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For example, I see club players playing King's Gambit as well as the Four Knights Game a lot but almost never see these openings in the games of modern professional players.
Are there other openings that are popular among club players but more or less rejected by professional players?
Here is one approach that I did. Collect opening and variation names take the fen and search the stats of this opening. The opening is taken from eco.pgn from pgn-extract. Then use the opening explorer of lichess api to get the white wins, draws and black wins and finally the total games.
In this example the total games determines the popularity of the opening. The most number of games is ranked number 1. I used two databases, the lichess database and the masters database. If the move is not found in the database then its rank is set 100. Also for a given fen the number of moves requested from api is 20. So if fen is from start position + e4 move, the stats of reply moves requested is 20, can be e5, e6, c5 ... until 20 only.
The following are the results after checking the first 500 out of 2000 plus openings in the eco.pgn. The game coverage is from 2012-01 to 2021-11 applied to both lichess and masters databases.
rank_lcp is the ranking by number of games of the move based from lichess database rating groups of 1600, 1800 and 2000 with classical rating, move with most games is ranked #1
rank_mast is the ranking by number of games based from the masters database, move with most games is ranked #1.
lcp_pop is the difference between rank_mast and rank_lcp move, if this is positive that means it is popular to lichess players compared to masters, the value 100 as rank means it is not found in the given database,
fen is the position before the last move in the eco.pgn.
move is the last move in the eco.pgn
opening and variation are the names after making the move and are also available from the eco.pgn.
Example, in index 36 is bird opening with variation name From gambit, Lipke variation the fen is rnbqk2r/ppp2ppp/3b3n/8/8/5N2/PPPPP1PP/RNBQKB1R w KQkq - 2 5 and the move is d4. Based on lichess classical database with 1600, 1800, 2000 lichess ratings, the move d4 is ranked #1 whereas that move is not found in masters database with rank 100, resulting in 100-1 or 99 lcp_pop value.
