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	—	—
Cases faibles	—	—
Centre	● d5 (1v0)	● d4 (1v0)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bf1	● Bf1 Non développé (mob. 2)
Bc8		● Bc8 Non développé (mob. 0)
Bf8		● Bf8 Non développé (mob. 2)
Paire de fous	● Oui	● Oui
Non développées	6 (● b1, ● g1, ● c1, ● f1, ● a1, ● h1)	6 (● b8, ● g8, ● c8, ● f8, ● 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

A30a — English: Symmetrical, 2.g3 g6

1.c4 c5 2.g3 g6 * ○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Bg2 (Fianchetto, fou sur la grande diagonale — 95 % des parties) ; Nc3 (Développer b1 — 3 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Bg7 (Fianchetto, fou sur la grande diagonale — 97 % des parties) ; ...Nc6 (Développer b8 — 2 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1956 Olympiad Moscow RUS – Round 5 – Najdorf, Miguel – 1/2-1/2 – Botvinnik, Mikhail – G17 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nf3 Nc6 5. O-O d6 6. d3 Nh6 7. Nc3 O-O 8. Rb1 Rb8 9. a3 b6 10. b4 Bb7
1959 AUS Ch – Round 10.7 – Koshnitsky, Gregory – 1-0 – Basta Emanuel – G43 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nf3 Nc6 5. O-O f5 6. e4 fxe4 7. Ng5 Nf6 8. Nc3 O-O 9. Ngxe4 Nxe4 10. Nxe4 Bd4
1965 BRA Ch 32th – Round 14 – Alves, Francisco H B Severino – 0-1 – De Freitas, Marcio Elisio – G42 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nf3 Nc6 5. O-O e6 6. e4 Nge7 7. Nc3 a6 8. d3 d6 9. Be3 Nd4 10. Ne1 O-O
1966 Budapest Ch – Round 11 – Szilagyi, Gyorgy Laszlo – 1/2-1/2 – Flesch, Janos – G13 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nf3 Nc6 5. O-O a6 6. Nc3 Rb8 7. a4 d6 8. Rb1 Nf6 9. Ne1 Be6 10. Nd5 Bf5
1966 Szombathely – Round 1 – Bronstein, David I – 1/2-1/2 – Flesch, János – G1 1. c4 c5 2. g3 g6 3. d4 cxd4 4. Qxd4 Nf6 5. Nc3 Nc6 6. Qd2 Bg7 7. Bg2 O-O 8. Nh3 Na5 9. c5 Nc4 10. Qf4 d5
1969 Skopje Skopje MKD – Round ? – Kholmov, Ratmir D – 1/2-1/2 – Matulovic, Milan – G1 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. f4 Nc6 5. Nf3 e6 6. Nc3 Nge7 7. b3 O-O 8. Bb2 d5 9. Na4 Bxb2 10. Nxb2 b6
6. Zurich Opening Blitz 2017 – Round 3.1 – Nakamura, Hikaru – 1-0 – Gelfand, Boris – G9 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. e3 e6 5. d4 cxd4 6. exd4 Ne7 7. Nc3 O-O 8. d5 exd5 9. cxd5 d6 10. Nf3 Bg4
Bugojno 1980 – Round 4 – Larsen, Bent – 1-0 – Tal, Mikhail – G12 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. e3 Nc6 5. Ne2 d6 6. Nbc3 Bd7 7. b3 a6 8. Bb2 b5 9. d3 Rb8 10. Qd2 Qa5
