C80i — Spanish: Open, Richter Variation

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.d5 * ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. dxc6 (Capture en c6, Renforcer le centre — 60 % des parties) ; Re1 (Tour sur colonne semi-ouverte e — 25 % des parties) ; Bb3 (8 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...bxa4 (Capture en a4 — 63 % des parties) ; ...Ne7 (22 % des parties) ; ...Na5 (8 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● a6→b5
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	—	● b4 (2v0), ● c5 (2v0)
Cases faibles	● d4	● g5
Centre	● d5 (1v0)	—

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● e	—

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Ba4	● Ba4 Mauvais (mob. 2)
Bc8		● Bc8 Non développé (mob. 1)
Bf8		● Bf8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	3 (● b1, ● c1, ● a1)	4 (● c8, ● f8, ● a8, ● h8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Roqué	● Au centre
Droits de roque	—	O-O / O-O-O

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	mobile
Ruptures	● c2-c4, ● d5-d6	—

Partie
1937 Birmingham – Round 9 – Eliskases, Erich – 1-0 – Znosko-Borovsky, Eugene – G16 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. d5 bxa4 8. dxc6 d6 9. Re1 Nf6 10. c4 Be7
1937 GER Ch 4th – Round 1 – Richter, Kurt P – 1/2-1/2 – Zollner Hans – G2 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. d5 bxa4 8. dxc6 d6 9. Re1 Nf6 10. c4 Be7
1937 Rogaska Slatina – Round 1 – Kostic, Boris – 1/2-1/2 – Drezga, Porin – G1 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. d5 Ne7 8. Bb3 d6 9. a4 Bb7 10. Qe2 Nc5
1939 Stuttgart – Round 4 – Richter, Karlo – 1/2-1/2 – Vidmar, Marjeta – G25 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. d5 bxa4 8. dxc6 d6 9. Re1 Nf6 10. Bg5 Be7
1941 Munchen – Round 1 – Richter, Karlo – 1-0 – Cortlever, Nico – G14 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. d5 Ne7 8. Re1 Nc5 9. Nxe5 d6 10. Nc6 Qd7
1941 Munich – Round 14 – Caceres Richter, Dylan – 1-0 – Cortlever – G7 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. d5 Ne7 8. Re1 Nc5 9. Nxe5 d6 10. Nc6 Qd7
1941 Munich – Round 14 – Richter, Kurt – 1-0 – Cortlever, Nico – G6 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. d5 Ne7 8. Re1 Nc5 9. Nxe5 d6 10. Nc6 Qd7
1946 Londen II – Round 10 – Medina-Garcia, Antonio – 1-0 – Wood, Gabriel – G19 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. d5 bxa4 8. dxc6 d6 9. Re1 Nf6 10. c4 Bg4
1946 NED Ch prelim II – Round 6 – Pruyt, P H – 0-1 – Henneberke, Frans – G9 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. d5 Ne7 8. Re1 Nc5 9. Nxe5 Bb7 10. c4 d6
1956 Harmonie CC Open – Round 3 – Richardson, Doug – 0-1 – Anderson, Frank Ross – G3 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. d5 bxa4 8. dxc6 d6 9. Re1 f5 10. c4 Be7
1971 Moscow – Round 1 – Krasnov, Aleksander – 0-1 – Ruderfer, Mark B – G182 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. d5 bxa4 8. dxc6 d6 9. c4 Bg4 10. Re1 Nc5

C80i — Open, Richter Variation (1937)

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.d5

Les coups candidats

7…bxa4 — 63.1% (41 parties)

Ambassadeurs : Pinasco, Damian (2x), Wantiez, Fabrice (2x), Hoehne, Volkmar (2x), Toth, Peter (1x), Illi, Hans-Joerg (1x), Byvshev, Vasily (1x), Borisenko, Georgy K (1x), Huguet, Bernard (1x)

7…Ne7 — 21.5% (14 parties)

