It was fun! It reminded me of how I grinded the minesweeper collection a few years ago, but the end killed me.
There are four cells left with two mines, a 25% chance of winning. It all depended on pure luck.. I was lucky with the first mine, but not with the second one. One mine separated me from victory in advanced difficulty, and also this inscription at the end "Nice try bro, but no nice enough".
I advise you to make the closing of all mines, not all cells, a condition for victory.