Finally speedcube.nl Puzzles start selling the original puzzles created by famous inventor Wil Strijbos

This is a true masterpiece in the world of sequential puzzles:  lots of steps needed to solve this lock!

CHALLENGE: Find the way to open the secret padlock and find out what it hides inside

A brain teser of high quality and particularly difficult to solve!

This puzzle is a continuous modification of the inventor, who created his first Loto wooden padlock in 1979. Evolving the mechanism, compartments and passages made this puzzle almost unsolvable and now the padlock deserves the highest ranking of difficulties: 6/6 EXPERT

The new version is made of blue anodized aluminum, very resistant to manipulation (like the professional rifles of mountaineers) and robust