c. October to November?
Time control: 15min, +/- 1min per 50 rating points, up to 20min v 10min.
Source: Joe Klimczak's archive. A spreadsheet, last modified 19 November, contains a cross table, formatted to quasi-Swiss-Perfect style below. The description of this tournament in 2004 says that players could challenge anyone at the club, and play up to five games per night.
RTG NAME N TOTAL % 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1968 Leonhardt Wolfgang 1 6.0 75.0 3:W 3:W 5:W 5:L 12:W 12:W 9:L 9:W 1770 Dix Peter 2 1710 Patron Andrzej 3 9.5 73.1 12:W 4:D 13:W 1:L 14:W 10:W 1:L 18:W 18:W 13:W 16:W 16:L 6:W 1701 Curtis Martin 4 11.5 76.7 3:D 8:L 10:W 8:L 14:W 14:W 16:W 16:L 10:W 7:W 7:W 13:W 13:W 18:W 18:W 1594 Muller Norbert 5 4.0 33.3 1:L 1:W 16:L 16:L 6:W 6:W 10:W 10:L 9:L 9:L 12:L 12:L 1538 Nairn Mike 6 4.5 45.0 12:D 4:L 4:L 10:W 12:L :L 14:W 3:L 10:W 10:W 1532 Markou Victor 7 4.0 50.0 8:L 8:L 4:L 4:L 14:W 14:W 16:W 16:W 1529 Saxon Marc 8 8.0 66.7 13:W 4:W 4:W 16:L 16:L 8:L 12:L 7:W 7:W 12:W 14:W 18:W 1486 Janceski Alex 9 4.0 80.0 4:W 4:W 15:W 1:W 1:L 1471 Brooke John 10 3.0 37.5 4:L 15:W 3:L 4:L 5:W 6:L 13:W 13:L 1470 Marsden David 11 1452 Lewis Michael 12 6.5 54.2 3:L 6:D 13:W 18:W 18:W 8:L 6:W 1:L 1:L 8:L 5:W 5:W 1343 Klimczak Joe 13 5.0 50.0 8:L 3:L 12:L 18:W 18:W 3:L 4:L 4:W 10:W 10:W 1336 Frankland David 14 1.0 12.5 3:L 4:L 4:L 6:W 8:L 8:L 7:L 7:L 1301 Walker Colin 15 0.0 0.0 10:L 1500p Smith Jonathan 16 10.0 71.4 8:W 8:W 6:W 6:W 5:W 5:W 4:L 4:W 18:W 18:L 3:L 3:W 7:L 7:W 1300p Reher Rolf 17 1250p Bannan Tony 18 1.0 10.0 12:L 3:L 3:L 13:L 13:L 16:L 16:W 8:L 4:L 4:L