However, IM Hans Berliner, a former world champion of correspondence chess, wrote that Adams' "theories, though looked upon with scorn by most top chess players, made an immediate and lasting impression on me. Weaver W. Adams was the first person I met who actually had theories about how chess should be played." Berliner is himself a controversial figure, who argued in his 1999 book The System, that 1.d4 may win by force for White.Berliner 1999.
