This was fun, it felt like I was lockpicking.
Here's a list of the rules in Base64:
T2RkIG51bWJlciBvZiBjb25zb25hbnRzCkNvbnRhaW5zIHRoZSBsZXR0ZXIgTgpWYWxpZCB3b3JkCkFkamFjZW50IGNvbnNlY3V0aXZlIGxldHRlcnMgb2YgdGhlIGFscGhhYmV0CjYgb3IgNyBjaGFyYWN0ZXJzIGluIGxlbmd0aApUd28gb2YgdGhlIHNhbWUgdm93ZWw=