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Julio Leonardo Boudy Bueno vs Laszlo Szabo
Varna (1979)
Sicilian Defense: Classical Variation. General (B56)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Apr-06-07  Fisheremon: 24...Rxb2 could be a very nice sac, but Black spoiled the combo on the way: 27...Qe7??. The game went further quite funny (perhaps because of Zeitnot!?): 30.Rh4? (c4! winning), after this the position was probably drawn, still required Black with more accurate play, and he admitted 38...Qc6? In his turn White missed four chances to finish the game sooner: 41.f5!, 43.f6!, 49.Kc7! and finally 51.Bb6!. Indeed 51.Kf4? leading to a draw as 53...Qb8+ could do, but Black played 53...Qd7?! Again 54.Ke5? allowing one more chance to draw, but 55...Qc6?! (55...Qb5+! could do). Some more moments like that:

56.Rg7+?! (56.cxd4!?)

57...Ke8? (57...Kg8!?)

59.Re7+?! (59.d5!)

61...Ke8? (61...Kg8!?)

62.Re7+?! (62.Rc7!)

68...Qd4? (68...Qc5!?)

69.Rf1?! (69.Rf3!?)

72...Qe4? - the last mistake (72...Qd7!?).

A game after 27 move full of inaccuracies was going under motto "Who mistakes last?!"

Apr-06-07  mikejaqua: I thought Rxb2 and Ba3 were the moves to make, but I couldn't see how to continure. Apparently neither could Julio. He ended up getting his Boudy kicked.
Apr-06-07
Premium Chessgames Member
  kevin86: Another "impossible" puzzle. It looks like black had a neat sac sequence,but blew the game later. It is unclear if 27...♕b2+ is the knockout punch that many say it is.
Apr-06-07  MostlyAverageJoe: <kevin86: It is unclear if 27...b2+ is the knockout punch>

It is very clear, read <chessmoron>'s line. If you have any escape for white, please post it.

Apr-06-07  YouRang: Well, I had a hunch that it would be a queenside attack, which at some point would include ...Ba3+.

Do I get any points for that? :-|

Apr-06-07  panthercat: <chessmoron> Perhaps I'm not following correctly (don't have a board in front of me), but why after 27...Qb2+ 28. Ka4 a5 is 29.Nf6+ forced? From what I can tell, there is no threat of mate on b4 because of the Be1.
Apr-06-07
Premium Chessgames Member
  playground player: I tried and tried, but just couldn't get Rxb2 to lead to a win for Black. The move looks great, but the attack runs out of gas. However, Qd4 could have been the start of something big...
Apr-06-07  Kings Indian: I found Rxb2, Ba3+ and Rb8+ but couldn't find a sure winning line after that. Oh well.
Apr-06-07  TopaLove: <gambitfan> it would be nice to say Puzzle of the day(Fri 06/04/2007) - move 24 - black to move. Just a suggestion.
Apr-06-07  newton296: found rxb2 but didnt see the 27) qb2+ follow up which finishes white off so i looked at bb4 or ba3 and figured black has a plus and little risk but cant find a win for black unless white foolishly plays nxe4. so I gave up.
Apr-06-07  HelaNubo: <panthercat: <chessmoron> Perhaps I'm not following correctly (don't have a board in front of me), but why after 27...Qb2+ 28. Ka4 a5 is 29.Nf6+ forced? From what I can tell, there is no threat of mate on b4 because of the Be1.> The threat is not that of a mate on b4, but of a check in a2, eg: 29. Qc3 Qxa2+ 30. Qa3 Qc4+ and mate in 3.
Apr-06-07  Dick Brain: The reason for playing 28...a5 is to prevent White from saving his hide by giving up his queen with Qb3. After 28...a5 29. Qb3 Rxb3 will leads immediately to CHECKMATE because square b4 is covered by the pawn.

I think also 28...c5 achieves the same though there might be a flaw in it somewhere.

Apr-06-07  Hossam Hassan: Chessgames.com I think it is a mistake here to give the name of Laszlo Szabo ..because it was Julius Zsabo who played this tournament Varna 18th in 1979 according to Mega Database2006..Im sure that you will correct that ..by the way..Chessgames.com is my homebage since November 2004 ..more than 2 years
Apr-06-07  MostlyAverageJoe: The puzzle position should have been set one move later, not as <24. ...?>, but as <25. ...?>.

