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  • Ariadne's Thread (AT). will solve every Sudoku. How to hybridize it with other strategies for more efficient manual solution will be studied. AT is what computers use to analyze every sudoku, to count the number of solutions. Contrary to common assumptions, AT can be used by humans and is nowhere near as difficult as often thought.
  • Bifurcation. study of bifurcation discussions
  • Simultaneous Bivalue Nishio. Abd's invention, similar to other advanced techniques, usable with ink on paper, except with extremely difficult puzzles where pencil will be used for the full resolution process, perhaps using Ariadne's Thread. (Other advanced techniques may also be used.)
  • Exocet. A recent addition to the armamentarium of advanced methods.