public Stone(Stone source)
{
X = source.X;
Y = source.Y;
IsBlack = source.IsBlack;
}
public bool AtPlaceOf(Stone other)
{
return(X == other.X && Y == other.Y);
}
public bool SameAs(Stone stone)
{
return(X == stone.X && Y == stone.Y && IsBlack == stone.IsBlack);
}