A02r — Bird: 1..Nf6 2.Nf3 c5

1.f4 Nf6 2.Nf3 c5 * ○ Trait aux Blancs

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, Bf8 enfermé, roi noir au centre.
Problèmes : roi au centre, Bc1 enfermé, Bf1 enfermé, 5 pièces non développées (B1, C1, F1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● e4 — Centre d4+e4, menace e5, libère Bf1
● Nbd2 — Développer Nb1
● 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, 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
● ...Bd6 — Développer Bf8
● ...Bg4 — Clouer Nf3

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

A02r —

1.f4 Nf6 2.Nf3 c5

Eval: [-0.19]

Les coups candidats

3.e3 — 44.3% (596 parties)

Ambassadeurs : Arnold, Robert G (10x), Gal, Lajos (7x), Brodie, Hugh (5x), Tartakower, Savielly (3x), Christensen, Alfred (3x), Wikstrom, Bo-Gunnar (3x), Naegele, Hans-Juergen (3x), Jensen, Kristian Rohde (3x)

3.g3 — 25.9% (349 parties)

Ambassadeurs : Petro, Jozsef (6x), Blevins, Kenneth (3x), Panbukchian, Valentin (3x), Rocha, Vitor Firmo de Souza (3x), Weisenburger, Horst (3x), Macedo, Maximo Valerio (3x), Becx, Cesar (3x), Kaminski, Janusz (3x)

3.b3 — 16.1% (217 parties)

Ambassadeurs : Nautsch, Werner (4x), Jaderholm, Bo (3x), Vykopal, Jan (2x), Pribanich, Branko (2x), Orgon, Dusan (2x), Ansola Marquinez, Alberto (2x), Ries, Jutta (2x), Alexandre Bisquert, Francisco (2x)

3.d3 — 9.2% (124 parties)

Ambassadeurs : Pelikán, Jiří (4x), Pelikan, Jan (2x), Podlesnik, Bogdan (2x), Bryntse, Arne (2x), Hayward, Keith (2x), Babionyshev, Vladimir (2x), Racioppo, Paolo (2x), Pogosian, Vladimir (2x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	3.e3	3.g3	3.b3	3.d3
<1800	64	56%	20%	12%	9%
1800-2200	602	47%	25%	16%	8%
2200-2600	309	30%	39%	14%	11%
2600+	2	—	50%	—	50%

Évolution par décennie (% des parties)

Décennie	N parties	3.e3	3.g3	3.b3	3.d3
1910s	1	100%	—	—	—
1930s	8	62%	—	12%	25%
1940s	6	67%	—	33%	—
1950s	25	56%	20%	—	12%
1960s	34	56%	15%	6%	21%
1970s	40	50%	12%	20%	12%
1980s	70	49%	21%	23%	7%
1990s	236	39%	32%	21%	6%
2000s	412	48%	22%	16%	10%
2010s	451	43%	27%	14%	9%
2020s	62	24%	47%	16%	10%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
3.e3	43%	24%	▼ -19.3%
3.g3	27%	47%	▲ +19.5%
3.b3	14%	16%	▲ +1.9%
3.d3	9%	10%	▲ +1.0%

Joueurs célèbres

Champions du monde dans cette position

Carlsen, Magnus — 1 partie

Parties historiques

3.e3 — 44.3% (596 parties)

1911 — Tartakower, Savielly vs Jaffe, Charles — 1-0 — Carlsbad CZE
1932 — Kapfer Ewald vs Loose, Walter — 1/2-1/2 — Bad Ems GER
1933 — Eliskases, Erich vs Menchik, Vera Frantsevna — 1-0 — Hastings ENG
1937 — Kuppe, Wilhelm vs Brinckmann, Alfred — 1-0 — Berlin GER
1937 — Pelikan, Jan vs Graf, Sascha — 1-0 — Prague CZE

3.g3 — 25.9% (349 parties)

1955 — Feuerstein, Arthur vs Kevitz, Alexander — 1/2-1/2 — New York, NY USA
1955 — Feuerstein, Arthur vs Pavey, Max — 1-0 — New York, NY USA
1957 — Gesquiere, Willy vs Boey, Josef — 0-1 — Blankenberge
1959 — Uusi, Gunnar vs Mikkov, Uno — 1-0 — Tartu
1959 — Wexler, Francisco vs Foguelman, Alberto — 0-1 — Buenos Aires ARG

