"Killer Sudoku" is like normal sudoku but with a twist. Instead of being given some numbers to start with, you're told what certain groups of cells add up to. For example, if you know that the numbers in two cells must add up to 17, you know the number in one cell must be 8 and the other must be 9 (although you don't know which number goes in which cell).
Today we started work on this puzzle. The kids felt like it was going very slowly because we weren't able to fill in many numbers, but they were making great progress at narrowing down the options, which is how it goes with these puzzles!
Oh, my word.
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