You can find some sudoku grid in /sudoku_grid/
Execution time with my program :
- sudoku_easy :
0.000000s - sudoku_medium :
0.000000s - sudoku_hard :
12.000000s// optimize in progress - sudoku_random :
0.000000s - 'most_difficult_sudoku_in_world' :
0.000000s// publish in 2006
run on Linux
gcc -o main main.c./main sudoku_grid/sudoku_{level}.txt// for your own file./a.exe --random// random grid and resolve itself
run on Windows(Cygwin64)
g++ -std=gnu++11 main.c./a.exe sudoku_grid/sudoku_{level}.txt// for your own file./a.exe --random// random grid and resolve itself