Heavy puzzles, beautiful puzzles - masterfully the fourth! Becoming a German champion is not easy, and defending the title is even harder. However, for most of the nearly 60 finalists of the fourth German Sudoku Championship, it was primarily the anticipation of unique and surprisingly new puzzles. Over 1,000 participants in the qualification had been left behind to now compete face to face. Join in and measure yourself against the best of the best through interim scores, time records, explanations, and reports. Stefan Heine is one of the few renowned and well-known puzzle creators. The book series "Heine's Puzzle Library" is constantly being expanded and contains selected quality puzzles at the highest level of craftsmanship - top-notch brain training! This series now includes 22 volumes - among others, ex.