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Subject: Re: Is Fruit 2.2 weakened by additional security code?

Author: Andreas Guettinger

Date: 11:52:42 10/11/05

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On October 11, 2005 at 06:23:42, Andreas Guettinger wrote:

>Ok, I will check the position this evening when I'm back at home.
>But if the difference is due to pruning it could be highly position dependent.
>
>regards
>Andy

Here my numbers. Probably the IBM compiled fruit_21_static has 10% speed
advantage above the gcc version.
Your win version is around that faster than the current linux version, too.

Fruit 2.2 (fruit22_linux)

 1 +0.34  Nc3 (0.00)
 1 +0.01  f6 (0.00)
 2 +0.20  f6 g6 (0.01)
 3 -0.10  f6 g6 Rb6 Rxa3 (0.02)
 3 +0.12  Qh4 f6 Qxd4 fxe5 (0.03)
 4 -0.11  Qh4 Rd7 Qxd4 Bxg2 (0.04)
 4 -0.10  f6 g6 Rb6 Rxa3 (0.06)
 5 -0.27  f6 g6 Nb1 Rc5 Rxc5 Qxb2 Rxa5 (0.09)
 5 -0.15  Qh4 Rd7 Be4 Bxe4 Nxe4 Rxa3 (0.12)
 5 -0.07  Nb1 Rc7 Qh4 f6 exf6 (0.17)
 6 +0.00  Nb1 Rcc8 Nd2 Rc3 (0.28)
 7 +0.00  Nb1 Rcc8 Nd2 Rc3 (0.45)
 8 +0.00  Nb1 Rcc8 Nd2 Rc3 (0.86)
 9 -0.04  Nb1 Rc5 Qh4 Rcc8 Nd2 Bc6 R5b3 a4 Rb6 (1.33)
10 +0.00  Nb1 Rcc8 Nd2 Rc3 (2.64)
11 +0.00  Nb1 Rcc8 Nd2 Rc3 (4.42)
12 +0.01  Nb1 Rcc8 Re2 Rb8 Re1 Qc7 f6 g5 Nd2 Kh8 a4 Ne6 (8.37)
13 +0.06  Nb1 Rc6 Re2 Bc4 Bxc4 Qxc4 Reb2 Qf1 f6 Ne6 Nd2 Qf4 fxg7 Qxg3+ Kxg3 Kxg7
Rxa5 (28.15)
14 +0.17  Nb1 Rc7 Re2 Qg5 Rxa5 g6 Qxg5 hxg5 fxg6 Nxg6 Bxg6 fxg6 Rd2 Be4 Rb5 Rc1
Rdb2 (56.84)

Depth:       14      Nodes:  35846K (631 kn/s)
Score:    +0.17      Time:     56.78 seconds
Nb1 Rc7 Re2 Qg5 Rxa5 g6 Qxg5 hxg5 fxg6 Nxg6 Bxg6 fxg6 Rd2 Be4 Rb5 Rc1 Rdb2


Fruit 2.1 (fruit21_static_linux)

 1 +0.26  Na3 (0.00)
 1 -4.56  Rxa5 Qxb2 (0.00)
 1 -3.57  Rb1 Qxd2 (0.00)
 1 -3.45  Rc2 Rxc2 Bxc2 Qxd2 (0.01)
 1 -0.71  Nb1 (0.01)
 1 -0.62  Nf1 Rxa3 (0.02)
 1 -0.23  a4 (0.02)
 1 -0.20  Qh4 (0.03)
 1 +0.19  f6 (0.03)
 2 +0.02  f6 g6 (0.04)
 3 +0.02  f6 g6 a4 (0.05)
 4 -0.28  f6 g6 Rb6 Rxa3 (0.06)
 4 -0.27  Qh4 Rd7 Bf1 Bb7 (0.09)
 4 -0.26  a4 Nd7 f6 g6 (0.11)
 5 -0.19  a4 Nd7 f6 g6 Nf1 (0.18)
 5 +0.05  Nb1 Rcc8 f6 g6 Nd2 (0.27)
 6 -0.06  Nb1 Rcc8 Nd2 Bc6 Rb6 Nd7 (0.37)
 7 +0.00  Nb1 Rcc8 Nd2 Rc3 (0.67)
 8 +0.00  Nb1 Rcc8 Nd2 Rc3 (1.18)
 9 +0.00  Nb1 Rcc8 Nd2 Rc3 (2.04)
10 +0.00  Nb1 Rcc8 Nd2 Rc3 (3.35)
11 +0.00  Nb1 Rcc8 Nd2 Rc3 (5.88)
12 +0.00  Nb1 Rcc8 Nd2 Rc3 (11.46)
13 +0.15  Nb1 Rcc8 Re2 Qc7 Nd2 Rb8 Rxb8 Rxb8 Be4 Bxe4 Nxe4 d3 Qxd3 Qxe5+ Ng3 Qc5
(30.46)


Depth:       13      Nodes:  27954K (934 kn/s)
Score:    +0.15      Time:     29.94 seconds
Nb1 Rcc8 Re2 Qc7 Nd2 Rb8 Rxb8 Rxb8 Be4 Bxe4 Nxe4 d3 Qxd3 Qxe5+ Ng3 Qc5


regards
Andy



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