A free Minesweeper deduction trainer. Each round shows a partially-revealed board. Exactly one unrevealed cell is guaranteed to be a mine by the surrounding numbered hints. Flag it to grow your streak; miss once and the run ends.

How is the answer validated?

A pure function called verifyGuaranteedMine enumerates every possible mine placement consistent with the revealed numbers. If the target cell contains a mine in every one of those placements, the answer is correct. The function is the sole oracle · no preset flag to cheat against.

Is there always a provable answer?

Yes · every round is generated so at least one unrevealed cell is a guaranteed mine. Unlike classical Minesweeper, there are no 50/50 guesses. Every round is a pure reasoning win when you solve it · if you can't find the answer, the answer is still there waiting to be deduced.

Will this make me better at full Minesweeper?

Yes · the deduction half is what actually translates between the two games. Once you can scan a partially-revealed board and immediately spot a forced mine, the same skill makes you faster and more accurate in full Minesweeper rounds. The remaining 50/50 guesses in full Minesweeper are luck either way, but the deduction skill is trainable.

How does my progress save?

Your high streak is stored locally in your browser.

Minesweeper Flag · Русский

7×7 · 10 мин · классический темп

Поставьте флаг на закрытую клетку, которая должна быть миной. Дедукция по удовлетворению ограничений, защищённая от читов валидация. Требуется JavaScript.

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Флаг на мине