For this picture, if the top two spaces of the red box have mines, it will conflict with the yellow circle. Therefore, the top two spaces of the red box can only have 1 mine at most; but the 2 in the red circle already says that there are 2 mines in the red box, so there must be one at position a. I wanted to play Minesweeper some time ago, and I searched around online. It was either too crude or too many ads, so I made one myself: minesweeper game online. Features: It has all the functions of the classic minesweeper game. Win98/winxp style interface. Original sound effects: Off by default.
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