//Puzzle 2 using loshu_puzzle2.txt. The object will be filled, displayed,
//and then tested to see if it is a valid solution
cout << "Puzzle 2:" << endl << endl;
//Puzzle 3 using loshu_puzzle3.txt. The object will be filled, displayed,
//and then tested to see if it is a valid solution
cout << "Puzzle 3:" << endl << endl;
//Puzzle 4 using loshu_puzzle4.txt. The object will be filled, displayed,
//and then tested to see if it is a valid solution
cout << "Puzzle 4:" << endl << endl;