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Unveiling the World of Ethical Hacking

This post is part of series of blog posts investigating different impacts of UK legislation relevant to Computer Science with a particular focus on:

  • Data Protection Legislation
  • Intellectual Property Protection (incl. Copyright and Trade Marks legislation)
  • Computer Misuse Act (1990)

Unveiling the World of Ethical Hacking

In an era dominated by digital landscapes, where data is the new currency, the importance of securing sensitive information cannot be overstated. As cyber threats continue to evolve, organisations and individuals alike are turning to ethical hacking as a proactive approach to safeguarding their digital assets. Ethical hacking, also known as penetration testing or white-hat hacking, involves authorised individuals who use their hacking skills to identify vulnerabilities in computer systems, networks, and applications. This proactive approach plays a crucial role in safeguarding sensitive information, thwarting cyber threats, and ultimately securing the digital infrastructure. In this article, we will explore the fascinating realm of ethical hacking, its key objectives, its legal framework and the challenges it faces.

The Essence of Ethical Hacking:

Ethical hackers, often referred to as “white hats,” operate with a clear mandate: to identify and rectify security vulnerabilities before malicious hackers exploit them. These professionals use the same techniques as their nefarious counterparts but apply their skills in an authorised and responsible manner. The objective is not to compromise security but to strengthen it by identifying weaknesses and recommending effective countermeasures.

Key Objectives of Ethical Hacking:

  • Identifying Vulnerabilities:
    Ethical hackers meticulously analyse computer systems, networks, and applications to identify potential vulnerabilities. This involves probing for weak points that could be exploited by cybercriminals to gain unauthorised access or compromise data integrity.
  • Assessing Security Measures:
    Beyond pinpointing vulnerabilities, ethical hackers evaluate the effectiveness of existing security measures. This includes examining firewalls, encryption protocols, access controls, and other defense mechanisms to ensure they are robust and capable of withstanding cyber attacks.
  • Providing Recommendations:
    Once vulnerabilities are identified and security measures are assessed, ethical hackers play a crucial role in providing actionable recommendations. These suggestions help organisations patch weaknesses, strengthen their security posture, and stay ahead of emerging threats.

The Legal and Ethical Framework:

Ethical hacking is conducted within a legal and ethical framework, with strict guidelines to ensure that the process remains transparent, authorised, and aligned with the organisation’s goals. Prior consent is obtained, and the scope of the penetration testing is clearly defined to avoid unintentional disruptions to business operations.

Importantly, ethical hackers must adhere to ethical standards, ensuring that they respect privacy, confidentiality, and the law during the course of their assessments. Violating these principles could lead to legal consequences and damage the professional reputation of the ethical hacker and the organisation they represent.

Challenges and Opportunities:

Ethical hacking faces its own set of challenges, including staying abreast of rapidly evolving cyber threats, understanding complex technologies, and adapting to new methodologies. However, these challenges also present opportunities for continuous learning and innovation within the field.

As the digital landscape expands, ethical hackers are finding new avenues to contribute to cybersecurity. From securing Internet of Things (IoT) devices to addressing cloud security concerns, ethical hacking has become an indispensable tool in the fight against cybercrime.

Conclusion:

In a world where digital threats are omnipresent, ethical hacking emerges as a beacon of light, providing a proactive and strategic approach to cybersecurity. By identifying vulnerabilities, assessing security measures, and offering recommendations, ethical hackers play a pivotal role in fortifying the digital realm.

As organisations increasingly recognise the value of ethical hacking, these cybersecurity heroes will continue to evolve and adapt, ensuring that our digital infrastructure remains resilient in the face of ever-growing cyber threats. Ethical hacking is not just a profession; it is a commitment to securing the future of the digital world.


Disclaimer
This article was generated with the help of ChatGPT, an artificial intelligence language model developed by OpenAI, and is provided for educational purposes. The content is created based on general knowledge and may not be fully accurate. It is not intended to be a substitute for professional advice.
Question 1[2 marks]

What is the primary goal of ethical hacking, and how does it differ from malicious hacking?




