Items Invented by Derick Peterson
- Cobra Chess. Variant on 10 by 10 board with new pieces, including the Cobra. (10x10, Cells: 100) By Derick Peterson.
- Grand Hexachess. Large hexagonal chess variant. (Cells: 127) By Derick Peterson.
- Multiplayer chess variants. Additional rules for chess variants with more players. By Derick Peterson.
- Peterson's 3-d Space Chess. Improved rules for Space chess. (3x(8x8), Cells: 192) By Derick Peterson.
- Cobra Chess. Link featuring piece that occupies four squares at once, the cobra, moves like a rook but can leap over friendly pieces. Author: Jeremy Gabriel Good. Inventor: Derick Peterson.
- Cobra Chess . Variant on 10 by 10 board with new pieces, including the Cobra. Author: Antoine Fourrière. Inventor: Derick Peterson.