Link <a rel="nofollow" class="external text" href="http://katlas.math.toronto.edu/wiki/L10a140">L10a140</a> of mathematical knot theory presented in a visual form which makes it evident that it is a Brunnian link.  The red loop is obviously not linked with either the blue or yellow loops, and if the red loop were absent, then the blue and yellow loops could also be separated from each other (by tucking the big end of the blue loop into the yellow loop and the big end of the yellow loop into the blue loop).
AnonMoos
<p>Self-made graphic, declared to be in public domain, converted from the following PostScript source code:
</p>
<pre>%!
306 396 translate/X{1800 sqrt}def
/A{0 X 4 mul .711 sub 50 45 135 arc -70 X 3 mul 30 135 225 arc
-70 X 30 45 -45 arcn -70 X neg 30 135 225 arc
0 X -3 mul .711 add 20 225 315 arc 70 X neg 30 -45 45 arc
70 X 30 225 135 arcn 70 X 3 mul 30 315 45 arc
closepath
gsave 18 setlinewidth 0 setgray stroke grestore
10 setlinewidth stroke}def
0 0 1 setrgbcolor A
gsave 1 1 0 setrgbcolor 180 rotate A grestore
1 0 0 setrgbcolor -70 -182 70 180 360 arc
-70 182 70 0 180 arc closepath
gsave 18 setlinewidth 0 setgray stroke grestore
10 setlinewidth stroke
18 setlinewidth 0 setgray
-79 -9 moveto 18 18 rlineto stroke
79 -9 moveto -18 18 rlineto stroke
0 X 4 mul .711 sub 50 90 113 arc stroke
0 X -3 mul .711 add 20 240 300 arc stroke
10 setlinewidth 0 0 1 setrgbcolor
-80 -10 moveto 20 20 rlineto stroke
80 -10 moveto -20 20 rlineto stroke
0 X 4 mul .711 sub 50 86 117 arc stroke
0 X -3 mul .711 add 20 236 304 arc stroke showpage
%EOF</pre>