You want to add a new piece type Wizard with special moves to an existing board game. Which design approach best fits this addition?

hard📝 Trade-off Q8 of 15

LLD - Design — Chess Game

You want to add a new piece type Wizard with special moves to an existing board game. Which design approach best fits this addition?

AAdd Wizard moves directly inside the Board class

BCreate a new subclass <code>Wizard</code> extending <code>Piece</code> and override move logic

CModify the base <code>Piece</code> class to include Wizard moves

DUse a global function to handle Wizard moves separately

Step-by-Step Solution

Solution:

Step 1: Consider extensibility
Adding new piece types is best done by subclassing to keep code modular.
Step 2: Why not modify base or board?
Changing base class or board breaks existing code and mixes responsibilities.
Final Answer:
Create a new subclass Wizard extending Piece and override move logic -> Option B
Quick Check:
New piece addition = subclass + override [OK]

Quick Trick: Add new pieces by subclassing base Piece class [OK]

Common Mistakes:

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