Theme: Just One (in Roman Numerals)
Author/Opus: This is the 20th puzzle from our contributing puzzlemaster Carl Worth.
Rules: Standard Pentominous rules.
Answer String: Enter the letter associated with the pentomino occupying each cell in the marked rows from left to right and in the marked columns from top to bottom, separating the groups with a comma. Use CAPITAL LETTERS!
Time Standards (highlight to view): Grandmaster = 5:45, Master = 7:45, Expert = 15:30