e color, except for the checkerboard pattern at the right and
    left used to indicate the row positions.</p>

    <table>
        <tr>
            <td style="background: white">&nbsp;</td>
            <td id="one">&nbsp;</td>
            <td id="two">&nbsp;</td>
            <td id="three">&nbsp;</td>
            <td id="four">&nbsp;</td>
            <td id="five">&nbsp;</td>
            <td id="six">&nbsp;</td>
            <td style="background: black">&nbsp;</td>
        </tr>
        <tr>
            <t