A03d — Bird: 1…d5 2.Nf3 g6 3.g3

1.f4 d5 2.Nf3 g6 3.g3 Bg7 4.Bg2 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte e5, case forte g5, paire de fous.
Faiblesses adverses : Bc8 enfermé, roi noir au centre.
Problèmes : roi au centre, Bc1 enfermé, Bg2 enfermé, 4 pièces non développées (B1, C1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● Nbd2 — Développer Nb1
● d3 — Libérer Bc1
● h3 — Empêcher ...Bg4
● c3 — Préparer d4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte f5, avant-poste f5(F), Bg7 actif, paire de fous.
Faiblesses adverses : Bc1 enfermé, Bg2 enfermé, roi blanc au centre.
Problèmes : roi au centre, Bc8 enfermé, 5 pièces non développées (B8, G8, C8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...Nbd7 — Développer Nb8
● ...Nf6 — Développer Ng8
● ...Bg4 — Développer Bc8, clouer Nf3
● ...c6 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

A03d —

1.f4 d5 2.Nf3 g6 3.g3 Bg7 4.Bg2

Eval: [-0.31]

Les coups candidats

4…Nf6 — 47.8% (1480 parties) →

Ambassadeurs : Arnold, Robert G (75x), Becx, Cesar (15x), Noire, Eric (13x), Gretencord, Ulrich (11x), Schmidt, Torsten (11x), Bocharov, Ivan (10x), Panbukchian, Valentin (10x), Jakubiec, Artur (9x)

4…c5 — 18.0% (558 parties)

Ambassadeurs : Weisenburger, Horst (5x), Gonzalez Acosta, Bernal (5x), Danielsen, Henrik (4x), Grunberg, Mihai-Lucian (4x), Rendle, Thomas E (4x), Szymczak, Rafal (4x), Pletnev, Evgeniy (4x), Panbukchian, Valentin (4x)

4…c6 — 14.5% (448 parties)

Ambassadeurs : Jakubiec, Artur (7x), Grunberg, Mihai-Lucian (6x), Pogosian, Vladimir (6x), Becx, Cesar (6x), Muzychuk, Anna (5x), Noire, Eric (4x), Szelag, Marcin (4x), Praxmarer, Christian (4x)

4…Nh6 — 12.9% (399 parties)

Ambassadeurs : Arnold, Robert G (8x), Szymczak, Rafal (7x), Jakubiec, Artur (6x), Grunberg, Mihai-Lucian (5x), Pogosian, Vladimir (5x), Buecker, Stefan (4x), Rodriguez Vila, Andres (4x), Balashov, Yuri (4x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	4…Nf6	4…c5	4…c6	4…Nh6
<1800	59	58%	10%	15%	14%
1800-2200	1077	51%	21%	11%	11%
2200-2600	1449	43%	16%	18%	17%
2600+	22	55%	9%	23%	14%

Évolution par décennie (% des parties)

Décennie	N parties	4…Nf6	4…c5	4…c6	4…Nh6
1940s	1	—	100%	—	—
1950s	15	53%	27%	7%	7%
1960s	67	51%	22%	6%	7%
1970s	107	48%	22%	7%	11%
1980s	122	50%	23%	10%	7%
1990s	478	38%	22%	19%	10%
2000s	807	46%	17%	17%	14%
2010s	1237	51%	16%	13%	15%
2020s	260	55%	18%	13%	10%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
4…Nf6	51%	55%	▲ +3.5%
4…c5	16%	18%	▲ +2.5%
4…c6	13%	13%	-0.3%
4…Nh6	15%	10%	▼ -4.7%

Joueurs célèbres

Champions du monde dans cette position

Karpov, Aleksandr — 1 partie
Ju, Wenjun — 1 partie

Parties historiques

4…Nf6 — 47.8% (1480 parties)

1952 — Stoltz, De Raven vs Alexander, Conol Hugh — 1/2-1/2 — It Belgrade YUG
1954 — Pimenov, Serafim vs Ilivitsky, Georgy A — 1/2-1/2 — Erevan ARM
1955 — Larsen, Bent Ravn vs Hansen, Victor — 1-0 — Aalborg DEN
1956 — Liebert, Heinz vs Zirngibl, Albert — 1/2-1/2 — Leipzig ch GDR
1957 — Golz, Eloise vs Uhlmann, Alexander — 1/2-1/2 — Gotha

4…c5 — 18.0% (558 parties)

1949 — Markov, Bozidar vs Ivanov, Pavel — 0-1 — Sofia BUL
1954 — Basjuni, Sad Zaglul vs Stahlberg, Gideon — 0-1 — Prague CZE
1957 — Golz, Werner vs Uhlmann, Wolfgang — 1/2-1/2 — Gotha GER
1957 — Karau, Anita vs Keller-Hermann, Edith — 0-1 — Soemmerda
1959 — Acosta Fabian, Janna Paloma vs Jares, Jakub — 1/2-1/2 — Bratislava SVK

4…c6 — 14.5% (448 parties)

