Random-Mover-APCSP/RandomChess.py at main · WhChess/Random-Mover-APCSP · GitHub

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# This program is written in Python.

import chess
import random
import asyncio # Enables non-blocking I/O operations
import time

def check_board(stalemate, checkmate): # Checking board for seeing whether there is stalemate or checkmate.
    if(stalemate==1 and checkmate==1):
        print(board.is_checkmate(), " - Checkmate")
        print(board.is_stalemate(), " - Stalemate")

        if board.is_stalemate(): # Stalemate
            print("StaleMate, Game Over")
            time.sleep(10)
            sys.exit()

        elif board.is_checkmate(): # Checkmate
            print("Game Over")
            time.sleep(10)
            sys.exit()

    elif(stalemate==0 and checkmate==1):
        print(board.is_checkmate(), " - Checkmate")

        if board.is_checkmate():
            print("Game Over")
            time.sleep(10)
            sys.exit()

    else:
        pass;
    print("========================")

async def main():
    global board
    chess.STARTING_FEN = 'rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1' # Starting position
    print(chess.Board(chess.STARTING_FEN)) # Printing a small chess board
    board = chess.Board()

    print("""

Understanding the notation:

To input moves according to notation, you can use the board below. The squares are labeled with numbers and letters.

|----|----|----|----|----|----|----|----|
| a8 | b8 | c8 | d8 | e8 | f8 | g8 | h8 |
|----|----|----|----|----|----|----|----|
| a7 | b7 | c7 | d7 | e7 | f7 | g7 | h7 |
|----|----|----|----|----|----|----|----|
| a6 | b6 | c6 | d6 | e6 | f6 | g6 | h6 |
|----|----|----|----|----|----|----|----|
| a5 | b5 | c5 | d5 | e5 | f5 | g5 | h5 |
|----|----|----|----|----|----|----|----|
| a4 | b4 | c4 | d4 | e4 | f4 | g4 | h4 |
|----|----|----|----|----|----|----|----|
| a3 | b3 | c3 | d3 | e3 | f3 | g3 | h3 |
|----|----|----|----|----|----|----|----|
| a2 | b2 | c2 | d2 | e2 | f2 | g2 | h2 |
|----|----|----|----|----|----|----|----|
| a1 | b1 | c1 | d1 | e1 | f1 | g1 | h1 |
|----|----|----|----|----|----|----|----|

|----|----|----|----|----|----|----|----|
| r  | k  | b  | q  | k  | b  | k  | r  |
|----|----|----|----|----|----|----|----|
| p  | p  | p  | p  | p  | p  | p  | p  |
|----|----|----|----|----|----|----|----|
|    |    |    |    |    |    |    |    |
|----|----|----|----|----|----|----|----|
|    |    |    |    |    |    |    |    |
|----|----|----|----|----|----|----|----|
|    |    |    |    |    |    |    |    |
|----|----|----|----|----|----|----|----|
|    |    |    |    |    |    |    |    |
|----|----|----|----|----|----|----|----|
| P  | P  | P  | P  | P  | P  | P  | P  |
|----|----|----|----|----|----|----|----|
| R  | K  | B  | Q  | K  | B  | K  | R  |
|----|----|----|----|----|----|----|----|

    """)

    print("""

The chessboard shown above consists of certain pieces.

Pieces written in lowercase belong to black, and pieces written in uppercase belong to white.

P, p: Pawn
R, r: Rook
N, n: Knight
B, b: Bishop
Q, q: Queen
K, k: King

    """)
    white_list = ["White","white","w","W"] # List-1
    black_list = ["Black","black","b","B"] # List-2
    inputa = input("Would you like to be White or Black in this chess game?: ") # Input
    if(inputa in white_list):
        b = input("Please play a move (Write the move in appropriate notation): ") # Algebraic notation is the standard method for recording and describing the moves in a game of chess.
                                                                                   # See: https://en.wikipedia.org/wiki/Algebraic_notation_(chess)
        while True:
            try: # Is it legal move?
                board.push_san(b)
                break;
            except:
                b = input("This is not a legal move, try again: ")
        print("========================")
    elif(not(inputa in black_list)):
        print('You made a spelling mistake! Your side can only be White or Black. We continue with the default preference "Black".')
        print("========================")
    else:
        print("========================")
    check_board(0,1)

    while True:
        legal_moves = list(board.legal_moves) # Listing the legal moves.
        a = random.choice(legal_moves)
        await asyncio.sleep(2)
        board.push(a)
        print(board)
        board = chess.Board(board.fen())
        print("========================")
        print("YOUR TURN!")
        print("========================")
        check_board(1,1)
        legal_moves = list(board.legal_moves)
        b = input("Please play a move (Write the move in appropriate notation): ")
        while True:
            try:
                board.push_san(b)
                break;
            except:
                b = input("This is not a legal move, try again: ")
        print("========================")
        board = chess.Board(board.fen())
        check_board(1,1)

asyncio.run(main())