This was particularly difficult because it is all gray scale. The image is a little confusing to look at in the first place being that it is an Escher image. After a while we got the hang of identifying pieces and we made it through. It was a lot of fun but tricky to say the least.
Oh man, I have this puzzle and twice attempted to start it, got frustrated and put it back in the box. I'm determined to have another go at it someday!
