Jigsaw Puzzles: edges first, then sort by color

A big jigsaw looks like chaos at the start. A little order early on saves a lot of searching later.

1. Build the border. Edge pieces have one flat side, and corners have two. With the frame done, you know the size and shape of the picture.
2. Sort by color. Drag sky pieces to one area and grass to another. Pieces of one color are far easier to compare side by side.
3. Start with what stands out. Faces, writing, a bright flower or a sharp line between two colors are quicker to place than open sky.
4. Join small groups. Two or three loose pieces that fit can be joined before they find their place in the picture. Move the group as one.
5. Leave plain areas for last. By then only a few pieces are left, so trying each one is quick. Look at the shape of the tabs, not the color.

Zoom in when the pieces get small. On the hardest difficulties a board has hundreds of pieces, and a closer look makes the tabs much easier to read.