It depends on the puzzle, but one problem here is when there's multiple possible pieces that fit. I have a 3000-piece puzzle where the blue sky was like this: many of the pieces were nearly identical, so there were multiple pieces that could fit together at any point. You'd only figure it a piece was in the wrong place when you couldn't fit any of the neighbors.
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It depends on the puzzle, but one problem here is when there's multiple possible pieces that fit. I have a 3000-piece puzzle where the blue sky was like this: many of the pieces were nearly identical, so there were multiple pieces that could fit together at any point. You'd only figure it a piece was in the wrong place when you couldn't fit any of the neighbors.