A37f — English: Symmetrical, 5.Nf3 d6 6.d3

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 d6 6.d3 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte e4, case forte f4, case forte b5, case forte d5, case forte g5, paire de fous.
Faiblesses adverses : Bc8 enfermé, roi noir au centre.
Problèmes : roi au centre, Bc1 enfermé, Bg2 enfermé, 3 pièces non développées (C1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● Be3 — Développer Bc1
● h3 — Empêcher ...Bg4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte b4, case forte d4, case forte e5, case forte f5, avant-poste d4(C), Bg7 actif, paire de fous.
Faiblesses adverses : Bc1 enfermé, Bg2 enfermé, roi blanc au centre.
Problèmes : roi au centre, Bc8 enfermé, 4 pièces non développées (G8, C8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...Nf6 — Développer Ng8
● ...Bg4 — Développer Bc8, clouer Nf3
● ...d5 — Rupture
● ...e6 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

A37f —

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 d6 6.d3

Eval: [-0.16]

Les coups candidats

6…e5 — 31.3% (328 parties)

Ambassadeurs : McNab, Colin A (4x), Gomez Jurado, Luis Alberto (3x), Van der Lijn, Dick (2x), Parr, Frank (2x), Peelen, Piet (2x), Hegele, Juergen (2x), Galunov, Todor (2x), Inkiov, Ventzislav (2x)

6…Nf6 — 19.2% (201 parties)

Ambassadeurs : Carls, Carl (3x), Velimirovic, Dragoljub (2x), Chans Farina, Juan Francisco (2x), Payen, Arnaud (2x), Pedzich, Dominik (2x), Stevic, Hrvoje (2x), Treybal, Karel (1x), Haida, August Konrad (1x)

6…e6 — 18.9% (198 parties)

Ambassadeurs : Gomez Jurado, Luis Alberto (3x), Ivanov, Mikhail M. (2x), Aditya Tari (2x), Yurtseven, Melih (2x), Timofeev, Artyom (2x), Asis Gargatagli, Hipolito (2x), Pap, Marko (2x), Le Roux, Jean-Pierre (2x)

6…Bd7 — 6.4% (67 parties)

Ambassadeurs : Franciskovic, Borka (3x), Pedersen, Eigil (2x), Forintos, Gyozo V (2x), Grabics, Monika (2x), Tadic, Branko (2x), Carls, Carl (1x), Hilse, Wilhelm H (1x), Reti, Richard (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6…e5	6…Nf6	6…e6	6…Bd7
<1800	28	39%	29%	11%	7%
1800-2200	386	35%	21%	18%	5%
2200-2600	445	32%	11%	24%	6%
2600+	19	16%	21%	37%	—

Évolution par décennie (% des parties)

Décennie	N parties	6…e5	6…Nf6	6…e6	6…Bd7
1920s	6	—	67%	—	33%
1930s	3	—	33%	—	—
1950s	12	50%	8%	—	—
1960s	38	13%	26%	5%	26%
1970s	23	57%	9%	9%	4%
1980s	26	35%	15%	8%	19%
1990s	123	28%	29%	12%	7%
2000s	233	38%	20%	14%	6%
2010s	445	31%	17%	22%	5%
2020s	138	24%	14%	33%	3%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6…e5	31%	24%	▼ -7.5%
6…Nf6	17%	14%	▼ -3.5%
6…e6	22%	33%	▲ +11.3%
6…Bd7	5%	3%	▼ -2.3%

Parties historiques

6…e5 — 31.3% (328 parties)

1956 — Lisitsin, Georgy vs Khasin, Abram — 1/2-1/2 — Leningrad RUS
1956 — Schtalberg G vs Najdorf, Miguel — 1/2-1/2 — Moscow RUS
1957 — Popov, Vesselin vs Milev, Zdravko — 1/2-1/2 — Sofia BUL
1958 — Berg, Gerd vs Azmaiparashvili, Zurab — 1-0 — Sverdlovsk
1958 — Benko, Pal vs Averbakh, Yuri L — 1-0 — Portoroz SLO

6…Nf6 — 19.2% (201 parties)

