Today I met the actually _unsolvable_ minesweeper event field:
Entered: 38/130, Total: 39/130
 1  1  0  0  0  1  1  2  *  2  *  *  1
 *  2  1  0  0  2  *  3  1  2  3  3  2
 3  *  2  1  0  2  *  2  0  1  3  *  2
 *  3  *  2  1  1  1  1  0  2  *  *  2
 1  2  3  *  3  2  2  1  0  2  *  3  1
 2  3  4  *  4  *  *  1  0  1  1  1  0
 *  *  *  3  5  *  4  1  0  0  0  0  0
 .  *  6  *  4  *  3  1  1  0  0  0  0
 *  *  *  4  *  2  2  *  1  1  1  1  0
<3> *  *  3  1  1  1  1  2  2  *  1  0
 1  2  2  1  0  0  0  0  2  *  3  1  0
 1  1  1  1  2  2  2  1  3  *  2  0  0
 1  *  1  1  *  *  2  *  2  1  1  0  0
Yes, you can mark only rooms next to you (as mines) and only way to check that
last room was jumping... Of course you could have noticed from entered/total
status it has to be mine, but still only way to get out was KABOOOOM suicide
bombimg and not getting price after solving the field.