Computer Chess Club Archives

Search

Messages

Subject: Symmetry Position Question

Author: Brian Richardson

Date: 11:57:50 08/14/05

Just wondering if others see this behavior or not.

In the position below, Tinker prefers Qc7 after a bit.

[D]5rk/3b2p/1q1p1p1p/2p1p/1pP1P1P/1P1PQP/r2N2KR/7R/ b  0 1

However, in the "flipped" position (horizontally around a rank axis)
it does not like Qc2 (I think the flip is correct)

[D]7r/R2n2kr/1p1pqp/1Pp1p1p/2P1P/1Q1P1P1P/3B2P/5RK/ w  0 1

When I ran this test with Crafty, and flipping, the moves are also a bit
different, as are the scores for each full ply.

So, I'm wondering if this is an asymmetrical evaluation problem, or search
instability, or no big deal.

Thanks

• Re: Symmetry Position Question Robert Hyatt 12:33:00 08/14/05
  • But Crafty Scores Different ? Re: Symmetry Position Question Brian Richardson 13:08:35 08/14/05
    • Re: But Crafty Scores Different ? Re: Symmetry Position Question Robert Hyatt 15:04:06 08/14/05
• Re: Symmetry Position Question Volker Böhm 12:06:08 08/14/05

This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.