Levels
Each level is harder than the one before. Every board can be solved without guessing, so if you hit a mine, you could have known.
On every board an AI plays the same mines at a strong human pace. Its time is the one to beat. For scale: standard Expert is 30×16 with 99 mines (20.6%).
Mines left0
You0.0
AI0.0
You
0%
AI
0%
Click to reveal, right-click to flag, click a number to clear around it. Keyboard: arrows, Space, F. On a phone: tap, long-press to flag, pinch to zoom.