
Name: 		SOS.5 for Arena
Programmer:	Rudolf Huber
Country:	Germany
Version:	5
ELO:		Around 2.600
Playing Styl:	Strategy, positional


"SOS is an amateur program which was started in 1993 and has since
then competed in a number of tournaments. The newest version runs on
multiprocessor systems with a parallelized version of mtd(f) as its
minimax search algorithm. SOS used to be a realativley fast searcher
and relied on outsearching the opponent. This has changed now and more
knowledge and special cases have been implemented which slow it down.
Little effort is spent on the opening book. It plays a very broad range
of openings. However it learns to avoid unsuccessful lines and tries not
to repeat lost games. It uses publictly available endgame databases."

Since version 5.0 SOS supported MV (multi-variant) mode!


Protocol: UCI

Opening book:
On Arena webpage you can find a special opening book for SOS by
Salvatore Spitaleri (Italy).
Please look under "User Files" selection!


SOS for Arena supported:
Nalimov tablebases (endgame databases):
http://www.playwitharena.com/download/4-pieces-tbs.zip
(three and four pieces = 31.05Mb)


Offical results:
----------------

1993, 12th WMCCC Munich 4/9 points,			 ranking 20 of 28 
1994, Single Plattform London 17.5/29 points,		 ranking  7 of 16 
1994, 4th IPCCC Paderborn 5/7 points,			 ranking  2 of 18 
1995, 8th WCCC HongKong 2/5 points,			 ranking 15 of 24 
1997, 6th IPCCC Paderborn 4.5/7 points,			 ranking  4 of 16 
1997, 15th WMCCC Paris 5/11 points,			 ranking 26 of 34 
1998, 5th Spain-ch Granada 3/5 points	,		 ranking  3 of 12 
1998, 7th IPCCC Paderborn 3/7 points,			 ranking 11 of 16 
1999, 8th IPCCC Paderborn 4/7 points,			 ranking  7 of 14 
1999, 9th WCCC, 16th WMCCC Paderborn 2.5/7 points,	 ranking 24 of 30 
2000, 17th WMCCC London, Amateur Champion 5.5/9 points,	 ranking  6 of 14
 
2000, 9th IPCCC Paderborn 3.5/7 points, 		 ranking  7 of 16 
2001, CCT-3 Internet 5.5/8 points, 			 ranking  6 of 32 
2001, 1st Int. CSVN tournament 5/9 points, 		 ranking  8 of 19 
2001, 18th WMCCC Maastricht 5/9 points, 		 ranking 11 of 18 
2001, 10th IPCCC Paderborn 5/9 points,			 ranking  5 of 18 
2002, 11th IPCCC Paderborn 3.5/7 points, 		 ranking  9 of 16 
2002, 2nd Int. CSVN tournament 5.5/9 points,		 ranking  5 of 22 
2002, 10th WCCC Maastricht 4.5/9 points, 		 ranking  9 of 18 
2003, 12th IPCCC Paderborn 4.5/7 points, 		 ranking  4 of 14 
2003, 18th WMCCC Graz 5/11 points, 			 ranking  8 of 15 
2004, 13th IPCCC Paderborn 3.0/7 points, 		 ranking 12 of 16 
2004, 12th WCCC Bar Ilan 6.0/11 points, 		 ranking  7 of 14
2005, CCT-7 Internet 6.5/9 points,                       ranking  4 of 44


Schweich-Issel, Germany
21.02.2005, Frank Quisinsky