Inverse LITS by JinHoo Ahn
or solve online (using our beta test of Penpa-Edit tools)
Theme: Five Shurikens
Author/Opus: This is the 36th puzzle from our contributing puzzlemaster JinHoo Ahn.
Rules: Shade some cells black so that in each region there are exactly four unshaded cells that form an L, I, T, S, or O tetromino. When two unshaded tetrominoes share an edge across regions, they must not be the same shape regardless of rotations or reflections. All shaded cells must be connected into a single group, but no 2×2 group of cells can be entirely shaded black.
Example by Thomas Snyder:
Difficulty: 5 stars
Time Standards (highlight to view): Grandmaster = 12:00, Master = 25:00, Expert = 50:00
Solution: PDF; a solution video is also available here.
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.
Very excited to dive into this – it doesn’t look like a five star puzzle from quick glance so I’m curious how it’s going to play out.
Guessing Fgne Onggyr later?
I’m guessing the second puzzle jvyy or n abezny yvgf
What a brilliant puzzle. Very tough, but I got there in the end. Thanks very much for the interesting variant.