How to Play Mono Minefield Grid - Step by Step
The Mono Minefield Grid page loads a ~52 KB minefield clear in an iframe. Open cells, flag mines, chord numbered cells, and beat your best score. Press Play to start.
Step 1 - press Play
Press Play to inject the iframe (~52 KB). The engine auto-opens the minefield board. Upstream is the Cursor Arcade sweeper module by flancast90 (MIT).
Step 2 - open and flag
Left-click opens a cell. The first click is always safe. Right-click or Shift/Cmd-click places or removes a flag. Numbers show how many mines touch that cell.
Step 3 - chord and restart
Middle-click a numbered open cell when the flag count matches to open the rest of its neighbors. Press R anytime to restart. Esc returns to the one-game menu.
Step 4 - pick difficulty
Open Settings: Easy 9x9/10 mines, Medium 16x16/40, Hard 24x16/80. Dark theme is optional. Changing difficulty resets the board.
Step 5 - scores
A clear scores max(1, floor(10000 / (seconds + 1))). Best scores per difficulty stay under ftol:monominefieldgrid:storage. Reset all high scores clears them from Settings.
| Setting | Value | Notes |
|---|---|---|
| Download | ~52 KB | arcade shell + sweeper + CSS |
| Difficulties | 3 | Easy / Medium / Hard |
| Saves | localStorage | ftol:monominefieldgrid:storage |
| Server calls | 0 | Client-side only |
See when to play, comparisons, and Space Grid Puzzle.
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