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Subject: Re: Can Bob fix this?

Author: Dann Corbit

Date: 10:56:33 10/06/03

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On October 06, 2003 at 13:51:29, Slater Wold wrote:

>[D]8/6NK/8/1Bk5/P5q1/8/8/8 w - - 0 107
>
>A lot of engines, after a lot of time can see this is lost.
>
>Crafty cannot.
>
>Any ideas on how to fix this?  Other than waiting for Eugene to make the TB?  :)

Are you sure that it is lost?

What is the sequence of moves that wins for black?

White(1): epdpfga \islost.epd islost.out
PFGA: EPD record: 1
end-game phase
              clearing hash tables
              time surplus   0.00  time limit 16:39 (16:39)
              depth   time  score   variation (1)
                9     1.79  -0.01   1. Kh6 Qb4 2. Be8 Qf4+ 3. Kh7 Qe4+
                                    4. Kh8 Qxe8+ <EGTB>
                9->   2.76  -0.01   1. Kh6 Qb4 2. Be8 Qf4+ 3. Kh7 Qe4+
                                    4. Kh8 Qxe8+ <EGTB>
               10     3.29  -0.01   1. Kh6 Qb4 2. Be8 Qf4+ 3. Kh7 Qe4+
                                    4. Kh8 Qxe8+ <EGTB>
               10->   3.69  -0.01   1. Kh6 Qb4 2. Be8 Qf4+ 3. Kh7 Qe4+
                                    4. Kh8 Qxe8+ <EGTB>
               11     4.72  -0.01   1. Kh6 Qb4 2. Be8 Qf4+ 3. Kh7 Qe4+
                                    4. Kh8 Qxe8+ <EGTB>
               11->   5.70  -0.01   1. Kh6 Qb4 2. Be8 Qf4+ 3. Kh7 Qe4+
                                    4. Kh8 Qxe8+ <EGTB>
               12     7.21  -0.01   1. Kh6 Qb4 2. Be8 Qf4+ 3. Kh7 Qe4+
                                    4. Kh8 Qxe8+ <EGTB>
               12->   8.21  -0.01   1. Kh6 Qb4 2. Be8 Qf4+ 3. Kh7 Qe4+
                                    4. Kh8 Qxe8+ <EGTB>
               13    10.56  -0.01   1. Kh6 Qb4 2. Be8 Qf4+ 3. Kh7 Qe4+
                                    4. Kh8 Qxe8+ <EGTB>
               13->  12.21  -0.01   1. Kh6 Qb4 2. Be8 Qf4+ 3. Kh7 Qe4+
                                    4. Kh8 Qxe8+ <EGTB>
               14    14.94  -0.01   1. Kh6 Qb4 2. Be8 Qf4+ 3. Kh7 Qe4+
                                    4. Kh8 Qxe8+ <EGTB>
               14->  15.50  -0.01   1. Kh6 Qb4 2. Be8 Qf4+ 3. Kh7 Qe4+
                                    4. Kh8 Qxe8+ <EGTB>
               15    23.72  -0.01   1. Kh6 Qb4 2. Be8 Qf4+ 3. Kh7 Qe4+
                                    4. Kh8 Qxe8+ <EGTB>
               15->  24.93  -0.01   1. Kh6 Qb4 2. Be8 Qf4+ 3. Kh7 Qe4+
                                    4. Kh8 Qxe8+ <EGTB>
               16    44.00  -0.01   1. Kh6 Qb4 2. Be8 Qf4+ 3. Kg6 Qe4+
                                    4. Kf7 Kb4 5. Ne6 Qb7+ 6. Kf8 Qc8 7.
                                    Ng7 Qxe8+ <EGTB>
               16->  47.29  -0.01   1. Kh6 Qb4 2. Be8 Qf4+ 3. Kg6 Qe4+
                                    4. Kf7 Kb4 5. Ne6 Qb7+ 6. Kf8 Qc8 7.
                                    Ng7 Qxe8+ <EGTB>
               17     1:15  -0.01   1. Kh6 Qb4 2. Be8 Qf4+ 3. Kg6 Qe4+
                                    4. Kf7 Kb4 5. Ne6 Qb7+ 6. Kf8 Qc8 7.
                                    Ng7 Qxe8+ <EGTB>
               17->   1:17  -0.01   1. Kh6 Qb4 2. Be8 Qf4+ 3. Kg6 Qe4+
                                    4. Kf7 Kb4 5. Ne6 Qb7+ 6. Kf8 Qc8 7.
                                    Ng7 Qxe8+ <EGTB>
               18     2:06  -0.01   1. Kh6 Qb4 2. Be8 Qf4+ 3. Kg6 Qe4+
                                    4. Kf7 Kb4 5. Ne6 Qb7+ 6. Kf8 Qc8 7.
                                    Ng7 Qxe8+ <EGTB>
               18->   2:08  -0.01   1. Kh6 Qb4 2. Be8 Qf4+ 3. Kg6 Qe4+
                                    4. Kf7 Kb4 5. Ne6 Qb7+ 6. Kf8 Qc8 7.
                                    Ng7 Qxe8+ <EGTB>
               19     2:30   1/16*  1. Kh6



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