Open Vault Challenge: Level 2
Challenge reminder : http://discourse.cri-paris.org/t/introduction-to-the-open-vault-challenge
Be sure you understand level 1 first. The problem and its solution are posted here: http://discourse.cri-paris.org/t/open-vault-challenge-level-1.
In the 3 videos below, I am typing the exact same code into the interface. It is the code of the vault for level 2.
Try it online
If you think you have cracked the code, you can verify it online: http://openvault.jgrizou.com/#/ui/level_2.json