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Subject: Gothic Vortex, New Search Speeds (for Michel)

Author: Ed Trice

Date: 23:52:10 01/21/04


I would like to thank Michel for taking the time to publish his win against the
previous version of Gothic Vortex. At first, I was dismissive of this result
since it was played on a slower machine (800 MHz P3) and at fast time controls
(10 seconds per move), but now I can see the value in playing with such
controls.

Playing at longer controls would have hidden flaws in some of the Vortex
evaluation function routines. But now, thankfully, some of the incorrect
assesments have been improved.

Here are the times it takes Vortex to reach a fixed depth from the opening
position. I used 1 GB of hash tables for the search on my 2.8 GHz Pentium 4.

Vortex New Piece Values 1/21/2004
Version 1.0.3

Time to fixed depth from the opening

 8 -  0:03 - d4 g6 Nc3 Nh6 Bg5 Ni4 Bf4 Bf6
 9 -  0:10 - d3 Nh6 Nc3 g6 Af3 Nc6 Nh3 Bd4 Bg5
10 -  0:34 - d4 g6 Nc3 Nh6 Nh3 Nc6 d5 Nd4 Be3 Af6
11 -  1:02 - d4 g6 Nc3 Nh6 Nh3 d6 Bf4 Be6 Af3 Nc6
12 -  5:18 - d4 g6 Nh3 Nh6 g3 Nc6 d5 Ne5 Nc3 d6 Bg5 Bg4
13 -  9:08 - d4 g6 Nh3 Nh6 Nc3 Nc6 d5 Nd4 e3 Nf5 e4 Bxc3 bxc3
14 - 50:47 - g3 g6 Bf3 Nc6 Nh3 Nh6 d3 Ne5 Bd5 c6 Bb3 d5 Bg5 Bg4

Vortex "Draw  Contempt" Code in place
Version 1.0.2

Time to fixed depth from the opening

 8 -  0:03 - d4 g6 Nc3 Nh6 Bg5 Ni4 Bf4 Bf6
 9 -  0:10 - d3 Nh6 Nc3 g6 Af3 Nc6 Nh3 Bd4 Bg5
10 -  0:36 - d3 Nh6 Nc3 g6 Af3 Nc6 Bf4 Bd4 Nb5 Bxd2 Nxc7
11 -  2:13 - d4 Nc6 Nh3 d6 Nc3 Nh6 g3 Bg4 Ni5 Bf5 Bd5
12 -  6:49 - d4 Nc6 Nh3 Nh6 d5 Ne5 Nc3 d6 Qd4 Nf5 Qe4 Bd7
13 - 13:31 - d4 Nc6 Nh3 Nh6 d5 Ne5 g3 d6 Be4 Bg4 Bg5 Ni4 Be3
14 - 65:40 - g3 g6 Nh3 Nh6 Nc3 Nc6 d3 Bd4 Bf3 Ne5 Be4 f5 Nb5 Af6 Nxd4 fxe4 dxe4
Axe4

Vortex "Draw = 0" in Evaluation Function
Version 1.0.1

Time to fixed depth from the opening

 8 -  0:03 - d4 g6 Nc3 Nh6 Bg5 Ni4 Bf4 Bf6
 9 -  0:10 - d3 Nh6 Nc3 g6 Af3 Nc6 Nh3 Bd4 Bg5
10 -  0:37 - d3 Nh6 Nc3 g6 Af3 Nc6 Bf4 Bd4 Nb5 Bxd2 Nxc7
11 -  2:15 - d4 Nc6 Nh3 d6 Nc3 Nh6 g3 Bg4 Ni5 Bf5 Bd5
12 -  6:57 - d4 Nc6 Nh3 Nh6 d5 Ne5 Nc3 d6 Qd4 Nf5 Qe4 Bd7
13 - 13:08 - d4 Nc6 Nh3 Nh6 d5 Ne5 g3 d6 Be4 Bg4 Bg5 Ni4 Be3
14 - 65:09 - g3 g6 Nc3 Nh6 Nh3 Nc6 d3 Bd4 Bf3 Ne5 Be4 f5 Nb5 Af6 Nxd4 fxe4 dxe4
Axe4



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