1953 — Stulik, Vlastimil vs Podgorny, Jiri — 1/2-1/2 — Prague CZE
1964 — Haag, Ervin vs San Martin Sanguinetti, Vicente — 1/2-1/2 — CCOL4 prel corr
1966 — Gresser, Gisela Kahn vs Larsen, Ingrid — 1/2-1/2 — Oberhausen
1967 — Tilstra, Arjen vs Van Ommen, A. — 0-1 — Beverwijk NED
1968 — Mozes, Ervin vs Ghizdavu, Dumitru — 1-0 — Bucharest ROU

4…Nh6 — 12.9% (399 parties)

1955 — Ratolistka, Josef vs Alster, Ladislav — 1/2-1/2 — Prague CZE
1960 — Kolvig, Bent vs Johansson, Martin 1979 — 1-0 — Leipzig GER
1966 — Schorr Blank, Leon vs Szabo, Laszlo — 0-1 — Havana CUB
1967 — Knezevic, Milorad vs Kovacevic, Vlatko — 1-0 — Kraljevo
1967 — Kirpichnikov, Vladimir vs Balashov, Yuri — 0-1 — Riga LAT

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● h2→g3, g3→f4	● f7→g6, h7→g6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e5 (2v1), ● g5 (2v0)	● f5 (2v0)
Cases faibles	—	—
Centre	● e5 (2v1)	● d5 (1v0), ● e4 (1v0)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bg2	● Bg2 Enfermé (mob. 2)
Bg7		● Bg7 Actif (mob. 7)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	4 (b1, 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	semi-ouvert
Ruptures	● c2-c3, ● d2-d3, ● e2-e3, ● f4-f5	● …c7-c6, ● …c7-c5, ● …d5-d4, ● …e7-e6, ● …e7-e5, ● …f7-f6, ● …f7-f5

