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Subject: Re: Will be difficult (Crafty 16.19 21 ply analysis)

Author: Michel Langeveld

Date: 08:01:48 10/23/99

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On October 23, 1999 at 04:12:51, Peter Kappler wrote:

>
>I reached this position as Black in a blitz game tonight.
>
>8/1p6/5k1n/8/4P3/5P2/3K4/8 b - -
>

Although Crafty 16.19 gives a high score I think winning will be extremely
diffult:

Kind regards,

Michel Langeveld
------------------------------

pondering enabled.
hash table memory = 48M bytes.
pawn hash table memory = 32M bytes.
EGTB cache memory = 16M bytes.
EGTB access enabled
using tbpath=./TB
6 piece tablebase files found
1179kb of RAM used for TB indices and decompression tables
PFGA: EPD record: 1
end-game phase
              clearing hash tables
              time surplus   0.00  time limit 16666:39 (16666:39)
         nss  depth   time  score   variation (1)
                9     1.26   1.70   1. ... Nf7 2. Ke3 Ne5 3. f4 Ng6 4.
                                    Kf3 b5 5. Ke3 b4
                9->   1.54   1.70   1. ... Nf7 2. Ke3 Ne5 3. f4 Ng6 4.
                                    Kf3 b5 5. Ke3 b4
               10     2.47   1.74   1. ... Nf7 2. f4 Nh8 3. Kc3 Ng6 4.
                                    f5 Ne5 5. Kb4 b6 6. Kb5
               10     2.80   1.76   1. ... Kg5 2. Ke3 Nf7 3. f4+ Kg4 4.
                                    f5 Nd6 5. f6 Nf7 6. Kd4 b5
               10->   3.07   1.76   1. ... Kg5 2. Ke3 Nf7 3. f4+ Kg4 4.
                                    f5 Nd6 5. f6 Nf7 6. Kd4 b5
               11     4.06   2.01   1. ... Kg5 2. Ke3 Nf7 3. f4+ Kg4 4.
                                    f5 Kg3 5. Kd4 Kf4 6. f6 b5 7. Kd5
               11->   5.22   2.01   1. ... Kg5 2. Ke3 Nf7 3. f4+ Kg4 4.
                                    f5 Kg3 5. Kd4 Kf4 6. f6 b5 7. Kd5
               12     5.49     ++   1. ... Kg5!!
               12     9.83   3.49   1. ... Kg5 2. Ke3 Nf7 3. f4+ Kg4 4.
                                    f5 Ng5 5. f6 b6 6. e5 Kf5 7. Kd4 Nf3+
                                    8. Kd5 Nxe5
               12->  11.20   3.49   1. ... Kg5 2. Ke3 Nf7 3. f4+ Kg4 4.
                                    f5 Ng5 5. f6 b6 6. e5 Kf5 7. Kd4 Nf3+
                                    8. Kd5 Nxe5
               13    13.13     --   1. ... Kg5
               13    14.77   3.04   1. ... Kg5 2. Ke3 Nf7 3. f4+ Kg4 4.
                                    f5 Ng5 5. Kd4 Kf4 6. f6 b6 7. Kd5 Nxe4
                                    8. Ke6
               13->  18.18   3.04   1. ... Kg5 2. Ke3 Nf7 3. f4+ Kg4 4.
                                    f5 Ng5 5. Kd4 Kf4 6. f6 b6 7. Kd5 Nxe4
                                    8. Ke6
               14    21.97     --   1. ... Kg5
               14    22.41     ++   1. ... Kg5!!
               14    22.41   3.26   1. ... Kg5 2. Ke3 Nf7 3. f4+ Kg4 4.
                                    f5 Ne5 5. Kd4 Nd7 6. Kd5 Nf6+ 7. Kd4
                                    Kf4 8. e5 Ng4 9. Kc5 <HT>
               14->  27.46   3.26   1. ... Kg5 2. Ke3 Nf7 3. f4+ Kg4 4.
                                    f5 Ne5 5. Kd4 Nd7 6. Kd5 Nf6+ 7. Kd4
                                    Kf4 8. e5 Ng4 9. Kc5 <HT>
               15    34.77     --   1. ... Kg5
               15    41.58   2.83   1. ... Kg5 2. Ke3 Nf7 3. f4+ Kg4 4.
                                    f5 Ne5 5. Kd4 Nd7 6. Kd5 Kf4 7. Kd6
                                    b5 <HT>
               15->  58.06   2.83   1. ... Kg5 2. Ke3 Nf7 3. f4+ Kg4 4.
