Now on level 26 (25 was quite easy, contrary to what I had been told). Haven't had a chance to look at it yet though. My emulation is very useful though as it doesn't clear the board when you hit a bomb and it all turns green when you get the all the lamps lit. I've modified it so that I can create and save new boards too so when I get to the end I can generate even more frustrating and timesucking puzzles to give to people.....