129 Better __hot__ - Sudoku

After scanning sudoku forums (e.g., Reddit r/sudoku, Sudoku Wiki, Cracking The Cryptic comments), the most plausible real-world occurrence of "129 better" is:

If "Sudoku 129 Better" was meant as a search for a superior app, several high-rated options are currently leading the market: sudoku 129 better

: In box 2 (top-middle), the candidate ‘3’ is only in row 1 of that box. Then in the entire row 1, ‘3’ cannot be anywhere except that box — eliminating ‘3’ from row 1, columns 4–6 outside the box. After scanning sudoku forums (e