                                    f5 Ne5 5. Kd4 Nd7 6. Kd5 Kf4 7. Kd6
                                    b5 <HT>
               16     1:00     ++   1. ... Kg5!!
               16     1:55   3.64   1. ... Kg5 2. Ke3 Nf7 3. f4+ Kg4 4.
                                    f5 Ne5 5. Kd4 Nd7 6. f6 Kg5 7. f7 Kf6
                                    8. Kd5 Kxf7 9. e5 Ke7 10. e6
               16->   2:12   3.64   1. ... Kg5 2. Ke3 Nf7 3. f4+ Kg4 4.
                                    f5 Ne5 5. Kd4 Nd7 6. f6 Kg5 7. f7 Kf6
                                    8. Kd5 Kxf7 9. e5 Ke7 10. e6
               17     2:32   3.68   1. ... Kg5 2. Ke3 Nf7 3. f4+ Kg4 4.
                                    f5 Ne5 5. Kd4 Nd7 6. Ke3 Kg3 7. f6
                                    Nxf6 8. Kd4 Nh5 9. e5 Nf4 10. Kc5
               17->   3:10   3.68   1. ... Kg5 2. Ke3 Nf7 3. f4+ Kg4 4.
                                    f5 Ne5 5. Kd4 Nd7 6. Ke3 Kg3 7. f6
                                    Nxf6 8. Kd4 Nh5 9. e5 Nf4 10. Kc5
               18     4:07     --   1. ... Kg5
               18     5:35   1.78   1. ... Kg5 2. Ke3 Nf7 3. f4+ Kg4 4.
                                    f5 Ne5 5. Kd4 Nd7 6. Kd5 Kg5 7. Ke6
                                    Nf8+ 8. Kd5 Kf6 9. Kd6 Nd7 10. Kd5
                                    Nb6+ <HT>
               18     6:40   1.84   1. ... Ke5 2. Ke3 b6 3. f4+ Kd6 4.
                                    Kd4 b5 5. e5+ Kc6 6. Ke4 Kc5 7. f5
                                    b4 8. e6 Ng8 9. Kd3 <HT>
               18     7:03     ++   1. ... Nf7!!
               18     9:18   2.88   1. ... Nf7 2. Ke3 Ne5 3. Kd4 Nc6+ 4.
                                    Ke3 Kg5 5. f4+ Kg4 6. f5 Kg5 7. Kf3
                                    b5 8. Ke3 Ne5 9. Kd4 b4 10. Ke3 Kg4
                                    <HT>
               18     9:49     ++   1. ... Ng8!!
               18->  10:48   3.27   1. ... Ng8
               19    12:12   2.95   1. ... Ng8 2. Ke3 Ne7 3. f4 Ng6 4.
                                    f5 Ne7 5. Kd4 b6 6. Kc4 Ke5 7. Kb4
                                    Nc8 8. Kb5 Kf6 9. Ka6 Kg5 10. Kb7 b5
                                    11. Kxc8
               19->  17:32   2.95   1. ... Ng8 2. Ke3 Ne7 3. f4 Ng6 4.
                                    f5 Ne7 5. Kd4 b6 6. Kc4 Ke5 7. Kb4
                                    Nc8 8. Kb5 Kf6 9. Ka6 Kg5 10. Kb7 b5
                                    11. Kxc8
               20    19:51   2.95   1. ... Ng8 2. Ke3 Ne7 3. f4 Ng6 4.
                                    f5 Ne7 5. Kd4 b6 6. Kc4 Ke5 7. Kb4
                                    Nc8 8. Kb5 Kf6 9. Ka6 Kg5 10. Kb7 b5
                                    11. Kxc8
               20->  27:15   2.95   1. ... Ng8 2. Ke3 Ne7 3. f4 Ng6 4.
                                    f5 Ne7 5. Kd4 b6 6. Kc4 Ke5 7. Kb4
                                    Nc8 8. Kb5 Kf6 9. Ka6 Kg5 10. Kb7 b5
                                    11. Kxc8
               21    39:09     --   1. ... Ng8
               21    44:36   2.51   1. ... Ng8 2. f4 Ne7 3. Kc3 Ng6 4.
                                    f5 Ne5 5. Kd4 Nd7 6. Kd5 Nb6+ 7. Kd6
                                    Na8 8. Kd5 Nc7+ 9. Kd6 Na6 10. e5+
                                    Kxf5 11. e6 Kf6 12. e7 Kf7 13. Kd7
                                    Nc5+ 14. Kd6
               21    47:06     ++   1. ... Nf7!!
               21->  66:09   2.90   1. ... Nf7



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