GlkChess

GlkChess is not an IF game, but a recreation of Chess playable in Glulxe. Everything works the way you would expect, with even some complicated moves like castling and en passant added in. You play white, and you can see the board from either player's side. There's also eight save slots for your game, an undo button, and a way to restart. Despite my enthusiasm in Chess, I'm not that good at it, so I didn't manage to beat the AI. Still, my game played smoothly and worked well.