Double LITS by Grant Fikes
or solve online (using our beta test of Penpa-Edit tools)
Theme: Logical
Author/Opus: This is the 247th puzzle from our contributing puzzlemaster Grant Fikes.
Rules: Same as LITS, except that each region must contain two shaded tetrominoes. These two tetrominoes within a region cannot touch each other, and can be the same or different shapes.
Answer String: Enter the length in cells of each of the shaded segments from left to right for the marked rows, starting at the top. Separate each row’s entry from the next with a comma.
Time Standards (highlight to view): Grandmaster = 4:00, Master = 5:15, Expert = 10:30
Solution: PDF
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 and in The Art of Puzzles 2.
4:13. Very nice use of connectivity here!
21:09.Messed this up as I always do whenever a double LITS crops up in GMP.
Was checking my answer a few times. The solution isn’t unique? Seems that the bottom left tetrimino is changeable.
Please confirm that the whole LITS is connected in your solution. There is just one answer, with two I’s in the lower-left most region.
Oh! I am sorry, I have found the problem in my working. Thank you as always for the fun puzzles!