Games Invented by Ralph Betza programmed as Java scripts
- Almost Chess. The queen may move as a knight or rook but not as a bishop. Author: Ed Friedlander. Inventor: Ralph Betza.
- Avalanche Chess. Advance the opponent's pawns. Popular variant. Author: Ed Friedlander. Inventor: Ralph Betza.
- Avalanche Chess 2. As before, except that the red king and queen are switched. Author: Ed Friedlander. Inventor: Ralph Betza.
- Conversion Chess. I chose this one to represent the entire family of co-chess. Author: Ed Friedlander. Inventor: Ralph Betza.
- Echo Chess I. If possible, make a second move with a matching unit. Author: Ed Friedlander. Inventor: Ralph Betza.
- Incognito Chess. In addition to the King, one Pawn is secretly royal. Author: Ed Friedlander. Inventor: Ralph Betza.
- Iron Knight. Non-capturable knight. Author: Ed Friedlander. Inventor: Ralph Betza.
- Pixelpusher variant: Almost chess. Missing description Author: Hans L. Bodlaender. Inventor: Ralph Betza.
- Swarm Chess. Each of your units must move each turn if possible. Author: Ed Friedlander. Inventor: Ralph Betza.
- Tutti Frutti Chess. Eight different pieces. Author: Ed Friedlander. Inventor: Ralph Betza.