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Article #4858

Strange Moves

#4858
From: Kevin Maguire
Date: Wed, 07 Sep 1994 06:53
54 lines
2805 bytes
I reached the following position:

1r3rk1/p1p2p2/3p2p1/2pP2Np/q7/1P2Q1P1/1K2BP1P/R6R b KQkq - 0 31

in a game started with the command

xboard -st 0:30 -autosave -debug -initString "new^Mbeep^Mpost^M"

and the machine played g8g7, ie gave up the queen!!  I don't understand
how this could happen, I was quite enjoyinmg what had been a relatively
even game (I think) The debug output for that move was: I had just played
R-a1

----->>>-------
Sending to first: d1a1
Received from first: d1a1
Received from first: 45. d1a1
Received from first: 
Received from first: Move# 31    Target= 3000    Clock: 0
Received from first:  2.   -448    0        2   a4d4 
Received from first:  3.   -448    0        3   a4d4 
Received from first:  4&   -488    1    11824   a4d4  e3d4  c5d4  b2a2  
f8e8  e2d3 
Received from first:  4+   -351   13   124612   a4b4  b2c1  f8e8  a1a7  
e8e3 
Received from first:  4-   -363   14   136018   a4b4  a1a7  f8e8  e3d3  
b8b7 
Received from first:  4-   -361   14   136781   g8g7  a1a4  f8d8  e2h5 
Received from first:  4-   -361   14   139214   c5c4  a1a4  g8g7  e2h5 
Received from first:  4.   -361   15   141511   c5c4  a1a4  g8g7  e2h5 
Received from first:  5-   -555   15   142970   c5c4  a1a4  b8b7  e2h5  
b7b3  e3b3 
Received from first:  5-   -553   15   144253   g8g7  a1a4  c5c4  e2h5 
Received from first:  5.   -361   30   286324   g8g7  a1a4  c5c4  e2h5 
Received from first: 37. ... g8g7
Received from first: Gen 1157308 Node 286324 Tree 885 Eval 19699 Rate 
9544 EC 12620/6063 RS hi 1 lo 1 
Received from first: Hin/Hout/Tcol/Coll/Fin/Fout = 10529/4451/0/0/0/0
Received from first: My move is: g8g7
----->>>-------

Is this just the standard I should expect at 30 secs per move ??  Surely
not.  The rest of the time it plays really well, have I done something (or
not done something) critical.  What do the numbers before the moves on
the debug output signify, and are there any clues as to what happeneed in
them ?? 

Much obliged
Kevin

PS I am running, with xboard on a Solaris 2.3 Sun SPARC 5!

7:52 ~/bin [2] gnuchess -v
Gnuchess version 4.00 patchlevel 70
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From: kmaguire@main (Kevin Maguire)
Newsgroups: gnu.chess
Subject: Strange Moves
Date: 7 Sep 1994 06:53:25 GMT
Organization: University of Stirling
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