The intelligent fighter I ran into is the scientist flavored fighter... of Thibault and Destreza fame from history. Its an unarmored fencing style
"It was the belief of both Carranza and Narvaez, as well as all of the subsequent masters of the Spanish School, that science, which is irrefutable, can and must be applied to swordsmanship. Their aim was to use science to improve the art of the sword,thus proving the validity, effectiveness, and perfection of their system. The definition of science must be taken into account before continuing. Science is knowledge, as of general truths or particular facts, obtained and shown to be correct by accurate observation and thinking. The science of geometry is the best manner in which "La Destreza" can be set forth because it is incontestable, being demonstrated to be exact by proofs." ....