Bugojno 1984 – Round 1 – Larsen, Bent – 0-1 – Tal, Mikhail – G3 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. e3 Nf6 5. Nc3 e6 6. Nge2 O-O 7. O-O Nc6 8. Nf4 b6 9. b3 Ba6 10. Bb2 d5
Corus 2002 – Round 2 – Gurevich, Mikhail – 1/2-1/2 – Leko, Peter – G8 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. e3 e6 5. d4 cxd4 6. exd4 Ne7 7. d5 exd5 8. cxd5 d6 9. Ne2 Bg4 10. Nbc3 O-O
FIDE Candidates 2016 – Round 1.2 – Nakamura, Hikaru – 1/2-1/2 – Caruana, Fabiano – G2 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. e3 e6 5. d4 cxd4 6. exd4 Ne7 7. d5 exd5 8. cxd5 d6 9. Nc3 Nd7 10. Nf3 O-O
Interpolis 1982 – Round 1 – Larsen, Bent – 0-1 – Browne, Walter Shawn – G1 1. c4 c5 2. g3 g6 3. d4 cxd4 4. Qxd4 Nf6 5. Bg2 Nc6 6. Qd2 Bg7 7. Nc3 O-O 8. Nh3 Na5 9. Qd3 Qc7 10. Nd5 Nxd5
Moscow Superblitz 2006 – Round 18 – Grischuk, Alexander – 1/2-1/2 – Malakhov, Vladimir – G54 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. e3 Nc6 5. Ne2 e6 6. d4 cxd4 7. exd4 d5 8. c5 Nge7 9. Nbc3 O-O 10. O-O Nf5
NAO Masters 2002 – Round 1 – Bareev, Evgeny – 1-0 – Leko, Peter – G1 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. e3 Nc6 5. Ne2 e6 6. d4 cxd4 7. exd4 Nge7 8. d5 Ne5 9. dxe6 dxe6 10. Qxd8+ Kxd8
Saint Louis Blitz 2017 – Round 4.4 – Nakamura, Hikaru – 1/2-1/2 – Kasparov, Garry – G19 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. e3 h5 5. d4 h4 6. Nc3 Nc6 7. d5 Bxc3+ 8. bxc3 Ne5 9. Nf3 Nxf3+ 10. Bxf3 d6
SportAccord Rapid Men 2012 – Round 7.6 – Ivanchuk, Vasyl – 0-1 – Leko, Peter – G52 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. e3 Nf6 5. Nc3 e6 6. Nge2 O-O 7. d4 cxd4 8. exd4 d5 9. b3 Nc6 10. O-O dxc4
World Blitz 2016 – Round 16.3 – Nakamura, Hikaru – 1-0 – Dominguez Perez, Leinier – G643 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. e3 Nc6 5. Ne2 e5 6. Nbc3 Nge7 7. O-O O-O 8. a3 a5 9. d3 d6 10. Rb1 Rb8
World Blitz 2016 – Round 19.3 – Nakamura, Hikaru – 0-1 – Grischuk, Alexander – G756 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. e3 e6 5. d4 cxd4 6. exd4 d5 7. cxd5 exd5 8. Nc3 Ne7 9. Nge2 Nbc6 10. O-O O-O
World Rapid 2019 – Round 14.5 – Nepomniachtchi, Ian – 1/2-1/2 – Grischuk, Alexander – G920 1. c4 g6 2. g3 c5 3. Bg2 Bg7 4. e3 Nf6 5. Nc3 e6 6. Nge2 O-O 7. O-O Nc6 8. d4 cxd4 9. exd4 d5 10. cxd5 1/2-1/2
Zurich Korchnoi CC 2017 – Round 7.1 – Nakamura, Hikaru – 1/2-1/2 – Anand, Viswanathan – G25 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. e3 e6 5. d4 cxd4 6. exd4 d5 7. cxd5 exd5 8. Nc3 Ne7 9. Nge2 Nbc6 10. O-O O-O