Question 2[2 marks]

How do ethical hackers contribute to cybersecurity, and what key objectives do they focus on during their assessments?




Question 3[2 marks]

Describe the legal and ethical framework within which ethical hacking operates. What precautions must ethical hackers take to ensure compliance with these standards?




Question 4[2 marks]

What challenges do ethical hackers face, and how do these challenges provide opportunities for growth and innovation in the field?




Question 5[2 marks]

From your own knowledge, what other forms of preventive approaches can organisation use to protect their IT systems from hacking attempts?





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Mickey Mouse Enters the Public Domain

This post is part of series of blog posts investigating different impacts of UK legislation relevant to Computer Science with a particular focus on:

  • Data Protection Legislation
  • Intellectual Property Protection (incl. Copyright and Trade Marks legislation)
  • Computer Misuse Act (1990)

A Historic Moment: Mickey Mouse Enters the Public Domain
Introduction:

In a groundbreaking development that has captured the attention of fans, legal experts, and cultural enthusiasts alike, the iconic character Mickey Mouse has officially entered the public domain. For decades, Mickey Mouse has been a symbol of entertainment and childhood joy, and this transition marks a historic moment in intellectual property and copyright law.

The Journey of Mickey Mouse:

Created by Walt Disney and Ub Iwerks, Mickey Mouse made his debut in the animated short film “Steamboat Willie” in 1928. Since then, he has become a cultural phenomenon, representing the magic of Disney and captivating audiences worldwide. The lovable mouse has starred in numerous films, television shows, and theme park attractions, becoming a beloved symbol for generations.

Mickey Mouse – Steamboat Willie – 1928 – Public Domain

The Copyright Extension:

In the United States, copyright laws have been repeatedly extended over the years, preventing many iconic characters, including Mickey Mouse, from entering the public domain. The Copyright Term Extension Act of 1998, often referred to as the “Mickey Mouse Protection Act,” extended copyright protection for works created after January 1, 1978, to 70 years after the death of the creator. This legislation aimed to protect the intellectual property rights of creators and their families but also raised concerns about stifling creativity and limiting the public’s access to cultural works.

The 2024 Milestone:

The year 2024 marks a significant turning point as Mickey Mouse finally enters the public domain. This means that the character’s original incarnation, as seen in “Steamboat Willie,” is now free for public use, allowing artists, filmmakers, and creators to explore and reimagine Mickey in new and innovative ways.

Impact on Creativity:

With Mickey Mouse in the public domain, artists and creators have the freedom to incorporate the iconic character into their works without fear of copyright infringement. This newfound accessibility is expected to inspire a wave of creative reinterpretations, fan art, and cultural adaptations. From animated shorts to graphic novels, the possibilities for new Mickey Mouse content are vast.

Preserving the Legacy:

While the character’s original iteration is now free for creative exploration, it’s important to note that later versions and adaptations of Mickey Mouse, as well as other Disney characters, remain under copyright protection. The preservation of the original works ensures that the essence of the characters is maintained, while also allowing for fresh and transformative perspectives.

Conclusion:

The entry of Mickey Mouse into the public domain marks a historic and momentous occasion in the world of intellectual property. As creators embark on new adventures with this beloved character, the legacy of Mickey Mouse is sure to live on, continuing to bring joy and inspiration to audiences for generations to come. While the copyright landscape may be evolving, the magic of Mickey Mouse remains timeless.


Disclaimer
This article was generated with the help of ChatGPT, an artificial intelligence language model developed by OpenAI, and is provided for educational purposes. The content is created based on general knowledge and may not be fully accurate. It is not intended to be a substitute for professional advice.
Question 1[2 marks]

In what year did Mickey Mouse officially enter the public domain, and why is this considered a historic moment in intellectual property and copyright law?




Question 2[2 marks]

What is the “Mickey Mouse Protection Act,” and how did it impact the duration of copyright protection for characters like Mickey Mouse?




