ISBN-13: 9781523508129 / Angielski / Miękka / 2020 / 416 str.
ISBN-13: 9781523508129 / Angielski / Miękka / 2020 / 416 str.
Our hardest-yet Sudoku collection, handcrafted by the puzzle masters at Nikoli in Japan (whose Workman Sudoku books have 1.3 million copies in print combined).