🔒 can some explain this code to me

[burnt kayak]

def afterGame(board):
    global gamerunning, winner, currentPlayer
    winner = currentPlayer
    
    winning_line = None
    winning_combinations = [
        [0, 1, 2], [3, 4, 5], [6, 7, 8],  
        [0, 3, 6], [1, 4, 7], [2, 5, 8],  
        [0, 4, 8], [2, 4, 6]              
    ]
    for line in winning_combinations:
        if board[line[0]] == board[line[1]] == board[line[2]] != "-":
            winning_line = line
            break```

its working and i know ishould not touch it but i dont really understand the loop i build here why do i use those specific numbers and not 3,4,5 for example

[mighty glade]

@burnt kayak

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[austere mortar]

Because those are the indices of a tic tac toe grid that represent a winning position

[fervent whale]

those "winning combinations" are just indexes of horizontal, vertical and diagonal lines on a 3 by 3 matrix as shown in the picture

so what this loop does is to iterate over all the lines of the board and check if they have the same symbol (x or O)

@burnt kayak

[mighty glade]

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