CHAD
If 2, last letter must be D. If 1, second letter must be L (from CLAD)
*ZAR - 1
*HEF - 1
*LAD - 2
*HAD - ?
* indicates a discovered (and disregarded) character.
Red letters are proven incorrect.
Expounding: If CHAD has 2, only D can be right. If CHAD has 1, the D is wrong and therefor the L in CLAD must be right.
(Note: This game should be called ROLO)