Yesterday's XKCD cartoon is about chess; some of you might like it.

http://www.xkcd.com/c232.html


Dave.

--
David Richerby Frozen Disposable Puzzle (TM): it's
www.chiark.greenend.org.uk/~davidr/ like an intriguing conundrum but you
never have to clean it and it's frozen
in a block of ice!