Pentominous by JinHoo Ahn
or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between a composite mode for line/edge drawing and a letter entry mode.)
Theme: Three Types
Author/Opus: This is the 4th puzzle from guest contributor JinHoo Ahn.
Rules: Standard Pentominous rules.
Difficulty: 4 stars
Time Standards (highlight to view): Grandmaster = 5:00, Master = 7:30, Expert = 15:00
Solution: PDF; a solution video is also available here from GMPuzzles and a second one here from Cracking the Cryptic.
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.
A nice piece of deduction in the middle that settles one of the Ws. If this is not a masterpiece, what is?
Stunning construction, and marvellous logic too!
First try I seem to have made a mistake, or several, somewhere. Might try it again later, or watch the solution if that will be posted later today… 🙂
Huh, realized about 10 minutes into the solve video I actually never made a mistake but just didn’t find the right F-shape somehow. Haha!
Finished it, which felt very good. Thanks for a nice puzzle!
Unbelievable construction!
That was insane. Instant fave button 🙂
Marvellous creation !