The Big Book of Killer Su Doku
Just when you thought su doku couldn't get any harder... 200 all new KILLER SU DOKU puzzles!
So, you can do the standard su doku puzzles; jigsaw su doku is no problem for you; you've even mastered the fiendish kakuro puzzles.
What's next? KILLER SU DOKU!
Killer Su Doku puzzles have a su doku grid, but also have sets of linked cells which indicate the sum to which the digits in those cells need to total.
That's all you need to know.
Included in this book:
midi killer su doku
hard killer su doku
challenging killer su doku
monster killer su doku
Step up to the challenge - and get the killer su doku bug!
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