Structure de pions
♔ Blancs ♚ Noirs
Pions doublés
Pions isolés
Arriérés
Chaînes ● f2→g3, h2→g3 ● d7→e6, f7→e6
Passés
Majorité
Cases
♔ Blancs ♚ Noirs
Cases fortes ● b5 (2v0)
Cases faibles
Centre ● e5 (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 4 (● c1, ● f1, ● a1, ● h1) 5 (● b8, ● 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

A34p — English: Symmetrical, 3 Knights, 3…e6 4.g3

1.c4 c5 2.Nc3 Nf6 3.Nf3 e6 4.g3 *   ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1
bR
bN
bB
bQ
bK
bB
bR
bP
bP
bP
bP
bP
bP
bP
bN
Case forte (2v0)
bP
wP
wN
wN
wP
wP
wP
wP
wP
wP
wP
wR
wB
wQ
wK
wB
wR
abcdefgh
Plans. Bg2 (Fianchetto, fou sur la grande diagonale — 80 % des parties) ; e4 (Occuper le centre — 3 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8
wR
wB
wK
wQ
wB
wR
wP
wP
wP
wP
wP
wP
wP
wN
wN
wP
bP
bN
bP
bP
bP
bP
bP
bP
bP
bR
bB
bK
bQ
bB
bN
bR
hgfedcba
Plans. ...b6 (Préparer le fianchetto — 66 % des parties) ; ...d5 (Occuper le centre — 17 % des parties) ; ...Nc6 (Développer b8 — 13 % des parties).
Avantages
Faiblesses
Diagonale active
Plans
Partie
1947 Leningrad ch-URS – Round 10 – Keres, Paul – 1-0 – Smyslov, Vladimir – G103
1. c4 Nf6 2. Nc3 c5 3. Nf3 e6 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Nc6 7. O-O Nc7 8. b3 Be7 9. Bb2 e5 10. Rc1 f6
1954 Kiev ch-URS – Round 1 – Shamkovich, Leonid – 1/2-1/2 – Averbakh, Yuri L – G23
1. c4 Nf6 2. Nc3 e6 3. Nf3 c5 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Nc6 7. d4 Nf6 8. e3 Be7 9. O-O O-O 10. b3 Qa5
1954 Leningrad master – Round ? – Gusev, Nikolay N – 0-1 – Rovner, Dmitry – G2
1. c4 e6 2. Nf3 Nf6 3. Nc3 c5 4. g3 Be7 5. Bg2 O-O 6. O-O Nc6 7. b3 d5 8. cxd5 Nxd5 9. Nxd5 exd5 10. d4 Bf6
1958 HUN Ch Budapest HUN – Round 2 – Sandor, Bela – 1/2-1/2 – Forintos, Gyozo V – G5
1. c4 c5 2. Nf3 Nf6 3. Nc3 e6 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Nc6 7. O-O Nc7 8. d3 Be7 9. Be3 e5 10. Nd2 Nd4
1958 YUG Ch 13th – Round 16 – Trifunovic, Petar – 1-0 – Janosevic, Dragoljub – G84
1. c4 Nf6 2. Nc3 e6 3. Nf3 c5 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Nc6 7. O-O Nc7 8. Qa4 Qd7 9. Rd1 e5 10. e3 Ne6
1960 CSR Ch – Round 9 – Rejfir, Josef – 1/2-1/2 – Cucka, Josef – G73
1. c4 Nf6 2. Nc3 e6 3. Nf3 c5 4. g3 b6 5. Bg2 Bb7 6. d4 cxd4 7. Qxd4 Nc6 8. Qf4 Qb8 9. Qxb8+ Rxb8 10. Bf4 Rc8
1965 Hungary – Round 1 – Flesch, János – 1/2-1/2 – Navarovszky, Laszlo – G112
