SSixy SudokuSixy Sudokude Peter RitmeesterEdiciones (1)Sixy Sudoku (2019)Independently Published · inglés · ISBN 9781096672340Más obras de Peter RitmeesterPPocket Posh Sixy Sudoku HardPocket Posh Sixy Sudoku HardPocket Posh Sixy Sudoku Easy to MediumNNew York Times Pocket Posh Brain Games Vol. 2New York Times Pocket Posh Brain Games Vol. 2