Hard Minesweeper
Hard Minesweeper
This 30 × 16 board has 99 mines. Work on one small area at a time. Compare the numbers to find mines and safe squares.
Each new game opens the center safely with an animation. The numbers let you find at least one safe next move. Later, you may need to guess.
Controls
Click to open · Right-click or Shift-click to flagTap to open · Press and hold to flag · Drag to move · Pinch to zoom
When the flags around an open number match its count, click that number to open the other covered squares around it. This is called chording. Check each flagged mine with the numbers first. A wrong flag can cause you to open a mine.
Move the pointer to see nearby hints. On a touchscreen, all hints stay visible. A small circle with a pale green edge marks a safe square. A faint mine icon marks a mine. Hints use the visible numbers and total mine count. Check your flags against the numbers.
Use the arrow keys to move between squares. Press Enter or Space to open a square. F adds or removes a flag. N starts a new game. Your best times stay in this browser.
Hard has 480 squares and 99 mines. Wide screens show 30 columns and 16 rows. Narrow screens show 16 columns and 30 rows. The board turns while keeping your game.
Read the board, then choose
Each flag marks a known mine. Subtract it from every number it touches: 2 − 1 = 1, 3 − 1 = 2, 2 − 1 = 1. The remaining counts are 1-2-1. In the covered row, both ends have mines and the middle is safe.
Choose a covered square. Then decide whether it is safe, has a mine, or needs more information.
Why this answer is correct
A: Mine · B: Safe · C: Mine
The shown covered squares are the only unknown squares around these numbers. Gaps stand for open squares or the board edge. Check every nearby square before you apply the result. Flags in these examples mark known mines.