Rotational Pairs
(Published on 28. January 2023, 13:22 by sirxemic)
An introduction to a new Sudoku variant we'd like to call "Rotational Pairs". This is a collaboration between Raumplaner and me. Enjoy!
Rules
Normal Sudoku rules apply.
Digits increase along the thermometers.
Rotational Pairs: Every digit, except the digit in the center (R5C5), has a 'partner digit' that is always placed 180° rotationally symmetrical to it, seen from the center of the grid. Which digits are paired up must be deduced by the solver. (Example: If the digits 1 and 2 turned out to be a rotational pair, and R2C4 is a 1, R8C6 must be a 2.)
Solution code: The digits along the negative diagonal. I.e. R1C1, R2C2, R3C3... until R9C9.
Comments
on 29. January 2023, 10:24 by flaemmchen
Schöne neue Variante!
on 28. January 2023, 21:20 by heliosfant
Just for clarification: The partner digit cannot be the same digit, right? Or can it?
Reply:
You could say the center digit's partner is itself.
on 28. January 2023, 21:13 by dennischen
Can a digit be paired with itself? For instance, can r1c1 and r9c9 both be 1?
Reply:
Yes. Note that the rules state that every digit has a 'partner' except for the center one. So 8 digits pair with a different digit (its 'partner'), and 1 digit 'pairs' with itself.
