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Subject: Re: Endgame Test Position Anand vs Topalov

Author: Terry McCracken

Date: 19:28:03 02/25/05

On February 25, 2005 at 10:20:30, Robert Hyatt wrote:

>On February 25, 2005 at 02:12:45, Tony Nichols wrote:
>
>>On February 25, 2005 at 00:00:44, Terry McCracken wrote:
>>
>>>Does your program find Be2+!....?
>>>
>>>[D]8/8/8/1k6/4p1B1/8/P2K1p2/8 w - - 0 56
>>>
>>>Terry
>>
>>Good Test
>>Shredder 9 at 35 ply likes Ke2+-
>>Junior 9 at 31 ply likes Ke2 +/-
>>Fritz 8 at 24 ply likes Ke2 +/-
>>Hiarcs 9 at 19 ply likes Ke2 +/-
>>surprisingly Fritz 5.32 finds Be2 at 15 ply! It also shows that Bh3 also wins.
>>Crafty 19.01 also finds Be2
>>Regards
>>Tony
>
>
>This is not that hard:
>
>               20    13.69   0.01   1. Ke2 e3 2. Bh3 Kb4 3. Kxe3 <EGTB>
>                                    (s=6)
>               20    18.05   0.29   1. Be2+ Kb4 2. Kc1 Ka3 3. Kb1 e3 4.
>                                    Ka1 Kb4 5. Kb2 Ka4 6. a3 Ka5 7. Kb3
>                                    Kb6 8. Kb4 Kc6 9. a4 Kb6 10. a5+ Kb7
>                                    11. a6+ Ka7 12. Kc5 (s=3)
>               20->  18.63   0.29   1. Be2+ Kb4 2. Kc1 Ka3 3. Kb1 e3 4.
>                                    Ka1 Kb4 5. Kb2 Ka4 6. a3 Ka5 7. Kb3
>                                    Kb6 8. Kb4 Kc6 9. a4 Kb6 10. a5+ Kb7
>                                    11. a6+ Ka7 12. Kc5 (s=6)
>               21    19.91   0.31   1. Be2+ Kb4 2. Kc1 Ka3 3. Kb1 e3 4.
>                                    Ka1 Kb4 5. Kb2 Ka4 6. a3 Ka5 7. Kb3
>                                    Kb6 8. Kb4 Kc6 9. a4 Kb6 10. a5+ Ka7
>                                    11. Kc5 Kb7 12. Kd6 (s=5)
>               21->  27.07   0.31   1. Be2+ Kb4 2. Kc1 Ka3 3. Kb1 e3 4.
>                                    Ka1 Kb4 5. Kb2 Ka4 6. a3 Ka5 7. Kb3
>                                    Kb6 8. Kb4 Kc6 9. a4 Kb6 10. a5+ Ka7
>                                    11. Kc5 Kb7 12. Kd6 (s=6)
>                22    29.05   0.53   1. Be2+ Kb4 2. Kc1 Ka3 3. Kb1 e3 4.
>                                    Ka1 Kb4 5. Kb2 Ka4 6. a3 Ka5 7. Kb3
>                                    Kb6 8. Kb4 Kc6 9. a4 Kd5 10. a5 Kd6
>                                    11. a6 Kc6 12. Kc4 <HT> (s=5)
>               22->  44.20   0.53   1. Be2+ Kb4 2. Kc1 Ka3 3. Kb1 e3 4.
>                                    Ka1 Kb4 5. Kb2 Ka4 6. a3 Ka5 7. Kb3
>                                    Kb6 8. Kb4 Kc6 9. a4 Kd5 10. a5 Kd6
>                                    11. a6 Kc6 12. Kc4 <HT> (s=5)
>               23    46.02     +1   1. Be2+!!
>               23    46.47     +3   1. Be2+!!
>               23    47.61     +M   1. Be2+!!
>               23     1:29   6.66   1. Be2+ Ka4 2. Kc1 Ka3 3. Kb1 Ka4 4.
>                                    Kb2 Kb4 5. a3+ Ka4 6. Bc4 Ka5 7. Kb3
>                                    Kb6 8. a4 Ka5 9. Bf1 Kb6 10. Kb4 Kc6
>                                    11. Be2 Kd5 12. a5 Kd4 <HT> (s=4)
>
>Some might be confused as the 5 piece egtb's will lead them to play Ke2 with a
>draw score if they think white is losing otherwise...

Shredder can't find it...CM can with or without tablebases.

I'ts easy for humans or at least for me, but not all programs.

Can Crafty find it quickly without EGTB's?

Re: Endgame Test Position Anand vs Topalov Robert Hyatt 21:20:05 02/25/05
- Here's a Couple of Positions from My Games, See How Crafty Does. Terry McCracken 01:21:02 02/26/05
  - Here's a Couple of Positions from My Games, See How Crafty Does Diagrams Terry McCracken 01:23:28 02/26/05

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