C48f — Four Knights: Spanish, Classical, Marshall Variation

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bc5 5.O-O O-O 6.Nxe5 Nd4 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : majorité centre (2v1), case forte c4, case forte g4, case forte d5, Bb5 actif, paire de fous.
Faiblesses adverses : Bc8 enfermé.
Problèmes : Bc1 enfermé.
Plans :
● d3 — Libérer Bc1
● c3 — Préparer d4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : Bc5 actif, paire de fous, colonne e.
Faiblesses adverses : Bc1 enfermé.
Problèmes : Bc8 enfermé.
Plans :
● ...d6 — Libérer Bc8
● ...c6 — Rupture
● ...d5 — Rupture
● ...Re — Tour sur colonne e

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

C48f — Spanish Classical Marshall Variation

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bc5 5.O-O O-O 6.Nxe5 Nd4

Eval: [+0.66]

Les coups candidats

7.Be2 — 26.2% (21 parties)

Ambassadeurs : Marshall, Frank (2x), Forgacs, Leo (2x), Schlechter, Carl (2x), Spielmann, Rudolf (1x), Perlis, Julius (1x), Milner Barry, Philip (1x), Lilienthal, Andor (1x), D Marco, Gianni (1x)

7.Bc4 — 26.2% (21 parties)

Ambassadeurs : Vehi Bach, Victor Manuel (2x), Rellstab, Ludwig Sr (1x), Rotenstein, Simon (1x), Gresser, Gisela Kahn (1x), Eretova, Kveta (1x), Huchwajda, Lukasz (1x), Zajecki, Maurycy (1x), Braun, Gottfried, Dr. (1x)

7.Nd3 — 23.8% (19 parties)

Ambassadeurs : Morel, Fernand (1x), Giustolisi, Alberto (1x), Curdo, John (1x), Birt, Brendan (1x), Stertenbrink, Guenter (1x), Goy, Udo (1x), Unrath (1x), Cruz Reichert, Mariana (1x)

7.d3 — 8.8% (7 parties)

Ambassadeurs : Spielmann, Rudolf (1x), Perlis, Julius (1x), Smith, Don (1x), de Wall, Robert (1x), Njotea, Chris N (1x), McMahon, Daire (1x), Ansley J (1x), Cox, Bailey (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7.Be2	7.Bc4	7.Nd3	7.d3
<1800	2	50%	50%	—	—
1800-2200	27	15%	33%	22%	7%
2200-2600	29	28%	31%	34%	—

Évolution par décennie (% des parties)

Décennie	N parties	7.Be2	7.Bc4	7.Nd3	7.d3
1900s	5	100%	—	—	—
1910s	2	50%	—	—	50%
1920s	1	—	100%	—	—
1930s	1	—	—	—	—
1940s	1	100%	—	—	—
1950s	1	—	—	100%	—
1960s	3	—	33%	—	—
1970s	3	67%	—	—	33%
1980s	4	25%	—	50%	—
1990s	10	30%	20%	10%	40%
2000s	24	8%	25%	42%	4%
2010s	12	33%	33%	8%	—
2020s	13	15%	54%	31%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7.Be2	33%	15%	▼ -17.9%
7.Bc4	33%	54%	▲ +20.5%
7.Nd3	8%	31%	▲ +22.4%
7.d3	0%	0%	+0.0%

Parties historiques

7.Be2 — 26.2% (21 parties)

1904 — D Marco, Gianni vs Marshall Viele, Fabrizio Aaron — 1/2-1/2 — Monte Carlo MNC
1904 — Marco, Georg vs Marshall, Frank — 1/2-1/2 — Monte Carlo MNC
1904 — Marchand, Max vs Marshall, Frank — 1/2-1/2 — Monte Carlo MNC
1905 — Forgacs, Leo vs Schlechter, Carl — 1/2-1/2 — Vienna AUT
1905 — Forgacs, Leo vs Schlechter, Carl — 1/2-1/2 — Wenen

7.Bc4 — 26.2% (21 parties)

1929 — Rellstab, Ludwig Sr vs Rotenstein, Simon — 0-1 — Berlin GER
1966 — Gresser, Gisela Kahn vs Eretova, Kveta — 0-1 — Oberhausen
1994 — Braun, Gottfried, Dr. vs Lang, Stefan — 0-1 — BL2-O9394 GER
1997 — Huchwajda, Lukasz vs Zajecki, Maurycy — 1-0 — Poznan POL
2002 — Salvati, Diego Javier vs Moeckel, Jean L — 1-0 — IECG

7.Nd3 — 23.8% (19 parties)