1920 — Carls, Carl vs Bergdahl Larsson, Rasmus — 1-0 — Goteborg SWE
1921 — Treybal, Karel vs Haida, August Konrad — 1-0 — Brno Morava
1925 — Carls, Carl vs Rosselli del Turco, Stefano — 1-0 — ?
1925 — Carls, Carl vs Rosselli, Stefano — 1-0 — Baden-Baden GER
1938 — Madsen, Eigil vs Petersen, Axel — 0-1 — Copenhagen DEN

6…e6 — 18.9% (198 parties)

1966 — Bebchuk, Evgeni vs Kimelfeld, Rudolf — 1-0 — Moscow RUS
1967 — Panov, Vladimir vs Popov, Luben — 0-1 — Skopje MKD
1972 — Barcza, Gedeon vs Velimirovic, Dragoljub — 0-1 — Zagreb CRO
1975 — Caballero Lopez Jaime vs Redolfi, Argentino Rodolfo — 0-1 — CADAP II ol APA.VII/102
1985 — Otero Martin, Enrique vs Garcia Del Campo, Luis Alberto — 1-0 — Valladolid

6…Bd7 — 6.4% (67 parties)

1922 — Carls, Carl vs Hilse, Wilhelm H — 1/2-1/2 — Bad Oeynhausen GER
1924 — Reti, Richard vs Maroczy, Geza — 1/2-1/2 — New York, NY USA
1961 — Botez, Constantin vs Gheorghiu, Florin — 1/2-1/2 — Romania
1961 — Radulescu, Mihai vs Puscasiu, Octavian — 1/2-1/2 — Romania
1962 — Gawlikowski, Stanislaw vs Forintos, Gyozo V — 0-1 — Budapest HUN

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● e2→d3, f2→g3, h2→g3, d3→c4	● d6→c5, e7→d6, f7→g6, h7→g6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e4 (2v0), ● f4 (2v0), ● b5 (2v0), ● d5 (2v0), ● g5 (2v0)	● b4 (2v0), ● d4 (3v1), ● e5 (3v1), ● f5 (2v0)
Cases faibles	—	—
Centre	● d5 (2v0), ● e4 (2v0)	● d4 (3v1), ● e5 (3v1)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bg2	● Bg2 Enfermé (mob. 2)
Bg7		● Bg7 Actif (mob. 6)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	3 (c1, a1, h1)	4 (g8, c8, a8, h8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Au centre !	● Au centre !
Droits de roque	O-O / O-O-O	O-O / O-O-O

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● d3-d4, ● e2-e3	● …d6-d5, ● …e7-e6, ● …e7-e5, ● …f7-f6, ● …f7-f5

