1828rule
חברות מועדון זהב

1828 Rule, Often considered the founding premise of modern chess play,   (named after the year of its invention) states that players shall make their moves in turns, rather than simultaneously.

מועדונים
Team  USA
Team USA 3,615 חברי מועדון
Team Minnesota
Team Minnesota 689 חברי מועדון
The Tao of Chess
The Tao of Chess 11 חברי מועדון
Adults only group
Adults only group 97 חברי מועדון