gistfile1.txt

var inputItem = 'o';
var board = [null , null , null , null , 'o', null , null , null , null ];
var sign = {
    max: inputItem === "o" ? "x" : "o",
    min: inputItem === "x" ? "x" : "o"
};

function generateTable(board, sign) {
    var testBoard = [], 
    nextBoard;
    for (var i = 0; i < board.length; i++) {
        nextBoard = board.slice();
        if (!nextBoard[i]) {
            nextBoard[i] = sign;
            testBoard.push(nextBoard);
        }
    }
    return testBoard;
}
function isEnd(board) {
    console.log('board', board);
    for (i = 0; i < board.length; i += 3) {
        if (board[i] === board[i + 1] && board[i + 1] === board[i + 2]) {
            return board[i] !== null  ? board[i] : false;
        }
    }
    for (var j = 0; j < board.length; j++) {
        if (board[j] === board[j + 3] && board[j + 3] === board[j + 6]) {
            return board[j] !== null  ? board[j] : false;
        }
    }
    
    if ((board[4] === board[0] && board[4] === board[8]) || 
    (board[4] === board[2] && board[4] === board[6])) {
        return board[4] !== null  ? board[4] : false;
    }
}
function miniMax() {
    var testBoard = generateTable(board, sign.max);
    testBoard = testBoard.map(function(elem) {
        return generateTable(elem, sign.min);
    });
    return testBoard;
}
var bigArray = miniMax();
console.log(bigArray);


var maxArray = 0;
var tempArray = 0;
var maxCoord = 0;

for (var i = 0; i < bigArray.length; i++) {
    for (var j = 0; j < bigArray[i].length; j++) {
        console.log('i, j: ', i, " ", j);
        isEnd(bigArray[i][j]);
        maxCoord = i;
        if (tempArray > maxArray) {
            maxCoord = i;
        }
    }
}