7 first! Anything else is either suicide or allows, Qxc8+ or Rd8+ winning.

Time to check...

Dec-27-09  TheaN: <SB: <Once: (I swear that pieces get physically taller the further up the board they go)>

This has been another edition of my being jealous of a great line by Once.>

Ditto that.... really how do you come up with this stuff Once :P?

Premium Chessgames Member
  patzer2: Several posters have indicated Black can draw after 37. Qxd7 Qe5+. However Fritz 10 is indicating it's a win for Black after 37. Qxd7?? Qe5+ 38. Kf3 (38. Kd3 Rxb1 ) 38...Qh5+! (-2.97 @ 18 depth).
Dec-28-09  RandomVisitor: After 26.Qd3, 26...h4 is losing. Better perhaps was:

click for larger view

Rybka 3:

<[+0.08] d=24 26...Kf8> 27.Ne5 Qg7 28.Rb3 h4 29.a3 Ke8 30.Rc3 f6 31.Nc4 hxg3 32.fxg3 Kd8 33.Bc2 R4a6 34.Re2 Bd7 35.Rb3 R6a7 36.Rc3

[+0.00] d=23 26...Ra3 27.Rb3 Rxb3 28.Qxb3 Kf8 29.Qd1 Qg7 30.Kh2 Ra5 31.a4 f5 32.Ne5 h4 33.gxh4 Rxc5 34.dxc5 Bxe5+ 35.Kh3 Bd4 36.Rg3 Qf6 37.Qc2 f4

Premium Chessgames Member
  Once: <SufferingBruin> A mad thought occurs...

I have been thinking for some time of writing a chess book - an extension of the columns that I write for the British "Chess" magazine. It would be a guide for players who know the basic moves but want to get to a higher standard - say, from beginner to strong club standard. I'll base it on tactical puzzles and annotated games.

You are looking for material to use with your students...

Perhaps there is a chance for some joint working here? I'll write up some sample text, post it on my forum and you and your students let me know what you think of it? How does that sound?

<TheaN: how do you come up with this stuff Once :P?>

I guess I am more a frustrated writer than a good chess player. In an OTB game, when I should be analysing variations, my silly left-wired brain will be off on a irrelevant day-dream. And, of course, I get lots of practice with my writing yakking on

Premium Chessgames Member
  OhioChessFan: <Patzer: Several posters have indicated Black can draw after 37. Qxd7 Qe5+. However Fritz 10 is indicating it's a win for Black after 37. Qxd7?? Qe5+ 38. Kf3 (38. Kd3 Rxb1 ) 38...Qh5+! (-2.97 @ 18 depth). >

Sure you have the right position? I tossed it in Fritz and he says 0.00 immediately.

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