Thanks Steve.
Based on a quick fiddle with the demo ..
[-] Too many warning popups ..
Things like "You can't move there" can be replaced by a sound effect (buzz) and say, do a red outline around the piece showing the move to be illegal.
Same for "No legal moves for that peice" and "point at a square containing a piece". Rather than allow the player to click there just do a buzz sound effect and maybe show a message at the bottom of the screen. Again, illegal pieces could show a red outline.
The only suggestion I can think of is online play. Although I'm sure you are aware there of plenty of these around already.
Based on a quick fiddle with the demo ..
[-] Too many warning popups ..
Things like "You can't move there" can be replaced by a sound effect (buzz) and say, do a red outline around the piece showing the move to be illegal.
Same for "No legal moves for that peice" and "point at a square containing a piece". Rather than allow the player to click there just do a buzz sound effect and maybe show a message at the bottom of the screen. Again, illegal pieces could show a red outline.
The only suggestion I can think of is online play. Although I'm sure you are aware there of plenty of these around already.