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Subject: Re: Bishop Ending #5

Author: Ed Schröder

Date: 10:35:02 11/22/97

Go up one level in this thread


>Posted by Howard Exner on November 22, 1997 at 00:06:56:

>Position #5 Here is the analysis given in Chess Life

>k7/pp6/8/P7/3K4/P7/P4B2/8 w - -
>M. Hasanov - B. Borisov (Russia, 1995)

>1. a4 Kb8 2. Kd5 Ka8 3. Kd6 Kb8 4. Kd7 Ka8
>5. Bh4(I think Bg3 works also. Not Kc8 as b7!
>draws) Kb8 6. Bd8 Ka8 7. Kc8 b6 8. a6 b5
>9. a5 b4 10. Bb6 b3 11. a2xb3 a7xb6 12. b4
>and mates


Rebel9 not found after 3 minutes on ply-17. Rebel doesn't recognize
doubled pawns on the a or h line as a draw. Special end game table
has no entries left. Therefore only Bishop + one pawn is supported
for a draw :(



>New Position #6

>8/Bpk5/8/P2K4/8/8/8/8 w - - id "Paulsen - Metzer" bm Kd4;

>This is also from the same Chess Life article.

>The win is given as:
>1. Kd4! (Kc4 b7-b5+ or Kc5 b7-b6+ are drawing positions) Kc6
>2. Bb6 Kd6 3. Kc4 Kc6 4. Kb4 Kd6 5. Kb5 Kd7 6. Kc5 Kc8
>7. Ba7! Kd7 8. Bb8

>Here Rebel 8 seems to want to play Kd4 as it gets the (+) indicator
>during analysis but at 15:00 it still likes Kc5. The cache fills up
>quickly here so I wonder if it is hitting a wall at 30 ply?

I don't think so as there are only few extensions in such positions.
Anyway Rebel9 reports:

00:39  15.08  6.43  Kd4
01:21  16.00  5.21  Kd4
02:29  17.00  6.29  Kd4
06:02  18.00  5.89  Kd4

and steady.

Machine PII-266, hash=28 Mb

- Ed -



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