Computer Resources

Ish provided a welcome list of computer programmes that he has found useful:

free copy of Rybka 2 : http://www.rybkachess.com/index.php?auswahl=Demo+version

free version of Fritz 5: http://freechess.50webs.com/fritz.html
And Winboard: http://ftp.gnu.org/gnu/winboard/winboard-4_2_7b.exe

Simon Waters also likes SCID (http://scid.sourceforge.net/) although the current maintainer is in a deeply unlovely dispute (http://chessdb.sourceforge.net/pascal.php) with a fork of SCID which is ChessBD (http://chessdb.sourceforge.net/), which suggests to me that you might be better off with ChessBD.

Jonathan Morgan also recommends for opening training:

the software i mentioned is chess position trainer and can be downloaded at:

http://www.chesspositiontrainer.com/.

help section and the videos that they have on the site (and free sample repertoires -- DR).
Any more?  Eric Bentzen has a list: http://www.enpassant.dk/chess/softeng.htm
Once I've got a top ten I can offer some notes.

Chess Quotes

"It's always better to sacrifice your opponent's men."
— -- TARTAKOVER