Sudoku Players' Forum (clone)

Can anyone tell me what is the Sint Probability Method. It's being used in sudokufever.com as a solution method for diabolical puzzles but I can't quite figure it out. Thanks.

The exact same question was asked here sone 6 years ago!!!
Shouts SCAM to me! Newish member, posting an external link!!!
More likely, OP willl be modified to redirect to a dodgy website!

Agree.

Concerning the old post:
Using graph theory for sudoku problems was made popular by Gordon Royle, who has found most of the first 30000 known 17-clue puzzles with the help of sophisticated graph theory programs.
But forget it for manual solving.
And a warning to use the fever site: Because of the poor other solving methods some "diabolic" are simple, and some have multiple solutions, which are "solved" with the implemented graph algorithm.
E.g. i got this one: ..1...9...9.3.7.6.6...8...1....3.......6..............9...6...5.2.....3...8...7..