Drag empty space to rotate view.
Click a face tile then drag to twist that layer.
Or use the buttons below / keyboard (U D L R F B, hold Shift for reverse).
Hit Solve anytime — it computes an optimal-ish solution (Kociemba's algorithm) and plays it back. First click takes a few seconds to prep the solver tables.
Pick a color, then click a sticker on the cube to paint it (drag to orbit as usual). Centers are locked.