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Miguel Najdorf vs Samuel Schweber
Seniors-Juniors (1968), Buenos Aires ARG, rd 2, Jun-??
Nimzo-Indian Defense: Normal Variation. Gligoric System Exchange at c4 (E54)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Sep-01-06  kinghunt72: What's with 14... h6? He was probably trying tro prevent 15. Bg5, but a much better move would have been to develop, 14... Nc6. According to my program, once the analysis continues, Black wins with an extra rook and pawn.
Sep-01-06  Counterpoint: What about 19.Qe5!

19...Nf6 20.Rd8+ Kh7 (20...Rxe8 21.Qxc5!) 21.Bb1+ g6 22.Qxf6

19...Kf8 20.Qxg7+ Ke8 21.Bxd5 exd5 22.Bf6

19...f6 20.Qxe6+ Kh8 21.Bxd5

Sep-01-06  tallinn1: After 20. ... Qf8 21. Bxg7! h5! the black king is facing a strong attack by all white major pieces: 22. Qxh5! Kxg7 (Qxg7 23. Rxd5 f6 24. Rd3 is worse) 23. Qg4+ Kh7 24. Rxd5 Rc6 25. Rh5+ Rh6 26. Rae1! (now the dynamic material advantage of white becomes obvious - black cannot avoid queen loss without giving the piece back)

This was in fact the way Fritz8 defended itself. It continued 26. ... Nd7 27. Rxh6 Qxh6 28. Qxd7

I did not see all consequences of Qxh5 but got the feeling that with the black king exposed and two pieces of black not participating in the game that sac is justified. No risk, no fun.

Sep-01-06  moppa: Counterpoint, 19.Qe5 leaves Nxc3 for black.

I had Rxd5 exd5 Qg4 g6 Bxd5 :(

Sep-01-06  renton: what about 20 ...f6!? as a defence?
if 21 Bf6 Rc7 and if 21 Rd5 Qd5 22 Qc8 Kh7 23 Re1 b6!? idea Nd7 - it's prob no good but looks better than the game - i don't have an engine so would be interested to know (-:
Sep-01-06  EmperorAtahualpa: I found the first four half-moves of this combination, but did not spot 21.Rxd5! I was thinking 21.Bb4. Still, not bad for my standards on a Friday!
Sep-01-06  zb2cr: Did not see the defence 20. ... Qf8 or the follow-up 21. Bb4, so I guess I can't take credit.

<Calculon>, you're correct for the follow-up. I think Black's best is then 24. ... Qxc5; 25. Bxc5, Rxc5 when he's down by Rook and Knight vs. Queen.

Sep-01-06  spinstal88: <renton> if 20 ...f6 then white has 21.Bxf6 (becuase the g pawn is pinned by the queen on g4,then probably),Qf8 22.Rxd5 and white wins
Sep-01-06  renton: yeah but the point is 21. Bxf6 Rc7!?
Sep-01-06  spinstal88: 20...f6 21.Bxf6 Rc7 22.Qe6+ Kh7 23.Be5 Qe7 24.Qxd5 Rd7 25.Bd6 Qe7 26. Qc5 (white is up a pawn and ahead in development and has a safer king)
Sep-01-06  unsound: <zb2cr> I think it's even worse than that for black; after 26 Re8+ and then 27 Qd4 picks up the rook whether the black king goes to g7 or h7.
Sep-01-06  think: My solution was taking with the rook immediately on d5. 19. Rxd5 exd5
20. Qg4 g6
21. Bxd5 and now white is threatening both Qxc8 and Qxg6+. Anything wrong with that?
Sep-01-06  Calculon: <zb2cr>Yes, and after the rook moves to the 8th rank, black's knight and rook are neutralized; I think the knight is lost.
Sep-01-06  YouRang: Hmmm, 19. Bxd5 exd5 20. Qg4 was one of the lines I considered, but I didn't see it leading to any forced result after 20...Qf8 (as <chessmoron> mentioned above). Meanwhile, it appears that Black blundered with 20...g6.

So, is the puzzle a little bit flawed, perhaps?

