Daily Kendoku (CanCan, SquareWisdom) #1

Today’s puzzle is a diagonal Kendoku variant. In addition to all other standard Kendoku rules, there is one extra for this puzzle: the numbers cannot be repeated on either diagonal, just like they can’t be repeated on any row/column. This…

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Subtraction combo

Udosuk, one of our visitors who is most active in giving hints for the puzzles we post here, has made a suggestion for a new solving technique for Killer Puzzles. He calls it “subtraction combo”. I’m posting his explanation here…

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