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David Bronstein vs Alexander Kotov
analysis (1949) (probably analysis), Moscow
Queen's Gambit Declined: Semi-Tarrasch Defense. Pillsbury Variation (D41)  ·  1-0


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Kibitzer's Corner
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Premium Chessgames Member
  Benzol: <Jay Mantorin> After 1...♕e1+ White can reply 2.♕f1 whereas 1...♖xa3 attacks both White's queen and the rook at a1. After 2.♕b1 ♖xa1 3.♕xa1 your ♕e1+ is a winner. Also White can't play 2.♖xa3 because ♕e1+ is again the winner and 2.bxa3 is met by ♕xa1+ winning.
Dec-17-06  Fisheremon: <Tariqov: My move was 29Re7!? which wins the exchange afterRxe7, Bxe7 and seems to be a nice move. Any daring refutors?> Right 29. Re7 leads to an easy win. As I understand Bronstein's analysis just shows one geometric variation (not for a clear win), e.g. the position after 28. Rxg7 Kxg7 29. Rxe5 d3 30. Kf1 Rc7 should be estimated as and not so easy to win.
Premium Chessgames Member
  Chnebelgrind: It's a bit strange that we get presented an analyses and not a real game. See comment on move 24. Bxg5 <A draw was agreed in this rich position. What follows is Bronstein's analysis.>
Dec-17-06  Silverstrike: Interesting, that's the first sunday puzzle I've got in a while. I think it's only the second overall.
Dec-17-06  Rajiv Herman Kramer: Why would black play f5 in the analysis after the draw. I wouldn't play f5 because it weakens the kingside pawnstructure. I think Nd8 is a better move because the bischop has more freedom and you can activate the night to e5. The only downside is the loss of a pawn on a7. I also analysed the position after Bxg5 with shredder 9 and Kh8 was the best move according to shredder.
Dec-17-06  DeepThought: Bronstein's analysis contains a lot of errors, may be it's to tell us: Now he has gone too far, but as he is in chess heaven already, God will forgive him and he in turn promises this will be his last puzzle.

1. 24..f5 is worse than Kh8
2. 26..Ne5 is worse than Na5
3. Rc6 is worse than Rc2
But the worst blunder is
4. 28..Kxg7 would only have lost the quality; instead, 28..Rxe6 directly loses the game after Re7 (take a look at your favourite chess program).

Dec-17-06  hanstholmhavn: Fantastic DeepThought. 29. Re7! seems to be an easy win. But anyways I think Bronstein's variation was a bit more aesthetically pleasing. But I guess in chess the beautiful must always be accompanied by accurate calculation to be truly beautiful....
Dec-17-06  HelaNubo: <DeepThought: Bronstein's analysis contains a lot of errors, may be it's to tell us: Now he has gone too far, but as he is in chess heaven already, God will forgive him and he in turn promises this will be his last puzzle...>

All this is true, but I suddenly remembered Goethe's opinion about the "weaknesses" of Euripides: "You have the right to find fault with him, but only staying on your knees".

Dec-17-06  dakgootje: <chessmoron>Thanks for that puzzle, that way i at least got 1 puzzle today ^^
Premium Chessgames Member
  alexmagnus: Damn, I started with Rxe5...
Premium Chessgames Member
  mig55: Black plays and wins

click for larger view


Dec-17-06  consul: I agree with DeepThought. I mean, yes, the puzzle is interesting, but arises from a non-real match. At first i thought the agreement for the draw was wrong... i thought Bronstein's analysis had the aim to show that... For miq55, i think 1 .. d2 will work (followed by 2 .. ♗e6 and 3 .. ♔d7)
Premium Chessgames Member
  mig55: Indeed,Consul, Czerniak-Sacharovsky 1963...
Dec-17-06  MarvinTsai: 29.Rxe5 lead to a position very difficult for computers, and me. The black king and rook can't move, the black bishop can't reach white bishop and knight. The follow-up would have been white grabbed as many pawns as possible and black just couldn't stop it. Maybe black saw this so he resigned. However, the passed pawn can tie white king too, my question is, is it really that easy to win this endgame?
Dec-17-06  handro1104: How can White possibly win after 32...d3 33 Kf1 Bb5 34 Ke1 a6? There is no way White can take anything.
Dec-17-06  insanecharka: bronstein seems to have greater insight than most
Premium Chessgames Member
  paulalbert: <handro1104> The key idea is in the note: the F4 and threatened H3 and G4 idea, isolating a black P on F5, in whick case NxF5 wins R or in some variations threat of F6 by white's P. If black B protects F5 then K can march and take D3 and then march further, eventually setting up winning K and P endgame if BxR ch in some variations then capture on F5 by N followed by BxF5 and KxF5. I have not analyzed all variations but my sense is that with proper technique this is clearly winnable by white. B cannot create fortress as you suggest, because F4, H3, G4 idea can't be prevented. Paul Albert
Premium Chessgames Member
  Peligroso Patzer: For the full story of the actual outcome of this game, see the note that appears when White's 24th move is displayed, which reads: "A draw was agreed in this rich position. What follows is Bronstein's analysis."
Dec-17-06  sataranj: sundays are made for god.
i m naturally a monday man
Premium Chessgames Member
  Gypsy: To me, using Bronstein's analysis, instead of a real game combo, is a strange but fitting tribute to the man who valued fantasy and imagination in chess above all all other atribut es of the game.

For those who feel cheated, here is a different Bronstein challenge:

click for larger view

Till the last move of the game, White thought that he had a draw. But Black to move -- Bronstein, that is -- won: C Kottnauer vs Bronstein, 1946.

Premium Chessgames Member
  al wazir: After looking at this position for five minutes, including both candidate moves 28. Rxe5 and 28. Rxg7, I decided I would never have had enough time to find a win OTB.

So whaddaya know, that puts me in the same class as Bronstein!

Incidentally, what does white do after 28...Kxg7 ? 29. Rxe5 leaves the material even. White will probably win the d ♙, but I don't see any way to continue the attack.

Dec-17-06  LIFE Master AJ: Nice.
Premium Chessgames Member
  kevin86: Sunday is the Lord's day-so I will let Him solve this puzzle and take the day off. lol

Not bad,but a little less that Bronstein's better ones in the last few days-considering it was just analysis and not over the board chess.i

Premium Chessgames Member
  Richard Taylor: I found this "analysis" but I wasn't sure it was a win ( I was pretty sure that the King being trapped meant Black should be doomed though) but I would haveplsyed that variation - "in my head" I analysed it but couldn't quite see White getting a win although I did see it when I set the position up again (after the combination) (I had "seen" that the King could march to f8!! So, thinking I had seen it all I started to show my son my brilliance!)in some variations...but I would have still played the combination OTB that Bronstein gives -I saw that and the zugzwang ...

The problem for anyone faced with the position given is that White's position looks as though he has mate in a few moves and there are so many alternatives.

Oct-19-07  ardee: I also saw that 29. Re7! is crushing. But did anybody notice that Black's move 27...Rc6? is weak (losing even) and that 27...Nd3! is much better (probably equal)?
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