This puzzle has been set for the Secret Santa challenge on the CtC discord and is approved by the Santee to be published here :)
Rules:Normal Sudoku rules apply.
Star Battle: Each row, column, and box contains exactly two stars. Stars may not touch orthogonally or diagonally. Stars also contain digits and behave as normal Sudoku cells.
Habitable Zone: Any digit orthogonally adjacent to a star must differ from the star’s digit by at least 3.
Comets: Little-killer clues give the sum of star digits along the indicated diagonal (only star cells count).
Resonance: Identical digits may not be a knight’s move apart.
Solution code: First row (9 digits)
today, 00:53 by MummaBear
Fun solve, enjoyed the combination of variants.
yesterday, 22:14 by gxorgx
very nice puzzle. the sudokupad solution checker has a king's move restriction which should be removed