1. Nf3 Nf6 2. c4 c5 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. d4 cxd4 7. Qxd4 Nc6 8. Qf4 Qb8 9. Qxb8+ Rxb8 10. O-O Be7
1965 URS-ch33 Tallinn EST – Round 1 – Polugaevsky, Lev – 1-0 – Bronstein, David I – G3
1. c4 Nf6 2. Nc3 e6 3. Nf3 c5 4. g3 b6 5. Bg2 Bb7 6. b3 Be7 7. Bb2 O-O 8. O-O d5 9. e3 Nbd7 10. Qe2 Rc8
1966 Kislovodsk – Round 7 – Geller, Efim P – 1/2-1/2 – Kholmov, Ratmir D – G41
1. Nf3 Nf6 2. c4 c5 3. Nc3 e6 4. g3 d5 5. cxd5 exd5 6. d4 Bg4 7. Bg2 Bxf3 8. Bxf3 cxd4 9. Qxd4 Nc6 10. Qa4 Bb4
1967 Capablanca Memorial – Round 5 – Larsen, Benjamin Holsko – 1/2-1/2 – Pachman, Ludek – G41
1. c4 Nf6 2. Nc3 c5 3. Nf3 e6 4. g3 b6 5. Bg2 Bb7 6. b3 Be7 7. Bb2 O-O 8. O-O d5 9. Ne5 Nbd7 10. f4 Qc8
1967 Copenhagen – Round 1 – Eising, Johannes – 1-0 – Boyd, H. – G3
1. c4 Nf6 2. Nf3 c5 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. d4 cxd4 7. Qxd4 Nc6 8. Qf4 d5 9. cxd5 exd5 10. O-O Bd6
1967 Olssons Memorial 6768 – Round 9 – Geller, Efim P – 1/2-1/2 – Kinnmark, Ove – G26
1. Nf3 Nf6 2. c4 e6 3. Nc3 c5 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Nc6 7. O-O Nxc3 8. dxc3 Qc7 9. Qc2 Be7 10. Rd1 h6
Corus A 2005 – Round 1 – Morozevich, Alexander – 1/2-1/2 – Van Wely, Loek – G1
1. c4 Nf6 2. Nc3 c5 3. g3 e6 4. Nf3 b6 5. e4 Bb7 6. d3 Nc6 7. Bg2 d6 8. O-O a6 9. d4 cxd4 10. Nxd4 Rc8
FIDE Candidates 2018 – Round 13.2 – Ding, Liren – 1/2-1/2 – Kramnik, Vladimir – G50
1. c4 e6 2. Nc3 c5 3. Nf3 Nf6 4. g3 b6 5. e4 Bb7 6. d3 d6 7. Bg2 g6 8. O-O Bg7 9. Re1 O-O 10. d4 cxd4
FIDE World Blitz Championship 2025 – Round 19 – Lazavik Denis – 1-0 – Yu Yangyi – G368
1. c4 Nf6 2. Nc3 c5 3. Nf3 e6 4. g3 b6 5. e4 Bb7 6. d3 d6 7. Bg2 g6 8. O-O Bg7 9. Re1 Nc6 10. d4 cxd4
FIDE World Blitz Championship 2025 – Round 19 – Lu Shanglei – 1/2-1/2 – Ihor Samunenkov – G370
1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. c3 d6 7. Be2 Nge7 8. O-O O-O 9. Qd2 h6 10. a4 Qg6
Interpolis 1980 – Round 1 – Portisch, Lajos – 1/2-1/2 – Ribli, Zoltan – G5
1. c4 Nf6 2. Nc3 e6 3. Nf3 c5 4. g3 b6 5. e4 Bb7 6. d3 d6 7. Bg2 g6 8. O-O Bg7 9. Ne1 Nc6 10. Nc2 O-O
Karen Asrian Memorial 2008 – Round 4 – Morozevich, Alexander – 0-1 – Sargissian, Gabriel – G5
1. c4 Nf6 2. Nc3 c5 3. g3 e6 4. Nf3 b6 5. e4 Bb7 6. d3 d6 7. Bg2 Be7 8. O-O O-O 9. Ng5 Nc6 10. f4 Nd7
Linares 1985 – Round 1 – Abad Rivas, Marta Lucia – 1/2-1/2 – Portisch, Lajos – G1
