Intermediate
Grid: 16 × 16 · Mines: 40 mines
For when you've built the basics and want to step up.
Intermediate is a 16×16 grid with 40 mines — the signature difficulty of standard Minesweeper. The longer borders make patterns and subset deduction come up often.
Intermediate is also verified to be solvable by logic with no guessing. It's a great level for picking up speed with chording.
- Place your flags, then chord to open the surroundings in one go.
- When stuck, tidy up overlapping candidates with subset comparison.