Question 3[2 marks]

How does the article suggest that the entry of Mickey Mouse into the public domain may inspire new forms of creative expression and artistic reinterpretations?




Question 4[2 marks]

What was the significance of the Copyright Term Extension Act of 1998, and how did it impact iconic characters like Mickey Mouse?




Question 5[2 marks]

Despite Mickey Mouse entering the public domain, what important caveat does the article mention about later versions and adaptations of the character, as well as other Disney characters?





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The Hyperlink Patent Case and the Copyright, Designs and Patents Act

This post is part of series of blog posts investigating different impacts of UK legislation relevant to Computer Science with a particular focus on:

  • Data Protection Legislation
  • Intellectual Property Protection (incl. Copyright and Trade Marks legislation)
  • Computer Misuse Act (1990)

BT’s Hyperlink Patent: Navigating the Legal Landscape of Innovation
Introduction:

In the fast-paced world of technology, innovation often comes hand in hand with legal battles over intellectual property. One such recent case revolves around BT (British Telecommunications plc) and its claim of a Hyperlink Patent. This claim has sparked discussions about the intricacies of intellectual property law, particularly under the Copyright, Designs, and Patents Act. In this article, we delve into the details of BT’s Hyperlink Patent claim and explore its implications within the legal framework.

The Hyperlink Patent:

BT’s claim to a patent related to hyperlinks raises eyebrows in the tech community. Hyperlinks, fundamental to the functioning of the World Wide Web, are widely considered to be a basic element of online communication. However, BT contends that it holds a patent on a specific aspect of hyperlink technology, leading to concerns about potential repercussions for innovation and competition in the digital space.

The patent in question reportedly involves a method for managing and accessing web content through hyperlinks, with BT asserting that it holds exclusive rights to this technology. Critics argue that such a claim could stifle innovation by limiting the use of an essential web element that has been freely used for decades.

The Copyright, Designs, and Patents Act:

To understand the legal implications of BT’s Hyperlink Patent claim, we turn to the Copyright, Designs, and Patents Act (CDPA) of the United Kingdom. The CDPA is a comprehensive piece of legislation that governs intellectual property rights in the country, covering copyrights, designs, and patents.

Patents under Copyright, Designs and Patents Act:
The Copyright, Designs and Patents Act grants patent rights to inventors for new and inventive technical solutions to problems. Patents provide exclusive rights to the patent holder for a limited period, allowing them to control the use of the patented invention. However, patents must meet certain criteria, including novelty, inventive step, and industrial applicability.

Prior Art and Obviousness:
One crucial aspect in patent law is the consideration of prior art. If an invention is not novel or is deemed obvious based on existing knowledge or technology, it may not be eligible for patent protection. This principle is particularly relevant in the context of BT’s Hyperlink Patent claim, as the concept of hyperlinks has been in widespread use since the early days of the internet.

Legal Challenges and Disputes:
The Copyright, Designs and Patents Act also provides a framework for legal challenges to patents. If a party believes that a patent is invalid or has been wrongly granted, they can seek revocation through legal proceedings. This opens the door for potential legal battles regarding the validity of BT’s Hyperlink Patent.

Implications for Innovation:

The controversy surrounding BT’s Hyperlink Patent claim raises broader questions about the balance between encouraging innovation and protecting intellectual property. While patents are essential for fostering innovation by providing inventors with incentives, overly broad or questionable patents can hinder competition and stifle progress.

The technology industry thrives on open collaboration and the sharing of ideas. If BT’s claim is upheld, it may set a precedent that challenges the longstanding practice of freely using hyperlinks. This, in turn, could have a chilling effect on innovation, as companies may become more hesitant to develop new technologies for fear of infringing on patents.

Conclusion:

The intersection of technology and intellectual property law is a complex and evolving landscape. BT’s Hyperlink Patent claim brings attention to the delicate balance between protecting inventors’ rights and fostering innovation. As legal proceedings unfold, the tech community watches closely, aware that the outcome could have far-reaching implications for the future of hyperlink technology and beyond.