Sep-01-06
Premium Chessgames Member
  Marius: < Counterpoint > Qf8 defend it i think but 19... Nxc3 20.Rd8+ Kh7 21.Qxc5 Rxc5 22.bxc3 seems to win the a8 rook
Sep-01-06
Premium Chessgames Member
  kevin86: I had <counterpoint>'s move and missed 19...♘xc3.

The 20th move in the text is neat:It attack two pawns:at g7 and d5-black's game is smashed afterward.

Sep-01-06
Premium Chessgames Member
  Marius: < Counterpoint > 19...Nxc3 wins the pinned knight but black have two black pawns rolling to the promotion, difficult to stop
Sep-01-06  NateDawg: According to analysis by Fritz 9 and Crafty 19.19, Black should play 20...♕f8. After 21. ♗xg7!, Black must respond 21...h5. After 22. ♕xh5 ♔xg7, the obvious 23. ♖xd4?! is surprisingly not best and allows Black to achieve an almost equal ( ) position after 23...♖c6. White should instead play 23. ♕g4+! as tallinn1 pointed out. White then has an unstoppable attack. Analysis continues 23...♔h7 24. ♕h3+ ♔g7 25. ♖xd5 ♖c6 26. ♖h5 ♕g8 27. ♖d1 ♘a6 28. ♖g5+ ♖g6 (Kf8, sacrificing the Queen, is probably better, but White wins easily then too) 29. ♖xg6+ ♔xg6.


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Now White forces mate with his Queen and Rook. 30. ♖d6+ f6 31. ♕g4+ ♔f7 32. ♕d7+ ♔g6 33. ♖d3 ♔h6 34. ♖h3+ ♔g5 35. ♖g3+ ♔f4 36. ♕d6+ ♔e4 37. ♖e3+ ♔f5 38. ♖f3+ ♔g4 39. ♕xf6 ♖e8 40. ♕f5+ ♔h4 41. ♖h3#

Sep-01-06  Trouble: i liked this problem
Sep-01-06  NateDawg: <think> After 19. ♖xd5? exd5 20. ♕g4, if Black responded 20...g6? then White could indeed play 21. ♗xd5, and after 21...♖c6 he could obtain a large advantage with 22. ♕f3 ♕f8 23. ♖d1! ♔h7! (preventing mate in 7) 24. ♗xf7 ♕e7 25. ♗xg6+! ♖xg6 26. ♖d8!!


click for larger view

Black cannot play 26...♕xd8?? because of 27. ♕f7+ ♖g7 ♕xf7# and must instead play 26...♘c6 or 26...♘d7 as all other moves lead to a forced checkmate. After 27. ♖xa8 White has regained the sacrificed material and is two pawns up with a dominating position (+6.63).

However, Black can play 20...d4!. If White plays 21. ♗xd4?, Black has 21...♕c1+ 22. ♕d1 ♕xd1+ 23. ♖xd1 ♖d8 and White has almost no compensation for the exchange (-1.99). 21. ♕xd4 ♕xd4 22. ♗xd4 ♘c6 is a similar story. No matter what White does, he has little to no compensation for the exchange.

Sep-01-06  kinghunt72: <Counterpoint> 19. Qe5 only loses a pawn to 19...Nxc3 20. Qxc5 Rxc5 21. bxc3 Rxc3.
Sep-01-06  renton: the problem is that this isn't a problem - 19 Bxd5 exd5 20 Qg4 Qf8
Sep-01-06  GoldenKnight: This is only a cursory glance, but I had 20. Qe5 which I think is also decisive. But I also like Najdorf's 20. Qd4. It may even be better.
Sep-01-06  Chess Classics: Interesting puzzle-I missed it, but hey, it's friday. Right? Right.

If you liked this game, you might also like E Z Adams vs Carlos Torre, 1920

Regards,
CC

Sep-03-06
Premium Chessgames Member
  patzer2: The puzzle solution 19. Bxd5! wins a pawn with a strong positional advantage after 19...exd5 20. Qg4 Qf8 21. Rxd5! . However, after the "natural 20...g6??" White overwhelms the weakened Black castled position, as 21. Rxd5! now creates decisive threats.
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