Partie
1953 CSR Ch Prague – Round 6 – Stulik, Vlastimil – 1/2-1/2 – Podgorny, Jiri – G36 1. f4 d5 2. Nf3 g6 3. g3 Bg7 4. Bg2 c6 5. c4 dxc4 6. Na3 Qd5 7. O-O Nh6 8. Kh1 Ng4 9. Ne5 Qc5 10. Naxc4 Bxe5
1954 Prague zt – Round 9 – Basjuni, Sad Zaglul – 0-1 – Stahlberg, Gideon – G49 1. f4 d5 2. Nf3 g6 3. g3 Bg7 4. Bg2 c5 5. c3 Nc6 6. d4 cxd4 7. cxd4 Nh6 8. Nc3 O-O 9. O-O Be6 10. e3 f6
1957 It – Round 10 – Golz, Werner – 1/2-1/2 – Uhlmann, Wolfgang – G16 1. f4 d5 2. Nf3 g6 3. g3 Bg7 4. Bg2 c5 5. O-O Nc6 6. d3 Nf6 7. c3 O-O 8. Qc2 Re8 9. e4 e5 10. Nxe5 Nxe5
1959 Cerveny Kostelec – Round ? – Fabian, Jaroslav – 0-1 – Zíta, František – G27 1. f4 d5 2. Nf3 g6 3. g3 Bg7 4. Bg2 Nd7 5. O-O e5 6. fxe5 Nxe5 7. Nxe5 Bxe5 8. c4 dxc4 9. Qa4+ c6 10. Qxc4 Qd4+
1959 CSR Ch – Round 17 – Acosta Fabian, Janna Paloma – 1/2-1/2 – Jares, Jakub – G139 1. f4 d5 2. Nf3 g6 3. g3 Bg7 4. Bg2 c5 5. d3 Nc6 6. Nc3 Nf6 7. Ne5 Nxe5 8. fxe5 Ng4 9. Nxd5 e6 10. Nf6+ Nxf6
1960 Buenos Aires ch-ARG – Round 4 – Pelikan, Anna – 1/2-1/2 – Schweber – G26 1. f4 d5 2. Nf3 g6 3. g3 Bg7 4. Bg2 h5 5. Nc3 Nc6 6. d3 d4 7. Ne4 Nh6 8. c4 dxc3 9. Nxc3 Nf5 10. e3 e5
1960 Olympiad prel III – Round 7 – Kolvig, Bent – 1-0 – Johansson, Martin 1979 – G54 1. g3 d5 2. Bg2 g6 3. f4 Bg7 4. Nf3 Nh6 5. O-O Nf5 6. d3 d4 7. c3 c5 8. e4 dxe3 9. Na3 Nc6 10. Nc4 O-O
1960 Sarajevo – Round 4 – Larsen, Benjamin Holsko – 1-0 – Bogdanovic, Radivoje – G30 1. g3 g6 2. Bg2 Bg7 3. f4 d5 4. Nf3 c5 5. O-O Nc6 6. Nc3 e6 7. d3 Nge7 8. e4 O-O 9. Bd2 f6 10. a3 d4
1966 La Habana olm prel – Round 3 – Schorr Blank, Leon – 0-1 – Szabo, Laszlo – G118 1. g3 g6 2. f4 d5 3. Bg2 Bg7 4. Nf3 Nh6 5. O-O O-O 6. c3 Nd7 7. d3 c6 8. Kh1 Qb6 9. e4 dxe4 10. dxe4 e5
1966 Oberhausen ol women – Round 12 – Gresser, Gisela Kahn – 1/2-1/2 – Larsen, Ingrid – G61 1. f4 d5 2. Nf3 g6 3. g3 Bg7 4. Bg2 c6 5. c3 Bg4 6. Ne5 Be6 7. d4 f6 8. Nd3 Nd7 9. Nd2 Nh6 10. e4 Bg4
1967 Capablanca Memorial – Round 16 – Rossetto, Hector – 1/2-1/2 – Cobo Arteaga, Eldis – G145 1. f4 d5 2. Nf3 g6 3. g3 Bg7 4. Bg2 c5 5. d3 Nc6 6. O-O Nf6 7. c3 O-O 8. Na3 Rb8 9. e4 dxe4 10. dxe4 Qxd1
1967 HUN Ch – Round 14 – Tompa, Janos – 1-0 – Barcza, Gedeon – G54 1. f4 d5 2. Nf3 g6 3. g3 Bg7 4. Bg2 Nd7 5. O-O Nh6 6. d3 c6 7. Nc3 Nf5 8. e4 dxe4 9. dxe4 Qb6+ 10. Kh1 Ne3
1967 Kraljevo – Round 3 – Knezevic, Milorad – 1-0 – Kovacevic, Vlatko – G10 1. f4 d5 2. Nf3 g6 3. g3 Bg7 4. Bg2 Nh6 5. d3 d4 6. c3 c5 7. e4 dxe3 8. Bxe3 Qb6 9. Qe2 O-O 10. h3 Bf5
1968 IBM I – Round 13 – Bilek, Istvan – 0-1 – Langeweg, Kick – G47 1. g3 d5 2. Bg2 g6 3. f4 Bg7 4. Nf3 c5 5. O-O Nc6 6. d3 d4 7. c4 Nh6 8. Na3 Nf5 9. Nc2 O-O 10. Qe1 a5
1968 Lugano ol (Men) qual-E – Round 1 – Zwaig, Arne – 1-0 – Camara, Helder – G20 1. g3 g6 2. Bg2 Bg7 3. f4 d5 4. Nf3 Nc6 5. O-O Nf6 6. c3 O-O 7. d3 Ne8 8. Be3 Nd6 9. Bf2 b6 10. Nfd2 e6
1969 Capablanca Memorial – Round 11 – Garcia Martinez, Salomon – 0-1 – Uhlmann, Wolfgang – G85 1. f4 d5 2. Nf3 g6 3. g3 Bg7 4. Bg2 c5 5. O-O Nc6 6. d3 Nf6 7. c3 O-O 8. Qc2 d4 9. Na3 Nd5 10. Bd2 Bg4
1969 Hoogovens – Round 5 – Lombardy, William J – 1-0 – Langeweg, Kick – G45 1. g3 d5 2. f4 g6 3. Nf3 Bg7 4. Bg2 c5 5. O-O Nc6 6. Nc3 Nf6 7. d3 d4 8. Na4 Nd7 9. c4 a6 10. Bd2 O-O
1969 It Bad Pyrmont GER – Round 3 – Tompa, Janos – 1/2-1/2 – Vogel, Jaap – G5 1. f4 d5 2. Nf3 g6 3. g3 Bg7 4. Bg2 Nc6 5. O-O Bg4 6. c4 d4 7. Qa4 Qd7 8. e4 Bxf3 9. Bxf3 e6 10. d3 a5
1969 Raach zt – Round 9 – Zwaig, Arne – 1/2-1/2 – Drimer, Dolfi – G88 1. g3 d5 2. f4 g6 3. Nf3 Bg7 4. Bg2 c5 5. d3 Nc6 6. c3 Nf6 7. O-O O-O 8. Ne5 Qc7 9. Nxc6 Qxc6 10. e4 dxe4
Amber Blindfold 2006 – Round 2 – Aronian, Levon – 1-0 – Topalov, Veselin – G8 1. f4 d5 2. Nf3 g6 3. g3 Bg7 4. Bg2 c6 5. O-O Bg4 6. Ne5 h5 7. h3 Be6 8. d3 Nh6 9. Qe1 Nd7 10. Nf3 Qb6+
World Blitz 2018 – Round 16.52 – Paravyan, David – 1/2-1/2 – Vokhidov, Shamsiddin – G970 1. f4 d5 2. Nf3 g6 3. g3 Bg7 4. Bg2 Nh6 5. O-O Nf5 6. e3 c5 7. d3 O-O 8. c3 Nd6 9. Qe2 Nc6 10. e4 dxe4
World Blitz 2021 – Round 13.31 – Harsha Bharathakoti – 1-0 – Wojtaszek, Radoslaw – G770 1. f4 d5 2. Nf3 g6 3. g3 Bg7 4. Bg2 c6 5. e3 Nf6 6. O-O O-O 7. d3 a5 8. Nc3 b5 9. Ne5 b4 10. Ne2 Ba6

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