HHyper Sudoku XHyper Sudoku Xde Peter RitmeesterEdiciones (1)Hyper Sudoku X (2019)Independently Published · inglés · ISBN 9781687121387Más 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