Safecracker 40 math wooden brain teaser puzzle - YouTube
Made it - Love puzzles? Try the SafeCracker 40. Handmade wooden puzzle. Solution requires you to arrange dials so each of the columns totals 40. | Facebook
image processing - Crack it if you can? But in the best way - Mathematica Stack Exchange
048] Solving the mind-blowingly difficult Safecracker 50 puzzle - YouTube
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SAFECRACKER 40 PUZZLE - Pot-Pourri
Safecracker: The Ultimate Puzzle Adventure - PC | GameStop
Amazon.com: Creative Crafthouse Safecracker 40 - Laser Engraved Math Puzzle for Teens - Handmade in the USA : Handmade Products