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| Nov-03-13 | | agb2002: The material is identical.
Black threatens 30... Qxf3.
There are a number of details to take into account:
1. The weak square f6.
2. The knight fork on f6.
3. The possibility of extracting the black king.
4. The alignment on the e-file of Black's heavy pieces after 30.Nf6 Kxf6 31.Be5+ Kxe5. 5. Black's bad placed bishops.
They suggests 30.Nf6 Kxf6 (30... Qxf3 31.Nxe8+ and 32.gxf3 + - [R]; 30... Qe7(6) 31.Nxe8+ Qxe8 32.Bb5 Bd7 33.Qd5 + - [R vs N]) 31.Be5+ Kxe5 (else 32.Qxe4) 32.Qxe4+ Kxe4 33.Re1+ Kf5 34.Rxe8 Be6 35.Rxf8 Bxa2 36.Bd3+ Ke5 (36... Kf4 37.Bxg6; 36... Kg5 37.g3 followed by f4, avoiding Ne5; 36... Ke6 37.f4) 37.g3 followed by f4 (37... g5 38.Rh8) with the idea of Bb5 or Be4 to further weaken Black's position. |
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| Nov-03-13 | | gofer: Nf6 seems a nice trick! White sacrifices N + B to lure
the black king out into the open. It looks very interesting! But does it work?
<30 Nf6! Kxf6>
<31 Be5++ Kxe5>
<32 Qxf7 ...>
Black cannot allow Qxe8+ winning back two pieces and and the
exchange.
<32 ... Re7>
<33 Qxf8 Bf5>
<34 g3! ...>
The threats of f4+ and Bg7 are difficult to combat!
~~~
Hmmm, okay, close but no banana! Anyone got any silicon that
can decypher whether any part of <32 Qxf7> holds water...? |
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| Nov-03-13 | | DWINS: <gofer>, Not only does 32.Qxf7 hold water, but Stockfish 4 rates it as being considerably stronger than Karpov's 32.Qxe4+ which yields an advantage of (2.68). After 32.Qxf7 Re7 33.f4+ Qxf4 34.Re1+ Qe4 35.Rxe4+ Kxe4 36.Qxf8 Be6 37.Qxh6 Ke5 38.Qxg6 Kd6 39.g4 Ne5 40.Qf6, Stockfish evaluates this position as (5.49). |
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| Nov-03-13 | | morfishine: I didn't see this combination instead focusing on (1) <30.Bxh6+> followed by 31.Qxf7 & (2) <30.Qg3> A fascinating discussion of tactics. Its safe to say any GM will be, at the least, very good at tactics. No doubt, some are better. For example, Petrosian, the "immovable object", was a great tactician; but he carries the label of being a great positional player. Or take Anand who admitted some years ago that tactics weren't his forte; yet look at what he did to Aronian earlier this year: Aronian vs Anand, 2013 Speaking of great positional players, one could easily conclude a great positional player (like a Petrosian) would hold the record for the longest streak of games without a loss. In fact, the great virtuoso of tactics, Tal, holds this record: 95 consecutive games Tal also holds the second longest streak at 86 games
Go figure
***** |
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| Nov-03-13 | | SpaceRunner: DWINS: <gofer>, Not only does 32.Qxf7 hold water, but Stockfish 4 rates it as being considerably stronger than Karpov's 32.Qxe4+ which yields an advantage of (2.68). In practical play you simplify to avoid the risk of errors!
There are also the time controls to consider. For Karpov it is an easy endgame... A win is aa win . |
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| Nov-03-13 | | paramount: Easy for Sunday standard.
Its probably for Friday or at least Saturday, but definitely not for Sunday. 30.Nf6 forking the queen and rook, the only response is 30...Kxf6 31.Be5+ (this is double check from queen and bishop, queen must move, 31...Ke6/Ke7/Kg5 resulting MATE in ONE) 31...Kxe5 (again, the only move).
32.Qxe4+ Kxe4 (again, the only move)
33.Re1+ Kf5/every king moves
34.Rxe8 (now forking black both bishops, and white winning the exchange) And i stopped the calculation there after seeing that is no threats in the white camp. See, this is the Friday thing... imo |
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| Nov-03-13 | | GrandMaesterPycelle: Yay, I got the Sunday puzzle in 2 seconds. Hardly surprising, since it's a famous game. No need to pretend I thought it all by myself. |
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Nov-03-13
 | | PawnSac: f6 is obviously weak, and I saw that Nf6 QxQ Nxe8+ doesn't work for black, and then after spending a minute or two looking for any other reasonable candidate move to exploit the weak f6, i realized the Re8 forks 2 bishops and wins the exchange. I could find nothing else of significance. But the continuation is fairly clear, and i certainly would not consider this "insane". I have seen many other positions far crazier than this one. |
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| Nov-03-13 | | Everett: <Kasparov had difficulty beating Petrosian until he decided to play like Petrosian. This was part of how he became such a great player in all aspects of chess.> Kasparov had to ask Spassky directly how to beat Petrosian. According to Garry, Spassky offered some slow genital-squeezing advice, along the lines of <do not hurry>. Regarding the game, I find Karpov's 32nd more instructive and beautiful than the "better" alternative. |
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Nov-03-13
 | | Penguincw: My first thought was trying 30.Bxh6+ Kxh6 31.Nf6 (forking the queen and rook) but it fails to 31...Qxf3 32.Qxf3 and the rook can move. Then I thought of 30.Nf6 (trying to set up a discovered check) and was right. :) |
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| Nov-03-13 | | Everett: <Nov-03-13 GrandMaesterPycelle: Yay, I got the Sunday puzzle in 2 seconds. Hardly surprising, since it's a famous game. No need to pretend I thought it all by myself.> Exactly. Some do insist on pretending.
