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Silvino Garcia Martinez vs Anatoly Karpov
Madrid (1973), Madrid ESP, rd 8, Dec-05
Sicilian Defense: Kan. Modern Variation (B42)  ·  0-1
ANALYSIS [x]

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Kibitzer's Corner
Apr-12-07
Premium Chessgames Member
  Honza Cervenka: Why not 46...Bxe5?
Nov-01-08  gambitfan: <Honza Cervenka: Why not 46...♗xe5?>

46... ♗xe5 47 ♖a5


click for larger view

after 47 ♖a5

Black ♗e5 is pinned by the White ♖a5 and cannot be protected by any Black piece ; therefore it is lost !

Nov-01-08  hcgflynn: <gambitfan>: 47. bd5? or 47. rg3+ and after re3 and kxh4?
Nov-01-08  gambitfan: Addendum :

Black might be wanting to interpose ♗d5 apparently protected by ♙e6

47... ♗d5 48 ♖x♗d5! e6x♖d5 49 ♖f5+ ... 50 ♖x♗e5

And White just won the quality : ♗♗ // ♖

White have now ♖ + ♙♙ against ♖ + ♙, which gives them good chances to win or at least to draw...

Nov-01-08
Premium Chessgames Member
  SwitchingQuylthulg: <gambitfan> It would appear that, in spite of your long stay at CG.com, you haven't yet learned the Basic CG.com Rule #1: <Honza Is Never Wrong>. (If Honza suggests a move that computer analysis doesn't find optimal, you know it's time to buy a better computer.)

There is no refutation of 46...Bxe5 - if 46...Bxe5 47.Ra5 Rg3+ 48.Kh2 Bd5, not only is White threatened by a killing discovered check (if 49.Rxd5 exd5 50.Rf5+ Rg5+!), but the h4-pawn is also going to drop.

Nov-01-08  gambitfan: < hcgflynn: 47... ♗d5 or 47... ♖g3+ 48 ♔h2 ♖e3+dec 49 ... ♔xh4 >

I answered by anticipation your first proposal 47... ♗d5 : no good ! White win the quality ♗♗ // ♖

Let's have a look at your second proposal

47... ♖g3+ 48 ♔h2 ♖e3+dec 49 ... ♔xh4

After 47... ♗d5 or 47... ♖g3+ 48 ♔h2 ♖e3+dec White are to move :


click for larger view

What do you think of 49 ♖f4! ?

Now Black are to play...


click for larger view

With 49 ♖f4! White interpose ♖f4 exploiting the pinning of ♗e5 and protecting ♙h4 no loger protected bi White ♔

Nov-01-08  gambitfan: In short, looking at my last diagram, we can see that 49 ♖f4!

1. interposes ♖f4 between the pinned ♗e5 which cannot take ♖ and ♖h2

2. protects ♙h4

3. threatens ♗c4 (but ♗f4 is also pinned

As long as ♗e5 is pinned White ♔ can walk on dark squares...

What can Black do ?

49... ♖e2 50 ♔g1 (now ♖f4 is un-pinned) ♖e1+ 51 ♔f2


click for larger view

Black are to play...

Nov-01-08  gambitfan: Conclusion : thanks to the brilliant move 49 ♖f4! Black lost at least the quality ♗♗ against ♖ and at worst a ♗.

Do not you agree ?

Nov-01-08  gambitfan: And I have no computer ! All these modest reflexions are the pure product of my brain...

And no human being is infaillible, even the Pope !

In conclmusion, Karpov was right to play 46... ♗h6 and not 46... ♗xe5

Nov-01-08  hcgflynn: <gambitfan>:46. - bxe5 47. ra5 bd5 48. rxd5 rg3+ 49. kh2 exd5 and now if 50. rf5+ then rg5+!

or:

46. - bxe5 47. ra5 rg3+ 48. kh2 re3+ 49. rf4 bd5 and now what?

Nov-01-08  gambitfan: <hcgflynn: 46... ♗xe5 47. ♖a5 ♗d5 48. ♖xd5 ♖g3+ 49. ♔h2 exd5 and now if 50. ♖f5+ then ♖g5+!

or:

46... ♗xe5 47. ♖a5 ♖g3+ 48. ♔h2 ♖e3+ 49. ♖f4 ♗d5 >

OK. Brilliant.

Karpov should have played 46... ♗xe5

Nov-02-08  gambitfan: ENDGAME :

♗♗ + ♙ (7.5 points) // ♖ + ♙♙ (7 points)

♗♗ + ♙ prevailed over ♖ + ♙♙


click for larger view

61 ♔xg2...

After 7 moves we have :


click for larger view

68... ♗e7

0-1

The truth is that I do not see very clearly the gain for Black...

It seems pretty obvious that White are losing ♙b7 but I do not see any clear reason for White to resign at this stage of the game...

Who can help me understand ?

Nov-02-08  gambitfan: After 68... ♗e7 we have ♗♗ + ♙ (7.5) // ♖ + ♙ (6)

Endgame Explorer gives : 30 games / 53% wins / 47% draws

After almost sure pawn's loss by White we have ♗♗ + ♙ // ♖

Endgame explorer gives 15 games / 80% wins / 20% draws

All these elements don't tell me why White resigned as early as the 59th move...

Nov-02-08
Premium Chessgames Member
  Eyal: <gambitfan> Perhaps Garcia-Martinez could have tested Karpov's technique for a bit, but after 68...Be7 it's clear White is going to lose his last pawn (Bd6 is coming, and 69.Re8 doesn't help because of a bishop check on c5 or h4), and once that happens it's definitely a theoretical win for Black - if he coordinates his king and bishop pair correctly, White cannot stop the e-pawn from queening. Since it's no more than 6 pieces, you can check this out with a tablebase (http://www.k4it.de/index.php?topic=...)
Nov-02-08  gambitfan: <Eyal>

Thanks for your comment...

I checked with the link you gave me...

They say "White lose in 35 moves!"

Not such a quick loss !

Nov-02-08  gambitfan: @ Eyal

Have a look at this game :

D Gurevich vs K Gudmundsson, 1982

78th move : White obtain ♗♗ + ♙ // ♖

It took White as many as 47 moves to win the game - resignation by Black at the 125th move !

♗♗ + ♙ // ♖ may well be a "theoretical win" ; if it took 47 moves to win, it is very close to a Draw...

Nov-02-08
Premium Chessgames Member
  Eyal: <They say "White lose in 35 moves!"

Not such a quick loss!>

Yeah, but you should remember that the 50 moves rule doesn't apply here, as long as there are pawn moves thrown in once in a while... so in fact there's a very wide margin of error for the side with the pawn. And the basic technique of coordinating the BB+K and pushing forward the pawn isn't so difficult, I think, even it takes a bit of time. The end of this Gurevich vs Gudmundsson game, btw, looks a bit strange - it seems that White could have done it much quicker...

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