Futoshiki: 250 Medium Challenging Logic Puzzles 9x9 (Paperback) (ISBN-13: 9781728719023)

250 Medium Challenging Logic Puzzles 9x9.Futoshiki (from Japanese, literally "not equal"; also known as "Hutoshiki," "Unequal") is a logic puzzle. The puzzle is played on a square grid, such as 9 x 9. The objective is to place the numbers 1 to 9 (or whatever the dimensions are) in each row, ensuring that each column also only contains the digits 1 to 9. Some digits may be given at the start. In addition, inequality constraints are also initially specifed between some of the squares, such that one must be higher or lower than its neighbour. These constraints must be honoured as the grid is filled out.

Author: Mindful Puzzle Books
ISBN-10: 172871902X
ISBN-13: 9781728719023
Publisher: Independently Published
Language: English
Published: 10/12/2018
Pages: 146
Format: Paperback
Weight: 0.45lbs
Size: 9.00h x 6.00w x 0.31d