public void compTurn() {

	int choice = -1;
	boolean getChoice = true;
	
	pause(1);

	System.out.println("\n------------------------------");
	System.out.println("COMPUTER'S TURN");
	System.out.println("------------------------------");
	
	pause(1);

	int winMove =   bestColumn(_pieceC);
	int bestBlock = bestColumn(_piece);
	
	
	int randNum = (int) (Math.random() * 3);

	if ( winMove != -1 && randNum < _difficulty) {
	    choice = winMove;
	}
	else if ( bestBlock != -1 && randNum <_difficulty ) {
	    choice = bestBlock;
	}
	
	else {
	    if (randNum < _difficulty) {
	    choice = nextBestColumn( _pieceC );
	    }
	    else {
		choice = (int) (Math.random() * 7);
	    }
	}
	
	placePiece( choice + 1, _pieceC );
	System.out.println( this );
	pause(2);
	_playerT = true;
    }