Disclaimer
This article was generated with the help of ChatGPT, an artificial intelligence language model developed by OpenAI, and is provided for educational purposes. The content is created based on general knowledge and may not be fully accurate. It is not intended to be a substitute for professional advice.
Question 1[2 marks]

What is BT claiming to have a patent for, and why are people concerned about it?




Question 2[2 marks]

How does the Copyright, Designs and Patents Act (CDPA) relate to BT’s Hyperlink Patent claim?




Question 3[2 marks]

What are the main conditions an invention must meet to get patent protection under the Copyright, Designs and Patents Act?




Question 4[2 marks]

According to the article, why are some people worried about the impact of BT’s patent claim on innovation in the tech industry?




Question 5[2 marks]

Can you explain what “prior art” means in the context of patent law and why it’s important for the discussion about BT’s Hyperlink Patent?





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The Cadbury Ruling: Can Colours be Trademarks in the UK?

This post is part of series of blog posts investigating different impacts of UK legislation relevant to Computer Science with a particular focus on:

  • Data Protection Legislation
  • Intellectual Property Protection (incl. Copyright and Trade Marks legislation)
  • Computer Misuse Act (1990)

The Cadbury Ruling: Can Colours be Trademarks in the UK?

Introduction:

In the world of trademarks, protecting brand identity is a crucial aspect of business strategy. Traditionally, trademarks have been associated with distinctive logos, names, and symbols. However, in recent years, the question of whether it is possible to trademark a colour has emerged as a fascinating and contentious legal issue. One of the most notable cases in this arena is the Cadbury case, where the confectionery giant sought to trademark a specific shade of purple. This landmark case has ignited discussions on the scope and limitations of colour trademarks in the UK.

The Cadbury Case:

In 2012, Cadbury was granted permission to register a trademark on a specific shade of purple (Pantone 2685c) that they used on several of their packaging for their chocolate confectionery. However, Nestlé, a competitor of Cadbury, opposed this registration, arguing that the colour purple lacked the distinctiveness required for trademark protection. Nestlé won this appeal which meant that Cadbury lost the battle to secure rights over the colour.

Can Colours be Trademarks?

The question of whether colours can be trademarks is not a straightforward one. Traditionally, trademarks were associated with words, logos, and symbols, but the evolving nature of business and branding has led to a broader interpretation of what can be considered a distinctive identifier.

In the Cadbury case, the court acknowledged that colours, in principle, can function as trademarks if they meet the distinctiveness requirement. However, the challenge lies in establishing that a specific colour has acquired distinctive character through use in the marketplace.

Distinctiveness and Acquired Character:

The distinctive character of a colour is crucial for its eligibility as a trademark. In the Cadbury case, the court held that Cadbury’s use of the purple colour had not acquired sufficient distinctiveness, and therefore, it could not be registered as a trademark. The court emphasized the need for evidence demonstrating that the colour had become associated exclusively with Cadbury’s products in the minds of consumers.

Practical Implications:

The Cadbury ruling has significant implications for businesses seeking to protect their brand colours in the UK. To successfully register a colour as a trademark, companies must provide compelling evidence of the colour’s association with their products in the eyes of consumers. This may include long-term and extensive use of the colour in advertising, packaging, and marketing materials.

Conclusion:

While the Cadbury ruling established that colours can, in principle, be registered as trademarks in the UK, the distinctiveness requirement poses a significant challenge for businesses. Companies must carefully consider the evidence they present to establish the acquired character of a colour in the marketplace. As the landscape of trademark law continues to evolve, the Cadbury case serves as a benchmark, shaping the boundaries of what can be considered a distinctive and protectable trademark in the realm of colours.


Disclaimer
This article was generated with the help of ChatGPT, an artificial intelligence language model developed by OpenAI, and is provided for educational purposes. The content is created based on general knowledge and may not be fully accurate. It is not intended to be a substitute for professional advice.
Question 1[2 marks]

What is the primary purpose of trademarks, and why are they essential in the business world?




