Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→g3, h2→g3	● f7→g6, h7→g6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e4 (2v0), ● b5 (2v0), ● d5 (3v0)	● d4 (2v0)
Cases faibles	—	—
Centre	● d5 (3v0), ● e4 (2v0)	● d4 (2v0), ● e5 (1v0)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bg2	● Bg2 Actif (mob. 7)
Bg7		● Bg7 Actif (mob. 6)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	4 (● g1, ● c1, ● a1, ● h1)	5 (● b8, ● 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	mobile
Ruptures	● d2-d4	● …d7-d5

A34o — English: Symmetrical, 2…g6

1.c4 c5 2.Nc3 g6 3.g3 Bg7 4.Bg2 * ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Nf3 (Développer g1 — 29 % des parties) ; e3 (Solidifier le centre — 26 % des parties) ; a3 (Préparer expansion aile dame — 19 % des parties) ; d3 (Solidifier le centre — 12 % des parties) ; e4 (Occuper le centre — 9 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Nc6 (Développer b8 — 93 % des parties) ; ...Nf6 (Développer g8 — 3 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1914 DSB-19.Kongress – Round 9 – Carls, Carl – 1-0 – Mieses, Julio Cesar – G59 1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 e6 5. d3 Ne7 6. Bg5 h6 7. Bd2 d5 8. Nf3 Nbc6 9. O-O d4 10. Ne4 b6
1961 WchT U26 08th – Round 7.1 – Hort, Vlastimil – 0-1 – Radulov, Ivan – G63 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 e6 5. e3 Ne7 6. Nge2 O-O 7. d4 cxd4 8. Nxd4 d5 9. cxd5 exd5 10. Nde2 Be6
1963 Zenica ch YUG – Round 9 – Pirc, Vasja – 0-1 – Ivkov, Borislav – G42 1. c4 g6 2. g3 Bg7 3. Bg2 c5 4. Nc3 Nf6 5. b3 O-O 6. Bb2 Nc6 7. Nf3 d5 8. cxd5 Nxd5 9. O-O Nxc3 10. Bxc3 e5
1964 Budapest ch-HUN – Round 4 – Bilek, Istvan – 1/2-1/2 – Haag, Ervin – G178 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 Nf6 5. b3 Nc6 6. Bb2 O-O 7. Nh3 d6 8. Nf4 e5 9. Nfd5 Nxd5 10. Nxd5 Ne7
1964 Capablanca Memorial – Round 1 – Rossetto, Hector – 0-1 – Wade, Robert G – G1 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 Nh6 5. Nf3 Nf5 6. a3 Nc6 7. Rb1 Nfd4 8. Nxd4 cxd4 9. Nd5 e6 10. Nf4 Rb8
1965 Hastings ch-BCF – Round 1 – Hartston, William R – 1-0 – Parr, David – G20 1. g3 g6 2. Bg2 Bg7 3. c4 c5 4. Nc3 Nf6 5. e3 O-O 6. Nge2 Nc6 7. d4 cxd4 8. exd4 d6 9. O-O Bg4 10. f3 Bf5
1965 Hungary – Round 1 – Bilek, Istvan – 1-0 – Honfi, K. – G7 1. c4 g6 2. Nc3 c5 3. g3 Bg7 4. Bg2 Nf6 5. e3 d6 6. Nge2 h5 7. h3 Nc6 8. d4 Bd7 9. b3 Rb8 10. Bb2 O-O
1966 Tel Aviv 6th – Round 9 – Sliwa, Bogdan – 0-1 – Aloni, Itzchak – G30 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 Nf6 5. e4 d6 6. Nge2 O-O 7. d4 Nbd7 8. O-O Rb8 9. b3 b6 10. h3 Bb7
1969 IBM I – Round 1 – Ree, Hans – 1/2-1/2 – Damjanovic, Marko – G1 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 Nf6 5. a3 Nc6 6. Rb1 a5 7. Nf3 O-O 8. O-O d6 9. d3 Rb8 10. Ne1 Bd7
1969 IBM-B – Round 10 – Johannessen, Simon T – 1/2-1/2 – De Rooi, Paul – G50 1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nf6 5. h4 Nc6 6. Nh3 e5 7. d3 d6 8. Bd2 O-O 9. Qc1 Nd4 10. e3 Nc6
1969 Vilnius – Round 1 – Grigoryan, Karen A. – 1/2-1/2 – Kapengut, Albert – G3 1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 e6 5. d3 Ne7 6. e4 Nbc6 7. Nge2 a6 8. f4 d6 9. O-O Rb8 10. Be3 Nd4
Jerusalem FIDE Grand Prix 2019 – Round 1.2 – Giri, Anish – 1/2-1/2 – Wei, Yi – G9 1. c4 g6 2. g3 Bg7 3. Bg2 c5 4. Nc3 Nf6 5. e3 O-O 6. Nge2 e6 7. d4 cxd4 8. Nxd4 d5 9. cxd5 Nxd5 10. O-O 1/2-1/2
Munchen 1993 – Round 1 – Lobron, Eric – 1-0 – Huebner, Robert – G1 1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 e6 5. h4 Nf6 6. Nh3 Nc6 7. Nf4 h5 8. a3 O-O 9. O-O Ne7 10. b4 d5
PCA Qualifiers 1993 – Round 11 – Hansen, Curt – 1/2-1/2 – Korchnoi, Viktor – G172 1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nf6 5. b3 O-O 6. Bb2 Nc6 7. d3 e6 8. Bxc6 bxc6 9. f4 e5 10. fxe5 Ng4
Saint Louis Rapid and Blitz 2025 – Round 20 – Gukesh D – 1-0 – Sam Shankland – G96 1. c4 g6 2. g3 Bg7 3. Bg2 c5 4. Nc3 Nf6 5. e3 O-O 6. Nge2 e6 7. O-O Nc6 8. d4 cxd4 9. exd4 d5 10. cxd5 Nxd5
Tal Memorial Blitz 2016 – Round 4.2 – Gelfand, Boris – 1-0 – Li, Chao – G17 1. c4 g6 2. Nc3 Bg7 3. g3 c5 4. Bg2 Nf6 5. Nf3 O-O 6. d4 d5 7. dxc5 dxc4 8. Qxd8 Rxd8 9. Ne5 Nfd7 10. Nxc4 Nxc5
Zurich Korchnoi CC 2017 – Round 1.1 – Kramnik, Vladimir – 1-0 – Anand, Viswanathan – G1 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 Nf6 5. e3 e6 6. d4 cxd4 7. exd4 O-O 8. Nf3 d5 9. b3 Ne4 10. Bb2 Nxc3

