C55h — Two Knights: 4.d3 Be7 5.O-O O-O

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Be7 5.O-O O-O * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Re1 (52 % des parties) ; c3 (Renforcer le centre — 14 % des parties) ; Bb3 (Clouer f7, Fou actif (mobilité 5) — 12 % des parties) ; Nc3 (Développer b1 — 10 % des parties) ; a4 (5 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...d6 (Libérer Bc8 — 86 % des parties) ; ...d5 (Occuper le centre — 11 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● c2→d3, d3→e4	—
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● d5 (2v1), ● g5 (2v0)	● b4 (2v0), ● d4 (2v1)
Cases faibles	—	—
Centre	● d5 (2v1)	● d4 (2v1)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bc4	● Bc4 Actif (mob. 6)
Be7		● Be7 Actif (mob. 4)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Clouages	—	● pawn f7
Non développées	3 (● b1, ● c1, ● a1)	2 (● c8, ● a8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Roqué	● Roqué
Droits de roque	—	—

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● d3-d4	● …d7-d5

Partie
11. Norway Armageddon 2023 – Round 6.1 – Aditya Tari – 0-1 – Carlsen, Magnus – G16 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Nc3 d6 7. a3 Bg4 8. h3 Bxf3 9. Qxf3 Nd4 10. Qd1 c6
1901 Havana – Round 1 – Fiol Abrines, Antoni – 0-1 – Capablanca, Jose – G7 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. O-O Be7 5. d3 O-O 6. Nc3 d6 7. Ne1 Be6 8. Nd5 Na5 9. b3 Bd7 10. Nxf6+ Bxf6
1905 It (Men) Barmen GER – Round 10 – Von Gottschall, Hermann – 1/2-1/2 – Suechting, Hugo – G112 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Nc3 d6 7. h3 Be6 8. Bxe6 fxe6 9. d4 exd4 10. Nxd4 Nxd4
1905 It (Men) Barmen GER – Round 12 – Leonhardt, Paul – 0-1 – Kostic, Boris – G132 1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. O-O Nf6 5. d3 O-O 6. Nc3 d6 7. a3 Be6 8. Bxe6 fxe6 9. Ng5 Qd7 10. f4 h6
1949 URS Ch, semi final – Round 8 – Chekhover, Vitaly – 1/2-1/2 – Furman, Slavomir – G65 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Nc3 d6 7. Nd5 Nxd5 8. Bxd5 Bg4 9. h3 Bxf3 10. Qxf3 Nd4
1951 Augsburg – Round 10 – Staudte, Hans-Hilmar – 1/2-1/2 – Pfeiffer, Gerhard – G39 1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. O-O Nf6 5. d3 O-O 6. Nc3 d6 7. h3 Na5 8. Qe2 c6 9. a3 Nxc4 10. dxc4 Qc7
1955 Ljubljana – Round 16 – Paoli, Enrico – 0-1 – Grosek, Branko – G139 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Nc3 d6 7. Be3 Na5 8. Bb3 Ng4 9. d4 c6 10. Qe2 Nxe3
1964 Tel Aviv olm fin-B – Round 7 – Moehring, Guenther – 1/2-1/2 – Tchalkhasuren, C. – G87 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. O-O Be7 5. d3 O-O 6. Nc3 d6 7. a3 Bg4 8. h3 Bh5 9. Nd5 Nxd5 10. Bxd5 Bxf3
