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Robert James Fischer vs Rodolfo Tan Cardoso
Fischer - Cardoso (1957), New York, NY USA, rd 4, Sep-??
Sicilian Defense: Najdorf Variation (B90)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Mar-09-10  MiCrooks: You should not play g8 Q+ at all as several other pointed out. The threat of getting two Queens keeps Black from being able to Q at e1 in time.

Most of the focus has been on how crushed Black is, but he is short just one tempo from being able to complicate things greatly! So if you blindly went in for any of these combinations without counting out moves (or noticing at all) that Black Queens as well after fxe4 etc. then no points to you!

Mar-09-10  OBIT: This has nothing to do with today's puzzle, but I think you guys will get a kick out of it. In the "Chess Life" for this month (March 2010), Problem I in Bruce Pandolfini's article is the following position, with Black to play:


click for larger view

Pandolfini's solution is "The advance 1...b5 wins the White bishop". Umm, instead of "winning" the bishop, why not just "take" the bishop? Furthermore, after 1...b5?? 2. Kc3! bxa4 3. Kxc4 White draws by running his king to a1, as Black has the wrong bishop for this rook pawn.

Mar-09-10  Patriot: <<MiCrooks>: You should not play g8 Q+ at all as several other pointed out. The threat of getting two Queens keeps Black from being able to Q at e1 in time.>

Both methods win. Fritz or Rybka may say you chose the best way, I don't know. In terms of calculation/pattern recognition, the idea of g8/Q+ first to lure the king to the back rank which allows white to queen with check seems the most standard way to calculate this as this idea comes up quite often and is most forcing.

I agree with your second point that it's necessary to count out moves to make sure it works.

Mar-09-10  vanytchouck: easier than the monday puzzle:
It took me around 10-15 seconds.

As usual, i'm looking for sexy sacrifices. So i can't help thinking about 46. Bxd6 +.

What for?

As i was focused on the queen side, i was annoyed by the fact that the Bd6 (after 46.Bxd6 + Bxd6) was still guarding the b8 square.

Fortunately it takes few seconds to notice the g6 pawn ...

46. Bxd6 + Bxd6
47. g7 Rf7
48. Kxd6 (or g8 = Q to allow 8=Q +)
49. b6 f3
50. b7 f2
51. b8=Q (or 51. g8 = Q+ Kxg8 52. b8 = Q + and Qb1)
51...f1=Q
52. g8 = Q+ kf6
53. Qbf8#

Mar-09-10
Premium Chessgames Member
  patzer2: <OBIT> So did Pandolfini ever find Bobby Fischer? Looks like he could have used him on the amusing puzzle you shared with us here --or maybe a better Chess Life editor.
Mar-09-10  njchess: Nice game from Bobby. It isn't until you play the game through that you realize that Fischer never gives Cardoso a whiff of counterplay. In part this is due to Cardoso's choice of strategy, but it is mainly due to Fischer's solid play.

Cardoso plays the opening somewhat timidly. Practice has shown that Black cannot afford to let White mass his attack with impunity as Bobby does here. In more modern games, Black often pressures White early on via b5 and b4.

Cardoso prefers to play 7. Bd7 and 8. Nc6 rather than the more active b5, Bb7 and Nd7 setup. As a result, he doesn't waste a tempo castling since the ensuing activity will take place in the middle of the board anyway. Objectively, I prefer casting even with my opponents bishop on the a2-g8 diagonal. Here, Cardoso takes the road less traveled.

10. ... Qc7 is a slight slip in which Black commits his queen prematurely and all but ensures that he will have to play e5 in response to the looming f5. Since f5 and Black's response of e5 and b5 are waiting in the wings, Black's queen rook will have to move off the exposed diagonal anyway. Given Black's decision to settle matters in the middle first, Rc8 is more in keeping with his strategy.

After Black's 13. ... e5, he is left with a "hole" on d5 and a backward pawn that hems in his bishop. While these elements are a problem, they are generally not considered fatal provided Black can exchange such that White leaves a pawn on d5 which, in effect, plugs the hole. Cardoso does his level best but Fischer doesn't bite. One of the subtleties of Fischer's play is the way he creates space for his pieces to move. He often sacrificed material for greater mobility, though not in this game.

21. a4 is a brutal, though obvious move that effectively ends the game. At this point, all Cardos can do is hope for a draw, or a blunder on Fischer's part since Black is already running out of useful moves.

The resulting endgame is a study in piece mobility. Although material is equal, White's greater piece mobility prevents Black from mounting any counterplay. After the rooks are exchanged, its just a matter of time before Black finds himself in a zugzwang. This actually occurs on move 43 when Cardoso played Ke7. After 44. Kc6, White has a number of ways to win, though 46. Bxd6+ is the most forcing and efficient.

Probably the only reason Cardoso did not resign sooner was that he was hoping the young Fischer would blunder the game away. Besides, I doubt he enjoyed being crushed by a 13 or 14 year old.

As for the puzzle, well, I already knew the answer.

Mar-09-10
Premium Chessgames Member
  kevin86: There is a little trick down the road to win it that involves THREE promotions.

