A51f — Budapest: Fajarowicz, 4.Nd2

1.d4 Nf6 2.c4 e5 3.dxe5 Ne4 4.Nd2 * ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

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Plans. Ngf3 (Développer g1 — 28 % des parties) ; a3 (Préparer expansion aile dame — 26 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

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Plans. ...Bb4 (Clouer d2, Fou actif (mobilité 8), Développer f8 — 61 % des parties) ; ...Nc5 (Cavalier actif en c5 — 37 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	● e2, ● e5	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	—
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	—	● c5 (2v0), ● g5 (2v0)
Cases faibles	—	—
Centre	● d5 (1v0), ● e4 (1v0)	—

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● e

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. 5)
Paire de fous	● Oui	● Oui
Non développées	5 (● g1, ● 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	● e5-e6	● …d7-d6, ● …d7-d5, ● …f7-f6

Partie
1932 Londen – Round 7 – Alekhine, Alexander – 1-0 – Tartakower, Savielly – G17 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Nc5 5. Ngf3 Nc6 6. g3 Qe7 7. Bg2 g6 8. Nb1 Nxe5 9. O-O Nxf3+ 10. exf3 Bg7
1933 Moravska Ostrava – Round ? – Eliskases, Erich – 1-0 – Pitschak, Rudolf – G22 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Nc5 5. Ngf3 Nc6 6. g3 Qe7 7. Bg2 g5 8. O-O g4 9. Nh4 Nxe5 10. b4 Na6
1935 GER-SWE m – Round 1 – Stahlberg, Gideon – 1-0 – Richter, Kurt P – G2 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Bb4 5. Nf3 Nc6 6. g3 d6 7. exd6 Qxd6 8. a3 Qc5 9. e3 Bxd2+ 10. Nxd2 Nxd2
1937 Budapest – Round 1 – Barcza, Gedeon – 0-1 – Halic Ivan – G3 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Nc5 5. Ngf3 Nc6 6. g3 d6 7. exd6 Bxd6 8. Bg2 Qf6 9. O-O Be6 10. Nb3 O-O
1938 Nice – Round 6 – Opocensky, Karel – 1-0 – Griess, E. – G7 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Bb4 5. Nf3 Nc6 6. g3 Qe7 7. Bg2 Nxe5 8. Nxe5 Qxe5 9. O-O f5 10. Nxe4 fxe4
1939 Buenos Aires Circulo – Round 1 – Najdorf, Miguel – 1-0 – Czerniak, Moshe – G16 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Bb4 5. Nf3 Nc6 6. g3 d6 7. exd6 Qxd6 8. a3 Qc5 9. e3 Bxd2+ 10. Nxd2 Nxd2
1939 Buenos Aires ol f-A – Round 6 – Van Scheltinga, Theo – 1-0 – Tartakower, Savielly – G108 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Nc5 5. Ngf3 Nc6 6. g3 Qe7 7. Bg2 Nxe5 8. O-O d6 9. b4 Ncd7 10. Bb2 g6
1939 Vienna – Round 6 – Engels, Ludwig – 1-0 – Decreton Keller, Henrique – G16 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Nc5 5. b4 Ne6 6. a3 a5 7. b5 d6 8. exd6 Bxd6 9. Ngf3 O-O 10. e3 Nd7
1941 Copenhagen – Round 1 – Gemzoe, Jacob – 1-0 – Korning, Peter – G7 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Nc5 5. Ngf3 Nc6 6. g3 Qe7 7. Bg2 g6 8. O-O Bg7 9. Rb1 a5 10. b3 O-O
1941 Montevideo – Round 8 – Luckis, Marcos – 1/2-1/2 – Engels, Ludwig – G31 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Nc5 5. Ngf3 Nc6 6. g3 d5 7. exd6 Qxd6 8. Bg2 Bf5 9. a3 a5 10. b3 O-O-O
1941 Munchen – Round 1 – Rethy, Pal – 1-0 – Richter, Karlo – G5 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Nc5 5. Ngf3 Nc6 6. g3 d6 7. exd6 Qxd6 8. Bg2 Bf5 9. O-O Be7 10. e4 Bg4
