Minesweeper Analysis

A minesweeper variant that can test your minesweeper skill and reaction time. Control: Mouse, touch screen Feature: 6*6 board with pre-open tiles 20 random stages 1 click per board, if the tile is safe, go to the next stage Mobile friendly (prefer Google Chrome) No flags allowed Score grading: S: >=2200 A+: 1900-2199 A-: 1600-1899 B+: 1300-1599 B-: 1000-1299 C+: 600-999 C-: <=599