A5 puzzle size ≈ 22*17cm, number of pieces is about 80 pieces
A4 puzzle size ≈ 30*23cm, number of pieces is about 150 pieces
A3 puzzle size ≈ 42*33cm, number of pieces is about 220 pieces
A2 puzzle size ≈ 60*43cm, number of pieces is about 460 pieces
