Jigsaw

• Drag a piece, or just click it: it sticks to the pointer, and the next click puts it down.
• Drop it next to the one it belongs beside and it clicks in.
• Joined pieces travel together, so whole slabs move at once.
• The table never moves. All of it is on screen, always.
• Ghost fades the finished picture into the frame. Tip out scatters this cut again.
• G toggles the ghost, Esc puts down a carried piece.

The plate is painted from the date, not fetched — everyone gets the same picture, and all four cuts are cut from it. Each cut keeps its own progress, so 1000 can sit half-finished while you take a run at 100. New plate at midnight UTC.