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Vasily Smyslov vs Jorge Rubinetti
Palma de Mallorca Interzonal (1970), Palma de Mallorca ESP, rd 21, Dec-08
Catalan Opening: Closed Variation (E08)  ·  1-0



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sac: 41.Rxh7+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
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Feb-11-06  sagahelten: patzer2: What forces black to play 41... Ng6?? after Kxf5? Fritz suggests the following line: 41. Kxf5 Ba6 42. Ra1 Bc4 43. Nxh7 Rb1 44. Nf6 Rxh1 45. Rxh1 46. Qb3 with little advantage for white.
Feb-11-06  Rastus: I thought that 41. Rxh7 was winning with a forced mate but, as usual, I hallucinated an incorrect continuation. So I consulted Chess Tiger and discovered that ... 44. a1Q saves black, as discussed. So, even if I had found Smyslov's variation (fat chance!) I still would have been wrong?
Feb-11-06  euripides: Another try is 42...Kf8 43 Qh6+ Ke8 44 Ng8+ !? when 44..Rxg8 45 Qd6+ Ke8 46 Qxb8+ Ke7 47 Qxg8 Qxc3 48 Qg1 may be good and 44 ...Kd7 45 Qd6+ mates, but 44...Ke8 seems difficult to crack e.g. 45 Qc6+ Kf8.
Feb-11-06  Eatman: Have to admit I saw Rxh7 quickly but thought that black was escaping with Kf8 instead of Nxg5. Turns out I was right, but I certainly didn't see a1Q later on.
Feb-11-06  Scarecrow: Well, I for one thought it was 41. Nxh7 Nxh7 42. Rxh7+ Kxh7 (just supposed that Black would take everything) 43. Qh2+ Kg8 44. Rh1 and now 44. - Kf8 is mate in five, so Black has to play 44. - Qc1+ 45. Rxc1 (Rb1 46. Rh1 Rxh1 47. Qxh1 )

(43. - Kg6?? 44. Qh6#, 43. - Kg7 44. Qh6+ Kg8 45. Rh1 and now only 45. - Qc1+ 46. Rxc1 saves Black from mate)

Unfortunately, only after a few million nodes even Sigma Chess Lite gives 41. - Ne6+ better for Black.

Feb-11-06  monad: What a mess!

My eye fell on <41.Kxf5> first thing, which <sort of trickles along after 41...Qb3.>

For a change I seem to have picked a better one than Mr. Smyslov. But win after such a blunder from Black can't have given him satisfaction,

Why did Black blunder AFTER the time limit had been reached? What was the haste for playing 44...Qxc3?

Feb-11-06  erimiro1: <patzer2>You were right, by pointing out 44- a1=Q! to be the saving move for black. I haven't tested today's puzzle, including your 41.K:f5, because I knew it (and its defects). 41.K:f5 was not tried by Kasparov, and as far as I know, by no one else. Kasparov's solution for today's puzzle is: 41.Qh2! and now if 41.-Q:c3?? 42.Qh6+ Kh8 43.Q:h7+ with mate; After 41. Ne6+ comes 42.K:f5 (there it is, your move!) Kf8 (the only move) 43.Q:h7 Q:c3 44.Q:f7+!! K:f7 45.g6+ Kf8 46.Rh8+ Ke7 47.Rh7+ Kf8 48.Rf7# If: 43.-Ng7+ 44.Q:g7+!! K:g7 45.Rh7+ Kf8 46.e6 Rb7 47.e7+ K:e7 48.Re1+ Kf8 49.Rh8+ Kg7 50.R:d8 Bd3+ 51.Kg4 with mate. Best for black is: 41.-Ng6+. The analysis here continues to move 56, and again, white wins.
Feb-11-06  Fan of Leko: <erimiro1> Qh2 was the move I finally chose, so I guess I solved it, and better than Smyslov! I didn't analyse (quite) as far as Garry, but on the main line our thougths were much the same.
Feb-11-06  EmperorAtahualpa: I only saw the first few moves, the rest was quite beyond my reach! Nice puzzle.
Feb-11-06  dakgootje: got the first moves, but missed blacks Nxg5
Feb-11-06  Jacobb: I am once again reminded why these guys are masters and i am not. tough puzzle:(
Feb-11-06  Kelvieto: My first Saturday puzzle:D
Feb-11-06  EmperorAtahualpa: Welcome to this site, <Jacobb>. I like your bio. :)
Feb-11-06  patzer2: <sagahelten: patzer2: What forces black to play 41... Ng6?? after 41. Kxf5!?> The short answer is nothing forces Black to play 41...Ng6?? after 41. Kxf5!? I was simply responding to <Obit>'s post, indicating that 41. Kxf5!? Ng6?? 42. Rxh7+ Kf8 43. e6! was <promising for white>. It's not only "promising," it's a forced win (albeit due to the weak reply 41...Ng6?? as you correctly point out).

Like you, I also looked at the possibility <41. Kxf5!? Ba6 42. Ra1> with Fritz 8, and found, as you indicated, it yields a small but clear advantage for White. I'm not claiming 41. Kxf5!? is a forced win, since the position is very complicated. However, with White having the initiative, 41. Kxf5!? appears to be a good practical winning try.

