Wow, these maps do take me back... It was one of the first NES game I rented at the local video store as a kid. It was plugged into a Famicom adapter and had a cheap label on it with "Baby Mario" written on it, and we all really thought it was a Mario game, just one not brought to America.
That said, I wasn't really good at this game, and when I played it on an emulator not long ago, I noticed just how many worlds I never cleared on my own. I'm pretty sure I remember the cartridge allow you to change the starting world on the title screen, which is why I remembered playing the CPU world but not the pencils and rulers one nor any of the underwater stages either.
Thanks for the maps snesmaster
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Current projects: Aria Of Sorrow (GBA), Bucky O'Hare (NES), Metal Storm (NES), Clock Tower (SNES), Ristar-The Shooting Star (Gen), Sonic The Hedgehog (Gen), Sonic CD (Sega CD), Mega Man Zero (GBA), Battletoads (NES)