The book contains 200 excellent puzzles 6x6 at the level Medium to Hard. Medium puzzles 100, Hard puzzles 100. -All riddles have only 1 solution. -2 puzzles per page. -The font size is correct you will not have to strain your eyes when solving puzzles. -High quality paper and print (all puzzles read well, easy to write with pen and pencil without worry of bleed-through). 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 5 x 5. The objective is to place the numbers 1 to 5 (or whatever the dimensions are) in each row, ensuring that each column also only contains the digits 1 to 5. 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.
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