THE DEVIL:
A “devil’s number” occurs when three 6’s and any one other number are rolled (for example: rolling three 6’s and one 5 would be called a devil’s five).
The number that is not a 6 becomes the devil’s number and cannot be used in any scoring, or re-rolls during that player’s next turn
A devil’s number is not considered an odd man out, so the different number is not re-rolled unless it can be used in a false four with one of the 6’s
Alternatively, you may sacrifice one point (if you have any points available) to make a “deal with the devil” and prevent the different number from becoming the devil’s number
Four 6’s is considered four of a kind, not a devil’s six