Be noted that there are moves from lichess masters database with rank 100 meaning not found because the masters database moves included are only from 2012 to 2021-11. It is possible that if I change it to 1952 to 2021 range, that move can be in the master database. See second pastebin link for comparison from the full masters database.
The results below are only those openings having positive lcp_pop.
opening variaton fen move rank_lcp rank_mast lcp_pop
0 Vienna Hamppe-Muzio, Dubois variation r1bqkbnr/pppp1p1p/8/4n3/2B1PQ2/2N5/PPPP2PP/R1B2RK1 b kq - 0 8 Qf6 1 100 99
1 KGD Falkbeer, Charousek variation rnb1kb1r/ppp3pp/8/3q1p2/4nP2/8/PPPNQ1PP/R1B1KBNR w KQkq - 0 8 g4 1 100 99
2 KGA bishop's gambit, Greco variation rnb1kbnr/pppp1ppp/8/8/2B1Pp1q/8/PPPP2PP/RNBQ1KNR b kq - 3 4 Bc5 1 100 99
3 KGA bishop's gambit, classical defence rnb1k1nr/pppp1pbp/8/6p1/2BPPp1q/2N5/PPP3PP/R1BQ1KNR b kq - 0 6 Ne7 1 100 99
4 KGA bishop's gambit, McDonnell attack rnb1k2r/ppppnpbp/8/6p1/2BPPp1q/2N5/PPP3PP/R1BQ1KNR w kq - 1 7 g3 1 100 99
5 Ruy Lopez Berlin defence, Mortimer trap r1bqkb1r/ppppnppp/5n2/1B2N3/4P3/3P4/PPP2PPP/RNBQK2R b KQkq - 0 5 c6 1 100 99
6 KGA Cunningham, three pawns gambit rnbqk1nr/pppp1ppp/8/8/2B1P2b/5N2/PPPP3p/RNBQ1RK1 w kq - 0 7 Kh1 1 100 99
7 Queen's pawn Englund gambit r1b1kbnr/ppppq1pp/2n2P2/3Q4/8/5N2/PPP1PPPP/RNB1KB1R b KQkq - 0 5 Nxf6 1 100 99
8 Petrov modern attack, Bardeleben variation rnbqkb1r/pppp1ppp/8/2n1P3/3N4/8/PPP1QPPP/RNB1KB1R b KQkq - 0 6 Nc6 1 100 99
9 KGA Allgaier, Horny defence rnbq1b1r/pppp1k2/5n1p/8/4PQ1P/8/PPPP2P1/RNB1KB1R b KQ - 0 8 Bd6 1 100 99
10 KGA Allgaier, Cook variation rnbq1bnr/ppp3k1/7p/8/2BPpBpP/8/PPP3P1/RN1QK2R w KQ - 2 10 Be5+ 1 100 99
11 Evans gambit Steinitz variation r1bqk1nr/ppp3pp/1b1p1p2/n5B1/2BPP3/2N2N2/P4PPP/R2Q1RK1 w kq - 0 11 Be3 1 100 99
12 KGA Allgaier, Urusov attack rnbq1bnr/ppp3k1/7p/3B4/4PppP/8/PPPP2P1/RNBQK2R w KQ - 1 9 d4 1 100 99
13 Blackburne shilling gambit NaN r1b1kbnr/pppp1Npp/8/8/3nq3/8/PPPPBP1P/RNBQKR2 b Qkq - 1 7 Nf3# 1 100 99
14 KGA Kieseritsky, long whip defence, Jaenisch variation rnbqk1n1/pppp1p1r/7b/4N2p/2BPPppP/8/PPP3P1/RNBQK2R w KQq - 1 8 Nc3 1 100 99
15 Four knights Rubinstein counter-gambit Maroczy variation r1bq1rk1/ppp2ppp/3p1n2/2b1p3/N3P3/3P1B2/PPP2PPP/R1BQ1RK1 b - - 1 9 Bb6 1 100 99
16 KGA Kieseritsky, Brentano defence rnbqkb1r/ppp2p1p/5n2/3pN3/3PPppP/8/PPP3P1/RNBQKB1R w KQkq - 1 7 Bxf4 1 100 99
