Safecracker 50 Wooden Math Brain Teaser | Difficult Puzzle for Adults

Safecracker 50 is a handcrafted wooden math brain teaser designed and built by Dave Janelle and the family workshop crew in Hudson, Florida. Five rotating rings (one base ring plus four top rings), laser-cut from maple and cherry hardwoods, with deeply laser-engraved numbers. The goal is to align the rings so each of 16 vertical columns sums to 50. There are exactly 1,048,576 ways to align the rings (over a million). Only one is correct.

Palm-sized at just over 5 inches in diameter, small enough to keep on a desk, a nightstand, or a workbench, hard enough to keep coming back to.

• Difficulty: Hard. Sixteen times more difficult than Safecracker 40 (which uses four rings to sum 40).
• Material: Laser-cut maple and cherry hardwoods, deeply laser-engraved numbers for precision and durability.
• Diameter: Just over 5 inches.
• Personalization: Laser-engraved names, dates, monograms, or a short message on the base, up to 45 characters.
• Ships unsolved. Printed solution sheet included so you (not them) know the answer.
• Ships in one business day. Personalized orders ship in two.
• Gift for: math enthusiasts, engineers, dads who like a real challenge, retirement gifts, STEM teachers, puzzle collectors.

Want something more approachable? Try the easier math puzzles collection. Want something harder? Step up to the expert wooden puzzles collection.

Designed and handcrafted by Creative Crafthouse in Hudson, Florida. Copyright 2009.