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Robert James Fischer vs Boris Spassky
Fischer - Spassky (1992), Sveti Stefan & Belgrade YUG, rd 7, Sep-12
Spanish Game: Closed. Pilnik Variation (C90)  ·  1-0

ANALYSIS [x]

FEN COPIED

Annotations by Stockfish (Computer).      [20903 more games annotated by Stockfish]

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sac: 26.Nf4 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 5 OF 5 ·  Later Kibitzing>
Mar-09-17  clement41: After 43...Bxg7 44 Nxg7+ Kxd6 45 Kd4, black will go ...b4 then ...a4 (if ...a4 first, then a3 fixing the Q-side, although the pawn sac ...b4 ab a3 always must be monitored). The moment black plays ...b4, white must reply a4 if he wants to play for the win obviously. The knight must come back into play, capturing black's pawns and shepherding white's pawn.

However in the game, it is not immediately obvious how white will improve, against the Black setup Kg8/Bd8

Mar-09-17  eaglewing: Now, if 40. d6 is a winning move, is 39. ... Kf6 really a losing move? Instead of Kf6 which move could draw? I suspect 39. ... Bf6 could be better, taking control of g5 and d8, the squares which both passed pawns still have to take, but is it enough?
Mar-09-17  Carlos0012358: Too famous a game. Not good for a puzzle.
Mar-09-17
Premium Chessgames Member
  morfishine: Friday usually gives me alot of trouble but this one was easy, Wednesday-ish

*****

Mar-09-17  saturn2: I did not get it but I understand now it is about limited possibilities of the bishop to control the square d8.

Since white is a pawn up there should be other winning moves like Ke4 or Nd4.

Mar-09-17  clement41: The pos after 26 Nf4 exd2? makes for a good enough calc. training. There are the lines starting 27 Rxe8+ Rxe8 28 Nxd5 Re1+ that should yield (note the nice Kh2! move allowing the zwichenchach Nxf6+). And the lines starting 27 Nxd5? with sublines 27...de=Q+ and 27...Rxe1+?(which should yield respectively and )
Mar-09-17  wtpy: Morfishine, How do you usually do on Thursday?
Mar-09-17  Skewbrow: Today Java has stopped working for me. Here as well as some other sites. So the only viewer that works now is pgn4web. Has anybody else had similar problems?

My system: Windows 7, Firefox 52

Mar-09-17  YouRang: <morfishine: Friday usually gives me alot of trouble but this one was easy, Wednesday-ish>

Let's compromise and call it a Thursday! ;-)

Mar-09-17
Premium Chessgames Member
  kevin86: 1992 match! Fisch wins again!
Mar-09-17  awfulhangover: I went for 40. Ke4 and it seems to be correct too. My Komodo agrees.
Mar-09-17  Cheapo by the Dozen: Easiest Thursday in a long time, because there are so few continuations to try. Push pawns. Check that the knight is poisoned. Discover the convenient facts that ... Bf6 is both essential and prevented by a g5 pawn. Done.
Mar-09-17  stst: Again At a glance, the d pawn has to guard Black K's movement, and the g pawn has to drive or distract Black K, so the only most reasonable move is Ke4. Black B on dark sq. cannot do anything but go Be5, then the g pawn advances, Black K has to take it, or move away from d pawn, hence allowing chances for it to advance, and later promote.
Mar-09-17  BOSTER: How to play after 40.d6 Ba3?
Mar-09-17  stst: Have to correct myself, "only" should read "one." The mind speaks of 40.d6, the pen works on 40.Ke4. For Fish, the simpler is preferred, for sure.
Mar-09-17  Marmot PFL: 40 Ke4 followed by Nd4 and d6 also looks very good.
Mar-09-17  YouRang: <BOSTER: How to play after 40.d6 Ba3?>


click for larger view

41.d7 Be7 42.Nd4!


click for larger view

The N nicely blocks the K from e6, while threatening 43.Nc6 to support the promotion square.

One way it might go is:

42...Kg5 43.d8Q! Bxd8 44.Ne6+ Kxg4 45.Nxd8


click for larger view

White has no problem picking off the black pawns and promoting the a-pawn.

Mar-09-17  BOSTER: < YouRang >. Thanks.
Mar-09-17  YouRang: <BOSTER> Checking with the computer, I see that 40.d6 Ba3 41.d7 Be7 can also be answered simply by 42.Nxe7! Kxd7


click for larger view

The d7 pawn is a goner, but white still wins by going after the queenside pawns while black must be concerned about Pg4.

Mar-09-17  pmukerji: Unfortunately I'm not seeing this. Here's what I see: with the final position on the board and black to move as black i would play 44. Kg8 and block the g pawn from queening. Thought here is that as soon as white moves the knight, the king takes the pawn on g7. Now as regards the d pawn, black can play Bd8 and protect the black a pawn and cover the d8 square at the same time and the a pawn can protect the b pawn too. If white starts to move it's king to help queen the d pawn, black can gang up on White's a pawn with its connected a-b pawns to queen. What am I missing?...I'm clearly missing something important.
Mar-09-17  pmukerji: Looks like clement41 had the same question...the game as is played looks like a draw to me...thoughts anyone?
Mar-09-17
Premium Chessgames Member
  michael104: After 44...Kg8, how about 45.Nd4 Kxg7 46.Ne6+ Kf7 47.d8Q Bxd8 48.Nxd8+. This should be a straightforward win for white.
Mar-09-17  pmukerji: Wow...that's so cool...thx Michael.
Mar-10-17  wtpy: After 40 ..Ba3 41 g5 looks like it wins ad well. 41..Ke6 or Kf7 42 g6 and curtains.
Mar-12-17
Premium Chessgames Member
  diceman: In poker terminology:

“One Fischer beats a pair of bishops.”

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