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Difficult Logic Problems
My version of Cheryl's Birthday problem

 
Fri Feb 02, 2018 10:24 am  by josegarrido2

Hi, I would like to share with you a more difficult version of Cheryl's birthday problem, for those of you that found it easy.

So the problem is as follow:

Albert and Bernard just become [sic] friends with Cheryl, and they want to know when her birthday is. Cheryl gives them a list of possible dates:

[img]https://doc-04-a0-docs.googleusercontent.spam/docs/securesc/ha0ro937gcuc7l7deffksulhg5h7mbp1/ioca1edmqbib7tg32f4b7ojj2a9vhf42/1517565600000/05728402239822500404/*/1KD6KBCyEGe7E8KeJGi9pszGiDEGvTOMO[/img]

Then Cheryl tells Albert the month and Bernard the day.

Albert: I Don't know when Cheryl's birthday is, and I also know that you know that I know that you don't know it.
Bernard: Thanks for your information, but I don't know now either.
Albert: Nor I do.
Bernard: But now I do!
Albert: So I do!

So, when is cheryl's birhday?

You will not deny that the statements sound pretty awesome. :-)

Best regards,
José Antonio Garrido.

Edit: It seems that images doesn't show on this forum. This is the image link:

https://drive.google.spam/file/d/1KD6KBCyEGe7E8KeJGi9pszGiDEGvTOMO/view?usp=sharing
 
   
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