A34o — Symmetrical (1914)

1.c4 c5 2.Nc3 g6 3.g3 Bg7 4.Bg2

Les coups candidats

4…Nc6 — 90.9% (13834 parties) →

Ambassadeurs : Schmidt, Wlodzimierz (44x), Adorjan, Andras (36x), Gheorghiu, Florin (32x), Bak, Istvan (31x), Forintos, Gyozo V (28x), Ivkov, Borislav (24x), Matulovic, Milan (22x), Hort, Vlastimil (20x)

4…Nf6 — 4.8% (728 parties)

Ambassadeurs : Malakhatko, Vadim (5x), Pottinger, Carl (4x), Loew, Gerald (4x), Czech, Ludwig (3x), Gibicar, Danijel (3x), Bak, Istvan (2x), Geller, Efim P. (2x), Quinteros, Miguel A. (2x)

4…e6 — 2.1% (327 parties)

Ambassadeurs : Foisor, Sabina-Francesca (5x), Raijmaekers, Cees H W (3x), OKOLIEZEH, Uzochukwu Pascal (2x), Foisor, Mihaela-Veronica (2x), Kristensen, Bjarke Hautop (2x), Turner, Radek (2x), Erdos, Viktor (2x), Laurberg Hakon (1x)

4…d6 — 1.4% (219 parties)

