JonSR77
Senior Member
My dad studied to be an engineer (he wound up going into the family business as a jewelry designer). He loved math puzzles and logic puzzles.
He would get books by Scientific American author Martin Gardner. I bet folks could pick up used ones on Amazon for next to nothing.
We also liked Raymond Smullyan. I know he did books of those Knight / Knave puzzles. Other things also. Again, because this was back in the 70s, I bet folks could pick up his old books, used, for next to nothing on Amazon...
Here's a collection of Knight and Knave puzzles...
https://philosophy.hku.hk/think/logic/knights.php
the first one:
You meet two inhabitants: Zoey and Mel. Zoey tells you that Mel is a knave. Mel says, “Neither Zoey nor I are knaves.”
Can you determine who is a knight and who is a knave?
He would get books by Scientific American author Martin Gardner. I bet folks could pick up used ones on Amazon for next to nothing.
We also liked Raymond Smullyan. I know he did books of those Knight / Knave puzzles. Other things also. Again, because this was back in the 70s, I bet folks could pick up his old books, used, for next to nothing on Amazon...
Here's a collection of Knight and Knave puzzles...
https://philosophy.hku.hk/think/logic/knights.php
the first one:
Puzzle #1 out of 382
A very special island is inhabited only by knights and knaves. Knights always tell the truth, and knaves always lie.You meet two inhabitants: Zoey and Mel. Zoey tells you that Mel is a knave. Mel says, “Neither Zoey nor I are knaves.”
Can you determine who is a knight and who is a knave?
