Fillomino by Tapio Saarinen

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Fillomino by Tapio Saarinen


Theme: Small Numbers

Author/Opus: This is the 6th puzzle from guest contributor Tapio Saarinen. You can find more of Tapio’s puzzles on his new blog.

Rules: Standard Fillomino rules.

Answer String: For each cell in the marked rows/columns, enter the area of the polyomino it belongs to. Enter just the last digit for any two-digit number. Start with the 5th row, followed by a comma, followed by the 8th row.

Time Standards (highlight to view): Grandmaster = 1:45, Master = 2:45, Expert = 5:30

Solution: PDF

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

  • James McGowan says:

    Cute. 🙂

  • Andrew Brecher says:

    Curious about the “last digit of any two-digit number” rule. Usually it’s both digits, on this site anyway.

    • drsudoku says:

      When I’ve gone back to review this rule, I tend to be fairly inconsistent depending on puzzle style with what I do. I’m going to try to get to the constant length strings (meaning just unit’s digit of two-digit numbers) for awhile, in part to match what we do with the WPF Grand Prix series.

  • Justin Lam says:

    Great puzzle.

  • Matt says:

    I feel like anytime the theme is “small numbers”, a fillomino is 80% likely to turn out this way. If it was Grant writing it, make that 99%.

    • Jack Bross says:

      If Grant is writing it, and there’s a question mark after the theme (“Small numbers?”), the probability approaches 100%.

      • LorenR says:

        And if you liked this puzzle and its final result but never solved Dear John (published April 5, 2014) by the aforementioned Grant, then Dear Lord obtain it and solve it, posthaste. (This recommendation assumes that you can buy the monthly Giants that were included in Parton’s bonus; and frankly, I have no idea if you can.)


        PS, yes, the “solve it, posthaste” is a joke; it may well take hours or days (depending on how many puzzle solving minutes you have per break or day).

        • Grant Fikes says:


          IIRC, the plan is to make the first 12 monthly Patreon bonuses into a calendar, and I think Thomas said you can ask to get an old monthly puzzle in lieu of one you’d normally get for being a patron later. So yes, it is not too late to obtain “Dear John”, which is admittedly one of my favorite contributions to Grandmaster Puzzles in my career to date, and I am very happy that Thomas accepted and found a use for it.

          I have more to say, but it would be spoiler-y. LorenR, care to contact me at glmathgrant[something]gmail[something]com?

        • drsudoku says:

          People who discover our site and become patrons can give an equivalent donation ($6 per month) to receive the old Grandmaster level rewards, including this Giant Puzzle and other really nice ones.

          We have planned to turn the giant puzzles into a calendar. I’d still like to make that happen, but there is a bit of work to get it produced and distributed that I haven’t figured out how to do yet. Given how busy my October is looking, I’m not sure if it can be completed in time.

  • Love it! I was just teaching a friend the rules of fillomino last night, and I said “I tend to enjoy more when puzzles have a really big unclued polyomino” after showing him a few from a Nikoli book that mostly had just 1s and 2s.

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