1945 Novi Sad – Round 23 – Fajer Abdallah Mohamad – 0-1 – Kostic, Boris – G209 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Bb4 5. Nf3 Nc6 6. g3 Qe7 7. Bg2 Nxe5 8. Nxe5 Qxe5 9. O-O Nxd2 10. Bxd2 Qxb2
1946 Pittsburgh Open – Round 1 – Jirov Katz, Maayan – 0-1 – Steiner, Herman – G20 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Bb4 5. Nf3 f6 6. a3 Bxd2+ 7. Nxd2 Nxd2 8. Qxd2 fxe5 9. Qg5 Qf6 10. Qxf6 gxf6
1947 Yugoslavia Ch – Round 1 – Vidmar, Milan Jr – 1-0 – Kostic, Boris – G3 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Nc5 5. Ngf3 Nc6 6. g3 Qe7 7. Bg2 Nxe5 8. O-O d6 9. b4 Ne6 10. Bb2 f6
1948 Karlovy Vary – Round 2 – Troianescu, Octav – 1-0 – Stulik, Vlastimil – G28 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Nc5 5. Ngf3 Nc6 6. g3 d6 7. exd6 Bf5 8. Bg2 Qxd6 9. O-O O-O-O 10. a3 a5
1949 CSR-NED Prague CZE – Round 1 – Sajtar, Jaroslav – 1-0 – Muehring – G3 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Nc5 5. Ngf3 Nc6 6. g3 d6 7. exd6 Qxd6 8. Bg2 Bf5 9. O-O O-O-O 10. a3 Be7
1949 HUN-NLD – Round ? – Gereben, Erno – 1-0 – Muhring, Willem Jan – G3 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Nc5 5. Ngf3 Nc6 6. g3 d6 7. exd6 Qxd6 8. Bg2 Bf5 9. O-O O-O-O 10. b4 Nxb4
1951 Mar del Plata zt – Round 1 – Bianco Esposito, Antonio – 1/2-1/2 – Flores Alvarez, Rodrigo – G4 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Nc5 5. Ngf3 Nc6 6. g3 d6 7. exd6 Bxd6 8. Bg2 O-O 9. O-O Re8 10. Nb3 Nxb3
1951 Mar del Plata zt – Round 12 – Luckis, Marcos – 1-0 – Schroeder, Raik – G115 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Nc5 5. Ngf3 Nc6 6. g3 d6 7. exd6 Bg4 8. a3 a5 9. Bg2 Bxd6 10. O-O a4
1952 Helsinki olm – Round 1 – Planas Garcia, Francisco – 1/2-1/2 – Milner Barry, Philip – G58 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Bb4 5. a3 Bxd2+ 6. Bxd2 Nc6 7. Nf3 Nxd2 8. Qxd2 Qe7 9. g3 Nxe5 10. Nxe5 Qxe5
1953 URS chT sf – Round ? – Borisenko, Georgy K – 1-0 – Mukhitdinov, Mamadzhan – G4 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Nc5 5. Ngf3 Nc6 6. g3 Qe7 7. Bg2 a5 8. O-O g6 9. Nb1 Nxe5 10. Nc3 c6
1953 Wch U20 fin-A – Round 4 – Ivkov, Borislav – 1-0 – Persitz, Raaphi – G11 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Bb4 5. Nf3 d5 6. exd6 Qxd6 7. e3 Nc6 8. Be2 Bf5 9. O-O Qh6 10. Nxe4 Bxe4
1955 Ljubljana – Round 12 – Bertok, Mario Jr. – 1/2-1/2 – Persitz, Raaphi – G100 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Bb4 5. a3 Bxd2+ 6. Bxd2 Nc6 7. Nf3 Qe7 8. Bf4 g5 9. Qd5 gxf4 10. Qxe4 d6
1955 URS Ch sf – Round ? – Taimanov, Mark E – 1/2-1/2 – Mukhitdinov, Mamadzhan – G79 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Nc5 5. Ngf3 Nc6 6. g3 g6 7. Nb3 Ne6 8. Bd2 Bg7 9. Bc3 a5 10. Bg2 a4
1955 Zittau-B 5th – Round 9 – Zirngibl, Albert – 1-0 – Barwich, Alfred – G13 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Bb4 5. Nf3 d5 6. a3 Bxd2+ 7. Nxd2 Nxd2 8. Qxd2 dxc4 9. Qxd8+ Kxd8 10. Bg5+ Ke8
1969 Athens zt – Round 15 – Huebner, Robert – 1-0 – Pedersen, Ebbe – G82 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Nc5 5. Ngf3 Nc6 6. a3 a5 7. Nb3 Ne6 8. Bd2 a4 9. Nc1 d6 10. Bc3 Bd7

