[Illustration:
/---------------\
/ \
/ /------B \
/ / | /^\ \
/ / |\ | / \ \
/ / | \ | / \ \
/ / | \ | / A \ \
/ / | \ | / | \ \
| / | \|/ | \ |
| | -----+-----*-----+----- | |
| | \ | /|\ | / | |
| | \ | / | \ | / | |
| | \ | / | \ | / | |
| | \ | / | \ | / | |
| | \|/ | \|/ | |
D-+------*-----+-----*----E | |
| /|\ | /|\ | |
| / | \ | / | \ | |
| / | \ | / | \ | |
| / | \ | / | \ | |
| / | \|/ | \ | |
| -----+-----*-----+----- | |
\ | /|\ | / |
\ | / | \ | / /
\ | / | \ | / /
\ | / | \ | / /
\ |/ | \| / /
\ | / /
\------+------/ /
| /
C-------/
]
It can be done in twelve continuous strokes, thus: Start at A in the
illustration, and eight strokes, forming the star, will bring you back
to A; then one stroke round the circle to B, one stroke to C, one round
the circle to D, and one final stroke to E--twelve in all. Of course, in
practice the second circular stroke will be over the first one; it is
separated in the diagram, and the points of the star not joined to the
circle, to make the solution clear to the eye.