return gather {
        take $header;
        for (1..$.size).reverse -> $row {
            take '  ' ~ $row.fmt("%2d  ") ~ (map &format-colors,  @.colors[$row-1].values)
                      ~ $row.fmt("  %-2d") ~ $inter-board-space
                      ~ $row.fmt("%2d  ") ~ (map &format-heights, @.heights[$row-1].values)
                      ~ $row.fmt("  %-2d") ~ "\n";
            # take sprintf from-pretty(
            #         [~] '  ', $board-line, $inter-board-space, $board-line
            #     ),
            #     $row, (map &format-colors,  @.colors[$row-1].values),  $row,
            #     $row, (map &format-heights, @.heights[$row-1].values), $row;
            # take "\n";
        }
        take $footer;
    };