Chess pygame

Chess game using pygame. Fuctionalites include:

• vs Player
• vs Computer (MinMax/NegaMax with alpha-beta pruning)

Added on 1 June 2023:

• Added chess bot automation for chess.com

Required installation

pip install pygame
pip install selenium
pip install webdriver-manager

Please ensure your Google Chrome is on the latest version before running the chess bot automation program

Running the Program

py main.py # Main Chess Application
py mainbot.py # Bot automation on chess.com

Description

main.py

When the program is opened, the user will be given options to battle against another player (locally), or against an AI.

The buttons are also animated. It will change color when you hover the mouse to the button, and perform a "pressing down" animation when you click on it

Once an option is decided, the main chess screen will appear. By default, white will always move first

To identify the possible moves a chess Piece could make, click on the chess Piece and the available moves will be highlighted in orange.

You can also see the opponent's possible moves.

Once a move is made, a yellow highlight will appear on the board of the chess Piece last and new position. There are also sound effects and animation for each move, whether it is a normal move or a capture.

The right side of the screen displays the move made in chess Notation

The Notation is as follows:

• Basic Move: [Piece Moved][Start Location][End Location]

• Capture Move: [Piece Moved][Start Location]x[PieceCaptured][Piece Captured Position]

where PieceMoved =

• P : Pawn
• R : Rook
• B : Bishop
• N : Knight
• Q : Queen
• K : King

mainbot.py

Once the file is executed, a new google chrome instance will be created heading to chess.com

Once the page is loaded, it will automatically battle one of the chess bots available on the websites. When the game has ended, there will be a delay of 100 seconds before the program ends.

Controls:

Left Click - Select and Move a chess Piece

Right Click - Undo Move

• If the opponent is an A.I, it will also undo the A.I last move if necessary. This is to prevent the A.I thinking/making a move directly after user undo.

R - Reset the entire Board

Esc - Exit the current Chess game

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Additional information

The program uses MinMax and NegaMax variant with alpha-beta pruning as the thought process. By default, the AI can think two steps ahead. This can be changed by changing the depth, but higher depth would increase time taken for the A.I to make a decision exponentially.

Special moves included:

• Pawn Promotion
• En Passant