Please choose the correct solution to the question: What is the quickest way to assemble a jigsaw puzzle?

Solution1: To quickly solve a jigsaw puzzle, sort out all of the inside pieces and put those together first, then assemble the rest by color and texture.

Solution2: To quickly solve a jigsaw puzzle, sort out all of the edge pieces and put those together first, then assemble the rest by color and texture.

Answer format: solution1/solution2