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Mikhail Botvinnik vs David Bronstein
Botvinnik - Bronstein World Championship Match (1951), Moscow URS, rd 23, May-08
King's Indian Defense: Fianchetto Variation. Immediate Fianchetto (E60)  ·  1-0
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Jun-14-12  Everett: <erniecohen: <oshkar72,perfideous> Bronstein has a draw well in hand until move 52. Proper defense is to keep his s at a7 and c6/e7 so as to be prepared to play b5 if white moves his off of the a6-f1 diagonal to go after the d pawn. If white tries to go after the b6 pawn with his DSB, Bronstein takes the opportunity to bring his s to c6 and f5. White then has to trade his LSB for the c6 (after which the Black king gets back in time to stop the a pawn), or trade h-pawns, leaving an easily drawn position (because all of the pawns are on the same side).>

Ive played around in this position for a bit vs Shredder on the iPhone, and it seems to be true. Anyone see a flaw in this plan?

Also, the fact that Black is better with best play by move 35, as pointed out by <Peligrosopatzer> is remarkable. Seems the more we delve into these old games, the "story" needs to be changed quite a bit.

Oct-21-12  Conrad93: Bronstein had a chance for a much better game. Botvinnik's opening was rather strange.
Dec-13-13
Premium Chessgames Member
  RandomVisitor: After 36...Nxb3+


click for larger view

Rybka 4.1 x64:

<[+0.00] d=36 37.Kb2> Na5 38.e4 Nc6 39.exd5 exd5 40.Kc3 Kf7 41.Bd3 Ke6 42.h4 Ne7 43.h5 Kd7 44.Bh4 Ke6 45.Be1 Nc7 46.Kb4 Kd7 47.Bf2 Nc6+ 48.Kc3 Ne7 49.Kb4 Nc6+ 50.Kc3 Ne7 51.Kb4 Nc6+ 52.Kc3

Dec-13-13
Premium Chessgames Member
  RandomVisitor: After 39.e4 black has knights on the rim that are dim:


click for larger view

perhaps he should de-rim them:

[+0.00] d=31 39...Nc6 40.exd5 exd5 41.Bd3 Ke6 42.h4 Ne7 43.h5 Kd7 44.Bh4 Ke6 45.Be1 Nc7 46.Kb4 Kd7


click for larger view

and safely achieve a draw

Dec-13-13
Premium Chessgames Member
  RandomVisitor: Watch how Rybka4.1 sacrifices 2 pawns in the final position in a last-ditch effort to hold the game. Does it work?


click for larger view

Rybka 4.1 x64:

[+1.99] d=32 57...b5 58.axb5 b6 59.Kd3 Ng8 60.Bxd5 Nf6 61.Be4+ Kf7 62.Bg2 Nd6 63.Bf4 Nxb5 64.Kc4 Na7 65.Bb7 Nd7 66.Bd6 Ke6 67.Bc7 Kf7 68.Bd5+ Ke8 69.Bf3 Nf6 70.d5 Nc8 71.Be5 Ke7 72.Kb5 Kf7

Dec-13-13
Premium Chessgames Member
  FSR: It's always struck me as bizarre that Bronstein resigned in the final position.
Dec-14-13
Premium Chessgames Member
  RandomVisitor: Bronstein:

"I have been asked many, many times if I was obliged to lose the 23rd game and if there was a conspiracy against me to stop me from taking Botvinnik's title. A lot of nonsense has been written about this. The only thing that I am prepared to say about all this controversy is that I was subjected to strong psychological pressure from various origins and it was entirely up to me to yield to that pressure or not."

Jan-16-14
Premium Chessgames Member
  WCC Editing Project: <RandomVisitor:> Bronstein:

<"I have been asked many, many times if I was obliged to lose the 23rd game and if there was a conspiracy against me to stop me from taking Botvinnik's title. A lot of nonsense has been written about this. The only thing that I am prepared to say about all this <<<controversy>>> is that I was subjected to strong psychological pressure from various origins and it was entirely up to me to yield to that pressure or not...">

And now continuing on with the citation a bit:

<...Let's leave it at that. I had <<<reasons not to become the World Champion>>> as in those times such a title meant that you were entering an official world of chess bureaucracy with many formal obligations. Such a position is not compatible with my character. Since my childhood I have enjoyed freedom and despite the country that I grew up in, I have tried to live all my years in this spirit and I am very happy that today I feel the same and can enjoy my freedom.">

Source:

