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2019-Aug-17: Volumes 19 and 20 of Killer Sudoku are out. Enjoy!

Toughest 12x12 Binox by KrazyDad, Volume 1

Each booklet contains a collection of 12 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.