First cross - Wil Strijbos

CHALLENGE: separate the two halves of the cross. A unique and intriguing puzzle, created over 30 years ago by Wil Strijbos.

A brain teaser of high quality, particularly difficult to solve!

This puzzle is a continuous work in progress by the inventor, who created his first wooden padlock in 1979. 

This new padlock is made entirely of gray anodized aluminum, very resistant to manipulation (like the professional rifles of mountaineers) and strong.

This is a real masterpiece in the world of sequential puzzles!