This one was challenging with the mosaic pattern over top of all the bright colors. Fun! I love Cross and Glory puzzles for their modern graphics, bright colors and unique themes. The puzzle pieces fit tightly so you can move blocks of pieces easily without them falling apart. And the vertical pieces differ from the horizontal pieces so you can align them easier than most other puzzle brands. The only other brand Iβve ever seen that does this is Galison. Cross and Glory is better quality, though.