(This post is part of the Genuinely Approachable Sudoku (GAS) series.)
In this variation on Killer Sudoku, the odd and even numbers must stay in balance everywhere.

PDF

or solve online (using SudokuPad)

Theme: Razor’s Edge

Author/Opus: This is the 158th puzzle from Clover, part of the Genuinely Approachable Sudoku (GAS) team.

Rules: Standard Sudoku rules (insert a number from 1 to 9 into each cell so that no number repeats in any row, column, or bold region). Also, in each cage, the sum of the odd numbers must equal the sum of the even numbers. Numbers cannot repeat inside a cage. (For example, a 5-cell cage might contain the numbers 2, 4, 5, 6, and 7 as 2 + 4 + 6 = 5 + 7.)

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 6:30; One party hat (🥳): 12:00. All other solvers earn a 🦕: sharp Shunosaurus.

Thomas Hits the GAS (highlight to view): 1:31, with SudokuPad replay file shared as a download for now (requires loading via settings menu with improvements expected before people should use this regularly).

Solution: PDF; solving video with explanation to be added later from GAS team.

Note: Follow this link for more Killer Sudoku and this link for classic Sudoku. More Killer Sudoku puzzles can be found in Killer Sudoku by Serkan Yürekli.

Note 2: Comments on the blog are great! For a more interactive discussion, please also consider using our Daily GAS discussion post on the GMPuzzles Discord. Not a member of the Discord? Click this link for basic access.