If you really want a brain-teaser you should play Minesweeper Flags Extreme with the ChessNeighbors plugin. Even if you are able to defeat AI HardPlus when playing normal Minesweeper Flags, this will make you go completely crazy in the beginning. You have been warned.
It is said that one image can say a thousand words and I believe this is also the case here.
Here is an example of how it can look when playing a game using ChessNeighbors plugin