Chess on a Palm??

Are there any good programs for the Palm? How much are they?

http://perso.orange.fr/ct_chess/index.html
http://www.hiarcs.com/
http://www.chessgenius.com/

This guy compares all three:

http://www.elhchess.demon.co.uk/palmchss.htm

Here's some more:

http://www.whitehorsegames.com/chess/
http://dqsoft.com/palmchess.html

I think the best are about 2500ELO(pocket pc)

Thank you, friends! Usefull info!