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Subject: Re: the move that caused the win to be a draw

Author: Dann Corbit

Date: 20:17:13 01/21/02

Go up one level in this thread


On January 21, 2002 at 22:05:39, K. Burcham wrote:

>
>
>
>here black is up 11.22 and still climbing
> [D] 8/r7/8/p2k4/R3p1K1/8/8/8 b - - 0 1
>
>Analysis by Deep Fritz:
>
>5...Kc5!
>  -+  (-5.41)   Depth: 21/37   00:01:54  63547kN, tb=113950
>5...Kc5! 6.Kf4 Kb5 7.Ra1 a4 8.Ke3 a3 9.Kd4 a2 10.Ke3
>  -+  (-6.22)   Depth: 21/37   00:03:22  109187kN, tb=172789
>5...Kc5!
>  -+  (-6.53)   Depth: 22/37   00:05:07  167219kN, tb=250867
>5...Kc5! 6.Kf4 Kb5 7.Ra1 a4 8.Ke3 a3 9.Rb1+ Kc4 10.Rc1+ Kb3 11.Rb1+
>  -+  (-10.91)   Depth: 22/40   00:10:17  366734kN, tb=355327
>5...Kc5!
>  -+  (-11.22)   Depth: 23/43   00:16:23  580604kN, tb=523799
>
>here after black plays 67...Ke5
> [D] 8/r7/8/p3k3/R3p1K1/8/8/8 w - - 0 1
>
>Analysis by Deep Fritz:
>
>6.Kg3!
>  -+  (-2.00)   Depth: 19/27   00:00:24  9429kN, tb=27204
>6.Kg3!
>  -+  (-1.69)   Depth: 20/30   00:00:37  17284kN, tb=45152
>6.Kg3! Ra8 7.Kf2 Kd5 8.Ke3 Kc5 9.Kxe4
>  =  (0.00)   Depth: 20/30   00:00:40  19233kN, tb=50886
>6.Kg3 Ra8 7.Kf2 Kd5 8.Ke3 Kc5 9.Kxe4
>  =  (0.00)   Depth: 21/30   00:00:49  24860kN, tb=67059
>6.Kg3 Ra8 7.Kf2 Kd5 8.Ke3 Kc5 9.Kxe4
>  =  (0.00)   Depth: 22/31   00:01:07  36874kN, tb=91627
>6.Kg3 Ra8 7.Kf2 Kd5 8.Ke3 Kc5 9.Kxe4
>  =  (0.00)   Depth: 23/36   00:01:44  62221kN, tb=136640
>6.Kg3 Ra8 7.Kf2 Kd5 8.Ke3 Kc5 9.Kxe4
>  =  (0.00)   Depth: 24/35   00:03:00  116443kN, tb=218937


Ke5 is definitely a bad move.  Crafty finds Kc6 in less than one minute.

EPD Kit revision date: 1996.04.21
unable to open book file [e:\crafty\release/books.bin].
hash table memory = 24M bytes.
pawn hash table memory = 6M bytes.
EGTB cache memory = 2M bytes.
draw score set to    0.00 pawns.
choose from book moves randomly (using weights.)
choose from 5 best moves.
book learning enabled
result learning enabled
position learning enabled
threshold set to 9 pawns.
5 piece tablebase files found
19045kb of RAM used for TB indices and decompression tables