Ambassadeurs : Dinsen, Carl Krarup (1x), Christiansen, Jan (1x), Rasmussen, Rebekka (1x), Wiik, J. (1x), Drevenius, Niclas (1x), Olsson, Yngve (1x), Haliamanis, Georgios (1x), Grivas, Efstratios (1x)

7…Na5 — 7.7% (5 parties)

Ambassadeurs : Roethgen, R. (1x), Huebler, H. (1x), Carrasco Rodriguez, Ivan (1x), Martinez Miura, Enrique (1x), Verhulst, Nikolaas (1x), Broekmans, Patrik (1x), Bailey, Doug (1x), Finlay, Ian (1x)

7…Nb8 — 4.6% (3 parties)

Ambassadeurs : Rebel, J. (1x), David Yol Machar (1x), Araiza Munoz, Jose Joaquin (1x), Jimenez Zerquera, Eleazar (1x), Sunnerberg, Constantin (1x), Huesmann, Thomas (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7…bxa4	7…Ne7	7…Na5	7…Nb8
<1800	2	100%	—	—	—
1800-2200	29	62%	21%	10%	3%
2200-2600	14	71%	29%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	7…bxa4	7…Ne7	7…Na5	7…Nb8
1950s	9	67%	11%	—	22%
1960s	6	67%	—	17%	—
1970s	4	100%	—	—	—
1980s	4	25%	75%	—	—
1990s	11	73%	27%	—	—
2000s	20	65%	25%	5%	5%
2010s	9	33%	22%	33%	—
2020s	2	100%	—	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7…bxa4	33%	100%	▲ +66.7%
7…Ne7	22%	0%	▼ -22.2%
7…Na5	33%	0%	▼ -33.3%
7…Nb8	0%	0%	+0.0%

Parties historiques

7…bxa4 — 63.1% (41 parties)

1951 — Malich, Burkhard, Dr. vs Wendrich, Fritz — 1-0 — Schwerin GER
1955 — Klages, Jurgen vs Van der Wiel, John T.H. — 0-1 — Brussels BEL
1956 — Byvshev, Vasily vs Borisenko, Georgy K — 1/2-1/2 — Leningrad RUS
1956 — Richardson, Doug vs Anderson, Frank Ross — 0-1 — Toronto CAN
1958 — Holmes, Richard Frank vs Dickson, George — 0-1 — Leamington

7…Ne7 — 21.5% (14 parties)

1955 — Dinsen, Carl Krarup vs Christiansen, Jan — 1-0 — cr.
1982 — Haliamanis, Georgios vs Grivas, Efstratios — 0-1 — Athens GRE
1986 — Rasmussen, Rebekka vs Wiik, J. — 1-0 — cr.
1986 — Drevenius, Niclas vs Olsson, Yngve — 1/2-1/2 — ?
1991 — Cray Blitz vs Ches, Kalina — 1/2-1/2 — ACM Albuquerque

7…Na5 — 7.7% (5 parties)

1968 — Roethgen, R. vs Huebler, H. — 1-0 — corr FRG-PK
2000 — Carrasco Rodriguez, Ivan vs Martinez Miura, Enrique — 1-0 — Madrid ESP
2010 — Bailey, Doug vs Finlay, Ian — 1-0 — Hamilton CAN
2013 — Verhulst, Nikolaas vs Broekmans, Patrik — 1-0 — Antwerp BEL
2013 — Bosch Porta, David vs Fentes Caceres, Daniel — 1-0 — Barcelona ESP

7…Nb8 — 4.6% (3 parties)

1952 — Araiza Munoz, Jose Joaquin vs Jimenez Zerquera, Eleazar — 0-1 — Havana CUB
1958 — Rebel, J. vs David Yol Machar — 1-0 — cr.
2009 — Sunnerberg, Constantin vs Huesmann, Thomas — 0-1 — Belgium BEL