The New Sudoku Players' Forum

[PaulIQ164]

I'm sre everyone's already realised this, but it occured to me that, when you're adding up numbers to work out a cell by using the 49/90/135/180-rule, you only need remember the 'units column'. Since the number you'll be putting in has to be one of 1 to 9, the tens don't matter a jot.

[Pi]

unless you have two boxes outside the row/collum/square and want their combined sum for some reason, like if you want tobreak up a 135 into 3 45's

[PaulIQ164]

Yes, unless you're doing that.

[Gamer]

Sounds interesting.

[Lardarse]

It's probaby going to only be useful for a single box, as with 2 boxes, there could be an error of 10 that will make you put the wrong number in.

LA

PS: Your first post has a typo in it.