[Solved] Given the following 3x3 board state:board = [["X", "O", "X"], ["O", "X", "O"], ["O", "X", "X"]]Which of these checks will correctly identify a win for 'X' on the main diagonal? | LLD

LLD - Design — Tic-Tac-Toe Game

Given the following 3x3 board state:

board = [["X", "O", "X"],
         ["O", "X", "O"],
         ["O", "X", "X"]]

Which of these checks will correctly identify a win for 'X' on the main diagonal?

Aboard[0][0] == board[1][1] == board[2][2] == "X"

Bboard[0][2] == board[1][1] == board[2][0] == "X"

Cboard[0][0] == board[0][1] == board[0][2] == "X"

Dboard[2][0] == board[2][1] == board[2][2] == "X"

Step-by-Step Solution

Solution:

Step 1: Identify main diagonal positions
Main diagonal cells are at positions (0,0), (1,1), and (2,2).
Step 2: Check which option matches main diagonal and 'X'
board[0][0] == board[1][1] == board[2][2] == "X" compares these exact positions to 'X', correctly checking the main diagonal win.
Final Answer:
board[0][0] == board[1][1] == board[2][2] == "X" -> Option A
Quick Check:
Main diagonal check = positions (0,0),(1,1),(2,2) [OK]

Quick Trick: Main diagonal is top-left to bottom-right [OK]

Common Mistakes:

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