(A14) Declined
1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. O-O
0/100 games played
(A14) Bogolubov
1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. b3 O-O 6. Bb2 a5
0/100 games played