David Bronstein and Tom Furstenberg, "The Sorcerer's Apprentice" (Cadogan 1995), p.16

Feb-25-14  Corndog2: Bronstein, one of the greatest players who should have probably become world champion.
Jun-06-14  Candy Man: In their match for the World championship, Botvinnik didn't win a single game during the first 5 hours of play; 4 of his 5 victories were in fact achieved after adjournment. Bronstein, OTOH won 4 games from Botvinnik before the first time control! Forgive me for holding Bronstein to be at least equal to Botvinnik.
Jun-06-14
Premium Chessgames Member
  Petrosianic: Or at least equal to Botvinnik in 1951. But if the result of the match didn't prove that to someone, I can't imagine that counting who won the most games before Move 40 would do the job either.
Jun-16-14
Premium Chessgames Member
  offramp: We all must have had episodes of hypnosis/self-hypnosis; where you totally believe you have a won position, that your opponent has no chance, that he is an idiot for even continuing - and soon he resigns.

But when you examine the game later you had nothing! You had deluded yourself. Your opponent had picked up on your vibe and thought his position was worse. Soon he had made it really worse and given up.

Something like that might have happened here.

Jun-16-14  ughaibu: Corndog2's post provokes the complimentary question: who were the least great players who should have probably become world champion?
Jun-16-14
Premium Chessgames Member
  offramp: <ughaibu: Corndog2's post provokes the complimentary question: who were the least great players who should have probably become world champion?>

As much as I like him personally - and he is a very good player - Michael Adams was one move away from being World Champion... I am sorry Michael, it just would not have been right.

Nov-05-14  erniecohen: <offramp> When was Michael Adams one move away from being World Champion?
Nov-05-14
Premium Chessgames Member
  MissScarlett: He means Kasimdzhanov vs Adams, 2004 where Mickey missed 42...Qe4, winning the game, the FIDE crown and a big money reunification match with Kasparov. Tragedy is too small a word.
Nov-05-14
Premium Chessgames Member
  keypusher: < The only thing that I am prepared to say about all this <<<controversy>>> is that I was subjected to strong psychological pressure from various origins and it was entirely up to me to yield to that pressure or not...>

What a weasel Bronstein was. Typical of him to make an accusation that cannot be falsified or even denied.

Nov-05-14
Premium Chessgames Member
  TheFocus: <keypusher> <What a weasel Bronstein was. Typical of him to make an accusation that cannot be falsified or even denied.>

I agree. Most of his comments sound like sour grapes.

He was never able to get a second chance now, did he?

I think he played some nice games, but I am not a Bronstein fan.

Apr-20-15  makinavaja: It is interesting and strange too... Nobody, even Botvinnik, mentions the "lesson" that Flohr - by the way, one of his "seconds"- taught him in 1933 to play such endings. The game is Flohr-Botvinnik 1933. You can find it easily here.
Apr-24-17  Toribio3: The power of two bishops in the endgame can not be ignored!
Sep-02-17  andrea volponi: 52...Ne7!=
Oct-25-17
Premium Chessgames Member
  plang: While 5..c6 seemed logical given that a draw would help Bronstein he was critical afterwards that he did not play something more active more in keeping with his style. 7 Nh3 avoided theory and invited Bronstein to give up the 2 bishops which he did with 7..Bxh3!?. 19..Rc2 20 Nb4..Rxb2? 21 Bxe4..dxe 22 Bc3..Re2 23 Rfc1..Rc8 24 Kf1..Rxc3 25 Kxe2..Rxb2 would have cost Black the exchange. 22..Nf5 looks like an improvement forcing White to play f4 (ur even better a move later 23..Nf5). 26 b3? created weaknesses on the queenside; 26 Bh4 was an alternative.

Bronstein on 33..Rxc1:
"Pointless. After 33..Rc6 White would have had to solve the problem of his b-pawn in a less favorable situation. But I captured on c1 not so as to win a pawn, no, I merely wanted to tie down White's pieces by occupying a3,b4 and a5 with my minor pieces."

He referred to 35..Bxc1? as his worst mistake of the match giving White practical winning chances.

39..f5? further opening the position made little sense. Timman and Muller each considered 52..Nc8?! to be the losing move saying that 52..Ne7 would likely have drawn. Timman pointed out that in the final position had the knight been on a7 rather than e7 that Black would have had no problems.

Although Bronstein had many chances to draw the game he made a number of decisions earlier in the game that gave Botvinnink exactly the type of position he needed with practical chances to win.

