Solve this puzzle at Krazydad
Super-Tough Killer Sudoku
Fill in the blank squares so that each row, each column and each 3-by-3 block contain all of the digits 1 thru 9.
The dotted lines indicate areas which also contain a non-repeating set of digits. These squares can be added together to produce the sums shown in the clues.
This Wikipedia Article has some useful tips.
"The most beautiful thing in the world is, of course, the world itself."
-- Wallace Stevens
