1966 Rzeszow ch POL – Round 9 – Lachut, Jan – 0-1 – Sydor, Andrzej – G62 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Nc3 d6 7. h3 Na5 8. Qe2 h6 9. a3 Nxc4 10. dxc4 Nh7
1969 Palma de Mallorca – Round 13 – Najdorf, Miguel – 1/2-1/2 – Parma, Bruno – G116 1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. O-O Nf6 5. d3 O-O 6. Nbd2 d6 7. a3 Nd7 8. Ba2 Nb6 9. Nc4 Nxc4 10. Bxc4 Be6
20. European Teams 2015 – Round 7.2 – Mamedov, Rauf – 1/2-1/2 – Kantans, Toms – G297 1. e4 e5 2. Bc4 Nc6 3. Nf3 Nf6 4. d3 Be7 5. O-O O-O 6. c3 d5 7. exd5 Nxd5 8. Re1 Bf6 9. Nbd2 Nb6 10. Bb5 Bd7
79. Tata Steel GpA 2017 – Round 5.7 – Andreikin, Dmitry – 1/2-1/2 – Rapport, Richard – G35 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Nc3 d6 7. a3 Be6 8. Nd5 Qd7 9. Bg5 Bxd5 10. exd5 Nd4
79. Tata Steel GpA 2017 – Round 7.2 – Nepomniachtchi, Ian – 1/2-1/2 – Rapport, Richard – G44 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Nc3 d6 7. a3 Be6 8. Nd5 a5 9. Ng5 Bxd5 10. exd5 Nb8
American Cup Champ 2023 – Round 1.4 – So, Wesley – 1-0 – Shankland, Sam – G14 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Nc3 d6 7. a4 Na5 8. Ba2 Nc6 9. h3 Be6 10. Bxe6 fxe6
CCT Final Playoff 2023 – Round 4.2 – Caruana, Fabiano – 0-1 – Abdusattorov, Nodirbek – G38 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Nc3 d6 7. a4 Be6 8. Nd5 Bxd5 9. exd5 Nb4 10. d4 Nbxd5
Cote d'Ivoire Blitz 2019 – Round 14.5 – So, Wesley – 1/2-1/2 – Nepomniachtchi, Ian – G70 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. h3 d6 7. a4 a5 8. Re1 Be6 9. Nbd2 Nd7 10. c3 Nc5
Cote d'Ivoire Blitz 2019 – Round 8.4 – Amin, Bassem – 0-1 – Nepomniachtchi, Ian – G39 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. h3 d6 7. a4 a5 8. Re1 Be6 9. Na3 d5 10. exd5 Bxd5
Cote d'Ivoire Rapid 2019 – Round 3.4 – Topalov, Veselin – 1/2-1/2 – Nepomniachtchi, Ian – G14 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Nc3 d6 7. a4 Be6 8. Ng5 Bxc4 9. dxc4 a5 10. Be3 Nb4
Cote d'Ivoire Rapid 2019 – Round 7.5 – So, Wesley – 1-0 – Nepomniachtchi, Ian – G35 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. h3 d6 7. a4 a5 8. Re1 Be6 9. Nbd2 Qc8 10. c3 h6
FIDE Grand Swiss 2025 – Round 10 – Cheparinov Ivan – 0-1 – Harikrishna Pentala – G546 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Nc3 d6 7. a4 Na5 8. Ba2 Nc6 9. Bd2 Nb4 10. Bb3 c5
FIDE Grand Swiss 2025 – Round 11 – Sindarov Javokhir – 1/2-1/2 – Sargsyan Shant – G591 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Nc3 d6 7. a4 Bg4 8. h3 Bxf3 9. Qxf3 Nd4 10. Qd1 c6
FIDE Grand Swiss 2025 – Round 5 – Santos Latasa Jaime – 1/2-1/2 – Artemiev Vladislav – G271 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Nc3 d6 7. a4 a5 8. Re1 h6 9. h3 Re8 10. d4 exd4
