90 Minute Chess Lesson with Life National Master Bob Seltzer. Bob became a National Master at age 14 and won five national championships for his age group, earning a peak rating of 2353. He taught chess professionally and ran a nationally-recognized chess camp for several years (before retiring from competitive chess to pursue a business career). Media credits as a chess player include appearances on CNN, "People Are Talking" and "Live with Regis and Kathy Lee."