Minesweeper

Every mine on this board can be found through logic. No 50/50 guesses, no coin flips, no "just pick one and hope." The board is 30×16 with 99 mines — same dimensions as hard — but each puzzle is generated by a constraint solver that checks full deducibility before accepting it.

In practice, this means the puzzles are harder than standard hard boards, not easier. The solver avoids configurations that would require a guess, which sounds like a favor until you realize it means the logical path is always there but sometimes deeply buried. You need every technique: satisfied numbers, forced mines, 1-1 and 1-2 patterns, constraint counting, edge work, and mine counter awareness.

The payoff is that every solve is clean. No asterisks, no lucky guesses, no "I probably would have hit a mine there." When you clear an Einstein board, every flag was placed with certainty and every reveal was backed by a deduction. That feeling is what brings people back to this difficulty.

When you're stuck, use the hint system. It'll point you to one cell that can be resolved right now and explain why. On Einstein boards, there's always a next step — the puzzle guarantees it. You just have to find it. For a walkthrough of every technique, see the full strategy guide on the Minesweeper hub page.