Find out why
Visual guide to ECO codes
Explore the encyclopedia of chess openings using our visual guide. We've made it easier to find ECO codes and relate them directly to the most popular openings.
Explore ECO codes
Chess apps for Windows 8, iPhone and iPad
Go to the chess apps
Get the openings videos and interactive openings book for your iPhone and iPad
Enjoy over 80 minutes of lessons and carefully designed memorization exercises with our new app!
Check out Carlsbad App