Inventors Starting with Y
- Peter Yapsan [info]
Yapsan's Spherical Chess. Play this early adaptation of Chess to a spherical board on Game Courier.
- Oyama Yasuharu [info]
Five-Minute Poppy Shogi. Small shogi variant on a 4 by 5 board. (4x5, Cells: 20) 
Microshogi 
. Small shogi variant on a 4 by 5 board.
- Kumar Yelubandi [info] Chassyrinth. A 'color-attribute' based hexagonal chess variant.
- HaruN Y [info]
Alibabante Chess II. 
Game with Alibabantes. (10x10, Cells: 100) Antimage Chess. Some pieces can rifle capture, but there's Antimage from Chess Evolved Online that immune to rifle capture. (8x8, Cells: 64) Camelopard Chess. Game with Camelopards. (12x12, Cells: 144) , more...
- Ted Yudacufski [info] Darts chess. Darts are thrown to decide with which piece to move.
- Ilya Yudovski [info] Fluky Chess. Fast-paced mini-chess variant with dice. (5x5, Cells: 25) Nostromo. As Ripley, save astronauts from the Alien. (8x8, Cells: 64)
- A. S. Yurgelevich [info] Chess-Battle. War variant from the Soviet-Union, 1933. (12x12, Cells: 128)
- A. S. Yurgelevich [info] Chess Battle . Military-themed Chess variant on a large board, invented in the Soviet Union in 1933.