Minefield

This Minesweeper knock off appeared in the November 1992 issue of The Rainbow. You need to clear all the non mine squares in the grid. Higher skill levels include more mines in a larger grid.

Use the arrow keys to select a square. You can press the space bar to reveal contents of a square. If there are no mines adjacent to the square, it will be blank. If there are mines adjacent to the square, a number indicating the amount of adjacent mines will be displayed in the square. If it's a mine, you lose.

You can use the ENTER key to mark a square that you think contains a mine. 

The game keeps the best times for each skill level on disk.