46...♗xd6 47 g7 ♔f7 48 ♔xd6 fxe4 49 b6 e3 50 b7 e2 51 b8=♕ e1=♕ 52 g8=♕#

Mar-09-10  YouRang: Today I decided that I wouldn't do my usual thing, which is to jump at the first decent-looking move I found.

Consequently, I ended up jumping at a bunch of moves that all look winning. First I looked at 46.g7 which looks winning, then I saw 46.b6 which looks winning, and even 46.Bxd6+ looks winning.

In fact, a more challenging puzzle would be to find a move for white that isn't winning.

Mar-09-10  YouRang: <In fact, a more challenging puzzle would be to find a move for white that isn't winning.>

So far, I think the solution is unique! :-)

Mar-09-10  desiobu: <OBIT> that's pretty funny.
Mar-09-10  YouRang: <So far, I think the solution is unique! :-) > Nah, there are at least two moves that *don't* leave white with a winning position...
Mar-09-10
Premium Chessgames Member
  Once: <YouRang> They say that the first sign of madness is talking to yourself, and the second sign is when you answer back...

Fritzie reckons that of white's 12 legal moves, only one loses (46. Ba7), one draws (46. Kc7), 46. Kb7 gives white a small advantage (0.35, as good as level) and all the rest lead to a white advantage of +1.22 or greater.

Mar-09-10
Premium Chessgames Member
  Annie K.: <Once: <<YouRang> They say that the first sign of madness is talking to yourself, and the second sign is when you answer back...>>

The way I heard it, you needn't be very concerned as long as you're only talking to yourself - it's when you start answering yourself too, that you may start worrying.

But I don't get that - isn't it rude, not to answer when somebody is talking to you? :s

Mar-09-10
Premium Chessgames Member
  Once: <Annie K.> Perhaps it's perfectly okay to have a conversation with yourself, as long as it's not an argument?
Mar-09-10
Premium Chessgames Member
  Sargon: <A Karpov Fan: i got g7, still winning lucky for me :-)> Yes but if you say g7 surely you planned on following it up with Bxd6, right? There may be 5 moves that win but all of them contain the core idea of Bxd6. So I don't really think this is a puzzle with multiple solutions--there are multiple variations that win but they all contain the same idea.
Mar-09-10  A Karpov Fan: 46.Bxd6+ is the strongest move and wins in the cleanest way.

I didn't get it.

To me a puzzle is about finding the strongest move or idea in the position.

It doesn't matter if other moves also win, the puzzle is finding the strongest move imo.

Mar-09-10  YouRang: <YouRang> <Once> <Annie K.> Interesting.

Is it madness to talk to yourself?
No.

Is it madness if you answer yourself?
Maybe.

Is it madness to be insulted by your answer?
Hey, what is this? The Spanish Inquisition?! >:-(

Mar-09-10  pulsar: <YouRang,
Once, Annie K.>
Thanks for the laughter, LOL!
Mar-09-10  dufferps: Pretty amazing. Cardoso resigns, but playing it out, I find that he loses by only a single tempo. (One square closer and he could have queened first at e1.) When you are that good and your opponent is also, I guess you have them counted way early.
Mar-09-10
Premium Chessgames Member
  Annie K.: <Once: <<Annie K.> Perhaps it's perfectly okay to have a conversation with yourself, as long as it's not an argument?>>

Um, I may have a little problem then... :s

<YouRang: <<YouRang> <Once> <Annie K.> Interesting.

Is it madness to talk to yourself?
No.

Is it madness if you answer yourself?
Maybe.

Is it madness to be insulted by your answer?
Hey, what is this? The Spanish Inquisition?! >
:-( >
>

Good stuff!!! :D

<pulsar> thanks for the appreciativeness. ;)

OK, actually, I also heard a version that claimed you're only in real trouble when you start answering yourself <in different voices>. Whew! ;p

Mar-09-10  dufferps: I take it back - I think I wasted a move for white that time. I tried again, letting black simply take my advanced king-side pawns, and got my Queen at b8 while black's pawn was still TWO squares away. In either case, black's situation is helpless, and Cardoso recognized it. (I had to try playing it out several ways to be convinced.)
Mar-09-10  TheBish: Fischer vs R T Cardoso, 1957

White to play (46.?) "Easy"

Running out of time, so I'll just say the solution begins with 46. Bxd6+! Bxd6 47. g7.

Mar-10-10
Premium Chessgames Member
  patzer2: Perhaps Black can hold after 21...b4, when play might continue 22. cxb4 Rxb4 23. b5 Rxe4 24. Kf2 Rb4 25. bxa6 Kd7 26. Rab1 d5 27. b3 Ra8 28. a7 Kc6 29. Rfc1+ Kb7 .
Nov-21-15  bobbyperez: 46.Bxd6+!! is the last move of this game____________________________________________- ________________________________________________-
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r example,black continues to play by playing 46...Bxd6 and white answers it with 47.g7! Kf7 48.g8Q+! Kxg8 49.Kxd6 fxe4 50.b6 e3 51.b7 e2 52.b8Q+ Kg7 53.Qb1 and white wins. Good game for Fischer! Woo-hoo!
Good endgame!Woo-hoo!________________________________- ________________________________________________-
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Sep-24-17
Premium Chessgames Member
  Stonehenge: Photo after 23...Rc7:

http://www.echecs-photos.be/BobbyFi...

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