In what year was the chess master, whose ideas of approach to the centre were challenged by Hypermodernism, born?
Hypermodernism (chess):  It featured challenges to the chess ideas of central European masters, including Wilhelm Steinitz's approach to the centre and the rules established by Siegbert Tarrasch. Wilhelm Steinitz: Wilhelm (later William) Steinitz (May 17, 1836 – August 12, 1900) was an Austrian and later American chess master, and the first undisputed world chess champion, from 1886 to 1894.
1836