Source: BiFi
Right here you can find some interesting cheats to use with the original Metal Gear 2 - Solid Snake cartridge on your MSX. The 'Solid Snake 2 Cheat 3' is the latest one. It enables the PANplus (Personal Area Network) ID-cards. It opens all doors you have the cards to without the need of physically choose any of them.
Relevant link: Game Info: Metal Gear 2 - Solid Snake
