rnbqkbnr/ppp2ppp/3p4/4p3/4P3/5N2/PPPP1PPP/RNBQKB1R w KQkq - 0 3 ; C41 Philidor Defense
rnbqkbnr/ppp2ppp/3p4/4p3/3PP3/5N2/PPP2PPP/RNBQKB1R b KQkq - 0 3 ; C41 Philidor Defense
rnbqkbnr/ppp2ppp/3p4/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 1 3 ; C41 Philidor Defense
rnbqk1nr/ppp1bppp/3p4/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 2 4 ; C41 Philidor Defense
r2qkbnr/pppn1ppp/3p4/4P3/4P1b1/5N2/PPP2PPP/RNBQKB1R w KQkq - 1 5 ; C41 Philidor Defense: Albin-Blackburne Gambit
r2q1rk1/pp2bppp/2npbn2/2p3B1/4P3/2N2N2/PPP1BPPP/R2QR1K1 b - - 5 10 ; C41 Philidor Defense: Berger Variation
rnbqkbnr/ppp2ppp/3p4/8/3pP3/2P2N2/PP3PPP/RNBQKB1R b KQkq - 0 4 ; C41 Philidor Defense: Bird Gambit
rn1qkbnr/pppb1ppp/3p4/8/3QP3/5N2/PPP2PPP/RNB1KB1R w KQkq - 1 5 ; C41 Philidor Defense: Boden Variation
rnbqkbnr/ppp2ppp/3p4/8/3pP3/5N2/PPP2PPP/RNBQKB1R w KQkq - 0 4 ; C41 Philidor Defense: Exchange Variation
rnbqkbnr/ppp2ppp/3p4/8/3NP3/8/PPP2PPP/RNBQKB1R b KQkq - 0 4 ; C41 Philidor Defense: Exchange Variation
rnbqkb1r/ppp2ppp/3p1n2/8/3NP3/8/PPP2PPP/RNBQKB1R w KQkq - 1 5 ; C41 Philidor Defense: Exchange Variation
r1bqkbnr/pppn1ppp/3p4/4p3/3PP3/5N2/PPP2PPP/RNBQKB1R w KQkq - 1 4 ; C41 Philidor Defense: Hanham Variation
r1bqkbnr/pp1n1ppp/2pp4/4p3/2BPP3/2P2N2/PP3PPP/RNBQK2R b KQkq - 0 5 ; C41 Philidor Defense: Hanham Variation, Delmar Variation
r1bqkbnr/pp1n1ppp/2pp4/4p3/2BPP3/5N2/PPP2PPP/RNBQ1RK1 b kq - 1 5 ; C41 Philidor Defense: Hanham Variation, Krause Variation
r1bqkbnr/pp1n1ppp/2pp4/4p3/2BPP3/2N2N2/PPP2PPP/R1BQK2R b KQkq - 1 5 ; C41 Philidor Defense: Hanham Variation, Schlechter Variation
r1bqkbnr/ppp2ppp/1n1p4/4p3/2BPP3/5N2/PPP2PPP/RNBQK2R w KQkq - 3 5 ; C41 Philidor Defense: Hanham Variation, Sharp Variation
r1bqk1nr/pp1nbppp/2pp4/4P3/2B1P3/5N2/PPP2PPP/RNBQ1RK1 b kq - 0 6 ; C41 Philidor Defense: Hanham Variation, Steiner Variation
r1bqkbnr/pp1n1ppp/2pp4/4p1N1/2BPP3/8/PPP2PPP/RNBQK2R b KQkq - 1 5 ; C41 Philidor Defense: Hanham, Kmoch Variation
rnbqkbnr/ppp2p1p/3p2p1/8/3NP3/8/PPP2PPP/RNBQKB1R w KQkq - 0 5 ; C41 Philidor Defense: Larsen Variation
r1bqkb1r/pppn1ppp/3p1n2/4p3/3PP3/2N2N2/PPP2PPP/R1BQKB1R w KQkq - 3 5 ; C41 Philidor Defense: Lion Variation
r1bqk2r/pppnbBpp/3p1n2/4p3/3PP3/2N2N2/PPP2PPP/R1BQK2R b KQkq - 0 6 ; C41 Philidor Defense: Lion Variation, Bishop Sacrifice
r1bqk2r/pppnbBpp/5n2/4p3/4P3/2N2N2/PPP2PPP/R1BQK2R b KQkq - 0 7 ; C41 Philidor Defense: Lion Variation, Delayed Bishop Sacrifice
r1bq2k1/pppnbrpp/3pNn2/4p3/3PP3/2N5/PPP2PPP/R1BQK2R b KQ - 1 8 ; C41 Philidor Defense: Lion Variation, Forcing Line