A51f — Budapest: Fajarowicz (1932)

1.d4 Nf6 2.c4 e5 3.dxe5 Ne4 4.Nd2

Les coups candidats

4…Bb4 — 61.4% (298 parties)

Ambassadeurs : Laureles, Raymundo (10x), Hokano, Juan Carlos (4x), Gérard, André (3x), Persitz, Raaphi (2x), Boyle, Bill (2x), Glasewald, Stefan (2x), Zirngibl, Albert (1x), Barwich, Alfred (1x)

4…Nc5 — 36.9% (179 parties)

Ambassadeurs : Lanzani, Mario Lorenzo (4x), Kogan, Arthur (3x), Olenderek, Tomasz (3x), Amaro, Lucas Ibrair (2x), Demirel, Tolga (2x), Herms Agullo, Jordi (2x), Taimanov, Mark (1x), Muhutdinov, Marat (1x)

4…Nxd2 — 1.2% (6 parties)

Ambassadeurs : Skourtis, Efstratios (1x), Anagnou, Konstantinos (1x), Kukel, Imre (1x), Borosova, Zuzana (1x), De Andres Gonalons, Fernando (1x), Resa, Tobias (1x), De Wolf, Kees (1x), Van den Berg, Bram (1x)

4…Ng5 — 0.2% (1 parties)

Ambassadeurs : Lazanek, Jan (1x), Vavra, Jan (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	4…Bb4	4…Nc5	4…Nxd2	4…Ng5
<1800	33	67%	30%	—	—
1800-2200	219	63%	34%	2%	0%
2200-2600	123	55%	44%	1%	—

Évolution par décennie (% des parties)

Décennie	N parties	4…Bb4	4…Nc5	4…Nxd2	4…Ng5
1950s	15	40%	60%	—	—
1960s	5	40%	60%	—	—
1970s	13	62%	38%	—	—
1980s	30	60%	37%	3%	—
1990s	137	58%	41%	1%	—
2000s	132	61%	38%	1%	1%
2010s	129	67%	30%	2%	—
2020s	24	75%	25%	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
4…Bb4	67%	75%	▲ +7.6%
4…Nc5	30%	25%	▼ -5.2%
4…Nxd2	2%	0%	▼ -1.6%
4…Ng5	0%	0%	+0.0%

Parties historiques

4…Bb4 — 61.4% (298 parties)

1951 — Pomar Salamanca, Arturo vs Steiner, Herman — 1-0 — Madrid ESP
1952 — Adhrit Mandal vs Bisguier, Arthur B — 0-1 — Helsinki FIN
1952 — Planas Garcia, Francisco vs Milner Barry, Philip — 1/2-1/2 — Helsinki olm
1953 — Ivkov, Borislav vs Persitz, Raaphi — 1-0 — Copenhagen DEN
1955 — Zirngibl, Albert vs Barwich, Alfred — 1-0 — Zittau

4…Nc5 — 36.9% (179 parties)

1950 — Maass, Kurt vs Richter, Kurt — 1-0 — Berlin GER
1951 — Amaro, Lucas Ibrair vs Schroeder, Ruperto — 0-1 — Mar del Plata ARG
1951 — Amaro, Lucas Ibrair vs Schroeder, Raik — 1-0 — Mar del Plata ARG
1951 — Selzer, Edgar vs Coosemans, Billy — 1-0 — Birmingham/Coventry
1951 — Esposito, Alfredo vs Flores Alvarez, Rodrigo — 1/2-1/2 — Mar del Plata ARG

4…Nxd2 — 1.2% (6 parties)

1989 — Skourtis, Efstratios vs Anagnou, Konstantinos — 0-1 — Athens GRE
1998 — Kukel, Imre vs Borosova, Zuzana — 1-0 — Salgotarjan
1999 — De Andres Gonalons, Fernando vs Resa, Tobias — 1-0 — Wiesbaden GER
2005 — De Wolf, Kees vs Van den Berg, Bram — 0-1 — Vlissingen NED
2010 — Malcher, Werner vs Wehmeier, Stefan, Dr. — 1/2-1/2 — GER

4…Ng5 — 0.2% (1 parties)

2007 — Lazanek, Jan vs Vavra, Jan — 0-1 — Czech Republic

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