Quattroquadri: Clock Faces Wheels
(Published on 26. September 2025, 13:30 by Crusader175)
Rules:
Quattroquadri: Place a digit from 1-9 in each empty cell in the grid such that digits do not repeat in any row, column, or 3x3 box.
Clock Faces: Four digits around a circle are placed in an increasing order starting from one of the four cells and going clockwise (white circle) or going anticlockwise (black circle).
Wheels: Digits in a grey circle have to be placed in the same circular order in the four cells that are touched by the circle. The circles might have to be rotated to the correct position by 90°, 180°, or 270°.
Puzzle Link: SudokuPad
Puzzle Hint: Clock Faces Guide
My youtube channel on solving sudoku: Crusader Puzzle
Solution code: Row 6
Comments
on 4. October 2025, 23:23 by Justalilguy
Interesting concept, it essentially turns into arranging a certain constraint around the clock faces.
on 30. September 2025, 01:17 by dzamie
Pretty simple once I learned what the given numbers meant - as Basil had, I initially thought that the wheels contained the same set of 4 numbers, rather than different sets containing the given positions.
Reply: Let me know if you have better wording suggestion. Thanks for solving dzamie!
on 26. September 2025, 17:26 by Basil
What do the digits in the white circles on the cell borders mean?
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Reply: That's the wheels digits. Basically it's like quadruples but must be in the same circular order. For example: The wheels in box 1 could be R2C1=1 and R1C2=4, or R2C3=1 and R3C2=4, or two other orientation.
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Thanks, now I understand. I thought all gray circles contained the same digits in the same rotational order.
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Reply: I'm open to better wording suggestion. Thanks for solving Basil!
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I would formulate it like this:
The given digits on the inside of a grey circle have to be placed in the four cells the circle touches in their same rotational positions. i.e. if you would place a 1 in R3C2, the 4 would have to be in R2C1 and if there would be a 4 in R3C2 the 1 would have to be placed in R2C3.
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Reply: Hmm, I'm not sure. I usually include puzzle tv link (can't for this puzzle) which allow the wheels to be rotated. I want to include the wording of wheels might have to be rotated to the correct position. I should start giving example in the wording though, maybe that will help.
