# Question about the Playfair cipher

The Playfair cipher with $$I = J, X$$ added into two same letters and the key keep distance.

The plaintext:

The whitespaces in plaintext and key are to be discarded.

not sure what they mean by I = J, X

The table

I am not quite sure what they are asking for. I know that you usally remove letter J and replace it by I, But now it says * I = J,X" what does he mean by that?

This is what I've written as "coronavirus spreads fast"

CO RO NA VI RU SX SP RE AD SF AS TX

• Do you know what is a comma and description of the Playfair? Mar 7 at 17:42
• Yeah my bad, looks like I just was a bit confused by the sentence how it was written. Mar 7 at 17:54