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In the actual Python project development, creating a chess dictionary validator is a challenging and educational project. The project aims to verify whether a given data structure (such as a dictionary) correctly represents the state of a chess board. The following is a detailed development process and key points.

1. Project Overview

The main task of the chess dictionary validator is to check whether a Python dictionary accurately reflects the chess board layout. The keys of this dictionary are usually the coordinates of the chessboard (such as 'a1' to 'h8'), and the values ​​are the chess pieces at that coordinate (such as 'K' for the white king, 'k' for the black king, 'Q' for the white queen, etc.). The validator needs to ensure that both the keys and values ​​in the dictionary conform to the rules of chess and that there are no missing or duplicate pieces.

2. Demand Analysis

1. Input validation: Make sure the input dictionary format is correct, the key is the chessboard coordinates ('a1'-'h8'), and the value is the chess piece ID.