Pentomino Sudoku
(Published on 11. June 2022, 17:22 by KNT)
Place exactly one of each of the 12 pentomino shapes in the grid. Pentominos cannot overlap, but may touch. A cell with a clue indicates which pentomino must occupy that cell, and a pentomino may contain at most one clue. A clue outside the grid indicates the sum of numbers not in pentominos in the row or column.
Each pentomino must satisfy at least one of the two conditions:
1. Adjacent numbers in the pentomino must differ by at least 5.
2. The sum of the numbers in the pentomino is the same in each box of the sudoku that the pentomino is in. If a pentomino is wholly contained in a single box, this condition is invalid.
Solution code: Row 9 followed by Column 4
Comments
on 24. February 2024, 12:24 by Myxo
Amazing!
on 22. February 2023, 21:18 by ONeill
Genius puzzle!
on 23. November 2022, 04:57 by WickSaban
One of my favorite puzzles ever. Great work!
on 28. October 2022, 10:07 by peacherwu2
Brilliant setup!
on 13. September 2022, 23:58 by Piatato
You may have cured my pentominophobia with this puzzle, haha! I started out being quite terrified, but ended up triumphant. :-D Incredible puzzle, btw.
on 1. July 2022, 10:26 by MagnusJosefsson
Wonderful puzzle, I somehow missed this one before! Very challenging and satisfying solution path that gradually gets easier towards the end. Thank you KNT and thanks for the mention of my puzzle as well! :)
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Most of my puzzles are directly inspired by things I solve in weeks or days prior, I tend to just see something I love and try to put a spin on it.. but a lot of the times they end up harder than I intend haha. This puzzle in particular ended up totally not how I expected (I had to pretty aggressively use a computer solver to find a valid end arrangement of the pentominos) but I'm glad you and others really like it. The positive feedback I tend to get really makes my day :)
on 17. June 2022, 17:53 by henrypijames
Incredible rich and delicate interplay between the clues - love how this puzzle, despite of having a narrow, linear solving path, requires one to go back and forth between different clues over and over again in order to make progress.
on 13. June 2022, 09:45 by RJBlarmo
Lots of fun, enjoyed how well the ending worked out!
on 13. June 2022, 02:41 by LittleBallOfPurr
Exceptionally good puzzle that refused to surrender until the very end. Bravo, KNT, bravo!
on 12. June 2022, 22:49 by mathpesto
Amazing puzzle, very original and contains lots of beautiful logic!
on 12. June 2022, 18:58 by Niverio
Very nice and unique puzzle! Extremely enjoyable!
on 12. June 2022, 11:34 by Jesper
Great puzzle, thanks!
on 12. June 2022, 08:30 by Vebby
Phenomenally good! I concur with the testers that the logic was fresh and interesting throughout. No step felt unfair to me, including the mid-solve. This is probably my favourite puzzle of yours, which is a very high bar. Thanks KNT! :D
on 11. June 2022, 23:13 by KNT
Edited title, tags, CTC link
on 11. June 2022, 22:21 by lerroyy
Very nice puzzle! Harder in the middle and then very smooth solve. Thanks KNT!
