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 ...but can I draw it? by Jer)

┌ ─ ─ ─ ─ ─ ─ ─ ─ ┐ 

│ ┌ ─ ─ ─ ─ ─ ─ ┐ │ 

│ │ ┌ ─ ─ ─ ─ ┐ 2 ┘ 

│ │ │ 9 ─ ┐ 0 └ ─ ┐ 

│ │ └ ─ ┐ │ └ ─ ┐ │ 

│ │ ┌ ─ 5 │ 7 ┐ │ │ 

│ │ 6 ─ ┐ 8 ┘ │ │ │ 

│ 1 ─ ┐ └ ─ ─ ┘ │ │ 

│ 3 ┐ └ ─ ─ ─ ─ ┘ 4 

└ ┘ └ ─ ─ ─ ─ ─ ─ ┘ 

Posted by Charlie on 2005-03-10 19:53:41