Der Sudoku-Knacker

In 20 Sudoku examples, ranging from easy to challenging, the author describes the solution paths of the individual Sudoku puzzles in a very detailed and easy-to-understand form with the help of the duplex method he developed. The handling of this new solving method is explained step by step, so that even the beginner can easily follow it and thus quickly achieve the desired success. The Duplex method not only impresses with a few simple rules, but now also makes it possible to solve difficult Sudoku puzzles, which one had previously capitulated to! The Duplex method is also interesting for professionals who want to escape the initial number confusion in the candidate search and also want to use other solution strategies sometimes.