Game steps

• When the game starts, the player gets prompted for the grid size (width x height) and the number of mines.
• The grid is generated according to these requirements.
• The games starts, the user is prompted for the coordinates (x, y) of the first cell to uncover.
• The game shows the resulting grid and prompts for new coordinates.
• And so on ... The game ends when there is no more non-mined cell to uncover or the player uncovers a mine.

Rules

• Uncover a mine, and the game ends.
• Uncover an empty cell, and the player keeps playing.
• In each empty uncovered cell the number of adjacent cells holding mines is displayed.
• Uncovering a cell holding the number '0' (=no adjacent mined cells) uncovers all adjacent cells, and so on.

Notes

• Command-line is sufficient, no fancy ui needed.
• Basically it's the good old windows minesweeper (minus flags).
• Focus on readability and simplicity.
• Tests are mandatory.