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Mikhail Botvinnik vs Igor Bondarevsky
USSR Absolute Championship (1941), Leningrad- Moscow URS, rd 14, Apr-15
Spanish Game: Closed Variations (C84)  ·  1/2-1/2

ANALYSIS [x]

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Kibitzer's Corner
Aug-25-07
Premium Chessgames Member
  whiteshark: http://chesspro.ru/_images/material...
Aug-25-07  euripides: Black has an extra passed pawn, with pawns on both wings, and a good bishop in a reasonably open position, but he cannot break through. And people say rook and pawn endings are drawish :-)
Aug-25-07  laskereshevsky: The white position is completly lost.

But Black mislaid several time the winning path....

for istance in this position:


click for larger view

Botvinnik wrote in the tournament's book:

<"A win could have been forced by 39...♗d6 (in place of 39..♙f5;) 40.♗f2 ♗c5 41.♗e1 ♔b6 42.♗d2 ♗d6 43.♔d4 ♔c6 44.♗e1 ♗e5+ 45.♔d3 ♔c5 46.♗d2 ♗a1 47.♗e1 ♙d4 48.♗d2 ♗c3 49.♗xc3 ♙dxc 50.♔xc3 ♙a5


click for larger view

and the Black ♔ pass through">...

Aug-26-07  euripides: <lasker> thanks - the winning method is interesting. I'm not surprised there's a win but I still find it instructive that it was hard enough for Bondarevsky to miss, especially if he was winning at the adjournment.

39...f5 looks slightly risky, moving a pawn so soon before the time control. Black still has a spare tempo on the king's side after f5, so the idea in Botvinnik's line might still work (f5 allows Bg5 and Be7 but white doesn't seem to have time to stop the king getting to b4). However, perhaps White can play Bc3 at some stage forcing g6 after which Black no longer has the spare tempo and the K+P ending seems to be drawn.

Did Bondarevsky miss a win after the adjournment as well ?

Aug-26-07  laskereshevsky: <euripides>
In the game position:


click for larger view

The above winning line dsnt work with the p in f5 cause now white can play:

40.♗f2 ♗d6 41.♗d4 ♙g6 42.♗e3 ♗c5 43.♗g5 and the White♗ could disturb the Black♔ from rear.

But even if Bondarevsky lost this chances, he had another winning move at the 53th move...


click for larger view

In place of 53...♙g3?

53...♙gxf+ 54.♔xf3 ♗e5 55.♗d8 ♔g6 56.♗e7 ♔f5 57.♙g4+ (otherwise 57...♙h5)...♔g6 58.♗d8 ♗f6 59.♗a5 ♔g5 60.♗e1 ♙d4 <"Bondarevsky could have won another gruelling end-game from me in this tournament. Now a draw is obvious, and Black's further efforts appear to be pointless">

BTW, <eur>, My pleasure....

Aug-26-07  euripides: <lasker> I see - actually this mistake is odder because there had presumably been an adjournment and the play in Botvinnik's line seems more natural than the creation of a target by 53...g3.
Dec-08-16  edubueno: Bondarevsky era mucho mejor que Botvinik, pero no fue elegido. Se plegó al "nuevo campeón" y dejó que MB empatara esta partida y luego le ganara otras dos.
Dec-09-16  RookFile: Sloppy endgame play by Bondarevsky. He rushed his pawns ahead. The golden rule in these positions is: "Do not hurry".

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