I just played the one you linked to on your website. Is it the most recent version? I was getting killed on the first click, and found a couple of places were I did get down to a 2x2 grid where I had to guess. Also, if you could make the cleared squares and the uncleared squares different colours, I at least, would be very appreciative ;-)

That sounds odd. First-click kills should never happen. If it happens again, can you note down the game ID given by the Game -> Specific menu item, and also the one given by the Game -> Random Seed menu item? Same if you have to guess.

Oh, and it might also help to report the version number from the About box. Particularly if you want me to tell you if it's the latest version :-)

The version now up on the website (r5879 or better) should use slightly different background colours for covered and uncovered squares. I found it looked really weird if I made them any more different, but I hope it's helpful anyway.

Have you had any more trouble with instakills or guessing?

I've just been playing r5936, which seems not to be having problems with instakills. I don't know whether it's just my computer, but I'm really not seeing any difference in the colours of covered and uncovered tiles. Looking at the M$ minesweeper, I notice that the covered and uncovered tiles are uniformly a medium grey, but that the uncovered tiles are framed more strongly than in your version. Possibly it's this difference which is confusing me.