3.b3 — 16.1% (217 parties)

1939 — Hasenfuss, Wolfgang vs Koblencs, Alexander — 1/2-1/2 — Kemeri / Riga
1940 — Keller, Hans vs Mueller, Hans — 0-1 — Vienna AUT
1940 — Keller-Hermann, Edith vs Mueller von Blumencron, Heiko — 0-1 — Wenen
1963 — De Huguet, Soledad Gonzalez vs De Oliveira Noemi — 1/2-1/2 — Fortaleza BRA
1968 — Nagy, Ervin vs Honfi, K. — 1/2-1/2 — HUN

3.d3 — 9.2% (124 parties)

1934 — Riumin, Nikolai vs Lisitsin, Georgy — 1/2-1/2 — Leningrad ch-URS
1937 — Pelikán, Jiří vs Bluemich, Max — 1-0 — Bad Elster
1955 — Pelikán, Jiří vs Corte, Cesar J — 1-0 — Buenos Aires ARG
1958 — Pelikán, Jiří vs Guimard, Carlos E — 1-0 — Buenos Aires ARG
1959 — Pelikán, Jiří vs Foguelman, Alberto — 1/2-1/2 — Quilmes

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	—
Passés	—	—
Majorité	—	—

Cases

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

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bf1	● Bf1 Non développé (mob. 0)
Bc8		● Bc8 Non développé (mob. 0)
Bf8		● Bf8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	5 (b1, 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	● c2-c3, ● d2-d3, ● e2-e3, ● f4-f5	● …c5-c4, ● …d7-d6, ● …d7-d5, ● …e7-e6, ● …e7-e5

