 Complete the following phrase:  However apart from the Blackburne match, Steinitz played no competitive chess from 1874 to 1882. During that time, Zukertort emerged as the worlds leading active player, winning the Paris 1878 chess tournament. Zukertort then won the London 1883 chess tournament by a convincing 3-point margin, ahead of nearly every leading player in the world, with Steinitz finishing second. This tournament established Steinitz and Zukertort as the best two players in the world, and led to a match between these two, the 