mobamoba wrote:A "branch" is part of the sudoku software game sold on this site in which you click a button - "start branch" - to test out a possible path. Perhaps you don't have a copy of the game.
Although "branching" is part of this sudoku software it not really necessary in solving a pappocom puzzle. The hardest technique used and only then in the very hard puzzles, is a x-wing. Most are solved by singles (naked and hidden), pairs (naked and hidden), triplets (naked and hidden) and locked candidates.
Mobamoba, if you're having trouble with a puzzle, you can post it ( check out the link in Cec'c post before posting) and some one here will help with the next move you could make.
MCC