i have just completed an entire book of mild to fiendish but cannot get more than 2 numbers into the last puzzle. pleeease help. i can get the obvious 9 and 2 in the centre grid but after that ....
---l---l---
48-l-39l---
-7-l2-4l-31
-94l---l26-
8--l---l--9
-27l---l54-
54-l9-3l-8-
---l62-l---
---l---l---l