Minesweeper Classic

Why You'll Like Minesweeper Classic

Minesweeper in its modern form was written by Curt Johnson and Robert Donner at Microsoft and shipped on Windows 3.1 in 1992 as part of the Microsoft Entertainment Pack. It was designed partly as training for new Windows users — every safe click is a left-click, every flag is a right-click, and the whole game is a tutorial for two-button mouse mechanics in disguise. The earlier Mined-Out (1983, ZX Spectrum) and Relentless Logic (1985, DOS) had the same core concept, but the version that became the default association was the Microsoft one because it was on every PC for two decades.

Minesweeper is genuinely a logic game, not a guessing game, but with one famous exception: the very first click cannot be deduced. Most modern implementations — including this one — solve that by guaranteeing your first click is safe. In this build the rule is slightly stronger: when you click for the first time, the 10 mines are placed only after the click, and they avoid the entire 3×3 region centered on the cell you clicked. That is why the first click almost always cascades into a large open area instead of a single number.

This version is the Beginner board: 9 rows × 9 columns, 10 mines, around 12.3% mine density. The timer starts on your first click, not when the page loads. Right-click (or long-press on touch) flags a square; revealing a 0 cell triggers a recursive reveal of its neighbours, which is the cascade you see. Note one thing the original Windows build had that this one does not: chord reveal — clicking both mouse buttons on a satisfied number to auto-reveal the rest. If you are an old Minesweeper player, that muscle memory will not work here; you have to flag and click each cell yourself.

Minesweeper Classic is best approached as a deduction problem rather than a guessing game. Each move should reduce uncertainty: remove an impossible option, expose a forced placement, or split the puzzle into a smaller decision. When the board feels stuck, the missing clue is usually in a row, region, or relationship you have not rechecked yet.

For players arriving from search, the practical question is how to make the next attempt better. In Minesweeper Classic, that usually means focusing on deduction chains, candidate tracking, and reversible thinking. The more you understand that core loop, the less the game feels random and the more each restart becomes useful practice.

Strategy notes

Use a slow pass to mark what cannot happen, then a faster pass to act on forced moves. If you must try a branch mentally, choose the branch that creates the quickest contradiction so you can return safely.

How to Play

• Reveal a Square: Left-click or tap any covered square to reveal it. Your first click is guaranteed safe — mines avoid the cell and its eight neighbours.
• Read the Numbers: A number tells you how many mines touch that square diagonally and orthogonally (out of 8 neighbours).
• Flag a Mine: Right-click, long-press on mobile, or turn on Flag Mode to plant a flag on a suspected mine. Flagged squares cannot be detonated by accident.
• Cascade: Revealing a 0 (a square with no mines around it) automatically reveals all its neighbours, often opening up large safe regions in a single click.
• Win: Reveal every non-mine square. You do not need to flag every mine to win.

Tips and Strategy

• Scan the board in a consistent order so you do not miss obvious constraints.
• Mark candidates or possibilities before making risky commitments.
• Prefer forced moves over guesses, even when they seem small.
• When stuck, recheck the most constrained row, column, peg, or region.
• Undo mentally from the last certain point, not from the last move you liked.