rnbqkb1r/ppp1pppp/5n2/3p4/3P4/4PN2/PPP2PPP/RNBQKB1R b KQkq - 0 3 ; D04 Queen's Pawn Game: Colle System
rn1qkb1r/ppp1pppp/5n2/3p1b2/3P4/4PN2/PPP2PPP/RNBQKB1R w KQkq - 1 4 ; D04 Queen's Pawn Game: Colle System, Anti-Colle
rnbqk2r/ppp1ppbp/5np1/3p4/3P4/3BPN2/PPP2PPP/RNBQK2R w KQkq - 2 5 ; D04 Queen's Pawn Game: Colle System, Grünfeld Formation
rnbqkb1r/ppp2ppp/4pn2/3p4/3P4/4PN2/PPP2PPP/RNBQKB1R w KQkq - 0 4 ; D05 Queen's Pawn Game: Colle System
rnbqkb1r/ppp2ppp/4pn2/3p4/3P4/3BPN2/PPP2PPP/RNBQK2R b KQkq - 1 4 ; D05 Queen's Pawn Game: Colle System
rnbqkb1r/ppp2ppp/4pn2/3p4/3P4/1P2PN2/P1P2PPP/RNBQKB1R b KQkq - 0 4 ; D05 Queen's Pawn Game: Colle System
r1bqkb1r/pp3ppp/2n1pn2/2pp4/3P4/1P2PN2/PBP2PPP/RN1QKB1R w KQkq - 2 6 ; D05 Queen's Pawn Game: Colle System
r1bqkb1r/pp3ppp/2n1pn2/2pp4/3P4/1P1BPN2/PBP2PPP/RN1QK2R b KQkq - 3 6 ; D05 Queen's Pawn Game: Colle System
r1bqkb1r/pp3ppp/2n1pn2/2pp4/3P4/1P2PN2/PBPN1PPP/R2QKB1R b KQkq - 3 6 ; D05 Queen's Pawn Game: Colle System
rn1q1rk1/pb2bppp/1p2pn2/2pp4/3P4/1P1BPN2/PBPN1PPP/R2Q1RK1 w - - 0 9 ; D05 Queen's Pawn Game: Colle System
rnbqkb1r/pp3ppp/4pn2/2pp4/3P4/2PBPN2/PP3PPP/RNBQK2R b KQkq - 0 5 ; D05 Queen's Pawn Game: Colle System, Traditional Colle