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Subject: Re: Testposition endgame

Author: Richard Pijl

Date: 16:01:20 05/09/05

Go up one level in this thread


On May 09, 2005 at 18:20:45, Eduard Nemeth wrote:

>Composition by Eduard Nemeth:
>
>[D]Rnk1b3/Rp1r4/1Pp1p1p1/K1Pp1p1p/3P1P1P/4P1P1/4B3/8 w - - 0 1
>
>White wins.
>
>Which program can find the winning move?

The Baron finds Rxb7 in 5 minutes on an AMD MP2000+ (single CPU version):

 17(37).   3:19.30  61637198   +4.53  Ka5-b4 Rd7-h7 Be2-d3 Rh7-g7 Kb4-c3
                                      Be8-f7 Kc3-b3 Bf7-e8 Kb3-b4 Rg7-e7 Ra7-a1
                                      Re7-h7 Kb4-c3 Rh7-e7 Ra8-a3 Nb8-d7 Ra3-a7
                                      (Nd7-b8)
 18(35)&   4:43.06  87981549   +4.52  Ka5-b4 Rd7-h7 Be2-d3 Rh7-g7 Kb4-c3
                                      Be8-f7 Kc3-b3 Bf7-e8 Kb3-b4 Rg7-e7 Ra7-a1
                                      Re7-h7 Ra8-a3 Be8-f7 Ra3-a7 Rh7-h8 Kb4-c3
                                      Nb8-d7
 18(35)&   5:06.33  94973222   +4.79  Ra7xb7 Rd7xb7 Be2-f1 Be8-d7 Bf1-a6
                                      (e6-e5) (f4xe5) (f5-f4) (g3xf4) (Bd7-f5)
(e3-e4)
                                      (Bf5-e6) (Ba6xb7) (Kc8xb7) (Ra8-a7)
 18(35).   6:30.89 117551521   +4.79  Ra7xb7 Rd7xb7 Be2-f1 Be8-d7 Bf1-a6
                                      (e6-e5) (f4xe5) (f5-f4) (g3xf4) (Bd7-f5)
(e3-e4)
                                      (Bf5-e6) (Ba6xb7) (Kc8xb7) (Ra8-a7)
 19(35)+   7:03.42 127151006   +5.14  Ra7xb7 (Rd7xb7) (Be2-f1) (Be8-d7) (Bf1-a6)
                                      (e6-e5) (f4xe5) (f5-f4) (g3xf4) (Bd7-f5)
(e3-e4)
                                      (Bf5-e6) (Ba6xb7) (Kc8xb7) (Ra8-a7)
 19(37).   7:58.67 143943151   +6.39  Ra7xb7 (Rd7xb7) (Be2-f1) (Be8-d7) (Bf1-a6)
                                      (e6-e5) (f4xe5) (f5-f4) (g3xf4) (Bd7-f5)
(e3-e4)
                                      (Bf5-e6) (Ba6xb7) (Kc8xb7) (Ra8-a7)
 20(37)+  10:52.50 194655491   +6.74  Ra7xb7 (Rd7xb7) (Be2-f1) (Be8-d7) (Bf1-a6)
                                      (e6-e5) (f4xe5) (f5-f4) (g3xf4) (Bd7-f5)
(Ba6xb7)
                                      (Kc8xb7) (Ra8-a7) (Kb7-c8)
 20(41)&  16:25.23 291412845   +7.17  Ra7xb7 Rd7xb7 Be2-f1 Be8-d7 Bf1-a6
                                      Bd7-e8 Ra8-a7 Nb8xa6 Ka5xa6 Rb7-b8 Ra7-c7
                                      Kc8-d8 Ka6-a7 Rb8-c8 Rc7xc8 Kd8xc8 b6-b7
                                      Kc8-d8 b7-b8Q Kd8-e7 Ka7-b6 Ke7-f7 Qb8-b7
                                      Kf7-f6 Qb7-a7
>
>Have fun,
>Eduard
>
>My World:
>
>http://www.beepworld.de/members37/computerschach/



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