Hello everyone. My book World Of Sudoku : Vol # 4 is now available in India on amazon.in. This book contains 120 handcrafted classic sudokus ranging from moderate to tough. All the sudokus are high on aesthetics with nice logical solve paths. The book also covers various advanced strategies like x-wing, swordfish, xy-wing, unique rectangles and other techniques that are required to crack the toughest of sudokus. All the sudokus are test solved for uniqueness by Netherland's top sudoku solver Chiel Beenhakker ( popularly known as Bakpao ) and his timings for each sudoku is mentioned so that the solver can compare his/her timings with that of Chiel's. Another exciting feature of the book is the online solving links with automatic answer checking enabled for each sudoku for people who like to solve sudokus online. This book is a must have in the collection of Sudoku books for the Sudoku enthusiasts. The link to the book is https://amzn.to/3kn7egT
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