Extra Regions Sudoku by Bill Murphy
(This post is part of the Genuinely Approachable Sudoku (GAS) series.)
This puzzle adds four more regions and that must make it extra hardcore (or at least really special for GAS).

or solve online (using SudokuPad)
Author/Opus: This is the 63rd puzzle from Bill Murphy, part of the Genuinely Approachable Sudoku (GAS) team.
Rules: Insert a number from 1 to 9 into each cell so that no number repeats in any row, column, or bold region. The shaded regions must also contain 1 to 9 without repeats.
GAS Time Standards (highlight to view): Two party hats (🎩🥳): 7:00; One party hat (🥳): 13:00. All other solvers earn a 🦕: December Dystrophaeus.
Thomas Hits the GAS (highlight to view): 2:27, 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 other less common variations of Sudoku.
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5:45 so I expect a retrospective hat decision once the A is no longer TB. I found this solve to be a cascading set of resolvable triples with no “chocolate teapot” dead ends. So satisfying! Thanks, Bill!
Indeed it does — congrats on the good time.