By this time tournaments were becoming more frequent, and the round-robin format was adopted. At the same time, Anderssen, after losing the match to Morphy in 1858 and to Steinitz in 1866, re-dedicated himself to chess, particularly studying both endgames and positional play. The result was that Anderssen, in his early fifties, was playing the finest chess of his career. As a result, Anderssen compiled a very successful tournament record in the late stages of his career: five first places, two second places, two third places; and a sixth place in the final year of his life, when his health was failing. One of his first places was ahead of Steinitz, Gustav Neumann, Joseph Henry Blackburne, Louis Paulsen and several other very strong players at the Baden-Baden 1870 chess tournament. In terms of the number of leading players present, this could be regarded as one of the top 20 tournaments ever. One of Anderssen's third places was at the strong Vienna 1873 tournament, when he was 55. About half of Anderssen's tournament successes came at championships of the different regional German Chess Federations; but these were open to all nationalities, and most of them had a few "top ten" or even "top five" competitors. Anderssen usually beat Zukertort in matches, but his dominance came to an end in 1871.