LogFAQs > #972181688

KainWind posted...

Ohhh sorry I remember one other thing you have to do first to r3c4.Look at the horizontal sums in box 1.

Actual solution The 10+18+17 proves r3c4 is included in the 17 sum and is also equal to r1c3. Therefore you can make it green and get a digit in the 11 sum as well.

Edited for clarity

Thanks! That was it, very helpful. I think the next trickiest things after that were:

1) Right after working that out in Box 1, then having to use a somewhat similar summing methodology to determine that only 1 cell in Box 9 had to be unshaded, and that it had to contain 7. Thus, 5 had to go in r1c7 up at the top.

2) The 5/6 dependency for row 8 noted in post #159

https://gamefaqs.gamespot.com/a/user_image/9/5/5/AAb05zAAER6j.jpg