Numbers 1 through 21 are solved. The rest are in good condition. It is possible to erase them to some extent with an eraser, so please comment if you wish. A Sudoku puzzle book for intermediate players, containing 116 pages. - Title: Intermediate Sudoku 314 Problems Vol. 3 - Publisher: Cosmic Publishing - Price: 510 yen - Number of pages: 116 pages - Difficulty: Intermediate - Size: Handy size Thank you for looking.