Question 2[2 marks]

What did Cadbury want to register as a trademark in the UK, and why did they face a challenge?




Question 3[2 marks]

Why is having distinctive character important for a colour to be registered as a trademark, according to the article?




Question 4[2 marks]

What was the court’s decision about the purple colour in the Cadbury case, and what did they say about the evidence needed for trademark registration?




Question 5[2 marks]

What should businesses consider, according to the article, if they want to register colours as trademarks in the UK after the Cadbury ruling?





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The Salami Hack & the Computer Misuse Act Legislation

This post is part of series of blog posts investigating different impacts of UK legislation relevant to Computer Science with a particular focus on:

  • Data Protection Legislation
  • Intellectual Property Protection (incl. Copyright and Trade Marks legislation)
  • Computer Misuse Act (1990)

The Salami Hack: Unveiling Cybersecurity Threats and the Relevance of the Computer Misuse Act in the UK

Introduction

In the ever-evolving landscape of cyber threats, a peculiar and insidious method has emerged, known as the “Salami Hack.” This sophisticated cyberattack involves stealing small, seemingly inconsequential slices of data over an extended period, eventually accumulating valuable information or causing significant damage. As authorities and cybersecurity experts grapple with the implications of such attacks, the Computer Misuse Act in the United Kingdom plays a crucial role in addressing and preventing cybercrime.

Understanding the Salami Hack

The Salami Hack, also referred to as “salami slicing” or “slice-of-salami” attacks, is a methodical and patient approach to data theft or manipulation. Instead of conducting a large-scale breach, hackers discreetly compromise systems by taking tiny increments of data over time, making it challenging for victims to detect the breach immediately. The stolen data might include sensitive information, financial details, or intellectual property.

This method often involves exploiting vulnerabilities in network security, leveraging social engineering tactics, and deploying malware to remain undetected for extended periods. The cumulative effect of these seemingly minor intrusions can be devastating, as hackers gradually assemble a comprehensive picture of the target’s confidential information.

An alternative use of the salami approach is the salami embezzlement technique, a form of financial fraud where perpetrators make imperceptible transactions or transfers over an extended period of time. These seemingly negligible financial transactions (sometimes as low as transferring a few pennies from a huge range of accounts) collectively accumulate to substantial financial gains for the fraudster, often escaping immediate detection: Victims of this type of fraud may not notice the negligible loss incurred or may decide not to report it as it may seem negligible.

Relevance of the Computer Misuse Act

The Computer Misuse Act 1990 is the cornerstone of cybersecurity legislation in the United Kingdom, addressing unauthorized access, modification, or interference with computer systems. In the context of the Salami Hack, several provisions within the Act become particularly relevant:

Unauthorized Access (Section 1): The Salami Hack typically involves unauthorized access to computer systems. Section 1 of the Computer Misuse Act makes it an offense to gain access to a computer system without permission. This provision is crucial for prosecuting hackers engaged in salami slicing activities.

Unauthorized Modification (Section 3): If the Salami Hack includes unauthorized modifications to computer data or systems, Section 3 of the Act becomes applicable. This provision criminalizes unauthorized actions that cause damage or disruption to computer material.

Making, Supplying, or Obtaining Anything for Use in Offenses (Section 3A): Those who create or distribute tools, malware, or any other resources for the purpose of committing cybercrimes, including salami slicing attacks, may be prosecuted under this section.

Jurisdiction and Extradition (Section 9): The Act also addresses the issue of jurisdiction, allowing the UK authorities to prosecute individuals involved in cybercrime, even if the offenses occur outside the country. Extradition arrangements further strengthen the ability to bring cybercriminals to justice.

Penalties under the CMA

The CMA stipulates severe penalties for offenses related to computer misuse. Depending on the severity of the crime, individuals found guilty of salami embezzlement could face imprisonment, fines, or both.

Challenges and Future Considerations

Despite the effectiveness of the Computer Misuse Act, addressing cyber threats like the Salami Hack poses ongoing challenges. The rapid evolution of technology requires continuous updates to legislation, as well as international collaboration to combat cybercrime effectively.