1. c4 c5 2. Nc3 Nf6 3. Nf3 e6 4. g3 b6 5. e4 Bb7 6. Qe2 Nc6 7. Bg2 d6 8. O-O g6 9. Rd1 e5 10. d3 Bg7
Manila Interzonal 1990 – Round 7 – Portisch, Lajos – 0-1 – Yudasin, Leonid – G115
1. c4 Nf6 2. Nc3 e6 3. Nf3 c5 4. g3 b6 5. e4 Bb7 6. d3 Be7 7. Bg2 O-O 8. O-O d6 9. h3 a6 10. b3 Bc6
Moscow 1981 – Round 1 – Smejkal, Jan – 0-1 – Portisch, Lajos – G5
1. c4 c5 2. Nf3 Nf6 3. Nc3 e6 4. g3 b6 5. e4 Bb7 6. d3 d6 7. Bg2 g6 8. b3 Bg7 9. Bb2 a6 10. O-O O-O
Rio de Janeiro Interzonal 1979 – Round 9 – Portisch, Lajos – 0-1 – Sunye Neto, Jaime – G27
1. c4 Nf6 2. Nc3 e6 3. Nf3 c5 4. g3 b6 5. e4 Bb7 6. d3 Be7 7. Bg2 O-O 8. O-O Nc6 9. d4 cxd4 10. Nxd4 Qc7
World Blitz 2015 – Round 13.50 – Jumabayev, Rinat – 1-0 – Bezold, Michael – G824
1. Nf3 c5 2. c4 Nf6 3. Nc3 e6 4. g3 a6 5. Bg2 Be7 6. O-O O-O 7. d4 cxd4 8. Nxd4 Qc7 9. Qb3 d6 10. Bd2 Nbd7
World Blitz 2015 – Round 5.61 – Rakhmanov, Aleksandr – 1/2-1/2 – Bezold, Michael – G326
1. c4 c5 2. Nc3 Nf6 3. g3 e6 4. Nf3 Be7 5. Bg2 a6 6. O-O O-O 7. d4 cxd4 8. Qxd4 Nc6 9. Qd1 Qc7 10. Bf4 d6
World Blitz 2019 – Round 3.47 – Anton Guijarro, David – 0-1 – Carlsson, Pontus – G197
1. Nf3 Nf6 2. c4 c5 3. Nc3 e6 4. g3 b6 5. e4 d6 6. d4 cxd4 7. Nxd4 Bb7 8. Bg2 a6 9. O-O Qc7 10. Re1 Be7

A34p — Symmetrical, 3 Knights (1947)
1.c4 c5 2.Nc3 Nf6 3.Nf3 e6 4.g3
Les coups candidats
4…b6 — 72.1% (8677 parties)
Ambassadeurs : Ftacnik, Lubomir (120x), Suba, Mihai (93x), Uhlmann, Wolfgang (72x), Ribli, Zoltan (42x), Browne, Walter Shawn (40x), Adorjan, Andras (37x), Gheorghiu, Florin (34x), Portisch, Lajos (29x)
4…d5 — 12.0% (1448 parties)
Ambassadeurs : Alburt, Lev (23x), Dlugy, Maxim (11x), Nunn, John D M (10x), Uhlmann, Wolfgang (10x), Adamski, Jan (8x), Vaganian, Rafael A (7x), Dubov, Daniil (7x), Portisch, Lajos (6x)
Ambassadeurs : Greenfeld, Alon (20x), Portisch, Lajos (10x), Magerramov, Elmar (10x), Korchnoi, Viktor (9x), Uhlmann, Wolfgang (8x), Huebner, Robert (6x), Parma, Bruno (6x), Polugaevsky, Lev (6x)
4…Be7 — 3.1% (373 parties)
Ambassadeurs : Dizdarevic, Emir (8x), Klinger, Josef (6x), Gross, Stefan (5x), Weyerstrass, Ronald (4x), Vaganian, Rafael A (3x), Haas, Stefan (3x), Kristmann, Uwe (3x), Molner, Mackenzie (3x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…b6 4…d5 4…Nc6 4…Be7
<1800 360 54% 16% 20% 6%
1800-2200 2965 68% 12% 15% 4%
