A51f — Budapest: Fajarowicz, 4.Nd2

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

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : majorité centre (2v1), paire de fous, colonne d.
Faiblesses adverses : Bc8 enfermé, Bf8 enfermé, roi noir au centre, knight e4 en prise.
Problèmes : roi au centre, Bc1 enfermé, Bf1 enfermé, 5 pièces non développées (G1, C1, F1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● Nf3 — Développer Ng1
● Be3 — Développer Bc1
● e3 — Libérer Bf1, préparer Bd3
● Rd — Tour sur colonne d

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte c5, case forte g5, paire de fous, colonne e.
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
● ...Be7 — Développer Bf8
● ...c5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

A51f — Fajarowicz

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

Eval: [+0.95]

Les coups candidats

4…Bb4 — 58.7% (305 parties)

Ambassadeurs : Laureles, Raymundo (14x), Steiner, Herman (5x), Hokano, Juan Carlos (4x), Heinzel, Olaf (4x), Siegmund, Rainer (3x), Gérard, André (3x), Opocensky, Karel (2x), Woliston, Philip (2x)

4…Nc5 — 39.6% (206 parties)

Ambassadeurs : Toulzac, Pierre-Yves (5x), Engels, Ludwig (4x), Richter, Kurt P (4x), Korning, Peter (3x), Luckis, Marcos (3x), Lanzani, Mario Lorenzo (3x), Jordaan, Wayne (3x), Olenderek, Tomasz (3x)

4…Nxd2 — 1.2% (6 parties)

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

4…... — 0.2% (1 parties)

Ambassadeurs : Boyle, Bill (1x), Wall, Bill (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	4…Bb4	4…Nc5	4…Nxd2	4…...
<1800	16	69%	31%	—	—
1800-2200	186	63%	34%	2%	—
2200-2600	127	56%	43%	1%	—

Évolution par décennie (% des parties)

Décennie	N parties	4…Bb4	4…Nc5	4…Nxd2	4…...
1930s	24	33%	67%	—	—
1940s	21	43%	57%	—	—
1950s	15	40%	60%	—	—
1960s	5	40%	60%	—	—
1970s	13	54%	38%	—	8%
1980s	29	59%	38%	3%	—
1990s	137	58%	41%	1%	—
2000s	132	61%	38%	1%	—
2010s	127	67%	31%	2%	—
2020s	17	71%	29%	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
4…Bb4	67%	71%	▲ +3.7%
4…Nc5	31%	29%	▼ -1.3%
4…Nxd2	2%	0%	▼ -1.6%
4…...	0%	0%	+0.0%

Joueurs célèbres

Champions du monde dans cette position

Alekhine, Alexander — 1 partie

Parties historiques

4…Bb4 — 58.7% (305 parties)

1933 — Muller, Hans P vs Benzinger — 0-1 — Munich GER
1934 — Mues vs Reinhardt, Anton — 0-1 — Correspondence
1934 — Lacy-Hulbert, Arthur Percival vs Lenton, Alfred — 0-1 — Chester, Town Hall
1935 — Stahlberg, Gideon vs Richter, Kurt P — 1-0 — Sopot
1935 — Opocensky, Karel vs Richter, Karlo — 1/2-1/2 — Bad Nauheim GER

4…Nc5 — 39.6% (206 parties)

1930 — Herrmann, Hans, Dr. vs Fajarowicz, Sammi — 1-0 — Frankfurt GER
1931 — Bogoljubow, Efim vs Richter, Kurt P — 1-0 — Swinemunde
1932 — Alekhine, Alexander vs Tartakower, Savielly — 1-0 — Londen
1932 — List, Paul vs Richter, Kurt P — 0-1 — It Swinemuende GER
1933 — Eliskases, Erich vs Pitschak, Rudolf — 1-0 — Moravska Ostrava

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…... — 0.2% (1 parties)

1971 — Boyle, Bill vs Wall, Bill — 0-1 — ?

	♔ Blancs	♚ Noirs
Pions doublés	● e2, ● e5	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	—
Passés	—	—
Majorité	● centre 2v1	—

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	semi-ouvert
Ruptures	● c4-c5, ● e2-e3, ● f2-f3	● …c7-c6, ● …c7-c5, ● …d7-d6, ● …d7-d5, ● …f7-f6, ● …f7-f5

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

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