DanLock – Expert Sequential Discovery Puzzle DanLock is a sequential discovery puzzle lock designed by Dan Feldman. Originally created in 1996, it has become one of the best-known modern puzzle locks and is often described as feeling like multiple lock puzzles packed into one. The objective is to open the lock and then return it to its original state. DanLock includes two keys: one secured by the shackle and another that appears to be broken, setting up a layered challenge that requires careful observation and deduction. Like others in this lock series, DanLock is made from a real Nabob padlock that has been precision modified into a puzzle lock. The package includes the lock, a fabric bag, and an instruction card. Specifications: Designer: Dan Feldman Producer: Dan Feldman Difficulty Level: Expert Puzzle Type: Sequential Discovery Puzzle Objective: Open the lock and return it to its original state Dimensions: 2 in × 3.2 in × 0.6 in Weight: 10.8 oz Material: Brass and stainless steel Included: Lock, fabric bag, and instruction card Features: Classic Puzzle Lock: A well-known Dan Feldman design originally created in 1996. Sequential Discovery Challenge: Multiple discoveries must be made before the lock can be fully solved. Two-Key Setup: One key is secured by the shackle, while the other appears to be broken. Modified Real Padlock: Built from a Nabob padlock and precision modified into a puzzle lock. Why You'll Enjoy It: DanLock is a strong choice for experienced solvers who enjoy layered trick locks with a reputation for depth. Its sequential discoveries, unusual key setup, and restore-to-start objective make it a standout piece for any puzzle lock collection. Questions? Need more information about this puzzle? Contact us and we'll be happy to help.