Rules:
Divide the grid into polyominoes so that polyominoes of the same size don’t share an edge. Each cell contains a number equal to its polyomino’s size.
For each line, one circle contains an odd number, and the other an even. The odd circle gives the amount of odd numbers on the line (excluding itself), while the even circle gives the amount of even numbers (excluding itself).
If an odd number is in a cell with an arrow, it gives the amount of odd numbers in that direction (excluding itself) and if the number is even, it gives the amount of even numbers (excluding itself).
Solve online:
Solution code: Numbers in Row 1 (left to right, no spaces)
on 25. October 2023, 17:58 by dumediat
Great fun, thank you!
on 15. July 2023, 23:32 by Mickeyman
Very, very smooth solve, with real nice and interesting logic. Thanks Math Pesto!
on 12. July 2023, 00:33 by Rollo
Ein wunderschöne Rätsel, bis zum letzten Kästchen spannend!
on 5. July 2023, 15:10 by CHalb
Really interesting and rewarding to solve. Thanks a lot!
on 3. July 2023, 08:14 by fitzie
the solve was fun. you have to work each ruleset to unlock the other ruleset. there were several points where I had to ask "well how am I going to figure that one out", and the answer was to look around :)
on 29. June 2023, 15:54 by mdjvz
Nice
on 29. June 2023, 10:29 by Christounet
Fun puzzle ! A bit harder than expected looking at the difficulty rating. Thanks :)
on 28. June 2023, 18:07 by szabog
It's odd, even if it's easy :)
I enjoyed it a lot - thank you!
on 26. June 2023, 10:03 by Yann
Very fun and smooth puzzle, there are some very nice interactions here. Also, I found this as the easiest 100% on the portl, but by the time I solved it it went down. In any case, thanks for this puzzle.
on 26. June 2023, 05:23 by LibardiA
Sorry, new to these kinds of puzzles. Is there a limit on the maximum size of polyominoes? Because I can't write anything larger than a 9 into the online solvers but that has not stopped some setters before, ha :)
———
In general, polyominoes can exceed 9 cells. When using SudokuPad, I tend to just enter the tens digit as a corner mark and the ones digit as a center mark. -Math Pesto
on 26. June 2023, 03:51 by Agent
Very fun and easy puzzle! Great finish.
on 25. June 2023, 20:47 by Jesper
Good fun and very approachable.
on 25. June 2023, 19:16 by Myxo
Wonderful puzzle, so much fun!
on 25. June 2023, 18:46 by MicroStudy
quite possibly the smoothest math pesto puzzle of all time