Fortress Fillomino - Up to N Sums (10x10)
(Published on 4. September 2026, 16:45 by Flinty)
Special Thanks
This puzzle was a collab with palpot, and we are both very proud to create our second entry for ThePedallingPianist's wonderful series!
Initial Setter Difficulty: 2-2.5 / 5
click image to play this week's Fortress Fillomino
FORTRESS FILLOMINO:
• Divide the grid into orthogonally connected regions and fill each cell with a number (not necessarily single-digit) showing the number of cells in the region to which it belongs;
• Each region must be either strictly larger than all of its orthogonal neighbours or strictly smaller than all of its orthogonal neighbours.
UP TO N-SUMS:
• A clue outside the Row or Column N indicates the sum of all cells up to the cell that contains the first appearance of number N. (N itself is not included in the sum.)
Solution code: Column 1
Comments
yesterday, 18:23 by Franjo
Thank you very much for creating and sharing another lovely FFF-puzzle. Excellent setting!
yesterday, 17:09 by kasperd
The ending was neat.
Once there was around 10 cells left to fill in I thought this cannot possibly have a unique solution. And then I discovered the little detail I had missed.
I don't know how you came up with that ending. (I don't know how you came with the rest of the puzzle either.)
Really nice puzzle. I found the difficulty to be in the easy end of two star puzzles.
yesterday, 01:25 by Christounet
Fun puzzle! Thanks :)
on 4. September 2026, 22:50 by Piatato
Fun!
on 4. September 2026, 20:05 by marcmees
solves like a refreshing waterfall. Thanks.
on 4. September 2026, 17:55 by ThePedallingPianist
The flow in this puzzle is absolutely wonderful! I had a smile on my face from start to finish! Thanks for another fantastic contribution to the series :)
