# Decryption puzzle

This is the name of a famous historical figure. I've removed spaces but once decoded, it becomes blindingly obvious where the spaces should go. Try to decrypt it. The string is
"ibzuwrfzmzosulkybnphk"

Edit: I'm giving out a hint, It's a variation on the Caesar Cipher.

• Releasing hint in 2 hours – Hugh Chalmers Dec 31 '17 at 17:01
• 2 hours completed @Hugh – Siraj Alam Jan 1 '18 at 14:29
• @hugh Its been far more than 2 hours... – internet_user Jan 2 '18 at 13:31
• Sorry, I was gone for a while. The hint is: It's a variation on the Caesar Cipher. Edited into question – Hugh Chalmers Jan 2 '18 at 20:16

=CHAR(IF(CODE(\$C10)+Q\$1 > CODE("z"),CODE(\$C10)+Q\$1-26,CODE(\$C10)+Q\$1))