NOT KNOWN FACTUAL STATEMENTS ABOUT FUTOSHIKI

Futoshiki (a literal translation could be 'not equal') is a Japanese puzzle that are available in several countrywide newspapers and made its first look in Saturday editions of 'The Guardian'. Puzzles come in different sizes. In a 5x5 grid, the digits 1-5 ought to show up in Just about every row and column. In a very 7x7 grid, the digits one-seven