It guarantees a logical path
From the published starting state, the deterministic rule set can complete the board without choosing a cell by probability.
Play a fresh board that can be solved with logic alone—no 50/50 guesses required.
Every move has a logical reason, but you still have to find it. Use a hint if you get stuck; hints count on your result card and never play the move for you.
Your time, attempts, and streak stay in this browser. There is no account or global leaderboard.
Stuck in another game? Open the Solver →From the published starting state, the deterministic rule set can complete the board without choosing a cell by probability.
You can still reveal a mine or place a wrong flag. Restart the same board or request a hint, which highlights one forced move without playing it.
The challenge changes at the UTC date boundary. Everyone receives the same versioned board for that date.
Completion, best time, hints, attempts, and streak are stored locally. Clearing site data removes that history because there is no account or cloud sync.