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Subject: Re: NN not always weaker then BB

Author: Claudio Della Corte

Date: 11:59:14 09/06/02

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On September 06, 2002 at 07:23:15, Yuriy Lyapko wrote:

>Which chess engine will see that Rb1 is winning in this position?
>
>[D] b4bk1/p2p4/p1p1p2p/P1P1Pp1P/3P3p/2N4N/1r3PP1/4R1K1 w - -
>

Esc 2.0 only considers Rb1 after 1 second on an Athlon 1700xp. Wheter it's
winning or not, it's going to understand later in the game... ;)

c 1    51     5       49 Nf4
c 2    62     6      304 Re2 Rxe2
c 3    51    16      771 Re2 Rxe2 Nxe2 Be7
c 4    49    18     2742 Re2 Rxe2 Nxe2 Be7 Nhf4
c 5    44    79    31699 Nf4 Be7 Re2 Rxe2 Ncxe2 Kf7
c 6    46    83    53702 Nf4 Be7 Na4 Rc2 Ng6 Kf7
c 7    23    98   140200 Nf4 Be7 Ng6 Bd8 Ra1 Kf7 Kf1
c 8    34   141   368953 Rb1 Rxb1+ Nxb1 Be7 Nd2 Bb7 Kf1 Bd8 Nc4 Kf7
c 9    34   187   639814 Rb1 Rxb1+ Nxb1 Be7 Nd2 Bb7 Kf1 Kf7 Ke2 Bd8 Nc4
c10    34   345  1570262 Rb1 Rb7 Nf4 Rxb1+ Nxb1 Be7 Na3 Bb7 Nc4 Bg5 Ng6 Kf7 Nd6+
c11    30   600  3126897 Rb1 Rb7 Rxb7 Bxb7 Nd1 Be7 Ne3 Kf7 Nc4 Kf8 Nf4 Kf7 Kf1
Ke8 Ke2
c12    22  1690  9006235 Rb1 Rb7 Rxb7 Bxb7 Nd1 Be7 Ne3 Bd8 Nc4 Bc7 Kf1 Kf7 Ke2
c13    41  2359 12500508 Rb1 Rb7 Rxb7 Bxb7 Nd1 Be7 Ne3 Bd8 Nc4 Bc7 Nf4 Kg7 Ng6
h3
c14    40  4037 20740531 Rb1 Rb7 Rxb7 Bxb7 Nd1 Be7 Ne3 Bd8 Nc4 Bc7 Nf4 Kg7 Ng6
h3 gxh3
c15    58  7946 38100438 Rb1 Rb7 Rxb7 Bxb7 Nd1 Be7 Ne3 Bd8 Nc4 Bc7 Nf4 Kg7 Kf1
Kf7 Nd6+ Bxd6 cxd6 Ke8 Ng6
c16    58 17955 81985837 Rb1 Rb7 Rxb7 Bxb7 Nd1 Be7 Ne3 Bg5 Nc4 Kg7 Nd6 Ba8 Nc4
Bd8 Nf4 Be7 Ng6
c17    87 55192 242158948 Rb1 Rb7 Rxb7 Bxb7 Nd1 Be7 Ne3 Bg5 Nc4 Kg7 Kh2 Ba8 Ng1
Kf8 Kh3 Ke7 Nf3 Bb7

Regards,
Claudio



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