(B20) Mengarini
1. e4 c5 2. a3
(B20) Snyder
1. e4 c5 2. b3
(B20) Snyder (Queen's Fianchetto)
1. e4 c5 2. b3 b6
(B20) Wing Gambit
1. e4 c5 2. b4
(B20) Wing Gambit (Santasiere)
1. e4 c5 2. b4 cxb4 3. c4
(B20) Wing Gambit (Marshall)
1. e4 c5 2. b4 cxb4 3. a3
(B20) Wing Gambit (Carlsbad)
1. e4 c5 2. b4 cxb4 3. a3 bxa3
(B20) Wing Gambit (Marienbad)
1. e4 c5 2. b4 cxb4 3. a3 d5 4. exd5 Qxd5 5. Bb2
(B20) Steinitz
1. e4 c5 2. g3
(B20) Keres
1. e4 c5 2. Ne2
(B20) Slow Sicilian
1. e4 c5 2. Be2
(B20) Philidor
1. e4 c5 2. Bc4
(B20) Gloria
1. e4 c5 2. c4 d6 3. Nc3 Nc6 4. g3 h5