Variations
English Opening: Agincourt Defense, Neo-Catalan Declined
Nf6 3. Bg2 e6 4. O-O Be7 5. c4 O-O 6. b3 c5
King's Indian Attack: Keres Variation
c6 3. Bg2 Bg4 4. O-O Nd7
Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan
c6 3. Bg2 Nf6 4. O-O Bg4 5. d4 e6