3365 Hard Sudoku Puzzles365 Hard Sudoku Puzzlesde Terry MurphyEdiciones (1)365 Hard Sudoku Puzzles (2016)CreateSpace Independent Publishing Platform · inglés · ISBN 9781530021826Más obras de Terry MurphyRRod Wilson's ChallengeRod Wilson's ChallengeBBorrowing HopeBorrowing HopeSudoku for Seniors : 100 Large Print Hard Puzzles