NM Dana Mackenzie started playing tournament chess during the "Fischer boom" of 1971-1972 and never quit. Champion of North Carolina in 1985, 1987, and became master in 1988. He has a 1-0 career record against world chess champions. (The champion in question was the world computer champion, Belle, which Dana defeated in the 1983 U.S. Amateur Team Championship.) Mackenzie now lives in Santa Cruz, CA and runs a chess club for kids at the local library.

21: French Defense: Marshall Variation Resigning Too Soon Run Time: 00:46:54

22: French Defense: Winawer, Advance Variation: Another Tragic Resignation Run Time: 00:38:26

23: French Defense: Burn Variation Piece Coordination Run Time: 00:46:48

24: Giuco Piana: The Weak Back Rank Run Time: 00:40:00

25: Pirc: Austrian Attack: Await, Avoid, Attack Run Time: 00:44:05

195 Minutes