Sudoku Collection : 200 Hard Chain Sudoku Puzzles 9X9

Chain Sudoku consists of a group of circles arranged in a square grid and containing given clues in various places. The object is to fill all empty circles so that the digits appear exactly once in each row, column and chain.

• | Author: Alena Gurin
• | Publisher: Independently Published
• | Publication Date: Sep 07, 2019
• | Number of Pages: 122 pages
• | Language: English
• | Binding: Paperback
• | ISBN-10: 1691599522
• | ISBN-13: 9781691599523