LITS by Thomas Snyder
or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between a shading mode and a mode to mark edges with an X.)
Theme: Pentominoes
Author/Opus: This is the 420th puzzle from Thomas Snyder, aka Dr. Sudoku.
Rules: Standard LITS rules.
Difficulty: 2 stars
Time Standards (highlight to view): Grandmaster = 1:15, Master = 2:15, Expert = 4:30
Solution: PDF and solving video.
Note: Follow this link for more variations of LITS and this link for classic LITS. If you are new to this puzzle type, here are our easiest LITS to get started on. More LITS puzzles can be found in LOTS O’ LITS by Grant Fikes and Prasanna Seshadri, in The Art of Puzzles 2, and in our beginner-friendly collection Intro to GMPuzzles by Serkan Yürekli.
1:50. Nice one, lost some time on the right side.