4 Types of Sudoku Puzzles of a Very Difficult Level. 400 Collection Puzzles.: Lighthouse Battleship - Yajilin - Calcudoku - Tridoku. Holmes Presents the Sudoku Book of Hard Puzzles for Mental Acuity. (Plus 500 Puzzles That Can Be Printed). (Ultimate Classic Sudoku, #5)

by Basford Holmes

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  • ISBN10 179520432X
  • ISBN13 9781795204323
  • Publish Date 26 January 2019
  • Publish Status Active
  • Imprint Independently Published
  • Format Paperback (US Trade)
  • Pages 106
  • Language English