## 3 Puzzle Pattern Conceptualization
### SOLID Principle Compliance  
The SOLID principles --Single Responsibility [16], Open-Closed [16], Liskov Substitution [17], Interface Segregation [2], and Dependency Inversion [6] --serve as a benchmark for assessing the robustness and adaptability of software architectures. The objective here is to critically examine how well the presented pattern aligns with each SOLID principle, elucidating both areas of strong adherence and potential challenges. By evaluating the pattern through the lens of these principles, we aim to provide a comprehensive understanding of its compatibility with established best practices in object-oriented design. The Single Responsibility principle is a cornerstone in object-oriented design, emphasizing the need for a class or interface to have only one reason to change. In Puzzle Pattern, this principle is diligently satisfied as each interface takes on a singular responsibility, encapsulating it comprehensively within its scope. This adherence ensures that each interface remains focused on a specific aspect of functionality, promoting a modular and easily maintainable structure. By adhering to the Single Responsibility Principle, the pattern not only aligns with established design principles but also contributes to a codebase that is more resilient to changes and easier to comprehend. This adherence to singular responsibility at  
Figure 1: UML class diagram that formalizes the example described above. the interface level lays a solid foundation for achieving clarity and maintainability, crucial aspects in the development of robust software systems. The adherence to the Open-Closed principle is a pivotal strength of the proposed Puzzle Pattern. It establishes a development environment where the introduction of new interfaces is a seamless process, devoid of the need to rectify or modify existing code within the class responsible for their implementation. This design philosophy imbues the class with an \"open to extensions, closed to modifications\" characteristic, a key tenet of the Open-Closed principle. This means that the system can readily accommodate new functionality through the addition of interfaces without necessitating changes to the existing codebase. By strictly adhering to the Open-Closed principle, the Puzzle Pattern promotes an extensible and adaptable architecture, enabling developers to enhance the system's capabilities without compromising the stability and integrity of the core code. This principled approach not only aligns with best practices but also contributes to a software design that is resilient to evolving requirements and scalable in the face of future enhancements. The pattern's alignment with the Liskov Substitution Principle (LSP) is inherent in the assembly operation it employs. The class's behavior is intricately tied to the implementation of interfaces, providing a solid foundation for LSP compliance. This design approach guarantees that the behavior of the class is exclusively defined through the interfaces it implements. Consequently, the addition or removal of an implementation has no cascading impact on the pre-existing behavior. The LSP, which asserts that objects of a superclass should be replaceable with objects of a subclass without affecting the correctness of the program, is elegantly upheld. The pattern's commitment to maintaining the expected behavior even in the face of changes in implementation ensures a robust and dependable software system, consistent with the principles of Liskov Substitution. The Interface Segregation principle is meticulously fulfilled through the deliberate creation of atomic interfaces within the proposed pattern. Each interface is crafted to be independent of methods it does not utilize, aligning with the essence of Interface Segregation. This intentional segregation ensures that each interface is inherently cohesive, containing only the functionality that is strictly necessary for its specific responsibility.