London, UK. July 7th, 2025 – Raja, also known as A. Rajathilagam, is proud to announce the release of Cross Number Puzzle (Book 1). This first volume in a planned series delivers fresh variety to puzzle lovers everywhere with a carefully curated collection of fifty cross number challenges. From simple four-number sums designed to ease newcomers into the format to multi-step grids that stretch logic and arithmetic skills to their limits, every page offers a new way to keep the mind sharp and engaged.
Unlike traditional word-based puzzles, cross number puzzles focus entirely on numerical reasoning. Each diagram asks the solver to fill in distinct numbers so that every shape totals the same sum. Early puzzles rely on basic addition, making them accessible and perfect for families, students, and teachers who want to introduce logical thinking in a fun and rewarding way. As the book progresses, the puzzles increase in complexity, introducing multi-directional clues that require planning ahead and testing different strategies. This structured progression helps readers strengthen number sense, improve memory, and develop problem-solving confidence with each completed grid.
Raja’s lifelong fascination with number patterns began during his school days. He remembers spending hours experimenting with magic squares and mental calculations long before the convenience of calculators and smartphones made arithmetic so easy. This early love for patterns and logic inspired him to design puzzles that are not only challenging but also visually appealing. The book’s designs include animal outlines, geometric shapes, and creative patterns that encourage users to slow down, examine the grid carefully, and work persistently until every circle is correctly filled. Each puzzle comes with a full solution to reduce frustration and help solvers check their work or learn new approaches.
The book is also an ideal resource for newspapers, magazines, and other publishers looking to license engaging, accessible content for their readers. Since the puzzles use only numbers, they are language-neutral and can be easily adapted for publication in any country. Organisations can choose to license individual puzzles or the entire collection to enhance their entertainment offerings and provide readers with a fresh, challenging pastime that goes beyond standard crosswords and sudoku.
Cross Number Puzzle (Book 1) is available now in paperback and hardcover format on Amazon: https://amzn.eu/d/4O4P8En.Â
About the Author
A. Rajathilagam has been creating numerical puzzles for more than thirty years. His deep passion for logical deduction and pattern recognition inspired this unique collection, offering thoughtful challenges that reward persistence and creativity.
A. Rajathilagam has been creating numerical puzzles for more than thirty years. His deep passion for logical deduction and pattern recognition inspired this unique collection, offering thoughtful challenges that reward persistence and creativity.
ENDS