Partie
? 1990 – Round ? – Gurevich, Mikhail – 1/2-1/2 – Yudasin, Leonid – G5 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 Nc6 5. Nf3 d6 6. d3 Rb8 7. O-O Nh6 8. Bd2 Nf5 9. a3 a5 10. Rb1 O-O
1921 Brno Morava – Round 8 – Treybal, Karel – 1-0 – Haida, August Konrad – G16 1. c4 c5 2. Nc3 Nc6 3. d3 g6 4. g3 Bg7 5. Bg2 d6 6. Nf3 Nf6 7. Bd2 Bd7 8. Qc1 Qc8 9. Bh6 Nh5 10. Bxg7 Nxg7
1922 Bad Oeynhausen – Round 1 – Carls, Carl – 1/2-1/2 – Hilse, Wilhelm H – G1 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Nf3 Bd7 7. e4 Nf6 8. O-O O-O 9. Nd5 Rb8 10. Bg5 Nxd5
1924 New York – Round 3 – Reti, Richard – 1/2-1/2 – Maroczy, Geza – G69 1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. c4 Bg7 5. Nc3 d6 6. d3 Bd7 7. O-O Rb8 8. Be3 Nd4 9. Qd2 h5 10. Rab1 Bc6
1925 Baden-Baden – Round 1 – Carls, Carl – 1-0 – Rosselli, Stefano – G6 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Nf3 Nf6 7. Bd2 Bd7 8. O-O O-O 9. Nd5 Re8 10. Bc3 e5
1933 Paris Paris FRA – Round 6 – Tartakower, Savielly – 1-0 – Gromer, Aristide – G6 1. c4 c5 2. Nc3 g6 3. g3 Nc6 4. Bg2 Bg7 5. d3 d6 6. Nf3 h6 7. h3 e5 8. Bd2 Be6 9. Rb1 Nge7 10. e4 Qd7
1955 Buenos Aires CA – Round 3 – Sanguineti, Raúl Carlos – 1/2-1/2 – Trifunovic, Petar – G23 1. c4 c5 2. g3 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. d3 d6 6. Nf3 Nh6 7. O-O O-O 8. Bd2 Nf5 9. Rb1 Rb8 10. a3 a5
1956 Leningrad ch-URS – Round 1 – Lisitsin, Georgy – 0-1 – Averbakh, Yuri L – G126 1. Nf3 c5 2. c4 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2 d6 6. d3 Nh6 7. e4 O-O 8. O-O e5 9. Nd5 Ne7 10. Nf6+ Bxf6
1956 Leningrad ch-URS – Round 1 – Lisitsin, Georgy – 0-1 – Bannik, Anatolij – G127 1. Nf3 g6 2. g3 Bg7 3. Bg2 c5 4. c4 Nc6 5. Nc3 d6 6. d3 Nh6 7. Bd2 Nf5 8. O-O O-O 9. Qc1 Rb8 10. Rb1 Bd7
1956 URS Ch sf – Round ? – Lisitsin, Georgy – 1/2-1/2 – Khasin, Abram – G129 1. Nf3 c5 2. c4 g6 3. g3 Bg7 4. Bg2 Nc6 5. Nc3 d6 6. d3 e5 7. e4 Nge7 8. Be3 O-O 9. Qd2 Nd4 10. Nh4 Nec6
1957 Mar del Plata – Round 5 – Sanguineti, Raúl Carlos – 1/2-1/2 – Keres, Paul – G58 1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. c4 Bg7 5. Nc3 d6 6. d3 a6 7. Bd2 Rb8 8. a4 Bd7 9. Rb1 Nh6 10. h4 Nf5
1958 HUN Ch 13th – Round 1 – Forintos, Gyozo V – 0-1 – Barcza, Gedeon – G9 1. Nf3 c5 2. g3 g6 3. Bg2 Bg7 4. c4 Nc6 5. Nc3 d6 6. d3 a6 7. Bd2 Rb8 8. Rb1 b5 9. cxb5 axb5 10. b4 Nxb4
1958 Portoroz Interzonal – Round 6 – Benko, Pal – 1-0 – Averbakh, Yuri L – G51 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 Nc6 5. d3 d6 6. Nf3 e5 7. a3 a6 8. O-O Nge7 9. Ne1 Rb8 10. Nc2 b5
1959 HUN Ch 15th – Round 9 – Koberl, Ferenc – 1-0 – Orendy, Emil – G28 1. c4 g6 2. Nc3 Bg7 3. g3 c5 4. Bg2 Nc6 5. Nf3 d6 6. d3 e5 7. Rb1 Nge7 8. a3 b6 9. b4 Bb7 10. O-O Qd7
