David Karn

About the Author

David Karn is a renowned puzzle enthusiast and author specializing in Sudoku variations, bringing joy and intellectual challenge to solvers worldwide through his meticulously crafted books. With a passion for numbers and logic that began in his early years tinkering with mathematical games, Karn has dedicated his career to designing accessible yet engaging puzzles that cater to a wide range of skill levels. His works emphasize large-print formats for ease of use, particularly for avid readers and seniors who appreciate the clarity of 16-24 point font on standard 8.5x11 inch pages. Drawing from diverse Sudoku variants like X, Hyper, Twins, Triathlon A+B, Marathon, Samurai, 12x12, and 16x16, Karn's collections offer hours of stimulating entertainment, fostering problem-solving skills and mental agility. Whether you're a beginner easing into the genre or a seasoned expert seeking tougher trials, Karn's innovative volumes promise satisfaction and delight in every grid.