It’s been a few months now since khaleh Kathy gave me a set of 2-piece puzzles and it took me a while to figure out what to do with them. At the beginning daddy made it easier for me to solve the puzzles: he used to give me only two matching halves and let me struggle with the matching mechanics. In the next phase, daddy used to give me four halves, making sure that the matching pieces were easy to identify because of the their background color. Eventually I became pretty good at this game: nowadays we spread half of the pieces on the coffee table, then I find the match for whatever other piece I pick from a pile. Below is a set of pictures showing me in the process.