Starts with the letter '1'
- 100 Square Chess Variant Contest. Missing description
- 100 Squares for Chess and Damante . Small book describing some decimal variants. By Vernon Rylands Parton.
- 10x10 game with some popular pieces. Missing description (10x10, Cells: 104) By Daniil Frolov.
- 10x10 game with some popular pieces. Missing description By Nick Wolff.
- 10x8 Chess mating problems. 10x Chess mating problems. By Sam Trenholme.
- 10x8 Variants. Missing description By Jose Carrillo.
- 12 Sharp Chess. 4-player versions of 10-or-more-file variants on cross-shaped boards. (12x12, Cells: 108) By Charles Gilman.
- 12 Sharp Chess. Missing description Author: Nick Wolff. Inventor: Charles Gilman.
- 16Chess. Game with 4 royal pieces. By Zhedric Meneses.
Total items listed: 9