Pentominonogram by Elyot Grant

Pentominonogram by Elyot Grant


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

Theme: 11X

Author/Opus: This is the 5th puzzle from guest contributor Elyot Grant.

Rules: Shade some cells so that the numbers outside the grid indicate the groups of consecutive black cells which are in that row/column in order, either from left to right or from top to bottom. There must be at least one white cell between any consecutive shaded groups. Rows and columns without outside clues can have any pattern of shaded and unshaded cells. Also, all the shaded cells must be able to be split into the eleven given pentomino shapes. Pentominoes may be flipped and/or rotated.

Difficulty: 3 stars

Time Standards (highlight to view): Grandmaster = 2:15, Master = 4:15, Expert = 8:30

Solution: PDF and solving video.

Note: Follow this link for other less common Shading puzzles.

  • nkm says:

    6:15, felt more like 2 stars to me

  • LorenR says:

    nkm: I agree. I got under GM time (and I rarely if ever get that) and that includes rereading the instructions on one minor point during the solve. Also: typo in rules? “seven” should be “11” I think.


  • zmaj says:

    Never seen this genre before, but I enjoyed it! 11:41

  • emin says:

    it took me a while to understand but ı solved and good puzzle

  • Yossi Fendel says:

    Clarifying LorenR’s note: the rules on the website here correctly show “eleven”, but the rules in the penpa-edit version show “seven”.

    • Avatar photo drsudoku says:

      There are so many places this text can propagate, so Loren’s message was correct when posted and then I fixed the web and missed the Penpa.

      I’ll advise the team to generalize these instructions because we can just say “the given shape set” and don’t have to use seven (like the last pentominonogram) or eleven (like this one) where we’ll run into errors in not looking at the content very closely so the intention is the shape inventory.

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.