Lol, I mixed up who knows what.

So, they can cross off May and June. But, then if Bernard knows it's a 14th, he still wouldn't know which month.

Undisciplined

May 33% possibility Bernard knows the answers (because of unique 19)

June 50% Bernard knows (because of unique 18)

If Alberts says: Bernard doesn't know answer (read 0% chance) we need months without unique numbers.

Everything else you can follow in my first comment below

science

[Not-so-daily puzzle] Singapore at it, again

south_korea_ln

Ok, now my turn.
In the Albert eyes:
May 33% possibility Bernard knows the answers (because of unique 19)
June 50% Bernard knows (because of unique 18)
July 0% (there's no unique numbers)
August 0% (no unique numbers).

If Alberts says: Bernard doesn't know answer (read 0% chance) we need months without unique numbers.

Everything else you can follow in my first comment below 