The worst rule that I have seen was that you can't have the same character next to each other.
So "Pasword1234#" was "strong" password, but "ha_ivrkbs(i5HzJzee%Ii3jsk#7jaot" was considered weak - note "ee" in the middle of string.
So "Pasword1234#" was "strong" password, but "ha_ivrkbs(i5HzJzee%Ii3jsk#7jaot" was considered weak - note "ee" in the middle of string.
No idea how maby bits of entropy it removes but it's absurd.