private void objectsInicialization()
{
GM = new PuzzleMatrix(Level);
Boxes = new Box[Level * Level];
Won = false;
bestTime = -1;
solvingTime = 0;
}
private void showSolvePuzzle()
{
GM = new PuzzleMatrix(Level);
Boxes = new Box[Level * Level];
bestTime = -1;
solvingTime = 0;
updateForm();
}