Download or read book Mini Sudoku Puzzles - 400 Hard 6x6 written by Alexander Rodriguez and published by Createspace Independent Publishing Platform. This book was released on 2018-10-10 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Each puzzle consists of a 6x6 grid containing given clues in various places. The object is to fill all empty squares so that the numbers 1 to 6 appear exactly once in each row, column and 3x2 box.