A clear path, without a guess.
Understand what no-guess Minesweeper means, how Nineleaf checks its boards and how to reason from local clues, overlapping groups and the mine total.
Try an easy field →No-guess describes a solvable path
A no-guess board has a route to every safe tile using clues rather than an uncertain click. It does not mean every tile is safe to open, or that any move you choose will be correct. Nineleaf checks daily fields from their marked opening. A fresh practice field is checked from the first tile you choose.
How our check works
The solver begins with the safe opening. It sees only the numbers that have been revealed, the board dimensions and the mine total. It applies direct deductions and comparisons between groups of hidden neighbors. A generated field is accepted only when this process uncovers all safe tiles.
Direct clues
When the number of still-unknown neighbors equals a clue’s remaining mines, every tile in that group must be a mine. When all mines around a clue are accounted for, its other hidden neighbors are safe. These are the first rules to practice.
Overlapping groups
If a group A is fully contained in a group B, subtract A’s mine count from B’s. The difference tells you how many mines belong to the tiles that are only in B. A difference of zero proves those extra tiles safe. A difference equal to their number proves they are all mines.
The mine total is a clue too
Once all mines are logically accounted for, every other hidden tile is safe. Comparisons can also combine a smaller group with the remaining total. A flag you placed by intuition is not automatically treated as proof by the hint system.
What hints use, and what they record
Hints work from visible clues and the total, without looking up hidden mine positions. They can ask you to flag a proved mine or open a proved safe tile. Asking for a hint adds one to the result even if you decide to make the move yourself. Undoing a mine hit adds a rescue; both are included when you share a completed field.
Daily consistency and local progress
A date and difficulty identify one shared field and one shared opening. The daily date follows UTC, not your device’s local calendar. Your progress and themes live in your browser; this release does not sync them across devices or run a competitive leaderboard.