Pentominous by John Bulten
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: Clock Trisection
Author/Opus: This is the 40th puzzle from our contributing puzzlemaster John Bulten.
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 = 6:30, Master = 10:00, Expert = 20:00
Solution: PDF
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 Plenty o’ Pentominous by Grant Fikes and Murat Can Tonta.
Amazing that this theme works! I get the clock part of the title, but not the trisection…
I think the Y represents the 3 clock hands, which “trisect” the clock if you imagine them to be larger.