programmer22, its "shift". Nice game, but here's a couple of pointers: (1) You should probably make the images transparent - to do this, use an image editing program. If you don't know any, tell me and I can recommend some. (2) Charmander's attacks only go left, no matter which direction he's facing in - you might want to change this so that if he's facing right they go right, and left if facing left. Also, this comment has given me the idea to create a method that will make an image have a transparent background, so if you can't find an image editing program, you might want to use mine :)

On the menu, if you click 'show board notation' more than once, rather than toggling it on and off, it keeps applying it. Other than that, very nice :) Reminds me that I need to fix my draughts game (which looks quite similar) because I got the rules of draughts wrong when I made it (having not played the game in ages)