Minesweeper is a classic puzzle game where the objective is to clear a grid filled with hidden mines without detonating any of them. The player uncovers squares on the grid, revealing either an empty space, a number indicating how many mines are adjacent to that square, or a mine itself. The challenge lies in using logic to deduce where the mines are located based on the numbers revealed.

The game offers four levels of difficulty:

1. Classic:
- Grid Size: 8x8
- Number of Mines: 9
This level is a traditional and straightforward introduction to Minesweeper, ideal for beginners. With a smaller grid and fewer mines, it provides a manageable challenge to practice basic strategies.

2. Medium:
- Grid Size: 9x9
- Number of Mines: 10
Slightly larger than the Classic level, the Medium difficulty adds a bit more complexity while still remaining accessible. The additional space and mine increase provide an intermediate step up from the Classic grid.

3. Expert:
- Grid Size: 16x16
- Number of Mines: 40
The Expert difficulty is where the game starts to demand more strategic thinking. With a larger grid and significantly more mines, players need to carefully consider each move to avoid triggering a mine.

Each difficulty level in Minesweeper offers a unique challenge, ensuring that both new players and veterans can find a mode that suits their skill level.