Oct-26-17
Premium Chessgames Member
  kingscrusher: RandomVisitor: You need to use an engine which doesn't have a null move pruning optimisation. Otherwise it is difficult to analyse a lot of endgames or chess problems where the power of zugzwang is a major factor.

The way to win is shown in my PGN analysis:

[Event "Botvinnik - Bronstein World Championship"] [Site "Moscow URS"]
[Date "1951.05.08"]
[Round "23"]
[White "Mikhail Botvinnik"]
[Black "David Bronstein"]
[Result "1-0"]
[ECO "D71"]
[Annotator "Gavriel,Tryfon"]
[PlyCount "129"]
[EventDate "1951.??.??"]

1. d4 Nf6 2. c4 g6 3. g3 c6 (3... Bg7 4. Nf3 O-O 5. Bg2 d6 6. O-O) 4. Bg2 d5 5. cxd5 cxd5 6. Nc3 Bg7 7. Nh3 Bxh3 (7... O-O 8. Nf4 e6 9. h4 Nc6 10. h5 b6 11. Kf1 Re8 12. hxg6 hxg6 13. Kg1 Bb7 14. e3 $11) 8. Bxh3 Nc6 9. Bg2 e6 10. e3 O-O 11. Bd2 Rc8 12. O-O Nd7 13. Ne2 Qb6 14. Bc3 Rfd8 15. Nf4 Nf6 16. Qb3 Ne4 17. Qxb6 axb6 18. Be1 Na5 19. Nd3 Bf8 (19... Rc2 20. f3 Nd6 21. Rf2 $14) 20. f3 Nd6 21. Bf2 Bh6 (21... Rc2 22. Rfc1 Rdc8 23. Rxc2 Rxc2 24. Rc1 Rd2 (24... Rxc1+ 25. Nxc1 $14) 25. Bf1) 22. Rac1 Nac4 23. Rfe1 Na5 24. Kf1 Bg7 25. g4 Nc6 26. b3 Nb5 27. Ke2 Bf8 28. a4 Nc7 (28... Na3 29. f4 b5 30. f5 bxa4 31. bxa4 Ra8 32. fxe6 fxe6 33. Nf4 Kf7 34. e4 $11) 29. Bg3 Na6 30. Bf1 f6 31. Red1 Na5 32. Rxc8 Rxc8 33. Rc1 Rxc1 34. Nxc1 Ba3 35. Kd1 Bxc1 36. Kxc1 Nxb3+ 37. Kc2 Na5 38. Kc3 Kf7 39. e4 f5 (39... Nc6 $11 40. exd5 exd5 41. Bb5 Ke6 42. Bd3 Kd7 43. Bh4 Ke6) 40. gxf5 gxf5 41. Bd3 Kg6 42. Bd6 (42. Bc2 Kh5 43. exd5 exd5 44. Bxf5) 42... Nc6 43. Bb1 Kf6 44. Bg3 fxe4 45. fxe4 h6 46. Bf4 h5 47. exd5 exd5 48. h4 Nab8 49. Bg5+ Kf7 50. Bf5 Na7 51. Bf4 Nbc6 52. Bd3 Nc8 53. Be2 Kg6 54. Bd3+ Kf6 55. Be2 Kg6 56. Bf3 N6e7 57. Bg5 Game ended here Ng8 (57... b5 58. axb5 b6 59. Kd3 Ng8 60. Bxd5 Nf6 61. Bc6 (61. Be4+ ♘ot sure this wins Kf7 62. Bg2 Nd6 63. Bf4 Nxb5 64. Kc4 Na7 65. Bb7 Nd7 66. Bd6 Ke6 67. Bc7 Kf7 68. Bd5+ Ke8 69. Bf3 Nf6 70. d5 Nc8 71. Be5 Ke7 72. Kb5 Kf7) 61... Kf5 62. Kc4 Nd6+ 63. Kb4 Nc8 64. Bf3 Nd6 65. d5 (65. Be3 Nc8 66. Kb3 Nd6 67. Bc6 Ke6 68. Bf4 Nf5 69. Kc4 Ne7 $11) 65... Ke5 (65... Nc8 66. Bxf6 Kxf6 67. Bxh5 Ke5 68. Bg4 Kd6 69. Bxc8) (65... Kg6 66. Bxf6 Kxf6 67. Bxh5) (65... Nde8 66. Be3) 66. Bxf6+ Kxf6 67. Bxh5 Kf5 ( 67... Ke5 68. Bf3 Nf5 69. h5 Kf6 70. Kc3 Ke5 71. Kd3 Kf6 72. Be2 Nd6 73. Kd4 Nf5+ 74. Ke4 Nd6+ 75. Kf4 Nf7) 68. Bf3 Ke5 69. h5 Nf7 70. Kc3 Kf4 71. Be2 Ke5 72. Bf1 Nh6 73. Bg2 Nf7 74. Kd3 Nh6 75. Ke3 Nf7 76. Bh3 Kxd5 77. Kf4 Kc5 78. Be6 Nd8 79. Kf5 Nxe6 80. Kxe6) (57... Kf5 58. Bxh5 Ng8 59. Kb4 Nd6 60. Bf3 Ne4 61. Kb5 Nc3+ 62. Kxb6 Nxa4+ 63. Kxb7 Nc3 64. Kc6 Nf6 65. Bc1 Kg6 66. Be3 $16) 58. Kb4 Nge7 59. Bxe7 Nxe7 60. Kb5 Nf5 61. Bxd5 Nxd4+ 62. Kxb6 Kf6 63. a5 Ke7 64. Bxb7 Ne6 65. a6 1-0