r1bqk2r/pppnbpp1/3p1n1p/4p3/2BPP3/2N2N2/PPP2PPP/R1BQ1RK1 w kq - 0 7 ; C41 Philidor Defense: Lion Variation, Lion's Claw, with Bc4 and h6
r1bqk2r/pp1nbppp/2pp1n2/4p3/3PP3/2N2N2/PPP1BPPP/R1BQ1RK1 w kq - 0 7 ; C41 Philidor Defense: Lion Variation, Lion's Claw, with Be2 and c6
r1bqkb1r/pppn1ppp/3p1n2/4p3/3PP1P1/2N2N2/PPP2P1P/R1BQKB1R b KQkq - 0 5 ; C41 Philidor Defense: Lion Variation, Shirov Gambit
r1bq1rk1/pp1nbppp/2pp1n2/8/P1BpP3/2N2N2/1PP1QPPP/R1B2RK1 w - - 0 9 ; C41 Philidor Defense: Lion Variation, Sozin Variation
rnbqkbnr/ppp3pp/3p4/4pp2/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 0 4 ; C41 Philidor Defense: Lopez Countergambit
rnbqkb1r/ppp3pN/3p3n/5p2/2BpP3/8/PPP2PPP/RNBQK2R b KQkq - 0 6 ; C41 Philidor Defense: Lopez Countergambit, Jaenisch Variation
rnbqkbnr/ppp2ppp/3p4/8/2BpP3/5N2/PPP2PPP/RNBQK2R b KQkq - 1 4 ; C41 Philidor Defense: Morphy Gambit
rnbqkb1r/ppp2ppp/3p1n2/4p3/3PP3/5N2/PPP2PPP/RNBQKB1R w KQkq - 1 4 ; C41 Philidor Defense: Nimzowitsch Variation
rnbqkb1r/ppp2ppp/3p1n2/4P3/4P3/5N2/PPP2PPP/RNBQKB1R b KQkq - 0 4 ; C41 Philidor Defense: Nimzowitsch Variation
rnbqkb1r/ppp2ppp/3p1n2/4p3/2BPP3/5N2/PPP2PPP/RNBQK2R b KQkq - 2 4 ; C41 Philidor Defense: Nimzowitsch Variation, Klein Variation
rnbqkb1r/ppp2ppp/3p4/3QP3/4n3/5N2/PPP2PPP/RNB1KB1R b KQkq - 1 5 ; C41 Philidor Defense: Nimzowitsch Variation, Rellstab Variation
rnbqkb1r/ppp2ppp/3p4/4P3/4n3/5N2/PPPN1PPP/R1BQKB1R b KQkq - 1 5 ; C41 Philidor Defense: Nimzowitsch Variation, Sokolsky Variation
r1bq1rk1/pppnbBpp/3p1n2/4p1N1/3PP3/2N5/PPP2PPP/R1BQK2R b KQ - 0 7 ; C41 Philidor Defense: Nimzowitsch, Larobok Variation
rnbqkb1r/ppp2ppp/3p1n2/4p1N1/3PP3/8/PPP2PPP/RNBQKB1R b KQkq - 2 4 ; C41 Philidor Defense: Nimzowitsch, Locock Variation
rnbqkbnr/ppp2ppp/8/3P4/3N4/8/PPP2PPP/RNBQKB1R b KQkq - 0 5 ; C41 Philidor Defense: Paulsen Attack
rnbqkbnr/ppp3pp/3p4/4pp2/3PP3/5N2/PPP2PPP/RNBQKB1R w KQkq - 0 4 ; C41 Philidor Defense: Philidor Countergambit
rnbqk1nr/ppp3pp/4P3/2bp2N1/4p3/2N5/PPP2PPP/R1BQKB1R b KQkq - 2 7 ; C41 Philidor Defense: Philidor Countergambit, Berger Variation
rnbqkbnr/ppp3pp/3p4/4pp2/3PP3/2N2N2/PPP2PPP/R1BQKB1R b KQkq - 1 4 ; C41 Philidor Defense: Philidor Countergambit, Zukertort Variation
rnbqkbnr/ppp3pp/4P3/3p2N1/4p3/8/PPP2PPP/RNBQKB1R b KQkq - 0 6 ; C41 Philidor Defense: Philidor Countergambit, del Rio Attack
rn1qkbnr/pppb1ppp/3p4/4p3/3PP3/5N2/PPP2PPP/RNBQKB1R w KQkq - 1 4 ; C41 Philidor Defense: Philidor Gambit
rnbqk1nr/ppp1bppp/3p4/4p3/2B1P3/2P2N2/PP1P1PPP/RNBQK2R b KQkq - 0 4 ; C41 Philidor Defense: Steinitz Variation