1960 Buenos Aires – Round 12 – Eliskases, Erich – 1/2-1/2 – Reshevsky, Samuel – G125 1. c4 g6 2. Nc3 Bg7 3. g3 c5 4. Bg2 Nc6 5. d3 d6 6. Nf3 Rb8 7. O-O a6 8. Ne1 Bd7 9. Rb1 b5 10. Bd2 b4
1961 Oberhausen etc – Round 10 – Clemens, Christian, Dr. – 1/2-1/2 – Furman, Slavomir – G237 1. c4 c5 2. g3 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. Nf3 d6 6. d3 Nh6 7. O-O Nf5 8. Rb1 O-O 9. Bd2 Rb8 10. a3 a6
1961 ROM Ch – Round 4 – Botez, Constantin – 1/2-1/2 – Gheorghiu, Florin – G27 1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. c4 Bg7 5. Nc3 d6 6. d3 Bd7 7. Bd2 Qc8 8. h4 h5 9. Rb1 Nh6 10. a3 Nf5
1962 Budapest-Warsaw m – Round ? – Gawlikowski, Stanislaw – 0-1 – Forintos, Gyozo V – G37 1. Nf3 c5 2. c4 g6 3. g3 Bg7 4. Bg2 Nc6 5. Nc3 d6 6. d3 Bd7 7. O-O a6 8. Rb1 b5 9. cxb5 axb5 10. Nxb5 Rxa2
1963 Budapest ch-HUN – Round 1 – Koberl, Ferenc – 1/2-1/2 – Varnusz, Egon – G10 1. c4 c5 2. Nf3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Nc3 a6 7. Be3 Nh6 8. Qc1 Nf5 9. Bd2 Rb8 10. O-O b5
1963 It – Round 15 – Szilagyi, Gyorgy Laszlo – 1/2-1/2 – Liebert, Heinz – G10 1. c4 c5 2. Nf3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nc3 d6 6. d3 a6 7. Bd2 Rb8 8. a4 Nf6 9. O-O O-O 10. Ne1 Ne8
1963 Odense – Round 1 – Pedersen, Eigil – 1-0 – From, Sigfred – G2 1. c4 c5 2. Nf3 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2 d6 6. d3 Bd7 7. Rb1 Qc8 8. Bd2 Nf6 9. Nd5 h5 10. Bc3 e5
1963 URS – Round ? – Bukhover, Alik – 1-0 – Kapengut, Albert – G18 1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. c4 Bg7 5. Nc3 d6 6. d3 Bd7 7. Bd2 a6 8. Qc1 Rb8 9. Nd5 b5 10. Bc3 e5
1963 Zenica ch YUG – Round 13 – Damjanovic, Mato – 1/2-1/2 – Velimirovic, Dragoljub – G69 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Nf3 Nf6 7. Bg5 Bg4 8. h3 Be6 9. a3 Qd7 10. Rb1 O-O
1964 Holstebro ch-DEN – Round 1 – Pedersen, Eigil – 1/2-1/2 – Norby, Peter H. – G5 1. Nf3 c5 2. g3 g6 3. c4 Bg7 4. Nc3 Nc6 5. Bg2 d6 6. d3 Nh6 7. h4 Bg4 8. Nd5 e6 9. Bg5 Qa5+ 10. Bd2 Qd8
1965 FRG Ch 08th – Round 4 – Besser, Hans – 1/2-1/2 – Hecht, Hans-Joachim – G9 1. Nf3 g6 2. c4 Bg7 3. Nc3 c5 4. g3 Nc6 5. Bg2 d6 6. d3 e5 7. Rb1 Nge7 8. a3 O-O 9. O-O Rb8 10. b4 b6
1965 Malaga Malaga ESP – Round 11 – Rocha, Antonio – 1/2-1/2 – O'Kelly de Galway, Alberic – G22 1. g3 c5 2. Bg2 Nc6 3. d3 g6 4. c4 Bg7 5. Nf3 d6 6. Nc3 Bd7 7. O-O Qc8 8. Nd5 Nf6 9. Nxf6+ Bxf6 10. Rb1 h5
1967 IBM-B – Round 8 – Medina-Garcia, Antonio – 1-0 – Van der Lijn, Dick – G23 1. g3 c5 2. Bg2 g6 3. c4 Bg7 4. Nc3 Nc6 5. d3 d6 6. Nf3 e5 7. Bd2 Be6 8. Ng5 Nge7 9. Nxe6 fxe6 10. h4 h6
1967 Skopje – Round 9 – Panov, Vladimir – 0-1 – Popov, Luben – G68 1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. d3 d6 6. Nf3 e6 7. O-O Nge7 8. Bg5 h6 9. Bd2 O-O 10. Rb1 a6
