Thanks el Viro! Glad you like it. It was a fun project to work on, and actually it was easier to make it compared to my previous 10-liner entry, the Roguelike 10.
There is actually a variable threshold in the code I have planned to make adjustable so player could choose the difficulty. In the end though, program took so much space that locating this variable in the editable place wasn't straightforward if you load the program normally (without BASIC abbreviations). Of course, adding it as the start game option wouldn't fit either. I spent a decent portion of time to balance this threshold to the certain level so the game isn't too easy, but fair. I guess I did a decent work with the balancing and I can keep the badge of the evil game creator? ;) :D