WORLD OF SUDOKU PRESENTS CHALLENGING SUDOKU: VOL # 1

This book contains 150 handcrafted sudokus. The sudokus are hard and challenging, yet, they can all be solved without the use of any advanced strategies or guess work. All you need is the knowledge of basic sudoku techniques and a bit of perseverance when you are stuck in a puzzle and you should be able to crack the puzzle.

All the sudokus are provided with online solving links to Penpa as well as Sudokupad so that the solvers can also solve the puzzles on their gadgets.

All the sudokus are test solved by Édouard Lebeau and his solve times are mentioned with each puzzle.

I hope the book will be fun to solve. It also serves as an ideal practice material for sudoku championships as the difficulty level is similar to the ones that appear in various sudoku championships.