Connect Four Game Evaluation

Determine Connect Four Game Outcome Given a m * n board where players place pieces, determine if the current player wins, or if the game remains ongoing. A move is represented by coordinates (row, col) and a player's name player, which can be either a or b. Write a function to determine if the current player has won the game or if it is still ongoing. Winning condition: Four consecutive pieces horizontally, vertically, or diagonally for the same player. Input: board: A 2D list representing the board state, with positions occupied by a or b and others empty. move: (row, col, player) indicating the current player's latest move. Output: Return the player's name (a or b) if the current player wins. Return None if no player has won and the game is still ongoing. Test Cases: Input: board = [['a', 'b', ''], ['', '', ''], ['', '', '']], move = (0, 2, 'a'). Output: None. Input: board = [['a', 'a', 'a', ''], ['b', 'b', 'b', ''], ['', '', '', '']], move = (0, 3, 'a'). Output: 'a' Data Constraints: m, n <= 10. Example Input 3 3 a b . . . . . . . 0 2 a