Sudoku Collection: 200 Very Hard Sudoku Puzzles 9x9
Alena Gurin · ISBN 9781076161048
Julkaistu 2020 Kieli englanti nidottu
Sudoku (also known as Number Place) is a placement puzzle. The puzzle is most frequently a 9 x 9 grid made up of 3 x 3 subgrids (called regions). Some cells already contain numb...