A new version of Zappa Mexico called Zappa Mexico II is now available on shredderchess.com. Anthony Cozzie has managed to further improve the playing strength of his world class chess engine that was computer chess world champion in 2005.

This is a free update for all customers of Zappa Mexico. Simply download the program again via the download link in your order confirmation email to get the latest version. The download counts for all customers are reset.