How to Use the Minesweeper Solver

Minesweeper looks like a game of luck, but most of it is pure logic — and the free LK Forge Minesweeper game has a solver built in to prove it. It can point out a cell that is guaranteed safe, tell you the exact odds that any hidden cell hides a mine, or hand you a board that is guaranteed solvable without guessing. Everything runs in your browser, so nothing is uploaded. This guide covers what the solver gives you and how it decides.

What the solver gives you

• Hint — press Hint and the solver names the single best action for the board exactly as it is: a cell it can prove is safe, or a mine it can prove is there. It also tells you the rule it used, so each hint teaches you the pattern behind it.
• Safe — reveals a cell the solver has proven mine-free. Use it when you want to keep moving without risk and without doing the deduction by hand.
• Mine probability — when the numbers genuinely do not settle a cell, the solver shows each hidden cell’s exact chance of being a mine, so a forced guess becomes the lowest-odds cell rather than a blind click.
• No-Guess mode — serves only boards verified clearable by pure deduction, so every game can be finished from the first click without a single guess.

How the solver decides

The solver treats every revealed number as a constraint: a “2” promises that exactly two of its hidden neighbours are mines. Taken together, those constraints often force a cell one way — if a “1” already touches a single hidden cell, that cell must be a mine; if a satisfied number still touches hidden cells, those must all be safe. The engine chases every such deduction until nothing more is certain. Only then, if a cell still cannot be proven either way, does it fall back to probability: it enumerates the mine layouts consistent with the board and reports each hidden cell’s exact mine chance. A cell it calls safe is always safe — it never dies to its own logic.

How often you actually have to guess

Because the solver plays by exact deduction, it also measures how much of Minesweeper is really solvable. Run over tens of thousands of boards, it cleared 80.6% of Beginner boards by pure logic but only 3.9% of Expert boards — so roughly 96% of Expert games force at least one guess. That is the whole reason No-Guess mode is worth using on the harder sizes: it strips out the unavoidable bad-luck losses. For the full benchmark — win rates, guesses per game and why density drives it — see how often Minesweeper forces you to guess.

That is all there is to it — open the Minesweeper board and try Hint, Safe, mine probabilities, or No-Guess mode. For more of the same, the Solvers & Analyzers hub gathers every LK Forge solver and game analyzer in one place.