The Attempt at a Solution
the solution according to blog is
Neither May nor June is possible because they have unique dates - that means Albert couldn't know for sure that Bernard doesn't know. If Albert had May for example, Bernard might have the number 19 and Bernard would know the date. But Albert knows for sure that Bernard doesn't know.
Bernard understood that ^ and said he now knows the answer. Threfore, his day must be among those that occurred in May or June as well. Hence, it can be neither July 14th nor August 14th.
Albert now understood the consequences of the upper statement and realized he knows the date: hence, it must be July 16th. If his month was August, he couldn't have said for sure.
i don't understand kindly assist me on this