The Diagramkit v2 figurines have been created by Peter Wong (http://virtualpieces.net/):
My thanks also to:
- all the engine developers;
- Camillo Toselli, who introduced me to computer chess and supplied a lot of material and contributed with testing and suggestions;
- Mauro Pagani, for his enthusiastic support;
- my father, who explained to me the beauty of chess;
- my wife and my son, for their support and patience.