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https://gitlab.com/christosangel/tui-mines
tui mines is evidently a text-based user interface implimentation of the classic mine sweeping puzzle game.
The user has to clear a board, square by square, flagging the squares suspected to hide mines on the way.
If the user opens a mine square, things go KABOOM! and the game is lost.
The user uses hints from the numbered squares. This numbers how many bombs are touching that square in every direction ( 8 in total).
Through logic, and a bit of luck, the player ends up clearing all the squares, while flagging all the mines.
And to see the correct cheatsheet as well:
sed -i 's/hjkl/awsd/' tui-mines.sh