table.sakk {
    border-collapse: collapse;
    border: 2px solid #444;
    font-size: 1.4em;
    user-select: none;
    -moz-user-select: none;
}
table.sakk td,
table.sakk th {
    width: 1.2em;
    height: 1.2em;
    line-height: 1;
    text-align: center;
    vertical-align: center;
    padding: 0;
    color: #000;
    text-shadow: 0 -1px 0 #fff, 0 +1px 0 #fff, -1px 0 0 #fff, +1px 0 0 #fff;
    font-size: 100%;
    font-weight: normal;
}
table.sakk td {
    border: 1px solid #444;
}
table.sakk tr:nth-child(even) td:nth-of-type(even),
table.sakk tr:nth-child(odd) td:nth-of-type(odd) {
    background-color: #efedd1;
}
table.sakk tr:nth-child(odd) td:nth-of-type(even),
table.sakk tr:nth-child(even) td:nth-of-type(odd) {
    background-color: #789656;
}

table.sakk th.sakk-idx.sakk-idx.sakk-idx {
    background-color: #fcc;
    text-shadow: none;
    border-right: 1px solid #666;
}