1952 — Morel, Fernand vs Giustolisi, Alberto — 1/2-1/2 — Salsomaggiore Terme
1984 — Stertenbrink, Guenter vs Goy, Udo — 1-0 — GER
1988 — Curdo, John vs Birt, Brendan — 1-0 — Boston, MA USA
1990 — Unrath vs Cruz Reichert, Mariana — 0-1 — Schwaebisch Gmuend
2001 — Madl, Ildiko vs Rabiega, Robert — 1/2-1/2 — Graz AUT

7.d3 — 8.8% (7 parties)

1912 — Spielmann, Rudolf vs Perlis, Julius — 1-0 — San Sebastian ESP
1971 — Smith, Don vs de Wall, Robert — 0-1 — Marysville,CA
1991 — Ansley J vs Cox, Bailey — 0-1 — corr Powell mem
1993 — Njotea, Chris N vs McMahon, Daire — 0-1 — Dublin IRL
1993 — Ruiz Gutierrez, Manuel vs Munoz Rodriguez, Blas — 0-1 — Las Palmas ESP

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

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● c4 (2v0), ● g4 (2v1), ● d5 (2v1)	—
Cases faibles	—	● d7
Centre	● d5 (2v1)	● d4 (1v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	—	● e

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bb5	● Bb5 Actif (mob. 7)
Bc5		● Bc5 Actif (mob. 5)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	2 (c1, a1)	2 (c8, a8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Roqué	● Roqué
Droits de roque	—	—

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● d2-d3, ● f2-f3	● …c7-c6, ● …d7-d6, ● …d7-d5

Partie
1904 It (Men) Monte Carlo MNC – Round 5 – Marchand, Max – 1/2-1/2 – Marshall, Frank – G12 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bc5 5. O-O O-O 6. Nxe5 Nd4 7. Be2 Re8 8. Nf3 Nxe4 9. Nxd4 Nxf2 10. Rxf2 Bxd4
1912 It (Men) San Sebastian ESP – Round 10 – Spielmann, Rudolf – 1-0 – Perlis, Julius – G23 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bc5 5. O-O O-O 6. Nxe5 Nd4 7. d3 d6 8. Nf3 Bg4 9. Be3 Bxf3 10. gxf3 c6
1912 San Sebastian – Round 15 – Spielmann, Rudolf – 1/2-1/2 – Perlis, Julius – G37 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bc5 5. Nxe5 O-O 6. O-O Nd4 7. Be2 Re8 8. Nf3 Nxe4 9. Nxd4 Bxd4 10. Nxe4 Rxe4
1936 USA Ch New York, NY USA – Round 11 – Morton, Harold – 1/2-1/2 – Horowitz, Albert Israel – G23 1. e4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. Bb5 Nd4 5. O-O Bc5 6. Nxe5 O-O 7. Nf3 Nxb5 8. Nxb5 Nxe4 9. d3 Nf6 10. Bf4 Bb6
1947 London ENG-USSR – Round 1 – Milner Barry, Philip – 1/2-1/2 – Lilienthal, Andor – G6 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bc5 5. Nxe5 O-O 6. O-O Nd4 7. Be2 Re8 8. Nf3 Nxe4 9. Nxe4 Rxe4 10. Nxd4 Bxd4
1965 Copenhagen – Round 14 – Enevoldsen, Jens – 1-0 – Nielsen, Jorgen Lovgren – G114 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nc3 O-O 6. Nxe5 Nd4 7. Ba4 d6 8. Nd3 Bb6 9. h3 d5 10. e5 Ne4
1966 Oberhausen ol women – Round 1 – Gresser, Gisela Kahn – 0-1 – Eretova, Kveta – G4 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Nd4 5. Nxe5 Bc5 6. O-O O-O 7. Bc4 d6 8. Nf3 Bg4 9. Be2 Nxe2+ 10. Qxe2 Nh5

1904 It (Men) Monte Carlo MNC – Round 5 – Marchand, Max – 1/2-1/2 – Marshall, Frank – G12

1912 It (Men) San Sebastian ESP – Round 10 – Spielmann, Rudolf – 1-0 – Perlis, Julius – G23

1912 San Sebastian – Round 15 – Spielmann, Rudolf – 1/2-1/2 – Perlis, Julius – G37

1936 USA Ch New York, NY USA – Round 11 – Morton, Harold – 1/2-1/2 – Horowitz, Albert Israel – G23

1947 London ENG-USSR – Round 1 – Milner Barry, Philip – 1/2-1/2 – Lilienthal, Andor – G6

1965 Copenhagen – Round 14 – Enevoldsen, Jens – 1-0 – Nielsen, Jorgen Lovgren – G114

1966 Oberhausen ol women – Round 1 – Gresser, Gisela Kahn – 0-1 – Eretova, Kveta – G4