Crafty v18.13

White(1): post
White(1): st 999
search time set to 999.00.
White(1): epdpfga \what.epd what.out
PFGA: EPD record: 1
end-game phase
              clearing hash tables
              time surplus   0.00  time limit 16:39 (16:39)
         nss  depth   time  score   variation (1)
                9->   4.22  -3.75   1. ... Ke5 2. Kg3 Kf5 3. Kf2 Kf4 4.
                                    Ke2 Ra6 5. Kf2 Ra7
         9   -375     422 168833  1. ... Ke5 2. Kg3 Kf5 3. Kf2 Kf4 4. Ke2 Ra6 5.
 Kf2 Ra7
               10     4.79  -3.65   1. ... Ke5 2. Kg3 Kf5 3. Kf2 Kf4 4.
                                    Ke2 Ra6 5. Kf2 Ra8 6. Ke2
        10   -365     479 228117  1. ... Ke5 2. Kg3 Kf5 3. Kf2 Kf4 4. Ke2 Ra6 5.
 Kf2 Ra8 6. Ke2
               10->   6.11  -3.65   1. ... Ke5 2. Kg3 Kf5 3. Kf2 Kf4 4.
                                    Ke2 Ra6 5. Kf2 Ra8 6. Ke2
        10   -365     611 284567  1. ... Ke5 2. Kg3 Kf5 3. Kf2 Kf4 4. Ke2 Ra6 5.
 Kf2 Ra8 6. Ke2
               11     7.44  -3.67   1. ... Ke5 2. Kg3 Kf5 3. Kf2 Kf4 4.
                                    Ke2 Ra6 5. Kf2 Ra8 6. Ke2 Ra6
        11   -367     744 372963  1. ... Ke5 2. Kg3 Kf5 3. Kf2 Kf4 4. Ke2 Ra6 5.
 Kf2 Ra8 6. Ke2 Ra6
               11->  10.96  -3.67   1. ... Ke5 2. Kg3 Kf5 3. Kf2 Kf4 4.
                                    Ke2 Ra6 5. Kf2 Ra8 6. Ke2 Ra6
        11   -367    1096 634820  1. ... Ke5 2. Kg3 Kf5 3. Kf2 Kf4 4. Ke2 Ra6 5.
 Kf2 Ra8 6. Ke2 Ra6
               12    12.19  -3.64   1. ... Ke5 2. Kg3 Kf5 3. Kf2 Kf4 4.
                                    Ke2 Ra6 5. Kf2 Ra8 6. Ke2 Ra7 7. Rd4
        12   -364    1219 832176  1. ... Ke5 2. Kg3 Kf5 3. Kf2 Kf4 4. Ke2 Ra6 5.
 Kf2 Ra8 6. Ke2 Ra7 7. Rd4
               12->  13.36  -3.64   1. ... Ke5 2. Kg3 Kf5 3. Kf2 Kf4 4.
                                    Ke2 Ra6 5. Kf2 Ra8 6. Ke2 Ra7 7. Rd4
        12   -364    1336 947920  1. ... Ke5 2. Kg3 Kf5 3. Kf2 Kf4 4. Ke2 Ra6 5.
 Kf2 Ra8 6. Ke2 Ra7 7. Rd4
               13    18.05  -3.75   1. ... Ke5 2. Kg3 Kf5 3. Kf2 Kf4 4.
                                    Ke2 Ra6 5. Kf2 Ra8 6. Ke2 Ra7 7. Kf2
                                    Ra6
        13   -375    1805 1632973  1. ... Ke5 2. Kg3 Kf5 3. Kf2 Kf4 4. Ke2 Ra6 5
. Kf2 Ra8 6. Ke2 Ra7 7. Kf2 Ra6
               13->  21.89  -3.75   1. ... Ke5 2. Kg3 Kf5 3. Kf2 Kf4 4.
                                    Ke2 Ra6 5. Kf2 Ra8 6. Ke2 Ra7 7. Kf2
                                    Ra6
        13   -375    2189 2268964  1. ... Ke5 2. Kg3 Kf5 3. Kf2 Kf4 4. Ke2 Ra6 5
. Kf2 Ra8 6. Ke2 Ra7 7. Kf2 Ra6
