## Cylindrical cross sums #2 - walkthrough

For fans of Killer Sudoku, Samurai Sudoku and other variants

### Cylindrical cross sums #2 - walkthrough

And the last one I made during my holiday, a cylindrical cross sums, with digits 0 to 8 appearing in every row, column and colored region.

Sums outside the grid; in brackets the number of digits you have to add up, the other number is the sum.

Enjoy, and please let me know what you think of it!

Last edited by Richard S on Sat Aug 19, 2006 3:59 am, edited 1 time in total.
Richard S

Posts: 24
Joined: 08 June 2006

### walkthrough for those who can't get started

Maybe it's fair to write a start of a walkthrough on this puzzle, because the zero is not often used in sudoku's and because 'sums from the side' is relatively new.

r8-9c5 = 0/2
r7-9c3 = 5/7/8; r7c3 =5 r8-9c3 = 7/8
r1c2-3 = 3/4

and than a very important one to continue:
r3c5-6 = 6/8 because of (4)16 [left] and (3)6 [right]

and than the rest:
r1-3C4 = 3/5/7
r6-7c5 = 3/6 (contains a 3 and sum is 9 (36-18-2-7)
r3c5 = 8
r3c6 = 6
r1-2c6 = 0/2
r2C4 & r4C4 = 1/4
r1c5 = 5
r1C4 = 7
r7-9c6 = 1/3/7
r7-9C4 = 4/6/8
r4-6C4 = 0/1/2
r4-6c6 = 4/5/8
r2c1 = 8
r3c1 or r3c2 = 7
r1c7 or r1c8 = 6 and 0 or 2
r2c7-9 = 4/5/7
r1c7 = 6
r2c7 = 4
r3c7 = 0
r2c5 = 1
r4c5 = 4
r2C4 = 3
r3c4 = 5
r2c8 = 7
r1c8 = 8
r3c8 = 2
r1c6 = 0
r2c6 = 2
r2c9 = 5
r3c9 = 4

and the rest is easier now, but don't hesitate to ask if you need help...

I will write a similar start of a walkthrough for my other puzzles soon.

Regards, Richard
Richard S

Posts: 24
Joined: 08 June 2006