Solution

160707

First name
William
School
Kirkby Malzeard C of E Primary School
Country
Age
0

The winning strategy is:
You guess until you get 5 or under steps away from the treasure (it can be a bit more than 5) then you guess what ever spaces you are away from it in any direction till you get it. The picture is a way I did it in 4 moves by using this strategy.