[NOTE: This is Volume 2 of a four-volume set; each volume must be purchased separately.]

"Unlocking Sudoku: The Art of Seeing the Logic"
Volume 2: Schools of Fish and Geometric Patterns (This Book)

This "how-to" four-volume workbook series is not a collection of mere "tricks" or "shortcuts." Instead, it meets the puzzle on its own terms by providing comprehensive, clear, and patient education in every logical concept and technique needed to solve even the most challenging Sudoku puzzles.

"Unlocking Sudoku: The Art of Seeing the Logic", the series, contains over 1,000 pages of instruction, 40+ dedicated technique chapters, hundreds of large real world example puzzles with concise explanations, and a variety of FAQs after each chapter to further solidify what you just learned. It also features a comprehensive assessment quiz with each chapter that gauges your knowledge of the technique studied. All of this supports the entire learning cycle, from initial discovery to practical application.

We spent many hours deconstructing thousands of Sudokus, from beginner to expert level (and beyond), to ensure we provide engaging, cogent, and thorough explanations for all the essential solving strategies.

Online Support Access: We realize that sometimes there are situations where you just get stuck. You may not see that Swordfish, or X-Wing. That's why we invite you to visit our community site, which we launched, where you can get answers when you're stuck at no extra charge. Our online support is here to ensure you never feel alone in your Sudoku journey.

Series Structure: Each volume in the series contains chapters with clear technique explanations, FAQs, chapter reviews, and chapter assessment quizzes.

Volume 2: Schools of Fish and Geometric Patterns (This Book) contains the following chapters:

Part 1:  Schools of Fish: Hooking High-Value Eliminations
CHAPTER 1: Learning the Language that Shapes Deduction
CHAPTER 2: An Introduction to Fish Patterns
CHAPTER 3: How to Use the X-Wing on Rows and Columns
CHAPTER 4: Using Fins and Sashimi on an Imperfect X-Wing
CHAPTER 5: Using a 3x3 Pattern to Catch a Swordfish
CHAPTER 6: Using Fins and Sashimi to Save a Swordfish
CHAPTER 7: How to Use Jellyfish to Secure Eliminations
CHAPTER 8: Saving a Jellyfish Using Fins and Sashimi
CHAPTER 9: Higher Order Fish: Little Fish vs. Big Fish

Part 2:  Advanced Patterns: The Geometry of the Grid
CHAPTER 10: Using Skyscrapers to Topple Candidates
CHAPTER 11: Using a Crane to Force Timely Eliminations
CHAPTER 12: Using a Two-String Kite to Unlock the Grid
CHAPTER 13: Recognizing the Power of an Empty Rectangle
CHAPTER 14: Using Bi-value Cells to Find a Y-Wing
CHAPTER 15: Extending XY Logic with the XYZ-Wing