The first step in solving a Playfair given a "tip" or "crib" is to try to determine where that crib goes in the message. We know sentences are separated with STOP, and either the phrase BEWARE ICE ...

Using the same methods for trying to locate the crib RED PENGUIN FRENZY, we note that it can be segmented either as then it's quite likely that the EDF is part of a column, and we can see all five ...