17 KGA Kieseritsky, Salvio defence, Cozio variation rnb1kbnr/ppppq2p/8/4Np2/3PPppP/8/PPP3P1/RNBQKB1R w KQkq - 0 7 Bc4 1 100 99
18 Latvian Polerio variation rnbqkbnr/pppp2pp/8/4N3/2B1p3/8/PPPP1PPP/RNBQK2R b KQkq - 0 4 d5 1 100 99
19 KP Nimzovich defence, Wheeler gambit r1bqkbnr/pppppppp/2n5/8/4P3/2P5/P2P1PPP/RNBQKBNR w KQkq - 1 4 d4 1 100 99
20 Scandinavian Anderssen counter-attack orthodox attack r1b1k1nr/ppp2ppp/2n5/q3P3/1b6/2N5/PPPB1PPP/R2QKBNR w KQkq - 3 7 Nf3 1 100 99
21 Scotch Sea-cadet mate r2q1bnr/ppp1kBpp/3p4/4N3/4P3/2N5/PP3PPP/R1Bb1RK1 w - - 1 10 Nd5# 1 100 99
22 Ponziani counter-gambit, Schmidt attack NaN r1bqkbnr/ppp3pp/2np4/4pp2/3PP3/2P2N2/PP3PPP/RNBQKB1R w KQkq - 0 5 d5 1 100 99
23 Alekhine's defence Kmoch variation rnbqkb1r/pp1ppppp/1n6/2p1P3/8/1B6/PPPP1PPP/RNBQK1NR w KQkq - 0 5 d3 1 100 99
24 Philidor Paulsen attack rnbqkbnr/ppp2ppp/8/3p4/3NP3/8/PPP2PPP/RNBQKB1R w KQkq - 0 5 exd5 1 100 99
25 Petrov classical attack, Marshall trap rn1q1rk1/ppp3pp/3b4/3P1p2/3Pn1b1/3B1N2/PP3PPP/RNBQR1K1 b - - 1 10 Bxh2+ 1 100 99
26 Alekhine's defence four pawns attack, Ilyin-Genevsky var. r2qkb1r/ppp1p1pp/1nn1p3/8/2PP2b1/5N2/PP4PP/RNBQKB1R w KQkq - 0 9 c5 1 100 99
27 Ruy Lopez Rabinovich variation r1bqk2r/2p2ppp/p4n2/1pbPR1N1/3n4/1B6/PPPP1PPP/RNBQ2K1 b kq - 0 10 Kf8 1 100 99
28 Irish (Chicago) gambit NaN r1bqkbnr/pppp1ppp/8/4n3/4P3/8/PPPP1PPP/RNBQKB1R w KQkq - 0 4 d4 1 100 99
29 KGD Falkbeer, Alapin variation rnb1k2r/ppp2ppp/8/3q4/4nP2/5N2/PPP1QbPP/RNBK1B1R w kq - 0 9 Nfd2 1 100 99
30 Gruenfeld Russian, Keres variation r2q1rk1/ppp1ppbp/1nn3p1/8/3PP1b1/2NQBN2/PP2BPPP/R3K2R w KQ - 7 11 O-O-O 1 100 99
31 Bishop's opening Pratt variation rnbqk2r/ppp2ppp/5P2/2b4Q/2pp4/2P5/PP3PPP/RNB1K1NR b KQkq - 1 7 O-O 1 100 99
32 QGD Albin counter-gambit, Lasker trap rnbqk1nr/ppp2ppp/8/4P3/1bPp4/4P3/PP1B1PPP/RN1QKBNR b KQkq - 2 5 dxe3 1 100 99
33 Ruy Lopez closed, Leonhardt variation rnb1k2r/2q1bppp/p2p1n2/1ppPp3/4P3/2P2N1P/PPBN1PP1/R1BQR1K1 b kq - 2 13 g5 1 100 99
34 Vienna gambit, Wurzburger trap NaN rnb1kb1r/ppp2ppp/8/3pP2q/8/2NP1Nn1/PPP4P/R1BQKB1R w KQkq - 2 8 Nxd5 1 100 99
35 Amsterdam attack NaN r1bqkbnr/ppp2ppp/2np4/4p3/2P5/1PN1P3/P2P1PPP/R1BQKBNR b KQkq - 0 4 Nf6 1 100 99
36 Bird From gambit, Lipke variation rnbqk2r/ppp2ppp/3b3n/8/8/5N2/PPPPP1PP/RNBQKB1R w KQkq - 2 5 d4 1 100 99
