JigZone jigsaw puzzles work on the iPad and other tablet touch screen devices which support the HTML5 canvas element.
You can just drag a piece with your finger, or use two fingers to pinch pieces together.
The pieces move with momentum, you can flick a piece to the other side of the screen.
As an alternative to dragging, tap a jigsaw puzzle piece to hilight it, then tap on the screen where you want that piece to go.
Multi-touch: If you are feeling dexterous, try using six fingers to solve a six piece puzzle
in one move.