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 semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte b5, paire de fous.
Faiblesses adverses : arriéré d7, Bc8 enfermé, Bf8 enfermé, roi noir au centre.
Problèmes : roi au centre, Bc1 enfermé, Bf1 enfermé, 4 pièces non développées (C1, F1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● e4 — Centre d4+e4, menace e5, libère Bf1
● d3 — Libérer Bc1
● h3 — Empêcher ...Bg4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : paire de fous.
Faiblesses adverses : Bc1 enfermé, Bf1 enfermé, roi blanc au centre.
Problèmes : roi au centre, Bc8 enfermé, Bf8 enfermé, arriéré d7, 5 pièces non développées (B8, C8, F8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...d6 — Libérer Bc8
● ...Nc6 — Développer Nb8
● ...Be7 — Développer Bf8
● ...Bg4 — Clouer Nf3

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

A34p — Symmetrical 3 Knights

1.c4 c5 2.Nc3 Nf6 3.Nf3 e6 4.g3

Eval: [+0.25]

Les coups candidats

4…b6 — 72.2% (8571 parties)

Ambassadeurs : Ftacnik, Lubomir (118x), Suba, Mihai (96x), Uhlmann, Wolfgang (74x), Ribli, Zoltan (45x), Browne, Walter Shawn (41x), Adorjan, Andras (38x), Gheorghiu, Florin (35x), Greenfeld, Alon (35x)

4…d5 — 11.9% (1409 parties)

Ambassadeurs : Alburt, Lev (24x), Adamski, Jan (12x), Dlugy, Maxim (12x), Uhlmann, Wolfgang (10x), Tal, Mikhail (10x), Nunn, John D M (9x), Brunner, Lucas (9x), Dubov, Daniil (8x)

4…Nc6 — 11.4% (1350 parties) →

Ambassadeurs : Greenfeld, Alon (20x), Korchnoi, Viktor (11x), Portisch, Lajos (9x), Magerramov, Elmar (9x), Uhlmann, Wolfgang (7x), Gruenfeld, Yehuda (7x), Zoebisch, Herbert (7x), Parma, Bruno (6x)

4…Be7 — 3.1% (372 parties)

Ambassadeurs : Dizdarevic, Emir (8x), Gross, Stefan (5x), Klinger, Josef (5x), Weyerstrass, Ronald (4x), Molner, Mackenzie (4x), Vaganian, Rafael A (3x), Quinteros, Miguel A. (2x), Najdorf, Miguel (2x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	4…b6	4…d5	4…Nc6	4…Be7
<1800	172	45%	17%	24%	9%
1800-2200	2236	66%	12%	16%	4%
2200-2600	7467	77%	11%	9%	2%
2600+	500	75%	16%	7%	1%

Évolution par décennie (% des parties)

Décennie	N parties	4…b6	4…d5	4…Nc6	4…Be7
1920s	2	50%	—	—	—
1930s	2	—	—	100%	—
1940s	8	62%	38%	—	—
1950s	69	68%	23%	7%	1%
1960s	115	50%	22%	27%	2%
1970s	591	59%	20%	15%	5%
1980s	1525	68%	17%	12%	2%
1990s	1938	73%	10%	12%	4%
2000s	3459	77%	8%	10%	3%
2010s	3360	75%	9%	11%	3%
2020s	799	60%	24%	13%	2%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
4…b6	75%	60%	▼ -15.3%
4…d5	9%	24%	▲ +14.9%
4…Nc6	11%	13%	▲ +1.7%
4…Be7	3%	2%	▼ -0.8%

Joueurs célèbres

Champions du monde dans cette position

Smyslov, Vladimir — 10 parties
Tal, Mikhail — 10 parties
Karpov, Anatoly — 10 parties
Kasparov, Garry — 10 parties
Karpov, Aleksandr — 10 parties
Kramnik, Vladimir — 10 parties
Carlsen, Magnus — 10 parties
Anand, Viswanathan — 6 parties
Botvinnik, Mikhail — 5 parties
Ding, Liren — 4 parties
Ju, Wenjun — 2 parties
Gukesh D — 2 parties
Euwe, Max — 1 partie

Parties historiques

4…b6 — 72.2% (8571 parties)

1927 — Nimzowitsch, Aron vs Colle, Edgar — 1/2-1/2 — Bad Niendorf
1946 — Golombek, Harry vs Combe, Robert F — 1/2-1/2 — Nottingham ch-BCF
1949 — Gideon, Stahlberg hlberg vs Pachman, Ludek — 1/2-1/2 — Trencianske Teplice SVK
1949 — Chekhover, Vitaly vs Rovner, Dmitry — 1/2-1/2 — Vilnius LTU
1949 — Chekhover, Vitaly vs Pavlenko, Valerya — 1-0 — Odessa UKR

4…d5 — 11.9% (1409 parties)

1947 — Keres, Paul vs Smyslov, Vladimir — 1-0 — Leningrad ch-URS
1947 — Keres Paul Petrovich vs Smyslov, Vasily — 1-0 — Leningrad RUS
1948 — Tartakower, Savielly vs Barcza, Gedeon — 1/2-1/2 — Karlovy Vary
1954 — Shamkovich, Leonid vs Averbakh, Yuri L — 1/2-1/2 — Kiev ch-URS
1955 — Goldberg, Grigory A vs Ousatchi, Mark — 1/2-1/2 — Moscow RUS

4…Nc6 — 11.4% (1350 parties)

1933 — Flohr, Salo vs Grob, Henry — 1-0 — Arosa
1937 — Lundin, Erik vs Andersen, Erik — 1-0 — Copenhagen DEN
1950 — Stahlberg, Gideon vs Kottnauer, Cenek — 1-0 — Amsterdam NED
1956 — Bolbochan, J. vs Najdorf, Rafael — 1/2-1/2 — Mar del Plata ARG
1956 — Hultgren, Ralph vs Van Deene, Gerard — 1-0 — Fresno, CA

4…Be7 — 3.1% (372 parties)

1954 — Gusev, Nikolay N vs Rovner, Dmitry — 0-1 — Leningrad RUS
1967 — Brostrom, Goran vs Forintos, Gyozo V — 0-1 — Veseli nad Moravou
1968 — Saadi, Julio 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

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	● d7
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	semi-ouvert
Ruptures	● d2-d3, ● e2-e3	● …d7-d6, ● …d7-d5, ● …e6-e5

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 – 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

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