A SIMPLE KEY FOR FUTOSHIKI UNVEILED

Futoshiki (a literal translation could well be 'not equivalent') is a Japanese puzzle that can be found in various countrywide newspapers and built its to start with appearance in Saturday editions of 'The Guardian'. Puzzles come in numerous sizes. Inside a 5x5 grid, the digits 1-5 need to show up in Every row and column. Inside of a 7x7 grid, the