or solve online (using our beta test of Penpa-Edit tools)
Author/Opus: This is the 21st puzzle from our contributing puzzlemaster JinHoo Ahn.
Rules: Standard Pentominous rules.
Difficulty: 3.5 stars
Time Standards (highlight to view): Grandmaster = 4:00, Master = 8:30, Expert = 17:00
Note: Follow this link for other Pentominous puzzles. If you are new to this puzzle type, here are our easiest Pentominous to get started on. More Pentominous puzzles can be found in the Plenty o’ Pentominous series by Grant Fikes and Murat Can Tonta and in our beginner-friendly collection Intro to GMPuzzles by Serkan Yürekli.