What is Meathill Minesweeper?

Meathill Minesweeper (minesweeper.meathill.com) is a learn-while-playing Minesweeper with 9×9/16×16/16×30 boards, no right-click required, double-click chording, and Learn Mode: live probability heatmap + efficiency scoring with post-game replay.

How is the probability computed?

Constraints need = number - flags on frontier cells, split into components and enumerated exactly, isolated cells share remaining mines evenly, yielding P(mine) 0-1 as green→yellow→red 75% overlay.

What does efficiency mean?

Relative: open (1-p)/(1-pMin)*10, flag p/pMax*10, chording always 10, averaged per 6s bucket on the replay chart's right axis.

How to chord on Apple / trackpad?

Optimized: double-click any opened number where flags == number to open the rest. Right-click, long-press, and trackpad all work, plus mobile.

Meathill Minesweeper - Learn While Playing