Enhancing cybersecurity measures, fostering public-private partnerships, and promoting awareness about evolving threats are essential components of a comprehensive strategy to safeguard against the Salami Hack and other sophisticated cyberattacks. As technology advances, so must the legal frameworks designed to protect individuals, businesses, and governments from the ever-present threat of cybercrime.


Disclaimer
This article was generated with the help of ChatGPT, an artificial intelligence language model developed by OpenAI, and is provided for educational purposes. The content is created based on general knowledge and may not be fully accurate. It is not intended to be a substitute for professional advice.
Question 1[2 marks]

What is the Salami Hack, and how does it differ from traditional cyberattacks?




Question 2[2 marks]

Explain the concept of “thinly sliced” transactions in the context of salami embezzlement. How does this incremental approach contribute to the difficulty of detecting and preventing such cybercrimes?




Question 3[4 marks]

Explain the significance of the Computer Misuse Act in the context of the Salami Hack. Which specific sections of the Act are relevant to addressing such cyber threats?




Question 4[2 marks]

What are the potential penalties individuals might face under the Computer Misuse Act if found guilty of offenses related to salami embezzlement?





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The Library – Entity Relationship Diagram (ERD)

Your local library would like you to design a new system to store information about all the books available on the shelves, as well as about the members of the library and the borrowings and reservations they make.

The requirements of this library are as follows:

    The new system will need to store information about the books, their authors and genres (e.g. Adventure, Romance, Crime….).​
    Each book will be associated to one genre only.​
    Each book can have one or more author.​
    The new system will also need to store information about library members, reservations and borrowings.​
    Members of the library can make as many borrowings as they want. Each borrowing is for one book only.​
    When a borrowing is made, the librarian will record the date of the borrowing and the returned date.​
    When a book is returned, the librarian will update the borrowing status to “Returned”.​
    When a book is not available, a member can make a reservation.​
    Members can make as many reservations as they want. A reservation is for one book only.​

Use our online ERD tool to design the Entity Relationship Diagram for this library. Note that you have not been given any information about the pieces of information to store about the books, authors, borrowings and reservations so you will have to decide of the most relevant fields to include on your ERD.

Design Your ERD Online

For more information about relational databases and Entity Relationship Diagrams, visit the following pages:

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Candy Crush – Level Generation

In this Python challenge we will complete an algorithm to generate the 9×9 grid of candies used in the game Candy Crush.

In the game of Candy Crush, 81 candies are displayed using 9 rows of 9 candies. There are 6 different candies of different shapes and colours.

To implement this game, we will be using a 2D array of integer values. Each value be stored as an integer between 1 and 6. We will also use 6 different pictures of sweets so that we can render the grid by replacing the numbers stored with their corresponding picture.

Here is our 2D array matching the above Candy Crush grid:

grid = [[1,2,3,4,6,2,5,1,3],
        [5,2,6,4,5,6,1,2,3],
        [4,1,1,3,3,6,2,4,5],
        [2,3,4,1,5,1,6,4,1],
        [5,5,3,2,1,4,3,2,2],
        [1,3,6,2,5,5,1,4,4],
        [6,1,6,3,4,6,6,3,6],
        [4,6,4,2,3,4,2,5,3],
        [4,5,1,1,3,5,2,4,6]]

Python Code so far…

Task 1: Generating a Random Grid

The code provided above will always generate the same starting grid. Your task is to add some code to randomise the grid so that each of the 81 cells of the grid contains a random integer value between 1 and 6. The following flowchart will help you implement this code.

Task 2: Identifying and Removing Blocks

In the game Candy Crush, every time a block of 3 or more adjacent candies of the same type in a row or in a column is detected, it is automatically removed from the grid. Your second task consists of detecting if the grid that was randomly generated (task 1) contains any blocks of 3 adjacent candies, and if so replace these candies.

In order to identify blocks of at least 3 adjacent candies, we can search for any candy on the grid which has two candies of the same type on either side (left and right) or above and below.

