.board {
    font-family:Emulogic;
    margin:0 auto;
    padding-bottom:50px;
    position:relative;
    width:600px;

    @for $i from -1 through 7 {
        .x#{$i} {
            left: #{$i * 100}px;
        }

        .y#{$i} {
            top: #{$i * 100}px;
        }
    }
}