Lecture with GM Ronen Har-Zvi (The Teachings of Jacob Aagaard | Prophylaxis) – 2014.01.23 February 11, 2014 NHaselton Chess Lectures Saint Louis Chess ClubTue, February 11, 2014 12:49amURL:Embed: Chess Grandmaster Ronen Har-Zvi presents a lecture covering the ideas of Jacob Aargaard