The World's Most Difficult Sudoku Only Play if You're an Expert with 200+ Very Hard Puzzles

by Puzzle Therapist

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  • ISBN10 1541941659
  • ISBN13 9781541941656
  • Publish Date 20 September 2017
  • Publish Status Active
  • Imprint Puzzle Therapist
  • Format Paperback (US Trade)
  • Pages 144
  • Language English