53151086
9781729062906
Basford Holmes is the author of 'Сlassic 400 + Killer sudoku 12 x 12: Holmes presents a logical puzzle book with proven Sudoku. Sudoku Easy, Medium, Hard and Very hard levels. (plus ... be printed). (Killer classic Sudoku 12x12)', published 2018 under ISBN 9781729062906 and ISBN 1729062903.
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