FIDE Grand Swiss 2025 – Round 7 – Abdusattorov Nodirbek – 1-0 – Tabatabaei M. Amin – G354 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. a4 d5 7. exd5 Nxd5 8. a5 Kh8 9. Re1 f6 10. c3 Be6
FIDE Grand Swiss 2025 – Round 8 – Cheparinov Ivan – 1/2-1/2 – Zemlyanskii Ivan – G444 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Nc3 d6 7. a4 Bg4 8. h3 Bh5 9. Nd5 Nxd5 10. Bxd5 Nb4
FIDE Grand Swiss 2025 – Round 8 – Predke Alexandr – 1/2-1/2 – Grandelius Nils – G440 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Nbd2 d6 7. a4 h6 8. a5 Rb8 9. Re1 b6 10. axb6 axb6
FIDE World Blitz Championship 2025 – Round 9 – Paravyan David – 0-1 – Bu Xiangzhi – G171 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. h3 d6 7. a4 Be6 8. Bxe6 fxe6 9. Be3 h6 10. Nbd2 Nh7
FIDE World Cup 2025 – Round R1 Classical 2 – Boulrens Ala Eddine – 0-1 – Pranav V. – G85 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 cxd4 5. Nxd4 e6 6. O-O Bc5 7. Nb3 Bb6 8. c4 Nge7 9. Nc3 d4 10. c5 dxc3
FIDE World Cup 2025 – Round R1 Classical 2 – Robert Hovhannisyan – 1/2-1/2 – Kavin Mohan – G92 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bd7 8. Bxc6 bxc6 9. O-O Bc5 10. f3 Ng5
FIDE World Cup 2025 – Round R4 Classical 1 – Sam Shankland – 1/2-1/2 – Rapport Richard – G549 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bf5 7. O-O Be7 8. Re1 O-O 9. c4 Nc6 10. cxd5 Qxd5
FIDE World Rapid Championship 2025 – Round 5 – Javokhir Sindarov – 1/2-1/2 – Shant Sargsyan – G84 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. a4 d5 7. exd5 Nxd5 8. a5 b6 9. a6 Rb8 10. Nc3 Nxc3
Levitov Chess Week Rapid 2023 – Round 7.5 – Nepomniachtchi, Ian – 1-0 – Dubov, Daniil – G35 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. a4 d6 7. Nc3 Be6 8. Re1 Bxc4 9. dxc4 a5 10. h3 b6
Saint Louis Blitz 2023 – Round 7.1 – Giri, Anish – 0-1 – Caruana, Fabiano – G31 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Nc3 d6 7. a3 Bg4 8. h3 Bh5 9. Nd5 Nxd5 10. Bxd5 Kh8
Saint Louis Blitz 2024 - Round 7 - Dominguez Perez Leinier - 0-1 - Abdusattorov Nodirbek - G31 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. a4 d6 7. a5 a6 8. Re1 Kh8 9. Nc3 Bg4 10. h3 Bh5
Saint Louis Blitz 2024 - Round 9 - Dominguez Perez Leinier - 1-0 - Caruana Fabiano - G44 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. a4 d6 7. a5 a6 8. Re1 h6 9. h3 Re8 10. Nc3 Bf8
Superbet Rapid & Blitz Poland 2025 – Round 17 – Gavrilescu David – 1-0 – Topalov Veselin – G82 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. a4 d6 7. a5 a6 8. h3 Be6 9. Nc3 Qd7 10. Bg5 Rae8
Tal Memorial Blitz 2008 – Round 20 – Kamsky, Gata – 1-0 – Eljanov, Pavel – G167 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Nc3 d6 7. h3 Na5 8. a4 Nxc4 9. dxc4 c6 10. b3 Nd7