Partie
1911 Karlsbad – Round 1 – Tartakower, Savielly – 1-0 – Jaffe, Charles – G256 1. f4 Nf6 2. Nf3 c5 3. e3 Nc6 4. b3 d5 5. Bb5 Qb6 6. c4 a6 7. Bxc6+ bxc6 8. Nc3 Bf5 9. Na4 Qa7 10. Ne5 Rc8
1933 Hastings3334 – Round 3 – Eliskases, Erich – 1-0 – Menchik, Vera Frantsevna – G15 1. f4 Nf6 2. Nf3 c5 3. e3 g6 4. b3 Bg7 5. Bb2 O-O 6. Be2 Nc6 7. O-O Qc7 8. c4 d6 9. Qc1 e5 10. fxe5 dxe5
1934 Leningrad ch-URS – Round 1 – Riumin, Nikolai – 1/2-1/2 – Lisitsin, Georgy – G145 1. f4 c5 2. Nf3 Nf6 3. d3 d5 4. e3 Nc6 5. Be2 g6 6. O-O Bg7 7. Qe1 b6 8. Nbd2 O-O 9. Qh4 Ba6 10. Rf2 Qc7
1937 Bad Elster – Round 9 – Pelikán, Jiří – 1-0 – Bluemich, Max – G29 1. f4 Nf6 2. Nf3 c5 3. d3 d5 4. e3 g6 5. Be2 Bg7 6. O-O O-O 7. Qe1 Nc6 8. Qh4 Qd6 9. Nc3 a6 10. e4 dxe4
1937 Prague – Round 5 – Pelikan, Jan – 1-0 – Graf, Sascha – G29 1. f4 Nf6 2. Nf3 c5 3. e3 g6 4. d4 cxd4 5. exd4 Bg7 6. Bd3 d6 7. O-O O-O 8. Qe1 Nc6 9. c3 a6 10. Qh4 Qa5
1939 Kemeri / Riga – Round ? – Hasenfuss, Wolfgang – 1/2-1/2 – Koblencs, Alexander – G94 1. f4 Nf6 2. Nf3 c5 3. b3 g6 4. Bb2 d5 5. e3 Bg7 6. c4 O-O 7. cxd5 Nxd5 8. Bxg7 Kxg7 9. Nc3 Nc6 10. Nxd5 Qxd5
1943 Mar del Plata – Round 10 – Pelikan, Jan – 1/2-1/2 – Guimard, Carlos E – G72 1. f4 Nf6 2. Nf3 c5 3. e3 g6 4. Be2 Bg7 5. O-O O-O 6. Qe1 d5 7. d3 Nc6 8. Qh4 Qb6 9. Kh1 Bg4 10. Nbd2 Rad8
1950 Sorrento ch ITA – Round 13 – Ricci, Piergiorgio – 0-1 – Giustolisi, Alberto – G35 1. f4 Nf6 2. Nf3 c5 3. e3 g6 4. b3 Bg7 5. Bb2 O-O 6. Be2 Nc6 7. O-O d6 8. Qc1 Bg4 9. d3 Rc8 10. c4 Re8
1950 Sorrento ch ITA – Round 4 – Ricci, Piergiorgio – 1/2-1/2 – Nestler, Vincenzo – G9 1. f4 Nf6 2. Nf3 c5 3. e3 Nc6 4. b3 g6 5. Bb2 Bg7 6. Be2 d6 7. O-O a6 8. c4 O-O 9. h3 Rb8 10. d4 Ne4
1950 URS Ch sf – Round 9 – Chistiakov, Alexander – 0-1 – Pavlov, Mircea-Sergiu-Aurelian – G18 1. f4 c5 2. Nf3 Nf6 3. e3 Nc6 4. Be2 g6 5. O-O Bg7 6. d3 O-O 7. Qe1 d5 8. c3 Bg4 9. Nbd2 d4 10. e4 dxc3
1951 Marianske Lazne zt – Round 1 – Basjuni, Sad Zaglul – 1/2-1/2 – Benko, Pal – G88 1. f4 Nf6 2. Nf3 c5 3. c4 g6 4. Nc3 Nc6 5. e4 d6 6. d3 Bg7 7. Be2 O-O 8. O-O Nd4 9. Nxd4 cxd4 10. Nd5 Nd7
1952 Helsinki olm – Round 1 – Pirc, Vasja – 1-0 – Molnar, Istvan – G199 1. f4 Nf6 2. Nf3 c5 3. e3 g6 4. b3 Bg7 5. Bb2 O-O 6. Be2 Nc6 7. O-O d6 8. c4 Qc7 9. Nc3 a6 10. d4 cxd4
1955 Buenos Aires – Round 1 – Pelikán, Jiří – 1-0 – Corte, Cesar J – G7 1. f4 Nf6 2. Nf3 c5 3. d3 g6 4. e4 Bg7 5. Be2 Nc6 6. O-O d6 7. Qe1 Qc7 8. Nc3 a6 9. Qg3 e6 10. f5 exf5
1955 Hungary Ch – Round 1 – Szilagyi, Gyorgy Laszlo – 1/2-1/2 – Foldi, J. – G70 1. f4 Nf6 2. Nf3 c5 3. e3 g6 4. b3 Bg7 5. Bb2 O-O 6. Be2 d5 7. O-O Nc6 8. Ne5 Bd7 9. Bf3 Rc8 10. d3 Qc7
1955 Manhattan CC Ch 5556 – Round 15 – Feuerstein, Arthur – 1/2-1/2 – Kevitz, Alexander – G70 1. f4 Nf6 2. Nf3 c5 3. g3 Nc6 4. Bg2 d6 5. d3 e5 6. e4 Be7 7. c4 Bg4 8. Nc3 a6 9. h3 Bxf3 10. Bxf3 Nd4
