Top Right Boi
(Published on 21. June 2025, 12:00 by PhoenixAki)
Rules:
- Normal sudoku rules apply: place 1-9 in each row, column, and 3x3 box.
- Dynamic Fog: Most of the grid is covered in grey fog. Placing correct digits will clear the fog underneath that digit and possibly in other parts of the grid as well.
- Top Right Boi: For every clue in the grid, the rightmost cell of the top row of that clue must have its largest digit. For example, a 2x2 cage requires its largest digit in the top right cell. Similarly, a kropki dot needs its largest digit be on the top or right (depending on if vertical or horizontal).
- Regional Constraints: No digit may appear more than once on each clue type. For example, if a cage contains a 2, no other cage can contain 2's.
- Renban: Digits on a pink line must form a consecutive set in any order.
- Killer Cages: Digits in cages must sum to the total in the leftmost cell of the top row of the cage. Digits do not repeat in a cage.
- Kropki Dot: A black dot between 2 digits indicates that one digit must be double the other (a 1:2 ratio).
- German Whispers: Adjacent digits on a green line must differ by at least 5.
- Arrows: Digits along an arrow must sum to the number in their attached circle.
- Maximum: Grey cells with outward pointing arrows must be greater than all orthogonally adjacent cells.
Everyone is welcome to solve this on a stream or video, but I would prefer you let me know when such a thing happens so I can check it out (DM me on Discord, same username phoenixaki) :)
Solution code: Row 9 from left to right (9 digits)
Comments
on 27. July 2025, 21:06 by MattJones
I loved this! Really interesting break in, took me a while to bludgeon it in submission! Brilliant.
on 3. July 2025, 13:52 by Atticus837
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on 1. July 2025, 14:18 by SweJo
Very nice!
on 1. July 2025, 08:08 by PancakePie
Beautiful!
on 23. June 2025, 16:15 by dkfan9
Nice puzzle. I was uncertain on the max cell relation to the other rules, but determined it could only work if the cells around it don't count as part of the constraint, only the max cell itself. I have no qualms with that, it's perfectly logical, but not initially intuitive for myself.
on 22. June 2025, 13:11 by TopRightBoi
This is the best puzzle I have ever solved.
on 22. June 2025, 05:01 by jinkela114514
How does the regional constraint work on max cells?
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PhoenixAki: No different than the others - if you were to work out one of the maximums is a 5, then no other maximum can be a 5.
on 21. June 2025, 23:53 by ViKingPrime
Love the interaction between all of these clues.
on 21. June 2025, 14:58 by sujoyku
Thank you for this nice puzzle, PhoenixAki! Go top right boi, go!
on 21. June 2025, 12:57 by illegel
I really stuggled at the beginning until I remember that the total of killer cage should be in the upper left. Really interesting puzzle！
on 21. June 2025, 12:08 by SudokuFan
Top Right Boi
