Large Print Sudoku X Puzzle Book for adults – 200 Extreme Puzzles - Volume 9: Ideal for Expert Solvers – Only 2 Puzzles per Page

Welcome to the Large Print Sudoku-X Puzzle Books Series The puzzles in the "Extreme" version are ideal for expert Sudoku X solvers and those that are moving up from the "Very Hard" difficulty version. These puzzles do require advanced solving methods to complete. Each puzzle has a unique solution which can be completed using simple logic. The book size of 8.5 x 11 inches and only 2 puzzles per page provides a large, clear work area that is ideal for people with vision impairments, hand-eye co-ordination difficulties or for those that simply want an easy to view puzzle book.Please note: This is a large book and won't fit into a pocket or small bag, however, with the wide inner margins, puzzles are easy to tear out and take with you.Please read the full description to determine if this difficulty level is the right one for you. There is nothing more frustrating than purchasing a puzzle book only to find that it is either not challenging enough or too difficult to complete.Sudoku-x follows the same rules as a standard Sudoku puzzle with one exception, and that is the two diagonal lines of shaded cells that run from corner to corner. The aim of the puzzle is to fill the blank cells with the correct numbers. Each row, column, 3 x 3 box and both shaded diagonals must end up containing all of the numbers from 1 to 9. Each number can only appear once in any row, column, 3 x 3 box and shaded diagonal.200 Extreme Sudoku-X Puzzles in Large Print FormatEvery Puzzle Has a Unique SolutionAdvanced Solving is RequiredLarge 8.5 x 11 Inch Book SizeOnly 2 Puzzles per PageLarge, Clear Work Area on Quality White PaperWide Inner Margins Make it Easy to Fold the Book Open and Tear-out PagesSolutions Included at the Back of BookThe Large Print Puzzle Book series is available in the following difficulty levels: Easy, Medium, Hard, Very Hard and Extreme. All difficulty levels are available in the following formats: Sudoku, Jigsaw Sudoku, Sudoku-X and Jigsaw Sudoku-XHow the Puzzles are graded:Difficulty levels are determined by the complexity of the methods used to deduce the correct solution: Each level (Hard, Very Hard & Extreme) necessitates a mode of deduction which was not required in the previous level. The "Easy" and "Medium" Difficulty levels require no advance solving techniques, however, in the "Easy" level, there will always be one or more cells that can be filled-in by scanning rows and columns, whereas, in the "Medium" level there is sometimes only one cell that can be filled-in at any one time.Easy: Ideal for beginners or those that simply want a very easy to solve Sudoku-X puzzle. No Advanced solving techniques requiredMedium: A little more challenging than the "Easy" difficulty level. You may have to check a lot of rows, and columns before finding a cell that can be filled in. As with the "Easy" difficulty puzzles, advanced solving techniques are not required.Hard: The "Hard" difficulty level puzzles do require some advanced solving methods to be employed. These puzzles are more suited to those learning to use more complex deduction processes and moderately experienced Sudoku-X puzzle solvers.Very Hard: The "Very Hard" series is one step up from the "Hard" level, forcing the solver to use more complex deduction methods. This level is definitely one for the more experienced solvers and the Sudoku-X fanatic.Extreme: As the difficulty level suggests, these puzzles are extremely difficult to complete. Unless you are an expert Sudoku-X solver, these puzzles may be too hard for you.