by Animator » Sun May 08, 2005 5:19 pm
This is a better hint: look at box 8.
Missing numbers: 1, 2, 3, 4, 7, 8
Possibilities:
r7c4: 1, 2, 3, 4, 7, 8
r7c6: 2, 7, 8
r8c5: 1, 2, 4, 7
r8c6: 2, 7
r9c5: 1, 3, 4, 7, 8
r9c6: 7, 8
Two things you can view: 1, 3, 4 can only go in r7c4, r8c5, or r9c5, this meaning that the 2, the 7 and the 8 can be removed from these cells (as possible candidates)
Another view: r7c6, r8c6 and r9c6: these three can only have the number 2, 7 or 8, so you can remove them from the other cells.
When you do this you will see something intresting in box 5 (the number 8)