To generate a custom Sudoku booklet like the ones from Sudoku 129 , you can use online generators or DIY methods to create a high-quality paper version. Quick Ways to Generate a Paper Sudoku
Sudoku Explainer (SE) rates puzzles from 1.0 to ~12.0 (human scale). 129 is not on that scale. Some custom scales go 0–200; 129 would be mid-hard. "Better" could mean a puzzle rated 129 uses more interesting techniques than a rating 140 puzzle which relies on brute force. sudoku 129 better
Before attempting complex chains, ensure you are squeezing every possible "easy" solve out of the grid using these scanning methods: To generate a custom Sudoku booklet like the
To accelerate your progress, use these resources: use these resources: