Sudoku - 200 Hard Puzzles 9X9 (Volume 23)

Sudoku (originally called Number Place) is a logic-based combinatorial number-placement puzzle. The objective is to fill a 9?9 grid with digits so that each column, each row, and each of the nine 3?3 subgrids that compose the grid (also called "boxes", "blocks", "regions", or "subsquares") contains all of the digits from 1 to 9. The puzzle setter provides a partially completed grid, which for a well-posed puzzle has a unique solution.

• | Author: Dart Veider
• | Publisher: CreateSpace Independent Publishing Platform
• | Publication Date: Feb 01, 2017
• | Number of Pages: 120 pages
• | Language: English
• | Binding: Paperback
• | ISBN-10: 1542850207
• | ISBN-13: 9781542850209