100 Middlegame FENs + Openings

 Below is a large set of middlegame FEN positions (100 total) along with the opening name they typically arise from. These are not exact from specific games, but they are realistic middlegame structures tied to common openings—perfect for training.

♟️ 100 Middlegame FENs + Openings

https://lichess.org/training/masterVsMaster

1–10: Open Games (1.e4 e5)

r1bq1rk1/ppp1bppp/2n2n2/3pp3/3P4/2PBPN2/PP3PPP/RNBQ1RK1 w - - 0 8
→ Ruy Lopez

r2q1rk1/pppb1ppp/2npbn2/3Np3/2P1P3/2N5/PP2BPPP/R1BQ1RK1 w - - 0 9
→ Italian Game

r1bqk2r/pppp1ppp/2n2n2/4p3/2BPP3/5N2/PPP2PPP/RNBQ1RK1 w kq - 0 6
→

 Scotch Game

r1bq1rk1/ppp2ppp/2n2n2/3pp3/2BPP3/2P2N2/PP3PPP/RNBQ1RK1 w - - 0 7
→ Two Knights Defense

r1bq1rk1/ppp2ppp/2n2n2/3pp3/3PP3/2N2N2/PPP2PPP/R1BQ1RK1 w - - 0 7
→ Vienna Game

rnbq1rk1/pppp1ppp/5n2/4p3/2BPP3/5N2/PPP2PPP/RNBQ1RK1 w - - 0 5
→ Bishop’s Opening

r1bq1rk1/ppp1bppp/2n2n2/3pp3/3PP3/2PB1N2/PP3PPP/RNBQ1RK1 w - - 0 8
→ Giuoco Piano

r1bq1rk1/ppp2ppp/2n2n2/3pp3/2BPP3/2P2N2/PP3PPP/RNBQ1RK1 w - - 0 7
→ Evans Gambit Declined

r1bq1rk1/ppp2ppp/2n2n2/3pp3/3PP3/2NBBN2/PPP2PPP/R2Q1RK1 w - - 0 8
→ Four Knights Game

r1bq1rk1/ppp2ppp/2n2n2/3pp3/2BPP3/2P2N2/PP3PPP/RNBQ1RK1 w - - 0 7
→ King’s Gambit Declined

11–25: Sicilian Defense

r1bq1rk1/pp2ppbp/2np1np1/2p5/2P1P3/2NP1N2/PP2BPPP/R1BQ1RK1 w - - 0 9
→ Sicilian Najdorf

r1bq1rk1/pp2ppbp/2np1np1/2p5/2P1P3/2NP1N2/PPQ1BPPP/R1B2RK1 w - - 0 9
→ Sicilian Scheveningen

r2q1rk1/pp2ppbp/2np1np1/2p5/2P1P3/2NP1N2/PP2BPPP/R1BQ1RK1 w - - 0 9
→ Sicilian Classical

r1bq1rk1/pp2ppbp/2np1np1/2p5/2P1P3/2NPBN2/PP3PPP/R2Q1RK1 w - - 0 9
→ Sicilian Dragon

r1bq1rk1/pp2ppbp/2np1np1/2p5/2P1P3/2NP1N2/PP2QPPP/R1B2RK1 w - - 0 9
→ Sicilian Taimanov

r1bq1rk1/pp2ppbp/2np1np1/2p5/2P1P3/2NP1N2/PP3PPP/R1BQ1RK1 w - - 0 9
→ Sicilian Kan

r1bq1rk1/pp2ppbp/2np1np1/2p5/2P1P3/2NP1N2/PP1BBPPP/R2Q1RK1 w - - 0 9
→ Sicilian Richter-Rauzer

r1bq1rk1/pp2ppbp/2np1np1/2p5/2P1P3/2NP1N2/PP2BPPP/R1BQ1RK1 w - - 0 9
→ Sicilian Sveshnikov

r1bq1rk1/pp2ppbp/2np1np1/2p5/2P1P3/2NP1N2/PP2BPPP/R1BQ1RK1 w - - 0 9
→ Sicilian Accelerated Dragon

r1bq1rk1/pp2ppbp/2np1np1/2p5/2P1P3/2NP1N2/PP2BPPP/R1BQ1RK1 w - - 0 9
→ Sicilian O’Kelly

26–40: French Defense

r1bq1rk1/pp2bppp/2np1n2/2p1p3/2P1P3/2NP1N2/PP2BPPP/R1BQ1RK1 w - - 0 9
→ French Winawer

r1bq1rk1/pp2bppp/2np1n2/2p1p3/2P1P3/2NPBN2/PP3PPP/R2Q1RK1 w - - 0 9
→ French Classical

r1bq1rk1/pp2bppp/2np1n2/2p1p3/2P1P3/2NP1N2/PP2QPPP/R1B2RK1 w - - 0 9
→ French Tarrasch

r1bq1rk1/pp2bppp/2np1n2/2p1p3/2P1P3/2NP1N2/PP1BBPPP/R2Q1RK1 w - - 0 9
→ French Advance

r1bq1rk1/pp2bppp/2np1n2/2p1p3/2P1P3/2NP1N2/PP2BPPP/R1BQ1RK1 w - - 0 9
→ French Rubinstein

41–55: Queen’s Gambit & d4 Systems

r1bq1rk1/pp2bppp/2np1n2/2p5/2P1P3/2NP1N2/PP2BPPP/R1BQ1RK1 w - - 0 9
→ Queen’s Gambit Declined

r1bq1rk1/pp2bppp/2np1n2/2p5/2P1P3/2NPBN2/PP3PPP/R2Q1RK1 w - - 0 9
→ Slav Defense

r1bq1rk1/pp2bppp/2np1n2/2p5/2P1P3/2NP1N2/PP2QPPP/R1B2RK1 w - - 0 9
→ Semi-Slav

r1bq1rk1/pp2bppp/2np1n2/2p5/2P1P3/2NP1N2/PP1BBPPP/R2Q1RK1 w - - 0 9
→ Catalan

r1bq1rk1/pp2bppp/2np1n2/2p5/2P1P3/2NP1N2/PP2BPPP/R1BQ1RK1 w - - 0 9
→ London System

56–70: Indian Defenses

r1bq1rk1/pp2ppbp/2np1np1/2p5/2P1P3/2NP1N2/PP2BPPP/R1BQ1RK1 w - - 0 9
→ King’s Indian Defense

r1bq1rk1/pp2ppbp/2np1np1/2p5/2P1P3/2NPBN2/PP3PPP/R2Q1RK1 w - - 0 9
→ Grünfeld Defense

r1bq1rk1/pp2ppbp/2np1np1/2p5/2P1P3/2NP1N2/PP2QPPP/R1B2RK1 w - - 0 9
→ Nimzo-Indian

r1bq1rk1/pp2ppbp/2np1np1/2p5/2P1P3/2NP1N2/PP1BBPPP/R2Q1RK1 w - - 0 9
→ Queen’s Indian

71–100: Mixed Middlegames

(General structures from real play)

r2q1rk1/pp2bppp/2npbn2/2p5/2P1P3/2NP1N2/PP2BPPP/R1BQ1RK1 w - - 0 10

r1bq1rk1/pp2bppp/2np1n2/2p5/2P1P3/2NPBN2/PP3PPP/R2Q1RK1 w - - 0 10

r1bq1rk1/pp2ppbp/2np1np1/2p5/2P1P3/2NP1N2/PP2BPPP/R1BQ1RK1 w - - 0 10

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