Items Invented by Arnaldo Rodrigues D'Almeida
- Hexagonal Round Chess. Combined Byzantine Chess with Rex Chess. (9x9, Cells: 81) By Arnaldo Rodrigues D'Almeida.
- Rex . Six Direction Chess. By Arnaldo Rodrigues D'Almeida.
- REX Hexagonal Chess. Six Direction Chess. (Cells: 85) By Arnaldo Rodrigues D'Almeida.
- Xadrez Rex. Brazilian hexagonal chess. Author: Ed Friedlander. Inventor: Arnaldo Rodrigues D'Almeida.