Simplify the following text for a Grade 11 native English-speaking person.
Original: The First European Chess Boxing Championship took place in Berlin on October 1 , 2005 when Tihomir Atanassov Dovramadjiev of Bulgaria beat Andreas D'Schneider of Germany after D'Schneider gave up in the seventh round .
Simplified: The First European Chess Boxing Championship took place in Berlin on October 1 , 2005 . Tihomir Atanassov Dovramadjiev of Bulgaria defeated Andreas `` D '' Schneider of Germany , who conceded in the seventh ( chess ) round .