This one is not for the weak 9 out of 10 difficulty
My wife has been doing this for years and usually can do a 1,000 pc. Puzzle in 3-4 days. So far, it has been almost 2 weeks and she is now about alittle more than half way done. As the toughest puzzles in the world are 1 color and you have to rely on shape, this too offers that feature of difficulty. At least this does have a frameable worthy picture, the mysterious cats eyes.
My son's cat looks just like the puzzle so I bought it for him. So, I will have to wait until he puts it together, that said, he was pleased with the gift.