Do you know any websites which has password rules doesn't make any sense and it is really hard to work with.
Here is one: https://arxiv.org/ Password must contain only letters, numbers, and underscores
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Here is one: https://arxiv.org/ Password must contain only letters, numbers, and underscores
when you impose rules on a password you also imply a list of non-possibilities.
On a more serious note, whenever a web site doesn't like my actually secure password, I try Password#1, and it works almost every time, with the most common rejection being because it's more than eight characters.