1955 Manhattan CC Ch 5556 – Round 4 – Feuerstein, Arthur – 1-0 – Pavey, Max – G19 1. f4 Nf6 2. Nf3 c5 3. g3 g6 4. Bg2 Bg7 5. O-O O-O 6. d3 Nc6 7. e4 d6 8. a4 Bd7 9. h3 Ne8 10. Nbd2 f5
1957 Danmarksmesterskabet – Round 1 – Norman Hansen, Holger – 1-0 – Nielsen, Hartvig – G4 1. f4 Nf6 2. Nf3 c5 3. e3 g6 4. b3 Bg7 5. Bb2 O-O 6. c4 Nc6 7. Be2 d5 8. cxd5 Nxd5 9. Bxg7 Kxg7 10. Qc1 Qd6
1958 Buenos Aires V – Round 1 – Pelikán, Jiří – 1-0 – Guimard, Carlos E – G7 1. f4 Nf6 2. Nf3 c5 3. d3 d5 4. g3 Nc6 5. Bg2 g6 6. O-O Bg7 7. c3 O-O 8. Qe1 d4 9. h3 Nd5 10. cxd4 Nxd4
1958 BUL Ch – Round ? – Orev, Petar – 1/2-1/2 – Kaikamdzozov, Jivko – G64 1. f4 Nf6 2. Nf3 c5 3. e3 Nc6 4. b3 g6 5. Bb2 Bg7 6. g4 d5 7. g5 Nh5 8. Bxg7 Nxg7 9. Bb5 Bd7 10. Nc3 a6
1959 Buenos Aires – Round 11 – Wexler, Francisco – 0-1 – Foguelman, Alberto – G30 1. f4 Nf6 2. Nf3 c5 3. g3 b6 4. d3 d5 5. Bg2 Bb7 6. O-O e6 7. Nbd2 Be7 8. e4 dxe4 9. Ng5 O-O 10. Ngxe4 Nc6
1959 Quilmes – Round 4 – Pelikán, Jiří – 1/2-1/2 – Foguelman, Alberto – G38 1. f4 Nf6 2. Nf3 c5 3. d3 d5 4. g3 Nc6 5. Bg2 g6 6. O-O Bg7 7. c3 O-O 8. a4 a6 9. Qe1 Qd6 10. e4 dxe4
1960 Buenos Aires ch-ARG – Round 10 – Pelikan, Anna – 1-0 – Benko, Francisco – G73 1. f4 c5 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. O-O Nc6 6. d3 d5 7. c3 O-O 8. a4 Bf5 9. h3 d4 10. g4 Bc8
1962 OWL Ch – Round 5 – Erpel, Werner – 1/2-1/2 – Groenegress, Wilfried – G12 1. f4 c5 2. Nf3 Nf6 3. e3 g6 4. Be2 Bg7 5. O-O O-O 6. d3 Nc6 7. Nbd2 d6 8. c3 e5 9. Ng5 exf4 10. exf4 d5
1966 La Habana olm fin-A – Round 12 – Larsen, Benjamin Holsko – 1-0 – Minev, Nikolay N – G230 1. f4 c5 2. Nf3 Nf6 3. d3 d5 4. g3 g6 5. Bg2 Bg7 6. a4 O-O 7. Na3 Nc6 8. c3 a6 9. O-O Rb8 10. Nh4 b5
1966 Rio Hondo zt – Round 13 – Pelikan, Jan – 0-1 – Fabian Godoy, Dhyago Fabricio – G79 1. f4 Nf6 2. Nf3 c5 3. d3 d5 4. g3 Nc6 5. Bg2 g6 6. O-O Bg7 7. c3 O-O 8. Na3 Rb8 9. e4 Bg4 10. h3 Bxf3
1966 Rio Hondo zt – Round 6 – Pelikan, Jan – 0-1 – Foguelman, Alberto – G34 1. f4 Nf6 2. Nf3 c5 3. g3 g6 4. Bg2 Bg7 5. d3 d5 6. O-O Nc6 7. c3 O-O 8. Na3 a6 9. e4 dxe4 10. dxe4 Qc7
1966 Tel Aviv – Round 1 – Szilagyi, Gyorgy Laszlo – 0-1 – Bolbochan, J. – G11 1. f4 Nf6 2. Nf3 c5 3. e3 g6 4. b3 Bg7 5. Bb2 O-O 6. Be2 d5 7. O-O Nc6 8. Qc1 b6 9. Nc3 Bb7 10. Nd1 d4
1967 Monte Carlo – Round 5 – Lombardy, William J – 1/2-1/2 – Gligorić, Svetozar – G22 1. f4 c5 2. Nf3 Nf6 3. c4 Nc6 4. g3 g6 5. Bg2 Bg7 6. O-O O-O 7. Nc3 d6 8. d3 Ne8 9. Bd2 Nc7 10. Rb1 Rb8
1968 Hungary – Round 1 – Nagy, Ervin – 1/2-1/2 – Honfi, K. – G138 1. f4 Nf6 2. Nf3 c5 3. b3 g6 4. Bb2 Bg7 5. e4 O-O 6. d3 d5 7. Nbd2 Nc6 8. g3 d4 9. Bg2 Ng4 10. Nf1 e5
1969 Moskou ch-URS – Round 1 – Zaitsev, Alexander – 1/2-1/2 – Zhukhovitsky, Samuel – G194 1. f4 Nf6 2. Nf3 c5 3. e3 g6 4. Be2 Bg7 5. O-O O-O 6. d3 d5 7. Qe1 b6 8. a4 Nc6 9. Nbd2 Qc7 10. Qh4 e5

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