The "American Chess Bulletin", August 1905, p. 270, reported on a small event held after Ostend (1905)
"At the conclusion of the main event at Ostend, Marshall, Marco, Leonhardt and Teichmann were invited to take part in a four cornered tourney for a prize fund of 600 frncs, supplied by Professor Begas and Herr Albert Hallgarten. The winner of each game received 60 francs the loser 4 francs."
No other details wre provided, outside of the final standings and a list of games, the scores of which were later published in "American Chess Bulletin}, February 1906, p. 32.
The exact dates and schedule of play are not known. However, since the main Ostend event ended on July 18 and both Marshall and Leonhardt plated at Scheveningen (1905) beginning on July 31, in can be inferred that this event was entirely held in late July.
THough the report does not say so, it seems dafe to assume that each player received 50 francs in case of a draw. That would make the final standings and prizes:
Finally, it is interesting that all six games began <1.e4 e5> and that neither the Spanish nor the Four Knights were played. Three may or may not have been a formal restriction on openings, but it looks like the players understood that the sponsors were hoping for wide-open, exciting games.
1 2 3 4
1 Georg Marco * 1 1 0 2.0 160 francs
2 Paul Saladin Leonhardt 0 * ½ 1 1.5 150 francs
3 Frank James Marshall 0 ½ * 1 1.5 150 francs
4 Richard Teichmann 1 0 0 * 1.0 140 francs
NOTE: TH eorder of games below is the one which Helms listed them in ACB. The actual order is not known.