tried it. nice game. feedback:
- the sound that's made when one moves the cursor is pretty strident, while the sounds for plugging in a piece and solving the puzzle are like butter. maybe there's a better sound match possible.
- unless the solution-checking routine is very CPU-intensive it would probably be best to run it whenever someone plugs in a piece. no real need for the extra step of the enter key in such cases.
minor quibbles at best.