rnb1k1nr/pp1pppbp/1q4p1/2p5/2PPP3/5N2/PP3PPP/RNBQKB1R w KQkq - 1 5 ; A04 Modern Defense: Semi-Averbakh Variation, Polish Variation
rnb1k1nr/pp1pppbp/6p1/q1p5/2PPP3/5N2/PP3PPP/RNBQKB1R w KQkq - 1 5 ; A04 Modern Defense: Semi-Averbakh Variation, Pterodactyl Variation
rnb1k1nr/pp2ppbp/3p2p1/q1P5/2P1P3/5N2/PP3PPP/RNBQKB1R w KQkq - 1 6 ; A04 Modern Defense: Semi-Averbakh Variation, Pterodactyl Variation Accepted
rnb1k1nr/pp2ppbp/3p2p1/q1p5/2PPP3/5N2/PP2BPPP/RNBQK2R w KQkq - 2 6 ; B06 Modern Defense: Semi-Averbakh Variation, Pterodactyl Variation Declined