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If you enjoy these puzzles (or if you need help learning to solve them) then our new book Crack the Safe: Level 2 is now available. This new book contains 31 unique puzzles and includes full, detailed solutions. 
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January 2021
CategoriesAuthorsBrian and Melanie Fulton both earned doctoral degrees in mathematics at Virginia Tech. They formerly taught math at the university level, and now run a hobby farm while accuracy-checking collegiate mathematics texts. They homeschool their four children, frequently employing the aid of chicken, dairy goat, cat, and dog tutors. |
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