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2019-Jan-25: There are two new volumes of KILLER SUDOKU out today. Enjoy!

Toughest 10x10 Binox by KrazyDad, Volume 1

Each booklet contains a collection of 24 different puzzles, with the answers in the back.

The books in this volume are ordered by difficulty. The higher the book number, the harder the puzzles. If you are new to Binox puzzles, I suggest you start with Book 1.

These booklets are in PDF format and should print from most web browsers. If you like these puzzles, also check out my other puzzles.