Let’s see how we can identify a block of three in a row:

Let’s see how we can identify a block of four in a column:

Once a block has been identified, we can break it by replacing either all three candies or by simply replacing the candy in the middle position. Not that in the game of Candy Crush, when a candy is removed, the candies above fall down to fill up the empty space and a new candy is generated at the top of the grid. However, we do not need to implement this at this stage, as we are only working on generating a valid start up grid that does not contain any block of 3 or more candies of the same type.

Let’s investigate the algorithm needed to detect and remove any block of three adjacent candies using the following flowchart:

Your task is to implement the above flowchart within the Python code provided above. Once done, all generated grids should not contain any blocks of 3 or more adjacent candies of the same type.

Extension Task

Now that thew grid is ready, we could ask the user to enter a row and column number of the candy they would like to remove. From there, we should implement the rules of the Candy Crush game to drop new candies from the top and see when a block has been created and should hence be removed from the grid.

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Snakes and Ladders using Python

Snakes and ladders is a board game for two or more players and is played worldwide. It originated in ancient India as “Moksha Patam”, and was brought to the UK in the 1890s. It is a race game where each player progresses through the 100 numbered cells of the board by rolling a dice. When a player lands at the bottom of the ladder, they can automatically move their token to the top of the ladder. However, when a player lands in the mouth of a snake, they slide down to the tail of the snake.
Snakes and Ladders
The first player to reach the last cell of the board (cell 100), they win. However they have to land exactly on this cell. If they reach a number higher than 100, then their token bounce back. For instance, if a player is on cell 98 and rolls a 6, they move as follows: 98 >> 99 >> 100 >> 99 >> 98 >> 97 >> 96.

Another rule is that when a player rolls a 6, they can have another turn.

We have started to implement the game using Python code. However our code is incomplete. For instance, we our game is only for one player. We dd not implement all the ladders and snakes of the board. And we did not check if the player is allowed another go (when rolling a 6).

After checking and testing the code provided below, you will need to complete 3 tasks to finalise this code:

    Add some Python code (from line 55) to make sure all ladders and snakes are catered for.
    Add some Python code to allow the player to have another go when they roll a 6.
    Add some Python code to add a second player to the game.

Python code so far…

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Pacman – Pac-dots Randomiser

In this challenge, we are looking at using a 2D Array to create the maze used in a Pacman Game.

Our 2D array will contains different numerical values to represents the corridors, walls and the pac-dots:

So in our 2D-array a corridor is represented using a 0, a wall using a 1 and a pac-dot using a 2.

maze = [[1,1,1,1,1,1,1,1,1,1,1,1,1],
        [1,0,0,0,0,0,0,0,0,0,0,0,1],
        [1,0,1,1,0,1,0,1,0,1,1,0,1],
        [1,0,1,0,0,1,0,1,0,0,1,0,1],
        [1,0,0,0,1,1,0,1,1,0,0,0,1],
        [1,0,1,0,0,0,0,0,0,0,1,0,1],
        [1,0,1,0,1,1,0,1,1,0,1,0,1],
        [1,0,1,0,0,0,0,0,0,0,1,0,1],
        [1,0,0,0,1,1,0,1,1,0,0,0,1],
        [1,0,1,0,0,1,0,1,0,0,1,0,1],
        [1,0,1,1,0,1,0,1,0,1,1,0,1],
        [1,0,0,0,0,0,0,0,0,0,0,0,1],
        [1,1,1,1,1,1,1,1,1,1,1,1,1]]


We can then easily add pac-dots in our maze using the following code:

maze[3][3] = 2
maze[3][9] = 2
maze[9][3] = 2
maze[9][9] = 2

We can then use a script to paint all the tiles of this maze on the screen. In this case we have done so using Python Turtle.

Python Code

Your Task

Your task is to add a piece of Python code to add four new pac-dots on this maze. These pac-dots should be randomly placed in the maze but not over a wall or an existing pac-dot.

