Starts with the letter 'r'
- Raumschach. "... (German for Space Chess) is one of the first three-dimensional chess variants and the first to survive until present". Author: Jeremy Gabriel Good. Inventor: Dr. Ferdinand Maack.
- Raumschach (rules enforcing). Play Raumschach on Game Courier, with rules enforced. Author: Ben M Reiniger. Inventor: Dr. Ferdinand Maack.
- Romanchenko's Chess. FIDE Chess trainer Romanchenko shifted the FIDE board in the middle to help his students think for themselves. Author: Jeremy Gabriel Good and Fergus Duniho. Inventor: V. Romanchenko.
|3 'Play by mail item' entries listed||2 'Three dimensional' entries listed|
|3 'From ancient times' entries listed|
Total items listed: 3