A30a — Symmetrical (1956)

1.c4 c5 2.g3 g6

Les coups candidats

3.Bg2 — 95.9% (7076 parties)

Ambassadeurs : Poldauf, Dirk (23x), Adorjan, Andras (21x), Foisor, Ovidiu-Doru (21x), Gurevich, Valery M. (19x), Andersson, Ulf (19x), Larsen, Bent Ravn (17x), Seirawan, Yasser (16x), Beavan, Robert (16x)

3.Nc3 — 2.8% (206 parties) →

Ambassadeurs : Tozer, Philip A (4x), Ryska, Jirí (3x), Suttles, Duncan (2x), Bukal, Vladimir Jr. (2x), Regiani, Rafael (2x), Kigigha, Bomo Lovet (2x), Smit, Frans P. (2x), Ruban, Evgeny (1x)

3.Nf3 — 1.0% (72 parties)

Ambassadeurs : Hennig, Dirk, Dr. (2x), Janz, Frerik (2x), Kaposztas, Miklos (2x), Raupp, Thomas (1x), Staller, Peter (1x), Agdestein, Simen (1x), Ftacnik, Lubomir (1x), Carvalho, Guillermo (1x)

3.d4 — 0.2% (14 parties)

Ambassadeurs : Maicherczyk, Georg (2x), Bronstein, David I (1x), Flesch, János (1x), Larsen, Bent Ravn (1x), Browne, Walter Shawn (1x), Toerber, Claus (1x), Ulrich, Heinz (1x), Ljubojevic, Ljubomir (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	3.Bg2	3.Nc3	3.Nf3	3.d4
<1800	574	94%	4%	2%	—
1800-2200	2982	96%	3%	1%	0%
2200-2600	2950	97%	2%	1%	0%
2600+	225	100%	—	—	—

Évolution par décennie (% des parties)

Décennie	N parties	3.Bg2	3.Nc3	3.Nf3	3.d4
1950s	21	95%	5%	—	—
1960s	96	96%	3%	—	1%
1970s	126	94%	6%	—	—
1980s	272	92%	4%	2%	2%
1990s	722	96%	2%	1%	1%
2000s	1556	96%	3%	1%	0%
2010s	3414	96%	3%	1%	0%
2020s	1168	97%	2%	1%	0%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
3.Bg2	96%	97%	▲ +0.8%
3.Nc3	3%	2%	▼ -0.6%
3.Nf3	1%	1%	-0.2%
3.d4	0%	0%	+0.1%

Joueurs célèbres

Champions du monde dans cette position

Carlsen, Magnus — 10 parties
Ding, Liren — 10 parties
Kramnik, Vladimir — 9 parties
Anand, Viswanathan — 7 parties
Gukesh D — 6 parties
Tal, Mikhail — 5 parties
Karpov, Anatoly — 4 parties
Botvinnik, Mikhail — 3 parties
Hou, Yifan — 1 partie
Kasparov, Garry — 1 partie

Parties historiques

3.Bg2 — 95.9% (7076 parties)

1952 — Heinicke, Herbert vs Levy, Pascal — 1-0 — Helsinki olm
1955 — Averbakh, Yuri L vs Yakovlev, Dmitry Nikolaevich — 1-0 — Voroshilovgrad
1956 — Portisch, Lajos vs Pogats, Jozsef Jr. — 1/2-1/2 — Budapest HUN
1956 — Perez Perez, Francisco Jose vs Toran Albero, Roman — 1/2-1/2 — Barcelona ESP
1956 — Botvinnik, Mikhail vs Gligoric, Sofija — 1-0 — Moskou olm

3.Nc3 — 2.8% (206 parties)

1958 — Peterson, Andrejs vs Bastrikov, Georgy — 1-0 — Tashkent UZB
1962 — Grob, Henry vs Staehelin, Adolf — 1-0 — Zurich SUI
1965 — Ruban, Evgeny vs Moehring, Guenther — 1/2-1/2 — Berlin East
1967 — Geher, Jozsef vs Varnusz, Egon — 1-0 — Budapest HUN
1970 — Pankratov, Valery Vladimirovich vs Ljavdansky, Vladimir — 1-0 — Leningrad RUS

3.Nf3 — 1.0% (72 parties)

1983 — Grigorian, Karen vs Eingorn, Vereslav S — 1-0 — Minsk BLR
1985 — Carvalho, Guillermo vs Rey, Enrique — 1-0 — La Hora
1987 — Raupp, Thomas vs Staller, Peter — 1/2-1/2 — Kassel GER tt Baden-
1988 — Agdestein, Simen vs Ftacnik, Lubomir — 1/2-1/2 — Thessaloniki olm
1988 — Hennig, Dirk, Dr. vs Sorri, Kari Juhani — 0-1 — Berlin op Berlin-West

3.d4 — 0.2% (14 parties)

1966 — Bronstein, David I vs Flesch, János — 1/2-1/2 — Szombathely
1980 — Maicherczyk, Georg vs Toerber, Claus — 1/2-1/2 — Hamburg GER
1980 — Maicherczyk, Georg vs Ulrich, Heinz — 1-0 — Hamburg GER
1982 — Larsen, Bent Ravn vs Browne, Walter Shawn — 0-1 — Tilburg NED
1987 — Ljubojevic, Ljubomir vs Adorjan, Andras — 1/2-1/2 — Szirak izt

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