(This post is part of the Genuinely Approachable Sudoku (GAS) series.)
Only notes, not sure givens, are in this Pencilmark Sudoku by Bill Murphy but if you can find the key break-ins you should be able to get sprinting even with nothing big at the start.

PDF

or solve online (using SudokuPad)

Theme: Gazillion Ear

Author/Opus: This is the 11th puzzle from Bill Murphy, 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). The given pencilmarks represent the only numbers that can appear in those cells.

GAS Time Standards (highlight to view): Two party hats (🎩🥳): 7:00; One party hat (🥳): 13:00. All other solvers earn a 🦕: Inspired Ignavusaurus.

Thomas Hits the GAS (highlight to view): 2:23, 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.

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.