Ambassadeurs : Larsen, Bent Ravn (2x), Medvegy, Zoltan Dr. (2x), Krogius, Nikolai V (1x), Novopashin, Arkady (1x), Efimov, Kondrat (1x), Khasin, Abram (1x), Peterson, Andrejs (1x), Bastrikov, Georgy (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	4…Nc6	4…Nf6	4…e6	4…d6
<1800	740	78%	13%	5%	2%
1800-2200	5266	89%	6%	3%	2%
2200-2600	7319	95%	3%	1%	1%
2600+	380	97%	3%	1%	—

Évolution par décennie (% des parties)

Décennie	N parties	4…Nc6	4…Nf6	4…e6	4…d6
1950s	47	89%	4%	—	4%
1960s	436	94%	3%	2%	0%
1970s	710	94%	3%	2%	1%
1980s	798	96%	2%	1%	1%
1990s	2046	91%	6%	2%	1%
2000s	3290	89%	6%	3%	2%
2010s	5881	91%	5%	2%	1%
2020s	2003	92%	4%	1%	2%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
4…Nc6	91%	92%	▲ +1.0%
4…Nf6	5%	4%	-0.5%
4…e6	2%	1%	▼ -0.6%
4…d6	1%	2%	+0.4%

Joueurs célèbres

Champions du monde dans cette position

Botvinnik, Mikhail — 10 parties
Tal, Mikhail — 10 parties
Kramnik, Vladimir — 10 parties
Carlsen, Magnus — 10 parties
Ding, Liren — 10 parties
Anand, Viswanathan — 9 parties
Karpov, Anatoly — 7 parties
Gukesh D — 7 parties
Kasparov, Garry — 5 parties
Smyslov, Vladimir — 1 partie
Fischer, Robert James — 1 partie

Parties historiques

4…Nc6 — 90.9% (13834 parties)

1952 — Heinicke, Herbert vs Levy, Pascal — 1-0 — Helsinki olm
1956 — Pachman, Ludek vs Botvinnik, Mikhail — 1/2-1/2 — Moscow RUS
1956 — Portisch, Lajos vs Pogats, Jozsef Jr. — 1/2-1/2 — Budapest HUN
1956 — Herink, Miroslav vs Holas, Josef — 1-0 — Podebrady CZE
1956 — Furman, Semyon vs Petrosian, Tigran V. — 1/2-1/2 — URS-ch sf Tbilisi GEO

4…Nf6 — 4.8% (728 parties)

1955 — Ufimtsev, Anatoly vs Tscherbakov — 1-0 — USSR
1956 — Perez Perez, Francisco Jose vs Toran Albero, Roman — 1/2-1/2 — Barcelona ESP
1963 — Pirc, Vasja vs Ivkov, Borislav — 0-1 — Zenica ch YUG
1963 — Hetman, Adam vs Ustinov, Georgy I — 0-1 — ?
1963 — Larsen, Bent Ravn vs Kinnmark, Ove — 1-0 — Halle zt

4…e6 — 2.1% (327 parties)

1961 — Hort, Vlastimil vs Radulov, Ivan — 0-1 — Helsinki FIN
1965 — Laurberg Hakon vs Nielsen, Verner — 1/2-1/2 — ?
1965 — Nergard, Ole-Kristian vs Rasmussen, Hans — 0-1 — ?
1966 — Schorr Blank, Leon vs Suer, Nevzat — 1-0 — La Habana olm fin-C
1968 — Bronstein, David I vs Honfi, Karoly — 1/2-1/2 — Kislovodsk

4…d6 — 1.4% (219 parties)

1956 — Efimov, Kondrat vs Khasin, Abram — 0-1 — Leningrad RUS
1958 — Peterson, Andrejs vs Bastrikov, Georgy — 1-0 — Tashkent UZB
1962 — Krogius, Nikolai V vs Novopashin, Arkady — 1/2-1/2 — Erevan ch-URS
1970 — Kertesz, Alfred vs Tratatovici, Moshe — 1/2-1/2 — Bucharest ROU
1973 — Kowarsch, Heinrich vs Baumgart, Armin — 1-0 — Krumbach

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