Minesweeper

Open every square that hides no mine. A number tells you how many mines touch that square. Your first click is always safe.

Mouse

Left click opens · right click flags, then ? · both buttons, middle or Shift+click on a number chords

Keys

Arrows move · Space/Enter open · F flag · C chord · F2 new · 1-3 level · P pause · M sound

Touch

Tap digs · long-press flags · Dig/Flag button · tap a number to chord · pinch or ± zooms