24 ... Rxb2 is a strong move, definitely, but the response is a blunder. Instead of 25.Kxb2??, white should have declined the sacrifice.

I've been running HIARCS 11.1 on this line: 25. Nxe4 dxe4 26.Bc3 since morning at 20 minutes per move until move 32, then accelerated it a bit. Right now, the engine is seeing only 0.64 advantage for black at move 45 ...

I'll re-run it on my faster machine starting at <25. ...?> to confirm.

Apr-06-07  Hossam Hassan: Also....I m sure it was difficult cause there are more than 70 players named "Szabo"
Apr-06-07  rotgut: Nobody seems to have mentioned 27...♕b2+ 28 ♔a4 ♕xa2+ 29 ♕a3 ♕xc2+, then 30 ♕b3 ♕xa3# or 30 ♔a5 ♖b5#. Unless I'm missing something (doing this in my head just before dashing off...).
Apr-07-07  MostlyAverageJoe: HIARCS's final analysis (100 minutes to find the best move) shows this as the best defense line for the white after 24. ... Rxb2:

25. Nxe4 dxe4 26. Bc3 Ba3 27. Bxf6 Rb3+ 28. Bb2 Bxb2+ 29. Kb1 Rxh3 30. Kxb2 Rxh2 31. f5 Re2 32. Kc3 c5 33. Rh4 e3 34. Kd3 Rf2 35. Re1 R8xf5 36. Rxe3

and this final position:


click for larger view

OK, still some advantage for the black, but nothing really crushing....

Apr-07-07  MostlyAverageJoe: <rotgut> 30. Ka5 Rb5+ does not mate, because of 31. Kxa6 etc.
Apr-07-07
Premium Chessgames Member
  Richard Taylor: I though the win involved 24 ..Rxb2+ and then Rb8+ etc
Apr-07-07
Premium Chessgames Member
  Richard Taylor: If 25 ...Rxb2 26 Kxb2 Rb8+ when there are 2 alternatives

If A 27 ..Kc8 28 Qd4 threatns mate in one

If B 27 ... Ka1 28 Bb4 looked winning.

There are some complex lines

Apr-07-07
Premium Chessgames Member
  Richard Taylor: But I see now that Qd4 fails to 29 Qd3 defending everything... so it goes. Right ideas wrong time!

Be useful if it said: "How did Szabo start a fascinating attack but one in which this time he underestimated his opponents defences?" This is instructive. one still admires Szabo's temerity. Many of his combinations were brilliant AND accurate.

Such of course is life and chess!

Apr-07-07  Fisheremon: <MostlyAverageJoe: HIARCS's final analysis (100 minutes to find the best move) shows this as the best defense line for the white after 24. ... Rxb2:

25. Nxe4 dxe4 26. Bc3 Ba3 27. Bxf6 Rb3+ 28. Bb2 Bxb2+ 29. Kb1 Rxh3 30. Kxb2 Rxh2 31. f5 Re2 32. Kc3 c5 33. Rh4 e3 34. Kd3 Rf2 35. Re1 R8xf5 36. Rxe3> Good find! In view of this I propose 24...Be5!?, and if 25.f5 then 25...Rxb2!, e.g. 26.Nxe4 dxe4 27.Rxe4 Rfb8 28.Qe3 Qd8 29.Bb4 Bf6 30.Re1 Bg5 winning in the endgame.

Apr-07-07  ALEXIN: Can somebody explain me why that puzzle involves searching the black 24 th move if in fact white won that game?
Apr-07-07  Fisheremon: <ALEXIN: Can somebody explain me why that puzzle involves searching the black 24 th move if in fact white won that game?> Pls see my posters.
Apr-08-07  MostlyAverageJoe: <ALEXIN> As an alternate explanation to Fisheremon's posts, I see this as a very 'human-oriented' puzzle: what move to make to invite the opponent to making a bad response.

The 25th and 26th moves by white have doomed the game, and they really look very reasonable, since two consecutive sacrifices are rather rare. Here, after 26.Kxa3, white should've lost, and even more so after 27th move, as shown by others.

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