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Viktor Kupreichik vs Adrian Mikhalchishin
Lvov (1988), Feb-??
Spanish Game: Open. Italian Variation (C82)  ·  1-0
ANALYSIS [x]

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Kibitzer's Corner
Nov-16-13
Premium Chessgames Member
  wwall: In Beliavsky and Mikhalchisin's book Winning Endgame Technique, page 9, they point out that 35...Kd5? is a mistake and that Black has an easy draw after 35...Kf6 36.Kf2 Kg6 37.Kf3 [37.f5 Kf6 should draw, but 37...Kg5 38.Ke2 loses] 37...h5 38.gxh5 Kxh5 39.Ke4 Kg4 40.f5 Kg5 41.Kxd4 Kxf5 42.Kc5 Ke5 43.Kb6 Kd6.

After 37...Ke5, the authors say 38.Ke2? is a mistake and that 38.a5 Kd5 39.Ke2 Ke5 40.Kd3 Kd5 41.f6 Ke6 42.Kxd4 Kxf6 43.Kc5 Kg5 44.Kb6 Kxg4 45.Kxa6 h5 46.Kb6 h4 47.a6 and the white pawn queens first and wins. But instead of 39...Ke5, perhaps drawn is 39...Kd6 40.Kd3 Ke5 41.Kc4 Ke4 42.f6 d3 43.Kc3 Ke3 44.f7 d2 45.f8=Q d1=Q 46.Qxh6 Kf3 47.Qxa6 Qc1 48.Kb4 Qb2.

38...h5? is the losing move. Black has to play 38...a5 39.Kf3 [or 39.Kd3 Kd5 40.f6 Ke6 41.Kxd4 Kxf6 =] Kd5 40.Kf4 Kc4 41.f6 d3 42.f7 d2 43.f8=Q d1=Q which should draw.

Aug-13-19  Straclonoor: Initially pawn ending is drawn

Analysis by Stockfish 120719 64 POPCNT:

= (0.00): 35.f4 a5 36.Kf2 Kd5 37.Kf3 Kc4 38.Ke2 Kc5 39.Kd3 Kd5 40.g5 hxg5 41.fxg5 Ke5 42.Kc4 Kf5 43.Kxd4 Kxg5 44.Kc5 Kf5 45.Kb5 Ke6 46.Ka6 Kd7 47.Kb7 Kd6 48.Kb6 Kd5 49.Kxa5 Kc6 50.Kb4 Kb6 51.a5+ Ka7 52.Kb3 Kb7 53.Ka3 Kc6 54.Kb4 Kc7 55.Kb5 Kb7 56.a6+ Ka7 57.Ka5 Kb8 58.Kb4 Ka7

So it seems right that 35....Kd5 is mistake.

Aug-13-19  Retireborn: <Straclonoor> I analyzed this game myself when I was working through the Beliavsky/Mikhalchisin book, and I don't at all agree with their recommended 35...Kf6. After 36.Kf2 Kg6 37.f5+ Kf6 38.Kf3 my engine says White is winning.

So 35...Kd5 is OK and it's 36...Ke4 which loses. 36...Kc4 should draw, as the black king can escort his d-pawn if necessary.

Aug-19-19  Straclonoor: <So 35...Kd5 is OK> Yes. I was wrong.

Analysis by Stockfish 120719 64 POPCNT:

= (0.00): 35...Kd5 36.Kf2 Kc4 37.Ke1 a5 38.Kd2 Kc5 39.Kd3 Kd5 40.f5 Ke5 41.Kc4 Ke4 42.f6 d3 43.Kc3 Ke3 44.f7 d2 45.f8Q d1Q 46.Qxh6+ Kf3 47.Qc6+ Kxg4 48.Qg2+ Kf5 49.Qf2+ Kg4 50.Qc2 Qd6 51.Qe4+ Kg5 52.Kc4 Qb4+ 53.Kd5 Qxe4+ 54.Kxe4 Kf6 55.Kd5 Kf5 56.Kc5 Ke5 57.Kc6 Ke6 58.Kb6 Kd6 59.Kb5 Ke6

<and it's 36...Ke4 which loses> Yes. 36....a5 and 36....Kc4 holds the draw (see analysis below)

Analysis by Stockfish 120719 64 POPCNT:

1. = (0.00): 36...a5 37.Kf3 Kc4 38.Ke2 Kc5 39.Kd3 Kd5 40.f5 Ke5 41.Kc4 Ke4 42.f6 d3 43.Kc3 Ke3 44.f7 d2 45.f8Q d1Q 46.Qxh6+ Kf3 47.Qc6+ Kxg4 48.Qb5 Qa1+ 49.Kc4 Qc1+ 50.Kd4 Qf4+ 51.Kd5 Qc7 52.Qc4+ Qf4 53.Qxf4+ Kxf4 54.Kc5 Ke5 55.Kb6 Kd6 56.Kb5 Kc7 57.Ka6 Kc6 58.Kxa5 Kd7 59.Kb5 Kc7 60.a5 Kb7 61.a6+ Kb8 62.Kc6 Ka7 63.Kc7 Kxa6

2. = (0.00): 36...Kc4 37.Ke1 a5 38.Ke2 Kc5 39.Kd3 Kd5 40.f5 Ke5 41.Kc4 Ke4 42.f6 d3 43.Kc3 Ke3 44.f7 d2 45.f8Q d1Q 46.Qxh6+ Kf3 47.Qc6+ Kxg4 48.Qb5 Qa1+ 49.Kc4 Qc1+ 50.Kd4 Qf4+ 51.Kd5 Qc7 52.Qc4+ Qf4 53.Qxf4+ Kxf4 54.Kc5 Ke5 55.Kb5 Kd5 56.Kxa5 Kc5 57.Ka6 Kc6 58.a5 Kc7 59.Ka7 Kc8 60.Kb6 Kb8 61.a6 Ka8 62.Kc6 Kb8

3. +- (3.03): 36...Ke4 37.f5 Kd5 38.a5 Ke5 39.Ke1 Kd5 40.Ke2 Kd6 41.Kd3 Ke5 42.Kc4 Ke4 43.f6 d3 44.Kc3 Ke3 45.f7 d2 46.f8Q d1Q 47.Qxh6+ Kf3 48.Qxa6 Qc1+ 49.Kb4 Qd2+ 50.Kc5 Qe3+ 51.Kc6 Qe4+ 52.Kb6 Kxg4 53.Qc8+ Kh4 54.Qc3 Qe6+ 55.Kb5 Qd5+ 56.Kb4 Qd6+ 57.Ka4 Qd1+ 58.Ka3 Kg5 59.Qe5+ Kg4 60.Qe6+ Kh5 61.Qc4 Qa1+ 62.Kb4 Qe1+ 63.Qc3 Qb1+ 64.Kc4 Qf1+ 65.Qd3 Qc1+ 66.Kb5 Qg5+ 67.Kb4 Qe7+ 68.Ka4 Qc7 69.a6 Qf4+ 70.Ka5 Qc7+ 71.Kb4 Qf4+ 72.Qc4

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