The Griddle

Puzzle #444: Knighted Shape Sudoku

Posted March 5, 2010

In today's knighted sum sudoku, solve the overlapping grids using the chess knights and the outside sums.

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Comments

Michelle • 03/29/10 1:45 pm

Avatar of Michelle

I enjoy solving your puzzles very much, thanks a lot for your work! But I'm having problems with this one, because I don't really recognize which disjoint sets belong together and form and 8 sized set. And am I right in thinking that the second line should say 1 to 8 instead of 7 ?

David Millar • 03/29/10 2:02 pm

Avatar of David Millar

Hi Michelle, and thanks for the comments!

The two puzzles have 8x8 grids, but only require digits 1 to 7 since each 8th cell is a knight. Knights do not contain a digit and count as 0 if another knight points to it. I hope that clarifies that part.

As for the disjoint sets, I hope my formatting didn't get too confusing. Each of the two overlapped grids has 8 squares with a green background. Those are the 2 disjoint sets - unique to each overlapped grid. There are also curved bits along the outside, but those denote the two digits added to give the outside sums. I'll see if I can come up with a better format for those and update the sheet.

Thanks again, and let me know if you have additional questions!

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