Tata Steel Chess 2025 – Round 11 – Gukesh D – 1/2-1/2 – Wei Yi – G67 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Nbd2 d5 7. exd5 Nxd5 8. Re1 f6 9. d4 Bg4 10. Nb3 Kh8
Tata Steel Masters 2024 - Round 1 - Gukesh, D - 1/2-1/2 - Abdusattorov, Nodirbek 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Nc3 d6 7. a4 Bg4 8. h3 Bh5 9. Be3 Qc8 10. Kh1 Kh8
Tata Steel Masters 2024 - Round 13 - Ding, Liren - 1/2-1/2 - Ju, Wenjun 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Nc3 d6 7. a4 Be6 8. Nd5 Bxd5 9. exd5 Nb4 10. d4 Re8
Tilburg Fontys 1997 – Round 1 – Adams, Michael – 1-0 – Onischuk, Alexanderexander – G4 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. a4 d6 7. Nbd2 Be6 8. Re1 Bxc4 9. dxc4 Re8 10. Nf1 Bf8
Vugar Gashimov Mem 2019 – Round 1.3 – Radjabov, Teimour – 1/2-1/2 – Carlsen, Magnus – G3 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. h3 d6 7. a4 a5 8. Nbd2 Nd7 9. Re1 Nb6 10. Bb3 Kh8
World Blitz 2017 – Round 10.33 – Fressinet, Laurent – 1-0 – Bu, Xiangzhi – G522 1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. Nf3 Be7 5. O-O O-O 6. Nc3 d6 7. a3 Bg4 8. Be3 Nd4 9. Bxd4 exd4 10. Nd5 Nxd5
World Blitz 2017 – Round 4.11 – Miton, Kamil – 0-1 – Wang, Hao(ZJWZ) – G176 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. a4 d6 7. h3 Be6 8. Re1 Qd7 9. Nc3 h6 10. Be3 a6
World Blitz 2021 – Round 12.47 – Movsesian, Sergei – 1/2-1/2 – Blohberger, Felix – G728 1. e4 Nc6 2. Nf3 e5 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. a4 d6 7. h3 a5 8. Nc3 Be6 9. Re1 Bxc4 10. dxc4 Nd7
World Blitz 2021 – Round 18.56 – Movsesian, Sergei – 1-0 – Zilka, Stepan – G1076 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. a4 d6 7. a5 Be6 8. Nc3 d5 9. exd5 Nxd5 10. Bb5 Nd4
World Blitz 2021 – Round 2.72 – Antipov Olano, Maxim – 1-0 – Heberla, Bartlomiej – G125 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Nc3 d6 7. a4 a5 8. h3 Be6 9. Bxe6 fxe6 10. Ne2 Qe8
World Blitz 2021 – Round 6.48 – Asadli, Vugar – 1-0 – Christiansen, Johan-Sebastian – G359 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Nc3 d6 7. a3 Kh8 8. h3 Be6 9. Nd5 Ng8 10. b4 Qd7
World Blitz 2022 – Round 1.63 – Zverev, Lev – 0-1 – Riazantsev, Alexander – G49 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. h3 d6 7. c3 Be6 8. Bb3 h6 9. Nbd2 Re8 10. Bc2 Bf8
World Rapid 2021 – Round 10.43 – Nihal Sarin – 1-0 – Erdos, Viktor – G596 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. a4 a5 7. h3 d6 8. c3 Be6 9. Bxe6 fxe6 10. Be3 h6
World Rapid 2021 – Round 2.79 – Asadli, Vugar – 0-1 – Mastrovasilis, Dimitrios – G128 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Nc3 d6 7. a3 Bg4 8. h3 Bh5 9. Nd5 Nxd5 10. Bxd5 Qc8

