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Subject: Re: Simple Endgame for programs without TBs ??

Author: Brian Richardson

Date: 16:12:13 11/21/00

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On November 21, 2000 at 18:27:28, Eduard Nemeth wrote:

>[D]8/2K5/1p6/1P4k1/5p2/8/6P1/8 w - - 0 1
>
>Here a correct analysis:
>
>1. Kc6 Kg4 2. Kd6 Kh4 3. Ke6 Kg5 4. Ke5 Kg4 5. Kf6 Kh4 6. Kf5 Kg3 7. Kg5 f3 8.
>gxf3 Kxf3 9. Kf5 ++-
>
>1.Kxb6 is draw.
>
>By me this winning only Fritz, without TBs !
>
>Eduard

Crafty v17.12 finds the right move, but not the full mate after 1:15 on my
PIII733 at a pretty remarkable depth 23:

               23     1:05   7.12   1. Kxb6 Kg4 2. Kc6 Kg3 3. b6 Kxg2 4.
                                    b7 f3 5. b8=Q f2 6. Qg8+ Kh1 7. Qc4
                                    Kg1 8. Qc5 Kg2 9. Qg5+ Kh1 10. Qh6+
                                    Kg2 11. Qg7+ Kh2 12. Qh7+ Kg1 13. Qg6+
                                    Kh2 14. Qh5+ Kg1 15. Qg4+ Kh1 16. Qf3+
                                    Kg1 17. Qg3+ Kf1 18. Qe5
               23     1:15     ++   1. Kc6!!
               23     1:23   8.19   1. Kc6 Kg4 2. Kd6 Kh4 3. Ke6 Kg5 4.
                                    Ke5 Kg6 5. Kxf4 Kf6 6. g4 Ke6 7. Kg5
                                    Kd5 8. Kg6 Kc5 9. g5 Kxb5 10. Kf7 Kc4
                                    11. g6 <HT>
               23->   1:31   8.19   1. Kc6 Kg4 2. Kd6 Kh4 3. Ke6 Kg5 4.
                                    Ke5 Kg6 5. Kxf4 Kf6 6. g4 Ke6 7. Kg5
                                    Kd5 8. Kg6 Kc5 9. g5 Kxb5 10. Kf7 Kc4
                                    11. g6 <HT>



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