LITS by Prasanna Seshadri

LITS by Prasanna Seshadri

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or solve online (using our beta test of Penpa-Edit tools)

Theme: Welcome PS to GM Puzzles! (the shading is just for artistic purposes)

Author/Opus: This is the 5th puzzle from our new contributing puzzlemaster Prasanna Seshadri.

Rules: Standard LITS rules.

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 = 6:00, Master = 11:30, Expert = 23:00

Solution: PDF

Note: Follow this link for other classic LITS. If you are new to this puzzle type, here are our easiest LITS to get started on.

  • chaotic_iak says:


    That was a fun one, despite my general dislike about large puzzles. From getting tetrominoes by regions, the puzzle suddenly changes about maintaining connectivity. I think I have to do some little bruteforce at places, but it’s still a good one.

    And welcome Prasanna; expected 😛

    • Avatar photo drsudoku says:

      This wasn’t going to be a mystery week until Prasanna delivered this monogram puzzle (as is our custom) and it was 15×15 and quite hard. Once the “reveal” puzzle was clearly end-of-week difficulty, we decided we would have to try to keep him a secret as long as possible. Did that last even half of the first day?

      It is my pleasure to welcome Prasanna, who has delivered lots of creative puzzles this week and hopefully many more in the future.

    • Ya, we expected the introduction of Nanro to mostly give it away, but figured it was still fun to build up to this one. Also for fans of this site who aren’t familiar with my blog (or my WPC set), it’d have been nice (I hope), provided they didn’t see the comments on the Yajilin day.

  • Tamz29 says:

    This is a good LITS. Nice flow of trying not to close clusters of pieces.

  • skynet says:

    22 : 49s..Beautiful puzzle

  • edderiofer says:

    I had to guess a large portion of the puzzle, as I couldn’t find the break-in after determining how the large M-shaped region should be filled. Although I got the right answer, does anyone care to enlighten me?

    • I think you’re either not seeing the part under the G and how restrictive it is for that part to continue, or you’re at a further stage where you’ve mostly filled the upside down T shape in the middle left and you now need to go on eliminating the various shapes that could let it escape.

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