Hi all. Recently started with Sudoku, love it. Downloaded and registered the program from Sadman (great, particularly because it works as a learning tool for me).
I'm having REAL trouble getting my head around the Swordfish technique. X-Wing and XY-Wing no problem, but Swordfish I can't seem to understand. Maybe I'm tired. Maybe I'm getting old. Maybe it's the beer ...
Someone please post a simple explanation ...