Chessgames, for its part, may decide to not choose very famous games for Saturday and Sunday puzzles. |
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| Nov-03-13 | | peristilo: Karpov was a dangerous player cause his great tactical skills were disguised. They were like a secret weapon that he only used when the position called for them. This means that if Karpov sacs a piece against you, you can already resign. |
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| Nov-03-13 | | eyalbd: Chess is tactics!
All world champions were brilliant tacticians. Without this skill they would never be world champions. So, no surprise here to see a beautiful combination by Karpov This is just one example of many. See his 'Notable Games' |
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| Nov-03-13 | | eblunt: A lovely tactical combo |
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| Nov-03-13 | | James D Flynn: 30.Nf6 Kxf6(else Qxf3 31.Nxe8+ K moves32. gXf3 wins a R) 31.Be5+ Kxe5 32.Qxe4+ Kxe4 33.Re1+ K moves 34.Rxe8 wins a B and Whiite is up a R for a N in the endgame which is clearly hopeless for Black. |
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| Nov-03-13 | | Nicocobas: <anyone> Please explain the difference between "positional" and "tactical" play. |
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| Nov-03-13 | | James D Flynn: Everett : this may be a famous game but I had never seen it before, no pretense. |
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Nov-03-13
 | | perfidious: <Nicocbas>: Tartakower once expressed it thus: Tactics is knowing what to do when there is something to do; strategy is knowing what to do when there is nothing to do. |
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| Nov-03-13 | | patfoley: Kasparov would have played 32. Qf7 and Topolov would have resigned a move or two later. |
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| Nov-03-13 | | Patriot: 30.Nf6
30...Qxf3 31.Nxe8+ and 32.gxf3 
30...Kxf6 31.Be5++ Kxe5 32.Qxe4+ Kxe4 33.Re1+ followed by 34.Rxe8 winning the exchange because of the fork on both bishops. 30...Ke6/Ke7 31.Qf6#
Wow--nice problem! |
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Nov-03-13
 | | Richard Taylor: Yes even my steam driven Fritz prefers 23. Qxf7 but has anyone noticed that Karpov isn't a computer? |
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| Nov-03-13 | | M.Hassan: "Insane"
White to play 30.?
Equal in materials
I had seen this game before:
30.Nf6 Kxf6 (forced, if not Queen falls)
31.Be5++ Kxe5
32.Qxe4+ Kxe4
33.Re1+ Kf4
34.Rxe8 Be6
35.Rxf8 Bxa2
36.Rc8
White is better and can become even better having the Rook. |
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| Nov-03-13 | | Abdel Irada: If there was a decisive mistake in Black's defense, it may be 27. ...Kg7, which left the king on a most unfortunate square, as demonstrated by White's alert exploitation of the error. Had the king been on h8, for example, White's 30. Nf6! would have come without its terrors; it was only the threat of 31. Nxe8 <with check> that prevented the simple and natural 30. ...Qxf3. With the king on g7, of course, this zwischenzug forces the capture of the knight on f6, whence it can be enticed to e5 by means of double check. Once the king was lured to the fatal e-file, White had no trouble exploiting the other weakness in his opponent's position: the undefended bishops on their home squares c8 and f8. ∞ |
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Nov-03-13
 | | GoldenKnight: <JSYantiss: Still trying to figure out why Topalov resigned.> Here is some factors I eyeballed as I don't have time to fire up an engine. Karpov's last move seems innocuous enough, but is absolutely devastating. The black N is pinned and any attempt to move it will lose the c-pawn. Of course he cannot play b6. In addition white is threatening Rc7 and there are too many pawns for the Black N to defend (especially with the pin). No matter what black does his position will be laid to waste. These are some particulars, but remember they both have light bishops and the R in an endgame has so much more range than a N. That alone without any analysis would almost automatically make black's position resignable (unless black had a very special position that would make his game tenable -- which in this case he does not). |
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| Nov-04-13 | | Everett: < patfoley: Kasparov would have played 32. Qf7 and Topolov would have resigned a move or two later.> Kasparov would have gone -4 =5 in his first 9 WC games vs Karpov. |
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Kibitzing
sac: 30.Nf6