37 Ruy Lopez Noah's ark trap r1bqk2r/2p1bppp/p2p1n2/1p6/3QP3/1B6/PPP2PPP/RNB1R1K1 b kq - 0 10 c5 1 100 99
38 Catalan closed, Sokolsky variation r1bq1rk1/3nbppp/1pp1pn2/p2p4/2PP4/1P3NP1/PBQNPPBP/R4RK1 b - - 1 10 Ba6 1 100 99
39 Amar gambit NaN rn1qkbnr/ppp2ppp/8/3pp3/5P2/6PB/PPPPP2P/RNBQK2R b KQkq - 0 4 exf4 1 100 99
40 Old Indian Dus-Khotimirsky variation r1bqkb1r/pppn1ppp/3p1n2/4p3/2PP4/2N1P3/PP3PPP/R1BQKBNR w KQkq - 1 5 Bd3 2 100 98
41 Budapest Alekhine variation, Balogh gambit rnbqkb1r/pppp1ppp/8/4P3/2P1P1n1/8/PP3PPP/RNBQKBNR b KQkq - 0 4 d6 2 100 98
42 Evans gambit Goering attack r1bqk1nr/ppp2ppp/1b1p4/n7/2BPP3/2N2N2/P4PPP/R1BQ1RK1 w kq - 3 10 Bg5 2 100 98
43 KGA Allgaier, Walker attack rnbq1bnr/pppp1k2/7p/8/4PppP/8/PPPP2P1/RNBQKB1R w KQ - 0 7 Bc4+ 2 100 98
44 Giuoco Pianissimo Dubois variation r1bqk1nr/pppp2pp/2n5/2b1ppN1/2B1P3/3P4/PPP2PPP/RNBQK2R b KQkq - 1 5 f4 2 100 98
45 KGD Falkbeer, Charousek gambit rnbqkb1r/ppp2ppp/8/3P4/4nP2/8/PPP3PP/RNBQKBNR w KQkq - 0 6 Qe2 2 100 98
46 Fried fox defence NaN rnbqkbnr/ppppp1pp/5p2/8/3PP3/8/PPP2PPP/RNBQKBNR b KQkq - 0 2 Kf7 2 100 98
47 KGA Kieseritsky, Brentano defence, Caro variation rnbqkb1r/ppp2p1p/8/3pN3/3PnBpP/8/PPP3P1/RN1QKB1R w KQkq - 0 8 Nd2 2 100 98
48 Four knights Spielmann variation r3kb1r/1pp2ppp/p1p1b3/4q3/3PN3/8/PPP2PPP/R1BQR1K1 b kq - 0 10 Qd5 2 100 98
49 KGA Kieseritsky, Rice gambit rnbqk2r/ppp2p1p/3b1n2/3PN3/2B2ppP/8/PPPP2P1/RNBQK2R w KQkq - 1 8 O-O 2 100 98
50 Giuoco Piano Krause variation r1bq3r/ppp3pp/5k2/3pN3/1n1Pn3/1Q6/PP3PPP/RN2K2R w KQ - 2 12 f3 2 100 98
51 KP Nimzovich defence, Marshall gambit r1b1kbnr/ppp1pppp/2n5/3q4/3P4/8/PPP2PPP/RNBQKBNR w KQkq - 0 4 Nc3 2 100 98
52 Philidor Philidor counter-gambit, del Rio attack rnbqkbnr/ppp3pp/8/3pP1N1/4p3/8/PPP2PPP/RNBQKB1R w KQkq - 0 6 e6 2 100 98
53 Scotch gambit Hanneken variation r1bq1rk1/pppp1ppp/2n2n2/4P1N1/1bB5/8/PB3PPP/RN1Q1RK1 b - - 0 9 Nxe5 2 100 98
54 Nimzo-Indian Spielmann, San Remo variation r1bqk2r/pp1p1ppp/2n1p3/2P5/1bP1n3/1QN2N2/PP1BPPPP/R3KB1R b KQkq - 4 7 Nxc5 2 100 98
55 Vienna Steinitz gambit, Zukertort defence r1b1kbnr/pppp1ppp/2n5/8/3PPp1q/2N5/PPP1K1PP/R1BQ1BNR b kq - 2 5 d5 2 100 98
56 KGA Allgaier gambit rnbqkbnr/pppp1p1p/8/8/4PppP/5N2/PPPP2P1/RNBQKB1R w KQkq - 0 5 Ng5 2 100 98
57 QGD Rochlin variation r1b1kb1r/pp1n1ppp/2p1pn2/q2p2B1/2PP4/2N2N2/PP2PPPP/2RQKB1R w Kkq - 2 7 Bd2 2 100 98
