: Studies suggest that Sudoku can enhance short-term attentional capabilities and concentration.
: Many sudoku apps (e.g., Sudoku.com, BrainBashers, Puzzle Club) number their puzzles sequentially. "129" could simply be puzzle #129 in a collection. A player might be comparing it to another puzzle, saying puzzle 129 is "better" (e.g., more elegant, harder, or more logical). sudoku 129 better
"Sudoku 129 better" is almost certainly a player’s comparative note about puzzle #129 in a numbered set (e.g., from a book or app). The player finds that puzzle superior to others in the set, likely due to its logical elegance, satisfying difficulty, or lack of guesswork. Without additional context (e.g., which app or forum), this is the most coherent and practical interpretation. : Studies suggest that Sudoku can enhance short-term
If four cells forming a rectangle across two rows, two columns, and two blocks contain identical pairs like [2,9] , the puzzle would technically have two valid solutions (a structural flaw). A player might be comparing it to another