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Left-click to reveal | Right-click to flag | 🙂 to reset
Today's Best — Beginner
Welcome to Lady Di's Mines
Minesweeper.org has been serving the classic Minesweeper game since 2000. Play beginner, intermediate, expert, or custom boards — all free, no download required. Challenge yourself against the daily leaderboard or set a personal best.
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This is the Beginner board: a 9×9 grid with 10 hidden mines. It's the classic starting point — small enough to finish in under a minute once you know the rules, large enough to teach every core technique in the game. Left-click to reveal a cell. Right-click to plant a flag on a suspected mine. When all mines are flagged and all safe cells are open, you win.
Every number on the board tells you how many mines are hidden in the eight cells surrounding it. A 1 next to a corner cell with only two unrevealed neighbors? One of those two is a mine. A 0? No mines nearby at all — the board auto-expands through all adjacent empty cells. The entire game is built on reading those numbers and narrowing down where mines must be.
About This Site
minesweeper.org — nicknamed Lady Di's Mines — is a free, browser-based Minesweeper platform. No download, no install, no account required to play. It's built by a small team of developers who wanted a fast, clean implementation that respects classic rules while adding modern conveniences: daily leaderboards, No Guess mode, timed scores with 3BV statistics, and a growing collection of variants.
The Diana connection is a long-running in-joke turned brand: Lady Di's Mines. Somewhere between a tribute and a terrible pun. We lean into it.
Difficulty Levels
- Beginner (this page) — 9×9 grid, 10 mines. ~12.3% mine density. Learn the rules, build muscle memory, chase sub-10s times.
- Intermediate — 16×16 grid, 40 mines. ~15.6% mine density. Longer chains, more complex deductions, where most players get stuck.
- Expert — 30×16 grid, 99 mines. ~20.6% density. The benchmark. World records live here. Dangerous at every turn.
- Custom — Set your own board dimensions and mine count for a personalized challenge.
Quick-Start Tips
- Click near the center first. The first click is always safe and tends to open a larger cascade from a central starting position.
- Find the zeros. An auto-expanding empty region gives you free information and reveals lots of numbered edges to work from.
- Flag or just remember? You don't have to flag every mine — flags are just markers. Many fast players skip flagging and use memory instead to keep their click count low.
- Use No Guess mode if you hate losing to 50/50 situations. It generates boards that are always logically solvable.
- Chord to go faster. Double-clicking a revealed number auto-reveals all its neighbors if the right number of flags are placed. It's the fastest way to clear a board once you're confident.
Beyond the Classic Board
Once beginner feels easy, there's a lot more to explore here:
- Tentaizu — A Japanese star-chart puzzle. All clues are pre-placed, no clicking to reveal — pure logic from the first move. A new puzzle every day.
- Rush — 60-second competitive Minesweeper. Clear as many boards as possible before time runs out.
- Cylinder — The classic board but the left and right edges connect, creating a seamless wraparound field.
- Hexsweeper — Minesweeper on a hexagonal grid. Every cell has six neighbors instead of eight.
- Mosaic — A nonogram-style variant where clues count a 3×3 area rather than direct adjacency.