Items Invented by Max Koval
Accelerated Chess. 
Accelerating chess with a new board. (10x8, Cells: 80) By Max Koval.
- Koval's Hexagonal Chess. A new way to play chess on hexagonal cells. By Max Koval.
- Threehex. Hexagonal variant for three players. By Max Koval.
- Ultimate Hexagonal Chess. Hexagonal chess that has no equal. By Max Koval.
Koval's Hexagonal Chess. Game Courier Preset to play Koval's Hexagonal Chess. By Max Koval.