12 seems to be the lower limit, 80 would be trivial, 19 seems to be fairly easy.
there is no real satistics to a sudoku so unluky the are many ways to do a sudoku
There are many people that do that famous Sudoku puzzles. They can be found in the back of some magazines and near the comic section of many newspapers. The game became very popular around the year 2000.
There are over 800 Sudoku FAQ on WikiAnswers.
The total number of valid Sudoku solutions for a standard 9x9 grid is approximately 6.67 billion (or 6.67 × 10^9). However, the exact number is 6,670,903,752,021,072,936,960, which is a result of combinatorial calculations. Each configuration must adhere to the rules of Sudoku, where every row, column, and 3x3 subgrid contains the digits 1 through 9 exactly once. This immense number reflects the complexity and variety of Sudoku puzzles.
There is only one way to correctly fill a sudoku.
Sudoku puzzle collections are published as books and are also printed in some newspapers and magazines. Sudoku puzzles can be found online (try a simple "sudoku" search) and are available for download on many mobile devices.
There are theoretically an infinite number of Vortex levels. After the last stage, they let you know that the levels are being randomly generated.
want total answer possible of different sudoku 9 x 9 total amount only
If you are referring to published Sudoku puzzles, the answer is No. These are generally designed to have exactly 1 solution. That fact can sometimes help solve a Sudoku by eliminating choices that create non-unique configurations. If you are asking about possible Sudoku boards, the answer is yes - there are many more possible sudoku puzzles with multiple solutions than with unique ones. Details and examples can be found at the related link.
There are 2025 rectangles in a 9x9 grid.
billions because they are randomly generated with different stats
This Sudoku-X starts with a series of 44 empty cells.It has only 12 clues and a unique solution.