3-Style
Buffer (UF) edges / (UFR) corners, Speffz. 818 cases — but only 55 edge groups + 21 corner groups, each a piece pair.
(UB) in parentheses = piece · UB, BU bare = sticker, sticker's own face written first
Color scheme: white top, green front (yellow bottom, blue back, red right, orange left). Each Speffz letter is one sticker; the tile with the inner highlight is that sticker's own face. Edges show 2 joined tiles, corners a 3-face cube icon (main face on top).
A piece appears; type its Speffz letter as fast as you can. Pieces you miss come back more often.
A letter pair appears — perform its alg on your cube within the time. Then the alg is shown; press Space/Enter to skip to the next.
Or enter the sticker colors
←↑→↓ move · WRGYOB paint
(auto-advances) · Backspace clear & back
Face
order while auto-advancing: white → orange → green →
red → blue → yellow