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Lajos Portisch vs Robert James Fischer
Sousse Interzonal (1967), Sousse TUN, rd 2, Oct-17
King's Indian Defense: Fianchetto Variation. Classical Main Line (E69)  ·  1/2-1/2

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
May-09-07  Chessmensch: This game is analyzed by Watson in his book, Mastering the Chess Openings, Vol. I, page 57.
Jun-28-08  apexin: intersting game! i i like fischer's handling of blacks position. 23...gxh5! is an interesting move. similar theme can be found in the famous Spassky vs Fischer, 1972 black accepts two sets of doubled pawns in order to use the open g-file. on 40...Rxd1 41Qxe5 Kg8?
Watson gives a following comment:
Perhaps Fischer was trying to win, but this gives White a real attack. Black had a draw by 41...Kg6 42.Qf5+ Kg7 43.Qe5+ with perpetual check. on 43.Rg6? - An error in turn. Good winning chances were to be had by 43.Qxc5, or by 43.Qb8+ Ne8 44.Rg6+ and Rxg5 with a third pawn and play against blacks exposed king.
Jun-28-08  RookFile: A key moment of this game was when Portisch wisely got rid of his bad bishop with h4 and Bh3.
Jul-22-08  notyetagm: <Chessmensch: This game is analyzed by Watson in his book, Mastering the Chess Openings, Vol. I, page 57.>

How much detail?

Thanks

Sep-12-09  mhelshou: Yes. Spectacular game. I came accross it in Watson's book, it's analyzed in quite good detail. I find the move 23. ... gxh5 spectacular. Changes everything you know about weaknesses and king safety.
Feb-27-12  AlphaMale: <Perhaps Fischer was trying to win, but this gives White a real attack. Black had a draw by 41...Kg6 42.Qf5+ Kg7 43.Qe5+ with perpetual check. on 43.Rg6? - An error in turn. Good winning chances were to be had by 43.Qxc5, or by 43.Qb8+ Ne8 44.Rg6+ and Rxg5 with a third pawn and play against blacks exposed king.>

Well, Qxc5 seems like a draw but 43.Qb8+ leaving White 3 pawns versus a Knight could indeed have been a very interesting contest. Does anyone know if this game was adjourned at move 40?

Feb-27-12
Premium Chessgames Member
  diceman: According to Karsten Muller, 29...Bg5 would have kept blacks initiative.
Feb-27-12  haydn20: After 43. Qb8+, 43...Qe8? 44. Qxe8+ Nxe8 45. Rxc6 Rd2 46. Rxc5 White ends up with four passers for the N & wins. If 43...Ne8 44. Rxg6+ Kf7 45. Rxg5 White has three connected passers and an attack for the N, so maybe 43...Kf7 44. e5! Qd8 45. Qb7+ Kg8 46. Qxc6 is best tho' Black still has problems.
Feb-27-12  haydn20: <diceman> after 29...Bg5 I have 30. Rh2 Kg7 31. Re1 Rd6 32. Nh4 Bxh4 33. Rxh4 Red8 and Black has play along the d-file and maybe the K-side, but White has those c-Pawns to chew on. What does Muller say?
Feb-28-12
Premium Chessgames Member
  Penguincw: Fischer placed the rook too far to block any checks.
Feb-28-12
Premium Chessgames Member
  diceman: <haydn20: <diceman> after 29...Bg5 I have 30. Rh2 Kg7 31. Re1 Rd6 32. Nh4 Bxh4 33. Rxh4 Red8 and Black has play along the d-file and maybe the K-side, but White has those c-Pawns to chew on. What does Muller say?>

After 29...Rd7?!

“An inaccuracy which gives Black’s advantage away.
29...Bg5 first holds the initiative firmly in hand”
(no analysis)

Also liked 41...Kg6 better: (instead of Kg8)

“After 41...Kg6 White has no choice and must take the draw by perpetual check”

Feb-29-12  bwarnock: <<AlphaMale>Well, Qxc5 seems like a draw but 43.Qb8+ leaving White 3 pawns versus a Knight could indeed have been a very interesting contest. Does anyone know if this game was adjourned at move 40?>

That's a good question about whether it was an adjournment....

After 43. ♕xc5 it looks to me like Black can force a draw pretty easily with 43... ♕d3(!) when 44. ♕xc6 (can't allow 44 ♕xe4+) ♕f1+ 45. ♔f3 ♖d3+ 46. ♔g4 ♕xf2 47. ♕c8+ ♔f7 48. ♕c7+ ♔g8 leads to this position:


click for larger view

Here White has nothing better than to perpetual check with the Queen (i.e. ♕c8+ / ♕c7+ etc.) (any move of the Rook off the h-file will most likely lose to 49... Qf3+ and 50... Qh5+)

Feb-29-12  haydn20: I had a math prof who used to say something like "Here, obviously A = B + C." I'd take my notes home to study and sure enough, four hrs later, I'd see it was true. I hate it when a GM says a move is obvious without any follow-up: 29...Bg5 "holds the initiative." Bah!
Feb-29-12  bwarnock: Very cool variation results from the following:
After 43.♕xc5 ♕d3 44.♕xc6 ♕f1+ 45.♔f3 ♖d3+ 46. ♔g4 ♕xf2 47. ♖h3 (instead of 47.♕c8+):


click for larger view

Black plays: 47...♕f3+ 48.♔xg5 ♕e3+ 49. ♔g6 (if 49. ♔f6?! (might still draw) 49...♖d6+ and 50...♘e8+, not, however, 49.♔g4 ♕f3+ 50. ♔h4?? ♕h5 mate)


click for larger view

and although this looks dangerous for Black he can draw easily with 49...♖d6+ (!!) 50. ♕xd6 ♕xe4+ when 51.♔f6? ♘e8+ wins the queen and 51.♔g5 ♕f5+ 52.♔h6 ♕h7+ 53. ♔g5 ♕f5+ etc. is a draw.

(Unfortunately from this position there's a 4th possibility: 49.♔h4(!) (rather than 49. ♔g6) which gives White chances. - for instance 49.♔h4(!) ♖d4 50. g4 ♕xe4 51. ♕xe4 ♖xe4 52. ♖c3 )


click for larger view

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