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Subject: Re: A little Engame R+p vs. R+p

Author: Dann Corbit

Date: 15:34:41 12/18/01

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On December 18, 2001 at 13:51:28, Eduard Nemeth wrote:

>What says your program (with TBs too) !!
>
>[D]4K3/4P3/rp6/7R/2k5/8/8/8 w - - 0 1
>
>(Draw)

Took me a long time to realize that Kf7 does not win.  Phalanx has a hard time
with it, which made me feel better [;-)]:

4K3/4P3/rp6/7R/2k5/8/8/8 w - -
    -> increment adds 1440 s to soft time limit
    -> soft time limit 3154.28 s
    -> hard time limit 41599.9 s
  6    417    50    34601  Rh5-h4  !
  6    430    60    45485  Rh5-h4  Kc4-c3  Ke8-f8  Ra6-a8  Pe7-e8Q  Ra8xe8
                           Kf8xe8  Pb6-b5  Ke8-d7
  6    432    98    76424  Rh5-h6  Ra6-a8  Ke8-f7  Ra8-a7  Kf7-f8  Ra7xe7
                           Rh6-h4  Re7-e4  Rh4xe4  Kc4-c5
  6 ->   0:01.05    80485   2 turns
  7    448   158   142637  Rh5-h6  Kc4-c5  Rh6-e6  Ra6-a7  Ke8-f8  Ra7xe7
                           Re6xe7  Pb6-b5  Re7-b7
  7    452   212   211066  Rh5-e5  Ra6-a8  Ke8-f7
  7    457   219   220613  Ke8-f7  !
  7    461   228   235850  Ke8-f7  Ra6-a7  Rh5-e5  Ra7xe7  Re5xe7
  7 ->   0:02.45   260556   2 turns
  8    434   282   325635  Ke8-f7  Ra6-a7  Rh5-e5  Pb6-b5  Kf7-f6  Ra7-a8
                           Re5-e4
  8    435   328   398411  Rh5-e5  Ra6-a7  Ke8-f8
  8    440   377   488329  Rh5-h4  !
  8    440   407   546554  Rh5-h4  Kc4-c3
  8 ->   0:04.50   634150   2 turns
  9    437   592   919453  Rh5-h4  Kc4-c3  Rh4-h6  Ra6-a8
  9    442   748  1231250  Rh5-h6  !
  9    442   784  1304299  Rh5-h6  Ra6-a8
  9 ->   0:09.02  1546818   1 turn
 10    437  1203  2164054  Rh5-h6  Kc4-c5  Rh6-e6  Ra6-a8
 10    440  1404  2603478  Rh5-h4  Kc4-c3  Ke8-f8  Ra6-a8
 10    441  1864  3622950  Ke8-d7  Ra6-a7  Kd7-d6  Ra7xe7
 10 ->   0:18.97  3695494   2 turns
 11    441  2910  6016798  Ke8-d7  Ra6-a8  Rh5-e5  Pb6-b5
 11    445  3344  6995914  Rh5-h6  Ra6-a8  Ke8-d7
 11 ->   0:45.01  9575259   1 turn
 12    442  5084 10911484  Rh5-h6  Ra6-a8  Ke8-d7  Pb6-b5  Rh6-c6  Kc4-d3
                           Rc6-c8  Ra8-a7  Rc8-c7  Ra7-a8  Pe7-e8Q  Ra8xe8
 12 ->   1:25.57 18794794   0 turns
 13    424 10700 23749890  Rh5-h6  Ra6-a8  Ke8-d7  Ra8-a7  Kd7-d6  Ra7xe7
                           Kd6xe7  Pb6-b5  Rh6-c6  Kc4-b3  Ke7-e6  Pb5-b4
                           Ke6-d5  Kb3-a3
 13    429 16328 36886323  Rh5-h4  !
 13    440 19083 43173148  Rh5-h4  Kc4-c5  Ke8-f8
 13 ->   4:01.43 55077201   1 turn
 14    433 28536 65120992  Rh5-h4  Kc4-c5  Ke8-f8  Ra6-a8  Kf8-g7  Pb6-b5
                           Rh4-h8  Ra8-a7  Kg7-f6  Ra7xe7  Kf6xe7  Pb5-b4
                           Rh8-b8  Kc5-c4  Ke7-f6  Pb4-b3  Kf6-f5
 14 ->   7:39.80 106380328   0 turns
 15    418 59159 137919118  Rh5-h4  Kc4-c5  Ke8-d7  Ra6-a7
 15 ->  17:04.46 242283548   0 turns
 16    404 129935 306505454  Rh5-h4  Kc4-c5  Ke8-d7  Ra6-a7  Kd7-e6  Ra7xe7
                           Ke6xe7  Pb6-b5  Rh4-h5  Kc5-c4  Ke7-d6  Pb5-b4
                           Rh5-h4  Kc4-c3  Kd6-d5  Pb4-b3  Rh4-c4  Kc3-d3
                           Kd5-c5  Pb3-b2  Rc4-b4



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