Clementoni colorboom collection, 1000 pieces. It might seem like a nice pretty easy gradient, but don't let it fool you, took me more than 10 hours! : r/Jigsawpuzzles
Clementoni Colorboom Collection! - YouTube
Clementoni 31689 Colorboom Collection Pixel 1500 Teile Puzzle
Amazon.com: Clementoni 39594, Colour Boom Whirl Puzzle for Children and Adults - 1000 Pieces, Ages 10 Years Plus : Toys & Games
Clementoni - Colorboom Collection : Stairs 500 pcs. - Jigsaw Villa : Inspired by LnwShop.com
1500 pieces - Clementoni Colorboom Collection - Pixels - Great fun, if you like methodical puzzling (which I do) : r/Jigsawpuzzles
Amazon.com: Clementoni 39594, Colour Boom Whirl Puzzle for Children and Adults - 1000 Pieces, Ages 10 Years Plus : Toys & Games
Clementoni Color Boom Pure Collection Design, 1000 Pieces | Clementoni | | Jordan-Amman | Buy & Review
Amazon.com: Clementoni Colorboom Collection-Mosaic-1000 Pieces Colours-Puzzle Adult-Made in Italy, 39597, No Color : Toys & Games