A flood of colours within this interesting puzzle contains a variety of colours but also a 3-dimensional look with some blocks higher or lower than others. So, not only are there colours to sort but also shadows changing the colours on the pieces. While this isn't an exact gradient, there are variations within the colour families that make this more reasonable to do. Some strips like the orange strip mixed with the pinks/reds and the violet between the red and pink. The process is an interesting study in colour so starting with the edges is a good way to begin. From there, you can build the image from the edges in. There are duplicate colours, so putting the piece in the right context next to the right colour will be the key. No doubt this is a challenging puzzle but so rich in the experience that it won't seem like a challenge. Clementoni puzzles are crafted in Italy using premium quality materials to enhance the carefully selected imagery featured on each puzzle. All Clementoni puzzles are cut to ensure a perfect interlocking fit and a superior finished product. Finished puzzle size 59.2 x 84.3 cm