P.S.: I ran the position after 41. Kxf5!? to 15 depth & 994665kn on Fritz 8 on my 2.0 GHZ AMD processor with the following results: Smyslov Vassily (RUS) - J Rubinetti

click for larger view

Analysis by Fritz 8:

1. ± (0.72): 42...Qb3 43.Rxa2 Qc4 44.Kg4 Rb3 45.Rc1 Ne6 46.Nh5+ Kf8 47.Ba5 Bc8 48.Nf4

2. ± (0.78): 42...Bc4 43.Kg4 Qb3 44.Rad1 Qb1 45.Rxb1 axb1Q 46.Rxb1 Rxb1

3. ± (0.81): 42...Rb3 43.Rhc1 Ng6 44.Kg4 Qb4 45.Kg3 Bc4 46.Kh2 Qb5 47.Rxa2 Rb8 48.Rca1 Nh4

4. ± (0.87): 42...Bc8+ 43.Kf4 Rb3 44.Rhc1 Qb4 45.Kg3 Bf5 46.Kf2 Qb7 47.Rxa2 Ra8 48.Rca1 Qc6

Feb-11-06  patzer2: <sagahelten> One small correction. The above Fritz 8 analysis is after 41. Kxf5!? Ba6 42. Ra1 .
Feb-11-06  patzer2: <erimiro1> Thanks for the reply and the clarification. I was surprised to find Kasparov claimed a win for 41. Qh2! since my initial analysis with Fritz 8 indicated Black could force a draw by perpetual after 41...Ng6+. However, if Gary Kasparov and friends have analyzed it 56 moves deep for a win, I'll accpet it as true for now and clarify for myself later with Fritz 8 and Gary's book series (My Great Predecessors).
Feb-11-06  patzer2: P.S. <> Don't suppose you'd like to let <Crafty> take a crack at 41. Qh2! and post its analysis would you?
Feb-11-06  franksp: One objective of 41 Rxh7+ was to prevent the Knight from checking. For a simpler example of this theme, there was a game Bondarevsky-Ufimtsev 1936 first-category tournament. Ufimtsev is 2 pawns up, winning and blunders allowing Bondarevsky to sacrifice his Bishop diverting the Knight so it cannot check. Bondarevsky then marches his King up and Ufimtsev cannot escape mate.

Unfortunately the game is not in this collection. Anyone have the full score of that game?

Premium Chessgames Member
  al wazir: I'm getting a late start on this one, and I see there's a lot of prior art to catch up on.

<patzer2>: A while back you wrote <After the game continuation Black can hold with the defensive combination 44...a1Q!! Play could continue 44...a1Q!! 45. Rxa1 (not 45. Bxa1?? Qh3+) 45...Qxc3 46. Nh7+ Ke8 47. Nf6+ Kf8 48. Nh7+ = with a draw by perpetual.>

Question 1: After 45. Bxa1, 45...Qh3 is not check. What did you mean?

Question 2: Assuming you meant 45...Qh3, what if white plays 46. Rg1, threatening Qg7+? If 46...Qh2+, then 47. Rg3 Qf2+ 48. Rf3 Qh2+ 49. Kxf5. Black has run out of useful checks and his ♔ is still in serious trouble.

Feb-11-06  patzer2: <al wazir> I meant 44...a1Q!!45 Bxa1 Qh3=. After 45...Qh3 46. Rg1 Qh2+ 47. Rg3 Qd2+ 48. Re3 Rb3, White (to avoid losing) has to take a draw by perpetual with 49. Nh7+ Ke8 50. Nf6+ Kf8 51. Nh7+ Ke8 etc.
Feb-11-06  iamverywellatchess: Erudite playing here by the players!

A better puzzele is 33...? Black to play!

Feb-11-06  Fezzik: When I first saw this position, I never dreamt of 45.e6! I thought at the time that Smyslov had simply played a better move than 41.Qh2. It certainly seemed less messy until I found Smyslov's notes showing that Black probably draws after 42....Kf8. I haven't read Kasparov's notes yet, but I wouldn't want to play into the mess that Black stirs up after 41.Qh2.

Computers make such positions seem so easy, don't they?

Great position from a classic game!

Feb-11-06  kevin86: This is another of those games where it seems that NEITHER player could save the game.
Premium Chessgames Member
  Richard Taylor: I thought the solution was 41 Qh2 I looked at every move and missed Ng6! (forgtit was check - strange - my excuse? - I was tired....) Earlier I was looking at 41. Rxh7+

I looked at both Ne6 and Ng6 but didn't notice it was check - I thought it was a bit easy for a - what is it in the US etc - Saturday? Sunday here... hnmmm talk about Chess blindness! lol -

But earlier
I was looking first at 41. Rxh7+
if Nxh7 42. Qh2 threatening mate shortly so I thought Black had to play 42. ... Kf8 so then maybe 43. Qh6+ Ke7 when I was analysing 44. Ng8+ (and less enthusiastically) 44. Nd5+ when I thought that 41.Qh2 was a forced win...laugh!!!

Sep-02-17  andrea volponi: 41Qh2(! kasparov) Ng6+-Kxf5 Kf8 -Nxh7+ Ke8 -e6 Qxc3 -Nf6+ draw
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