13 x ...d5 without ...c5 (7.77 avg depth)
21 x ...d5 with ...c5 (11.38 avg depth)
11 x Queen's Indian Defence Setups (9.82 avg depth)
17 x Kingside Fianchetto Setups (9.00 avg depth)
18 x Benoni Setups (9.39 avg depth)
13 x The Dutch (8.77 avg depth)
10 x Odds and Ends (7.50 avg depth)
11 x Model Games (35.82 avg depth)
31 x Tactics (2.84 avg depth)