Draw a line that starts at 0 and visits numbers 0 to 9 in order. The line can only be horizontal or vertical, cannot cross itself, and can only change direction at dots. All dots must be visited.

. . . . . . . . . .
. . . . . . . . . .
. . . . . . . . 2 .
. . . 9 . . 0 . . .
. . . . . . . . . .
. . . . 5 . 7 . . .
. . 6 . . 8 . . . .
. 1 . . . . . . . .
. 3 . . . . . . . 4
. . . . . . . . . .

(In reply to re(2): ...but can I draw it? by Charlie)

I spent a while trying to make pictures in one of these windows, but they always came out horrible.  I wanted to post something of my solution so I figured I'd post my directions. 

I intended the directions to be more for the segments than the dots.  I think that means it doesn't matter whether a number is a dot.  In fact, I originally typed out the path as one (very) long string with no numbers at all, but put line breaks and numbers in after for readability.

Your picture is accurate to what I made on paper, so I guess we did ok.

Posted by Jer on 2005-03-11 12:17:03