Challenges "Check for Palindromes"

Why should the palindrome(“1 eye for of 1 eye.”) return ‘false’?
I think the result must be ‘true’!

A palindrome is written the same way backwards, just read it.

Because its not a palindrome

"1 eye for of 1 eye." // Forward
".eye 1 fo rof eye 1" // Reversed

You’ll need to remove all non-alphanumeric characters (punctuation, spaces and symbols) and turn everything lower case in order to check for palindromes.

At the first (according to above note) we should remove all non-alphanumeric characters.
And the ‘eyeforofeye’ must be palindromes. Is not it?

Is a palindrome yes. The number 1 is an alphanumeric so it must stay

So the digits should not be removed.