58 Giuoco Piano Bernstein variation r1bqk2r/pppp1ppp/2n5/8/2BP4/1Qb2N2/P4PPP/R1B2RK1 b kq - 1 10 d5 2 100 98
59 Ruy Lopez Steinitz defence deferred, Lipnitsky variation r1bqkb1r/2p2ppp/p1pp1n2/4p3/3PP3/5N2/PPP2PPP/RNBQ1RK1 b kq - 0 7 Bg4 2 100 98
60 KGA Cunningham, Bertin gambit rnbqk1nr/pppp1ppp/8/8/2B1Pp1b/5N2/PPPP2PP/RNBQK2R w KQkq - 4 5 g3 2 100 98
61 KGA Silberschmidt gambit rnb1kb1r/pppp1p1p/7n/4N3/2BPPppq/8/PPP3PP/RNBQ1K1R b kq - 0 7 f3 2 100 98
62 Ruy Lopez Berlin defence, Trifunovic variation r1bqk2r/ppppbppp/2n5/1B2p3/3Pn3/5N2/PPP1QPPP/RNB2RK1 b kq - 2 6 d5 2 100 98
63 two knights defence Maroczy variation r1bqkb1r/ppp2pp1/5n1p/3P4/2P1p3/5N2/PPP1QPPP/RNB1K2R b KQkq - 0 9 Be7 2 100 98
64 French Steinitz variation rnbqkb1r/pp1n1ppp/4p3/2PpP3/5P2/2N5/PPP3PP/R1BQKBNR b KQkq - 0 6 Nc6 2 100 98
65 QGD Tarrasch, Schlechter-Rubinstein system, Rey Ardid variation r1bqkbnr/pp3ppp/2n5/3p4/2pP4/2N2NP1/PP2PP1P/R1BQKB1R w KQkq - 0 7 e4 2 100 98
66 Two knights defence, Keidanz variation NaN r1bqk2r/ppp2ppp/2N5/1B1pP3/4n3/8/PPP2bPP/RNBQ1K1R b kq - 1 9 Qh4 2 100 98
67 Ruy Lopez open, Richter variation r1bqkb1r/2pp1ppp/p1n5/1p2p3/B2Pn3/5N2/PPP2PPP/RNBQ1RK1 w kq - 0 7 d5 2 100 98
68 Giuoco Piano Aitken variation r1bqk2r/pppp1ppp/2n5/8/2BP4/2b2N2/P4PPP/R1BQ1RK1 w kq - 0 10 Ba3 2 100 98
69 Philidor Philidor counter-gambit, Zukertort variation rnbqkbnr/ppp3pp/3p4/4pp2/3PP3/5N2/PPP2PPP/RNBQKB1R w KQkq - 0 4 Nc3 3 100 97
70 KGD Falkbeer, Reti variation rnbqkb1r/ppp2ppp/5n2/3P4/4pP2/3P4/PPP3PP/RNBQKBNR w KQkq - 1 5 Qe2 3 100 97
71 Bishop's opening Lisitsyn variation r2qkbnr/pp3ppp/8/3pn3/8/8/PPP2PPP/RNBQK1NR w KQkq - 0 8 Ne2 3 100 97
72 King's Indian Four pawns attack, Florentine gambit rnbq1rk1/pp3pbp/3p1np1/2pp4/2P1PP2/2N2N2/PP2B1PP/R1BQK2R w KQ - 0 9 e5 3 100 97
73 Ruy Lopez Berlin defence, Pillsbury variation r1bqk2r/pnppbppp/2p5/4P3/8/5N2/PPP1QPPP/RNB2RK1 w kq - 1 9 b3 3 100 97
74 QGD Orthodox defence, Capablanca variation r1bq1rk1/p1pnbppp/1p3n2/3p2B1/3P4/2N1PN2/PP3PPP/2RQKB1R w K - 0 9 Bb5 3 100 97
75 Latvian corkscrew counter-gambit rnbqkbnr/pppp2pp/8/4N3/2B1p3/8/PPPP1PPP/RNBQK2R b KQkq - 0 4 Nf6 3 100 97
76 KGD classical, Soldatenkov variation rnbqk1nr/ppp2ppp/3p4/2b1p3/4PP2/5N2/PPPP2PP/RNBQKB1R w KQkq - 0 4 fxe5 3 100 97
77 KGA bishop's gambit, Anderssen variation rnbqkbnr/ppp2ppp/8/3B4/4Pp2/8/PPPP2PP/RNBQK1NR b KQkq - 0 4 c6 3 100 97