Here is the flowchart for this algorithm:

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Hogwarts Sorting Hat Algorithm

In this challenge, we will implement an algorithm to help the sorting hat at Hogwarts school of witchcraft and wizardry decide which house you would more likely belong to.

When a new student join Hogwarts school, they are assigned to one of the four school houses depending on their personal qualities. The four houses are:

  • Gryffindor values bravery, loyalty and chivalry
  • Ravenclaw values curious minds, creativity and inventiveness
  • Hufflepuff values kindness, friendliness, patience
  • Slytherin values ambition and competitiveness

Now let’s look at our algorithm step by step using a flowchart that we will convert into a Python program.

Our algorithm will work by asking the end-user some yes/no questions to help define their personality and main qualities. Based on the answers provided by the end-user, the algorithm will allocate points to four score variables, one for each house.

At the end, after collecting all the end-user’s answers, the algorithm will find which house scored the most point and inform the end-user of the house that is a best match to their personality.

Step 1: Initialising the Sorting Hat Algorithm

FlowchartPython Code
Flowchart

Python Code

# Hogwarts Sorting Hat Algorithm

# Step 1: Initialise the Sorting Hat
print("~~~~~~~~~~~~~~~~~~~~~~~")
print("~                     ~")
print("~   The Sorting Hat   ~")
print("~                     ~")
print("~~~~~~~~~~~~~~~~~~~~~~~")
print("")
print("Welcome to Hogwarts school of witchcraft and wizardry!")
print("Answer the following questions to be assigned your new house.")
print("")
gryffindor = 0	
hufflepuff = 0
ravenclaw = 0
slytherin = 0

Python Code

Complete the Python code below…

Step 2: Asking Yes/NO Question

Using IF statements
Let’s ask our first question to see if the user is considering themselves as being a brave person. If so we will add one point to their score for Gryffindor as bravery is a trait of the Gryffindor house.

FlowchartPython Code
Flowchart

Python Code

# Step 2: Collect user inputs
brave = input("Are you a brave person?").lower()
if brave=="yes":
  gryffindor = gryffindor + 1
Using IF and ELSE statements
Now let’s consider another question which could lead to two outcomes depending on the user’s answer. For instance let’s ask if the user considers themselves as being patient. If the answer is “yes” we will increase their Hufflepuff score by one however, if their answer is “no” we will increase their Slytherin score by 1 as students from the Slytherin students tends to be rather impatient.

FlowchartPython Code
Flowchart

Python Code

patient = input("Would you describe yourself as being patient?").lower()
if patient=="yes":
  hufflepuff = hufflepuff + 1 
else:
  slytherin = slytherin + 1 

Step 3: Adding more questions

It’s now your turn to work out the Python code needed to add the following 8 questions:

Question 3Question 4Question 5Question 6Question 7Question 8Question 9Question 10

Step 4: Displaying the scores for each house

FlowchartPython Code
Python Code

# Step 4: Display the scores
print("Total Scores:")
print(" - Gryffindor:" + str(gryffindor))
print(" - Ravenclaw:" + str(ravenclaw))
print(" - Hufflepuff:" + str(hufflepuff))
print(" - Slytherin:" + str(slytherin))

Step 5: Selecting the house with the highest score

FlowchartPython Code
Python Code

# Step 5: Select the house with the highest score
if gryffindor>=ravenclaw and gryffindor>=hufflepuff and gryffindor>=slytherin:
   print("You belong to Gryffindor!")
elif ravenclaw>=gryffindor and ravenclaw>=hufflepuff and ravenclaw>=slytherin:
   print("You belong to Ravenclaw!")
elif hufflepuff>=ravenclaw and hufflepuff>=gryffindor and hufflepuff>=slytherin:
   print("You belong to Hufflepuff!")
elif slytherin>=ravenclaw and slytherin>=hufflepuff and slytherin>=gryffindor:
   print("You belong to Slytherin!")

Extension Task

Can you think of any additional questions you could add to your program to take more accurate decisions?

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Solution...

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