 He tied for 8-9th at Cologne in 1898 (the 11th DSB Congress, "Hauptturnier A", Ottokar Pavelka won), took 2nd, behind Julius Finn, at New York City in 1903, and tied for 5-6th at New York State Chess Association in 1907.He lost a match to Carl August Walbrodt (1–5) in 1891, and won against Eugene Delmar (4–1) in 1902.His name is attached to the Keidanski Variation in the Prussian Defence (1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.e5 d5 6.Bb5 Ne4 7.Nxd4 Bc5 8.Nxc6!