HPCL - The Sudoku was most likely designed anonymously by Howard Garns, a 74-year-old retired architect and freelance puzzle constructor from Indiana, and was published as Number Place, the earliest known examples
![Sudoku: Combinatorics, Puzzle, Will Shortz, Howard Garns, Asahi Shimbun, Pentomino, Heptomino, World Puzzle Championship, Kakuro, Verbal Arithmetic : Surhone, Lambert M., Timpledon, Miriam T., Marseken, Susan F.: Amazon.com.au: Books Sudoku: Combinatorics, Puzzle, Will Shortz, Howard Garns, Asahi Shimbun, Pentomino, Heptomino, World Puzzle Championship, Kakuro, Verbal Arithmetic : Surhone, Lambert M., Timpledon, Miriam T., Marseken, Susan F.: Amazon.com.au: Books](https://m.media-amazon.com/images/I/71rdsn5cVDL._AC_UF894,1000_QL80_.jpg)
Sudoku: Combinatorics, Puzzle, Will Shortz, Howard Garns, Asahi Shimbun, Pentomino, Heptomino, World Puzzle Championship, Kakuro, Verbal Arithmetic : Surhone, Lambert M., Timpledon, Miriam T., Marseken, Susan F.: Amazon.com.au: Books
![Looking back: Sudoku game known worldwide developed by Connersville's Howard Garns | News | newsexaminer.com Looking back: Sudoku game known worldwide developed by Connersville's Howard Garns | News | newsexaminer.com](https://bloximages.newyork1.vip.townnews.com/newsexaminer.com/content/tncms/assets/v3/editorial/a/e8/ae889c92-9e99-58cd-8311-ae674a310703/6314ca571c484.image.jpg?crop=865%2C454%2C0%2C381&resize=865%2C454&order=crop%2Cresize)