IM David Vigorito is the 2007 Masschusetts Champion. He has been the state champion of New Hampshire and Nevada. David rated at 2479 in USCF and is the Champion of the Boylston (Boston) Chess Club. He playes in the 2006 U.S. Championship after finishing in a tie for 3rd place at the U.S. Open in Phoenix. David is a successful chess author - his Challenging the Nimzo-Indian is very well received by critics and players alike.

King's Indian Defense: Classical Variation Part 1:  Runtime 29 mins 32 seconds

King's Indian Defense: Saemisch Variation Part 2: Runtime 21 mins 05 seconds

King's Indian Defense: Fianchetto Variation Part 3: Runtime 22 mins 40 seconds

King's Indian Defense: Four Pawns Attack Part 4: Runtime 38 mins 59 seconds

King's Indian Defense: Averbach & Hungarian Variation Part 5: Runtime 20 mins 59 seconds

135 Minutes