Index of /invalid

      Name                    Last modified       Size  Description

[DIR] Parent Directory 15-Sep-2011 20:02 - [TXT] 61.map 30-May-2005 22:04 5k [TXT] 62.map 30-May-2005 22:04 5k [TXT] 63.map 30-May-2005 22:05 6k [TXT] 64.map 30-May-2005 22:05 5k [TXT] 65.map 30-May-2005 22:06 5k [TXT] 66.map 30-May-2005 22:06 5k [TXT] 67.map 30-May-2005 22:06 5k [TXT] 68.map 30-May-2005 22:06 5k [TXT] 69.map 30-May-2005 22:07 6k [TXT] 70.map 30-May-2005 22:07 6k [TXT] 71.map 30-May-2005 22:07 5k [TXT] 72.map 30-May-2005 22:08 5k [TXT] 73.map 30-May-2005 22:08 5k [TXT] 74.map 30-May-2005 22:08 5k [TXT] 75.map 30-May-2005 22:09 5k [TXT] 76.map 30-May-2005 22:09 5k [TXT] 77.map 30-May-2005 22:09 5k [TXT] 78.map 30-May-2005 22:10 5k [TXT] 79.map 30-May-2005 22:10 5k [TXT] 80.map 30-May-2005 22:10 5k

Some maps with `illegal' finishing points displayed as `.', i.e.
no move that starts at one of the `.' positions and touches a finish
is allowed.

Not that my current algorithm bails out at least on 71.map, 74.map
and 77.map.