1983 Interface Publications (UK)
by Malcolm Young
One of the favorites from the book. It's strategy/puzzle, similar in ways to battleship games.
You move by entering commands such as N,S,E,W (for directions), D for releasing a depth charge and ENTER to skip a move.
You've a fleet of several ships that can move after a dice in thrown, the number given allows for number of movement of all ships individually.
Because of the nature of BASIC games, it's not the most exciting game to play, but if you like this sort of tactical, board like puzzles, this won't make you wow, but won't disappoint you much either.