1968 Havirov – Round 5 – Kornasiewicz, Stanislaw – 1-0 – Pantaleev, Dimitar Dimitrov – G18 1. Nf3 c5 2. c4 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2 d6 6. d3 Bd7 7. O-O Qc8 8. Re1 Nh6 9. Bd2 Nf5 10. Rb1 h5
1968 Lugano olm - Round 1 - Borges Calvo, Russlan - 1-0 - Glauser, Hansruediger - G23 1. c4 g6 2. Nc3 c5 3. g3 Bg7 4. Bg2 Nc6 5. Nf3 d6 6. d3 Rb8 7. O-O Nh6 8. Bd2 O-O 9. a3 a6 10. Rb1 Nf5
1968 Lugano olm - Round 1 - Bouwmeester, Hans - 1/2-1/2 - Kupper, Josef - G10 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 d6 6. d3 a6 7. Bd2 Rb8 8. a3 Bd7 9. Rb1 b5 10. cxb5 axb5
1968 Netanya-A – Round 10 – Geller, Uzi – 1-0 – Troianescu, Octav – G56 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Nf3 Nh6 7. h4 Nf5 8. h5 Nfd4 9. Nxd4 cxd4 10. Ne4 f5
1968 Rubinstein Memorial – Round 6 – Adamski, Jan – 1/2-1/2 – Simagin, Vladimir – G39 1. Nf3 c5 2. c4 g6 3. Nc3 Bg7 4. g3 Nc6 5. Bg2 d6 6. d3 Nh6 7. h4 Ng4 8. Bd2 Nf6 9. a3 O-O 10. Rb1 a5
1968 SWE Ch – Round 1 – Carlberg, Gunnar – 1/2-1/2 – Jansson, Borje – G3 1. Nf3 g6 2. g3 Bg7 3. Bg2 c5 4. c4 Nc6 5. Nc3 d6 6. d3 Bd7 7. O-O Nh6 8. Bd2 Nf5 9. Qc1 O-O 10. Rb1 Rb8
43. Olympiad 2018 – Round 7.7 – Abdulla Hesham Alkhoori – 0-1 – Sasikiran, Krishnan – G488 1. Nf3 g6 2. c4 Bg7 3. Nc3 c5 4. g3 Nc6 5. Bg2 d6 6. d3 e6 7. O-O Nge7 8. Bg5 h6 9. Bd2 b6 10. Qc1 Bb7
Madrid rapid 1988 – Round 6 – Azmaiparashvili, Zurab – 0-1 – Andersson, Ulf 1949 – G30 1. g3 c5 2. Bg2 Nc6 3. c4 g6 4. Nc3 Bg7 5. d3 d6 6. Nf3 Rb8 7. O-O Nf6 8. e3 O-O 9. Re1 a6 10. d4 b5
Saint Louis Blitz 2024 - Round 1 - Firouzja Alireza - 1-0 - Dominguez Perez Leinier - G5 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 Nc6 5. d3 d6 6. Nf3 e6 7. Bd2 Nge7 8. a3 b6 9. Rb1 Bb7 10. O-O Qd7
World Blitz 2017 – Round 10.39 – Meier, Georg – 1/2-1/2 – Alekseev, Evgeny – G528 1. Nf3 c5 2. c4 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2 d6 6. d3 e6 7. a3 Nge7 8. Bd2 b6 9. b4 Bb7 10. Rb1 Qd7
World Blitz 2019 – Round 10.24 – Timofeev, Artyom – 0-1 – Aditya Tari – G671 1. c4 g6 2. g3 Bg7 3. Bg2 c5 4. Nc3 Nc6 5. Nf3 d6 6. d3 e6 7. Bf4 Nge7 8. Qd2 h6 9. h4 e5 10. Be3 Nf5
World Blitz 2019 – Round 12.31 – Timofeev, Artyom – 0-1 – Salem, A.R. Saleh – G810 1. c4 g6 2. g3 Bg7 3. Bg2 c5 4. Nc3 Nc6 5. Nf3 d6 6. d3 e6 7. Bf4 Nge7 8. Qc1 h6 9. O-O g5 10. Bd2 b6
World Blitz 2021 – Round 1.19 – Shoker, Samy – 0-1 – Martirosyan, Haik M. – G10 1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. c4 Bg7 5. Nc3 d6 6. d3 e5 7. a3 a5 8. Rb1 Nge7 9. O-O O-O 10. Bd2 h6
World Blitz 2022 – Round 5.43 – Harikrishna, Pentala – 1-0 – Svane, Frederik – G264 1. Nf3 c5 2. c4 g6 3. g3 Nc6 4. Bg2 Bg7 5. Nc3 d6 6. d3 Qd7 7. Qd2 b6 8. b3 Bb7 9. Bb2 h5 10. Nd5 Kf8

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