How to finish quickly Sudoku Puzzles

This booklet has eight chapters and 102 examples. Chapter 1 (single putting and single posting) is written for beginner and middle players. Chapter 2 (multiple putting) is written for confirmed players. Chapters 3 and 4 (covering rules, perfect polygons) are written for players who want to become experts. Chapters 5 and 6 (QL chains, AS Chains) are written for players who want to become great experts. Chapter 7 (mixed chains) is written for players who want to become very great experts. Chapter 8 (dilemma principle) is written for players who want to finish infernal puzzles by avoiding some difficult rules in chapters 3, 4, 5, 6 and 7.