Suguru puzzle book for Adults: 200 Medium to Hard Puzzles 9x9 (Volume 2)

Suguru puzzle book for Adults: 200 Medium to Hard Puzzles 9x9 (Volume 2)

The book contains 200 excellent Suguru puzzles 9x9. 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). Suguru, also known as Tectonics or Number Blocks, is a Japanese puzzle invented by Naoki Inaba. The goal is to fill a given rectangular grid with numbers, so that every designated area contains a sequence of non-repeating, consecutive numbers, starting from 1 and going up. Also, adjacent (touching) cells should not contain the same number, even diagonally.