2200-2600 7148 77% 11% 9% 2%
2600+ 427 78% 14% 8% 0%
Évolution par décennie (% des parties)
Décennie N parties 4…b6 4…d5 4…Nc6 4…Be7
1950s 69 68% 23% 7% 1%
1960s 114 50% 22% 26% 2%
1970s 595 59% 19% 15% 5%
1980s 1529 68% 17% 12% 2%
1990s 1941 73% 10% 12% 4%
2000s 3471 77% 8% 10% 3%
2010s 3386 75% 9% 11% 3%
2020s 928 59% 25% 13% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…b6 75% 59% ▼ -15.6%
4…d5 9% 25% ▲ +15.4%
4…Nc6 11% 13% ▲ +1.8%
4…Be7 3% 2% ▼ -1.0%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 10 parties
Karpov, Anatoly — 10 parties
Kasparov, Garry — 10 parties
Kramnik, Vladimir — 10 parties
Carlsen, Magnus — 10 parties
Anand, Viswanathan — 6 parties
Botvinnik, Mikhail — 5 parties
Ding, Liren — 5 parties
Ju, Wenjun — 2 parties
Gukesh D — 2 parties
Smyslov, Vladimir — 1 partie
Parties historiques
4…b6 — 72.1% (8677 parties)
1950 — Stahlberg, Gideon vs Keres, Paul — 0-1 — Budapest HUN
1950 — Gideon, Stahlberg hlberg vs Keres, Paul Petrovich — 0-1 — Candidates Tournament, Budape
1950 — Gawliczek, Andreas vs Keres, Paul — 0-1 — Schiavno Zdroj
1951 — Coosemans, Billy vs Boey, Josef — 1-0 — Antwerp BEL
1952 — Bronstein, David I vs Byvshev, Vasily — 1-0 — Moskou ch-URS
4…d5 — 12.0% (1448 parties)
1954 — Shamkovich, Leonid vs Averbakh, Yuri L — 1/2-1/2 — Kiev ch-URS
1955 — Stahlberg, Gideon vs Rellstab, Ludwig — 1-0 — Hamburg GER
1955 — Goldberg, Grigory A vs Ousatchi, Mark — 1/2-1/2 — Moscow RUS
1955 — Pavlik, Samuel vs Pogats, Jozsef Jr. — 1/2-1/2 — Prague CZE
1956 — Nielsen, Axel vs Bertholdt, Dieter — 1-0 — Copenhagen DEN
4…Nc6 — 11.4% (1369 parties)
1950 — Stahlberg, Gideon vs Kottnauer, Cenek — 1-0 — Amsterdam NED
1956 — Hultgren, Ralph vs Van Deene, Gerard — 1-0 — Fresno, CA
1956 — Bolbochan, Julio vs Miguel, Nahuel — 1/2-1/2 — Mar del Plata ARG
1959 — Petrosian, Tigran V. vs Keres, Paul Petrovich — 1/2-1/2 — Bled ct
1959 — Uhlmann, Wolfgang vs Bertholdt, Dieter — 1-0 — Dresden GER
4…Be7 — 3.1% (373 parties)
1954 — Gusev, Nikolay N vs Rovner, Dmitry — 0-1 — Leningrad RUS
1967 — Brostrom, Goran vs Forintos, Gyozo V — 0-1 — Vesely HUN_SWE
1968 — ABDELMUNEM SAAD vs Bazan, Gerardo — 1-0 — Cordoba CR Cordoba ARG
1971 — Stein, Leonid vs Damjanovic, Mato — 1/2-1/2 — Vrnjacka Banja SRB
1972 — Kaufman, Lawrence vs Popel, Stepan — 1-0 — US Open

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