Good quality puzzles mean that the image on the pieces aren't grainy, and won't peel off the tops of the pieces. The cardboard of the pieces should be durable enough not to rip at the sides.

To find the grain on a cardboard or wooden jigsaw puzzle piece, tilt your head and look at the pieces at an angle. The “itty-bitty straight lines or bumps” you see are the grain, Jill says.

A 30" x 22" puzzle board can comfortably fit most 1000 piece puzzles, though daring puzzlers who tackle more than 1500 or 2000 pieces at a time may need a board closer to 35 inches long.

with the puzzle board placed into an enclosure which houses all of the electronics. Each puzzle piece has a piece of copper embedded in a unique location so when it is placed on the board ...

A computer program is used to make sure all the pieces are cut the right way and size. Cardboard based puzzles are cut with a steel razor blade, while wooden based puzzles are cut with a laser.

To play, pick a puzzle from the booklet and set your pieces on the board according to the puzzle’s design. After setup, you’ll notice you have pieces left over. The goal is to fit those pieces ...