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Robert James Fischer vs Efim Geller
"Under the Microscope of Analysis" (game of the day Feb-18-2016)
Skopje (1967), Skopje YUG, rd 2, Aug-08
Sicilian Defense: Fischer-Sozin Attack. Main Line (B89)  ·  0-1



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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 22 ·  Later Kibitzing>
Aug-15-03  Sylvester: We need crafty to figure out this game.
Premium Chessgames Member What do you want crafty to analyze? The final position?
Aug-15-03  Sylvester:, no no no! There is a famous debate on whether Fischer would have won if he had played 20. Qf4.
Aug-15-03  tud: Yes he would. 20Qf4!! a patient killer move. Fisher has published the analysis and the soviet magazine 64 investigated. Geller even acknowledged the loss but he mentioned it was impossible to find that move during the game. I think the rest is pretty much forced if you see the idea of 21Rh5! and 22Bg7. It's impossible to stop white's attack and the whole variant was put on hold for black.
Aug-15-03  PVS: The Soviets were rarely gracious when it came to Fischer. I think if he had seen 20. Qf4 he would have seen the rest, but the fact is that he missed it over the board.
Aug-15-03  Sylvester:, can crafty figure out what would have happened if Fischer had played 20. Qf4?
Aug-16-03  crafty: 20. ♕f4 cxb2 21. ♖h5 ♘f6 22. ♖xh7+ ♔xh7 23. ♕h4+ ♔g6 =   (eval 0.00; depth 12 ply; 2000M nodes)
Aug-16-03  Sylvester: Wow! Thanks Chessgames. No wonder they have been arguing about it for over thirty years.
Premium Chessgames Member Don't consider that the final word; crafty saw Rh5!! but can't find any more than a perpetual. But that was "only" 2 billion nodes; maybe one night when the server is quiet we'll do a 10 billion node scan.
Aug-16-03  Sylvester:    It looks like crafty improved on Geller's answer to 21. Rh5. In the analysis Kulla Tierchen gave: 21. Rh5 Bf6 22. Qf5 h6 23. Rxh6+ and it is over. That 23. Rxh6 must be one of the moves the Soviets thought Fischer might not find.
Aug-16-03  tud: How about 22 Rh6 in Crafy's analysis ?
Premium Chessgames Member
  Calli: I'm with <TUD> on this one. Start the analysis after 20.Qf4 cxb2 21.Rh5 Nf6 22.Rh6! Undoubtedly, Fischer would choose this move over the Rxh7 draw.

Fritz continues with 22.Rh6 Ne4 23.Qf5 Ng5 24.Qg4 Be4 25.h4 and white is winning.

Feb-18-04  Whitehat1963: Fischer's quickest loss in his pet line, the Fischer-Sozin Attack.
Jun-14-04  Shadout Mapes: The Fischer-Sozin Attack has white castling kingside, in this he's castling queenside signifying a Velemirovic Attack.
Jul-10-04  Dick Brain: Sorry but 20. Qf4 cxb3 21. Rh5 Nf6 22. Rh6 was not originally discovered by Crafty or any other computer program. Fischer does not mention 21...Nf6, but this was published long ago. I know this because my copy of 60 Memorable Games has that variation marked in ancient pencil on page 365 and I seriously doubt that I found the line myself ;) Perhaps it was discussed in "Evans on Chess" back in the 70s. My old copy of Basic Chess Endings has numerous similar markings. Also in this game, 21. Rh5! has been suggested by E. Mednis as being a promising try. This also is not mentioned by Fischer.
Premium Chessgames Member
  Benzol: <Dick Brain> I haven't got my copy of MSMG readily available. Does Fischer comment on the line 20.♕f4 ♘d2+ 21.♖xd2 cxd2 22.c3 d1=♕+ 23.♗xd1 ♖b8?
Premium Chessgames Member
  Benzol: I'm an idiot. I just realised the Black Queen is en prise. Well what about 22...♕xb3?
Jul-10-04  WMD: Fischer gives 22...Qxb3 23.Bxg7+ Kxg7 24.Qg4+ Kh8 25.Qd4+ and mates.
Premium Chessgames Member
  Benzol: <WMD> Thanks. Well so much for my theory. While I'm recovering from being blown into the weeds has anyone else got any better ideas?
Jul-11-04  Dick Brain: <Benzol> do you mean better ideas for playing the Black pieces? I sure do. I was prepared to play the Velimerovic for several years with either the White or Black pieces. However, in all that time only one person ever played the classical sicilian against me as Black (I won in 20 moves) and nobody ever played the white pieces of the Velimerovic against me. A lot of study for only one point.

But basically, Black should develop with a6, Qc7, Be7, 0-0 and then exchange knights. Then he can redeploy his N on f6 via d7 to c5 and then advance his queenside pawns in a very strong attack against the White king. Fischer's safe-looking Kb1 would look very questionable to players of the Velimerovic in the days when I played it since there is no time whatever in a correctly-played Velimerovic Sozin for either side to make a quiet move.

Jul-11-04  Everett: So is there a verdict? What happens after 20.Qf4? Does white definately win or does black hold? I can't figure it out, and many of you don't think Crafty has the whole thing either....
Jul-11-04  WMD: According to the comps, White is winning in Calli's line 20.Qf4 cxb2 21.Rh5 Nf6 22.Rh6 Ne4 23.Qf5 Ng5 24.Qg4 but 22...Rxf7 is a stiffer defence. Then the variation runs 23.Bxf7 Be4 24.Bb3 d5 25.Bxf6 gxf6 26.Rxf6 and White has a +1.1 advantage according to Fritz.
Aug-07-04  aw1988: Here, let me run Qf4 through on my Junior 8...
Aug-07-04  aw1988: OK! It took a while, but here it is:

(1.15) Depth: 21 3:04:58 653416kN (this by the way is off the charts... it's way more than the number indicated)

20...cxb2 21. Rh5 Nf6 22. Rh6 Rxf7 23. Bxf7 Be4 24. Bb3 d5 25. Bxf6 gxf6 26. Kxb2 a5 27. c3 Qd6 28. Qg4

Aug-27-04  Hanzo Steel: Looks like the verdict is 20. Qf4!! wins.
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