2 puzzles for 1 page. Sudoku is conveniently located. There is free space for records, decisions, and notes. Every answer is checked and is at the end of the book. The very large stock of classic Sudoku puzzles. A lot of puzzles for everyone. Develops memory, logical thinking, helps with concentration. Sudoku is useful at any age for developing mental abilities and maintaining them in perfect condition. Sudoku 9x9, separated by smaller squares of 3x3 cells. The entire playing field consists of 81 cells. It is required to fill empty cells with numbers from 1 to 9, each of the digits should appear only once in each row, column, and 3x3 square. An excellent book for free time pastime and mind training. Presented 225 pages. Format 8'' x 10 ''. I hope you will enjoy my book. I would also really appreciate it if you could write a review. Thank you. Best regards, Andrii Pitenko