QiYi Square-1 is the cheapest Square-1 model in the QiYi series which belongs to the other twisty puzzles category. At first glance, it seems that the Square-1 model is very easy to solve, but in fact, it is not. Therefore, it is well suited for those who want to challenge themselves. Despite the favorable price, it still has good features, the sides turn smoothly and the corners cut well. It is very suitable for those who do not yet have much experience in solving the Square-1 puzzle.