Mom’s suggestion is good. I also like many of the puzzles in the mountain catagory of unlocked. They have several complete horizontal changes of color. Note also that the pieces ALWAYS scatter to the same relative location; this is especially helpful for the edge pieces.
Pick a puzzle that has 3 distinct colors so that it is easier to do. I use the one called White Sand Beach.
Good Luck
Mom’s suggestion is good. I also like many of the puzzles in the mountain catagory of unlocked. They have several complete horizontal changes of color. Note also that the pieces ALWAYS scatter to the same relative location; this is especially helpful for the edge pieces.