               14    25.15     --   1. ... Ke5
               14    28.69  -1.53   1. ... Ke5 2. Kg3 Kf5 3. Kf2 Kf4 4.
                                    Ke2 Ra6 5. Kf2 Ra8 6. Ke2 Kf5 7. Ke3
                                    Re8 8. Rxa5+ Kg4
        14   -153    2869 3025743  1. ... Ke5 2. Kg3 Kf5 3. Kf2 Kf4 4. Ke2 Ra6 5
. Kf2 Ra8 6. Ke2 Kf5 7. Ke3 Re8 8. Rxa5+ Kg4
               14    54.27  -3.70   1. ... Kc6 2. Kf4 Kb5 3. Ra1 a4 4.
                                    Rb1+ Kc4 5. Rc1+ Kb3 6. Rb1+ Kc2 7.
                                    Ra1 Kc3 8. Ke3 a3 9. Kxe4 Kb3
        14   -370    5427 9130199  1. ... Kc6 2. Kf4 Kb5 3. Ra1 a4 4. Rb1+ Kc4 5
. Rc1+ Kb3 6. Rb1+ Kc2 7. Ra1 Kc3 8. Ke3 a3 9. Kxe4 Kb3
               14->  55.65  -3.70   1. ... Kc6 2. Kf4 Kb5 3. Ra1 a4 4.
                                    Rb1+ Kc4 5. Rc1+ Kb3 6. Rb1+ Kc2 7.
                                    Ra1 Kc3 8. Ke3 a3 9. Kxe4 Kb3
        14   -370    5565 9595256  1. ... Kc6 2. Kf4 Kb5 3. Ra1 a4 4. Rb1+ Kc4 5
. Rc1+ Kb3 6. Rb1+ Kc2 7. Ra1 Kc3 8. Ke3 a3 9. Kxe4 Kb3
               15     1:27     ++   1. ... Kc6!!
        15   -410    8720 18712656  1. ... Kc6!!
               15     2:39  -5.14   1. ... Kc6 2. Kf4 Kb5 3. Rd4 e3 4.
                                    Rd1 e2 5. Re1 a4 6. Ke3 Re7+ <HT>
        15   -514   15978 51577427  1. ... Kc6 2. Kf4 Kb5 3. Rd4 e3 4. Rd1 e2 5.
 Re1 a4 6. Ke3 Re7+ <HT>
               15->   3:01  -5.14   1. ... Kc6 2. Kf4 Kb5 3. Rd4 e3 4.
                                    Rd1 e2 5. Re1 a4 6. Ke3 Re7+ <HT>
        15   -514   18107 59856292  1. ... Kc6 2. Kf4 Kb5 3. Rd4 e3 4. Rd1 e2 5.
 Re1 a4 6. Ke3 Re7+ <HT>
               16     4:00  -5.27   1. ... Kc6 2. Kf4 Kb5 3. Ra1 a4 4.
                                    Ke3 a3 5. Kd4 e3 6. Rb1+ Kc6 7. Rc1+
                                    Kd6 8. Kd3 a2 9. Ra1 Ra3+ 10. Ke2 Kd5
                                    11. Kf3
        16   -527   24021 88694816  1. ... Kc6 2. Kf4 Kb5 3. Ra1 a4 4. Ke3 a3 5.
 Kd4 e3 6. Rb1+ Kc6 7. Rc1+ Kd6 8. Kd3 a2 9. Ra1 Ra3+ 10. Ke2 Kd5 11. Kf3
               16->   5:02  -5.27   1. ... Kc6 2. Kf4 Kb5 3. Ra1 a4 4.
                                    Ke3 a3 5. Kd4 e3 6. Rb1+ Kc6 7. Rc1+
                                    Kd6 8. Kd3 a2 9. Ra1 Ra3+ 10. Ke2 Kd5
                                    11. Kf3
        16   -527   30236 115173872  1. ... Kc6 2. Kf4 Kb5 3. Ra1 a4 4. Ke3 a3 5
. Kd4 e3 6. Rb1+ Kc6 7. Rc1+ Kd6 8. Kd3 a2 9. Ra1 Ra3+ 10. Ke2 Kd5 11. Kf3
               17     5:02   1/15*  1. ... Kc6



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