Thanks for the feedback. I'm not sure how much I could improve on this: Interface, sure, but I couldn't figure out how to ensure that a puzzle required no guesswork. I do guarantee that every puzzle is solveable, though.
Thanks for the comments. It's an old game of mine that I wanted to test out on Kongregate. It's fairly flawed, so I appreciate the positive comments. Two sequels are planned.
 "Firecracker Frenzy"){kind=icon}
 "Simple Sudoku"){kind=icon}
 "Gun Haiku: Ronin"){kind=icon}