Cheers, K

Oct-26-17
Premium Chessgames Member
  kingscrusher: Basically, let me try and type out the relevant bit:

57...b5
58 axb5 b6
59 Kd3 Ng8
60 Bxd5 Nf6
61 Bc6 Kf5
62 Kc4 Nd6+
63 Kb4 Nc8
64 Bf3 Nd6
65 d5!! {BOOM! - this is where you need a "REAL ENGINE" like Houdini, which doesn't do a Null move pruning optimisation). Rybka will be content to keep an advantage and forever more not increasing it here.

65 ... Ke5
66 Bxf6 Kxf6
67.Bxh5

White is winning clearly from this position.

Cheers, K

Oct-26-17
Premium Chessgames Member
  kingscrusher: Actually checking with the latest Houdini, on what I showed there, 63.. Ke6 seems stable for black:

3: Mikhail Botvinnik - David Bronstein, Botvinnik - Bronstein World Championship 1951


click for larger view

Analysis by Houdini 6.02 x64-pext:

1. ± (1.34): 64.Bf4 Nf5 65.Kc4 Ne7 66.Bc1 Ned5 67.Bb7 Kd6 68.Bg5 Ke6 69.Bc8+ Kd6 70.Bc1 Ke7 71.Bd2 Kd6 72.Bf5 Ke7 73.Bh3 Kd6 74.Bc8 Ke7 75.Bb7 Ke6 76.Ba8 Ne7 77.Bf4 Ned5 78.Bg5 Kd6 79.Bh6 Ke6 80.Bb7 Kd6 81.Bc8 Ke7 82.Bc1 2. ⩲ (0.62): 64.Kb3 Nf5 65.Bg2 Nxd4+ 66.Kc4 Nf5 67.Bh3 Ng4 68.Bd8 Nd6+ 69.Kb4 Nc8 70.Bc7 Kd5 71.Ka4 Ke6 72.Kb3 Kd7 73.Bh2 Nd6 74.Kb4 Ke6 75.Bg1 Nc8 76.Bg2 Nf6 77.Ka4 Ng4 78.Bd4 Ne5 79.Bf2 Ng4 80.Bg1 Ne5 81.Bh3+ Ng4 82.Kb4 Ke7 83.Bd4 Ke6 84.Bg2 Ne5 85.Bh1 Nd3+ 86.Ka4 Ne5 87.Ba8 Nd7 88.Bf3 Nf6 89.Be2 3. ⩲ (0.62): 64.Bf3 Nf5 65.Bg2 Nxd4 66.Kc4 Nf5 67.Bh3 Ng4 68.Bd8 Nd6+ 69.Kb4 Nc8 70.Bc7 Kd5 71.Ka4 Ke6 72.Kb3 Kd7 73.Bh2 Nd6 74.Kb4 Ke6 75.Bg1 Nc8 76.Bg2 Nf6 77.Ka4 Kf5 78.Bd4 Ke6 79.Bf3 Ng4 80.Bb7 Nd6 81.Bc6 Nc8 82.Kb4 Ne5 83.Bh1 Nd3+ 84.Ka4 Ne5 85.Ba8 White is clearly better

(Gavriel, 26.10.2017)

Maybe it was a kind of fortress draw after all.

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