10 into 9 best min fragment found: 3
  Cut up 10 sticks of length 9 like this:
    6 x (4 + 5)
    4 x (3 + 3 + 3)
  Reassemble as 9 sticks of length 10 like this:
    3 x (5 + 5)
    6 x (3 + 3 + 4)