This HP will explain more than 50 Sudoku algorithms. Several
elementary algorithms are helpful for humans to solve with pencils
and intelligence alone. Advanced algorithms are for programs.
i think, this puzzle is extremely difficult for humans to solve.
It would be better not to try. This is a puzzle handled by the program.
6..2....1.8.9.4.2...9.1.3...9.8.1.35..3...7..45.3.7.6...7.4.2...6.7.9.1.9....2..3
This is about theGNPX v6.
The basics of the Sudoku analysis algorithm can be found in Sudoku Algorithm.
If you're not familiar with Sudoku Algorithm, that's a good place to start.
"Sudoku Algorithm 4" is an explanation of the basic algorithm for solving Sudoku puzzles.
The explanation uses many images to explain the logic. This is intended to make the essence easier to understand.
GNPX v6 is a complete overhaul of the GNPX code.
Also,GNPX v6 is a version that expands on how to solve Sudoku.