C55h — Two Knights (1901)

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Be7 5.O-O O-O

Les coups candidats

6.Re1 — 51.9% (6036 parties) →

Ambassadeurs : Hebden, Mark L (45x), Wosch, Arkadiusz (45x), Blagojevic, Dragisa (23x), Bologan, Victor (20x), Kahl, Fred (19x), Nevednichy, Vladislav (17x), Romanishin, Oleg M (17x), Degraeve, Jean-Marc (15x)

6.c3 — 13.7% (1590 parties)

Ambassadeurs : Yudasin, Leonid (19x), Gunnarsson, Jon Viktor (9x), Dolmatov, Sergey (7x), Van Riemsdijk, Herman C. (5x), Makarichev, Sergey (4x), Krivec, Jana (4x), Radulov, Ivan (3x), Nikolic, Predrag (3x)

6.Bb3 — 11.6% (1346 parties) →

Ambassadeurs : Vratonjic, Slobo (16x), Geller, Efim P. (12x), Kudrin, Sergey (12x), Kosten, Anthony C. (11x), Tiviakov, Sergei (10x), Nevednichy, Vladislav (9x), Kobalia, Mikhail (9x), Van Mil, Johannes A J (8x)

6.Nc3 — 9.9% (1151 parties)

Ambassadeurs : Kadric, Denis (10x), Tabatabaei, M. Amin (9x), Esipenko, Andrey (8x), Firouzja, Alireza (7x), Fressinet, Laurent (6x), Karjakin, Sergey (6x), Dubov, Daniil (6x), Dunn, John (5x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6.Re1	6.c3	6.Bb3	6.Nc3
<1800	660	36%	25%	7%	14%
1800-2200	3848	50%	19%	8%	10%
2200-2600	5908	58%	9%	14%	7%
2600+	400	52%	2%	12%	18%

Évolution par décennie (% des parties)

Décennie	N parties	6.Re1	6.c3	6.Bb3	6.Nc3
1950s	6	33%	—	—	33%
1960s	7	14%	29%	—	43%
1970s	30	23%	23%	13%	27%
1980s	349	21%	25%	41%	5%
1990s	1429	42%	19%	21%	8%
2000s	2875	48%	15%	16%	8%
2010s	4557	60%	13%	8%	6%
2020s	2384	52%	8%	2%	21%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6.Re1	60%	52%	▼ -7.6%
6.c3	13%	8%	▼ -4.4%
6.Bb3	8%	2%	▼ -5.8%
6.Nc3	6%	21%	▲ +14.6%

Joueurs célèbres

Champions du monde dans cette position

Kramnik, Vladimir — 10 parties
Carlsen, Magnus — 10 parties
Ju, Wenjun — 10 parties
Kasparov, Garry — 7 parties
Gukesh D — 5 parties
Anand, Viswanathan — 4 parties
Hou, Yifan — 3 parties
Ding, Liren — 1 partie

Parties historiques

6.Re1 — 51.9% (6036 parties)

1952 — Rossolimo, Nicolas vs Ortega, Rogelio — 1-0 — Havana CUB
1957 — Moran, Pablo vs Beltran Tassis, Alejandro — 1/2-1/2 — Zaragoza
1962 — Bakulin, Nikolac I vs Kaminskij, Sergej — 1-0 — Moscow RUS
1970 — Lorenz, Gerd vs Vogt, Lothar — 0-1 — DDR-ch 19th Freiberg
1972 — Sydor, Andrzej vs Zwaig, Arne — 1/2-1/2 — Skopje MKD

6.c3 — 13.7% (1590 parties)

1967 — Sales, Jose Nilo vs Serrao, Carlos Frederico Pacheco — 1-0 — Sao Paulo BRA
1968 — Miguel, Nahuel vs Valvo, Michael J — 1-0 — Seven Minute Chess, New York,
1970 — Zapuzek, Michel vs Marachi — 0-1 — Siegen GER
1974 — Harding, Tim D vs Kislov, Igor Pavlovich — 1/2-1/2 — ?
1977 — Rej, Dennis vs Frandsen, Ole — 1-0 — Espergarde

6.Bb3 — 11.6% (1346 parties)

1972 — Lutikov, Anatoly S vs Smejkal, Jan — 1-0 — Polanica Zdroj POL
1973 — Bronstein, David I vs Dvoretzky, Mark — 1/2-1/2 — Tbilisi GEO
1977 — Hug, Werner vs Pachman, Ludek — 1/2-1/2 — Geneva SUI
1978 — Hug, Werner vs Van Riemsdijk, Herman C. — 1/2-1/2 — Buenos Aires ARG
1981 — Beliavsky, Alexander G vs Agzamov, Grigory — 1-0 — Moscow RUS

6.Nc3 — 9.9% (1151 parties)

1951 — Staudte, Hans-Hilmar vs Pfeiffer, Gerhard — 1/2-1/2 — Augsburg GER
1955 — Paoli, Enrico vs Grosek, Branko — 0-1 — Ljubljana
1964 — Papadopoulos, Konstantinos NA vs Milonas, V.. — 1-0 — Thessaloniki GRE
1964 — Moehring, Guenther vs Tchalkhasuren, C. — 1/2-1/2 — Tel Aviv ISR
1966 — Aguilar Jean Jean, Lucas vs Sydor, Andrzej — 0-1 — Rzeszow ch POL

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