Complex sentence: During that 36-year stretch, Torre assumed Board 1 chores 17 times--also a world record--and yielded it only twice, during the 1970 edition in Siegen, Germany and in 2006 in Turin, Italy.
Split into simpler sentences: During that 36-year stretch, Torre played on Board 1 a total of 17 times, a world record. He played a lower boar only twice: in 1970 in Siegen, Germany and in 2006 in Turin, Italy.