Complex sentence: Siegbert Tarrasch won the Championship section, over Carl Schlechter, Dawid Janowski, Frank Marshall, Amos Burn, and Mikhail Chigorin, these players were described as grandmasters for the purposes of the tournament.
Split into simpler sentences: Siegbert Tarrasch won the Championship section, over Carl Schlechter, Dawid Janowski, Frank Marshall, Amos Burn, and Mikhail Chigorin. These players were described as grandmasters for the purposes of the tournament.