Solution

194942

First name
Sam, Olivia & Tommie
School
St Helens C of E School
Country
Age
0

First, we tried 1 at the top, but when we got to the bottom row, we couldn't find the difference for 3. On the second try we got to the second row and thought we couldn't do it. We started to do the third try and when we got to the last row we realised that we could do it on the second try!
Our final solution is:
2
3 5
4 1 6