78 Giuoco Piano Ghulam Kassim variation r1bqk2r/pppp1ppp/2n5/2bBP3/8/2p2N2/PP3KPP/RNBQ3R w kq - 0 9 Kg3 3 100 97
79 Scotch gambit Vitzhum attack r1bqk2r/pppp1ppp/2n4n/2b3N1/2BpP3/8/PPP2PPP/RNBQK2R w KQkq - 4 6 Qh5 3 100 97
80 Scotch Gottschall variation 1rb2rk1/pp3ppp/2n2q2/3P4/8/2P1Q3/PP3PPP/RN2KB1R b KQ - 0 12 Nb4 3 100 97
81 KGA Lolli gambit (wild Muzio gambit) rnbqkbnr/pppp1p1p/8/8/2B1Ppp1/5N2/PPPP2PP/RNBQK2R w KQkq - 0 5 Bxf7+ 3 100 97
82 KGD classical, Svenonius variation r2qk2r/ppp2ppp/2np1n2/2b1p3/2B1PP2/2NP1Q1P/PPP3P1/R1B1K2R b KQkq - 0 8 exf4 3 100 97
83 QGD Semi-Tarrasch, Krause variation rnbqkb1r/1p3ppp/p4n2/1N1pp1B1/2P5/2N5/PP2PPPP/R2QKB1R w KQkq - 0 8 Qa4 3 100 97
84 KGA Allgaier, Thorold variation rnbq1bnr/pppp1k2/7p/8/4PppP/8/PPPP2P1/RNBQKB1R w KQ - 0 7 d4 3 100 97
85 two knights Max Lange attack, Berger variation r3k2r/ppp2ppp/1bn1bPq1/6N1/2ppNPP1/8/PPP4P/R1BQR1K1 b kq - 0 13 O-O-O 3 100 97
86 Sicilian dragon, classical, Stockholm attack r4rk1/pp2ppbp/3p1np1/q4P2/4P3/2N1B3/PPP1Q1PP/R4RK1 w - - 0 14 g4 3 100 97
87 Four knights Marshall variation r1bq1rk1/pppp1ppp/2n2n2/1Bb1N3/4P3/2N5/PPPP1PPP/R1BQ1RK1 b - - 0 6 Nd4 3 100 97
88 KGA Herzfeld gambit rnb1kbnr/pppp1p1p/8/4N3/2B1Pppq/8/PPPP2PP/RNBQ1K1R b kq - 3 6 Nc6 3 100 97
89 Vienna gambit Heyde variation rnbqkb1r/ppp3pp/8/3pPp2/4n3/2N2Q2/PPPP2PP/R1B1KBNR w KQkq f6 0 6 d4 3 100 97
90 QGD exchange, chameleon variation r1bqrnk1/ppp1bppp/5n2/3p2B1/3P4/2NBP3/PPQ1NPPP/R3K2R w KQ - 7 10 O-O-O 3 100 97
91 Hammerschlag (Fried fox/Pork chop opening) NaN rnbqkbnr/pppp1ppp/8/4p3/8/5P2/PPPPP1PP/RNBQKBNR w KQkq - 0 2 Kf2 3 100 97
92 Four knights Svenonius variation r1bq1rk1/pppp1ppp/2n2n2/1B2p3/4P3/2PP1N2/P1P2PPP/R1BQ1RK1 b - - 0 7 d5 3 100 97
93 KGD Falkbeer, Milner-Barry variation rnbqkbnr/ppp2ppp/8/3pp3/4PP2/8/PPPP2PP/RNBQKBNR w KQkq - 0 3 Nc3 4 100 96
94 KGA Allgaier, Blackburne gambit rnbq1bnr/pppp1k2/7p/8/4PppP/8/PPPP2P1/RNBQKB1R w KQ - 0 7 Nc3 4 100 96
95 Centre game Kupreichik variation r1bqr1k1/ppp2ppp/2np1n2/8/1bB1P3/2N1Q3/PPPB1PPP/2KR2NR w - - 0 9 Nh3 4 100 96
96 Bishop's opening MacDonnell double gambit rnbqk1nr/pppp1ppp/8/4p3/1bB1P3/8/P1PP1PPP/RNBQK1NR w KQkq - 0 4 f4 4 100 96
97 Caro-Kann Panov-Botvinnik, Gunderam attack rnbqkb1r/pp2pppp/5n2/3p4/2PP4/8/PP3PPP/RNBQKBNR w KQkq - 1 5 c5 4 100 96
98 KGA Ghulam Kassim gambit rnbqkbnr/pppp1p1p/8/8/2B1Ppp1/5N2/PPPP2PP/RNBQK2R w KQkq - 0 5 d4 4 100 96
