var chessBoard = function () {
    var chessBoard = [];
    var alph = "abcdefgh".toUpperCase().split("");
    var evenAlph = 'aceg';
    //create properties in object chessBoard that are letters A-H (i.e, chessBoard.A, chessBoard.B or similarly chessBoard['A'] or chessBoard['B'] etc.
    for (var i = 0; i < alph.length; i++) {
        chessBoard[alph[i]] = [];
    }
    //loop through properties of chessBoard with for ... in. in each loop, "v in chessBoard" means like how i in for(var i = 0; ... i++) changes i each time starting with 0 and ending with whatever is specified (i.e. i < 5), v will become the properties of chessBoard each loop, starting with v = 'A' and ending with v = 'H'
    for (v in chessBoard) {
        // "if this property name is an even letter (evenAlph)"
        if (evenAlph.indexOf(v.toLowerCase()) !== -1) {
            //start with 0, end with 8 (make 8 objects: A1-A8, B1-B8, etc.
            for (var i = 0; i < 8; i++) {
                //i is even (if the remainder of i divided by two is; 0, i.e. 2 divides i evenly)
                if (i % 2 == 0) {
                    //push with cell object, which is black
                    chessBoard[v].push({
                        black: true,
                        white: false
                    });
                } else {
                    //push with cell object, which is white
                    chessBoard[v].push({
                        black: false,
                        white: true
                    });
                }
            }
            //otherwise (this property is not an evenAlph) we start with white, end black
        } else {
            for (var i = 0; i < 8; i++) {
                if (i % 2 == 0) {
                    chessBoard[v].push({
                        black: false,
                        white: true
                    });
                } else {
                    chessBoard[v].push({
                        black: true,
                        white: false
                    });
                }
            }
        }
    }
    return chessBoard;
}();