Did you solve it? Sandwich sudoku - a new puzzle goes viral
Link Share :https://www.theguardian.com/science/2019/may/06/did-you-solve-it-sandwich-sudoku-a-new-puzzle-goes-viral
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The solutions to today’s puzzles
Earlier today I set you three sandwich sudoku puzzles. It’s a new variant of Sudoku that is getting lots of attention. To get a printable page of the problems click this link.
If you got stuck with the last one, which was very hard, this video reveals how to solve it.
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