99 Vienna Zhuravlev countergambit rnbqk1nr/pppp1ppp/8/4p3/1b2P1Q1/2N5/PPPP1PPP/R1B1KBNR b KQkq - 3 3 Nf6 4 100 96
100 KGD Falkbeer, Keres variation rnbqkb1r/ppp2ppp/5n2/3P4/4pP2/3P4/PPP3PP/RNBQKBNR w KQkq - 1 5 Nd2 4 100 96
101 Latvian Nimzovich variation rnb1kbnr/ppp3pp/3p1q2/8/2NPp3/8/PPP2PPP/RNBQKB1R w KQkq - 0 6 Ne3 4 100 96
102 Petrov modern attack, Steinitz variation rnbqkb1r/pppp1ppp/8/4P3/3pn3/5N2/PPP2PPP/RNBQKB1R w KQkq - 1 5 Qe2 4 100 96
103 Greco defence NaN rnbqkbnr/pppp1ppp/8/4p3/4P3/5N2/PPPP1PPP/RNBQKB1R b KQkq - 1 2 Qf6 4 100 96
104 KGA Greco gambit rnbqk1nb/pp3p2/2pp4/6p1/2BPPp2/2N2N2/PPP3P1/R1BQK3 w Qq - 0 10 Ne5 4 100 96
105 Alekhine's defence two pawns' attack, Mikenas variation rnbqkb1r/pppp1ppp/4p3/2PnP3/2B5/2N5/PP1P1PPP/R1BQK1NR b KQkq - 1 6 d6 4 100 96
106 Evans gambit compromised defence, Potter variation r1b1k2r/ppppnppp/2n3q1/b3P3/2B5/1QN2N2/P4PPP/R1B2RK1 w kq - 1 11 Rd1 4 100 96
107 Crab opening NaN rnbqkbnr/pppp1ppp/8/4p3/P7/8/1PPPPPPP/RNBQKBNR w KQkq - 0 2 h4 4 100 96
108 Tayler opening NaN r1bqkb1r/pppp1ppp/2n2n2/4p3/4P3/5N2/PPPPBPPP/RNBQK2R w KQkq - 4 4 d4 4 100 96
109 QGD Lasker defence, Bernstein variation rnb2rk1/ppp1qpp1/7p/3p4/3P4/1QP1PN2/P4PPP/R3KB1R b KQ - 1 11 Qd6 4 100 96
All 2014 openings in the eco.pgn are checked and there are only 502 openings where a move is more popular in lichess classical rating group 1600, 1800, 2000 database compared to lichess masters database.
All results cannot be shown because of message box character limit. The full 502 results can be found at pastebin.
Full result is in pastebin.
It includes eco and main line moves.
Full result is in pastebin.
It would be easier to answer the question the other way around. There are thousands of trappy lines an amateur might play but the number of lines a professional might play is very small.
For example, with white, you only really have the Ruy Lopez, Queens gambit and English. Maybe the Catalan. White might play 1nf3 or 1g3 but those are only attempts to transpose into favorable lines either in the above mentioned openings or to some pet line.
Some openings like the Scotch or London are viable but probably equal and are actually usually more popular at amateur level.
With black vs e4 there are 10 reasonable responses but only 4 (e5,c5,e6,c6,) are played often by professionals.
