C83h — Spanish: Open, Classical, 10.Nbd2 O-O 11.Bc2

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Be7 10.Nbd2 O-O 11.Bc2 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte d4, Bc2 actif, paire de fous, colonne d.
Faiblesses adverses : arriéré c7.
Problèmes : Bc1 enfermé.
Plans :
● Be3 — Développer Bc1
● h3 — Empêcher ...Bg4
● Rd — Tour sur colonne d

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte c4, case forte c5, case forte d5, case forte g5, Be6 actif, Be7 actif, paire de fous, colonne e.
Faiblesses adverses : Bc1 enfermé.
Problèmes : arriéré c7.
Plans :
● ...Bg4 — Clouer Nf3
● ...d4 — Rupture
● ...f6 — Rupture
● ...f5 — Rupture
● ...Re — Tour sur colonne e

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

C83h — Open Classical

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Be7 10.Nbd2 O-O 11.Bc2

Eval: [+0.39]

Les coups candidats

11…f5 — 83.3% (889 parties)

Ambassadeurs : Demarre, Jacques (12x), Thomae, Eberhard (12x), Sorin, Ariel (10x), Unzicker, Wolfgang (10x), Szulc, Stanislaw (10x), Roques, Pascal (8x), Anton Guijarro, David (8x), Ferre Pérez, Alberto (7x)

11…Nxd2 — 7.6% (81 parties)

Ambassadeurs : Holzke, Frank (4x), Zajac, Jozef (2x), Van Wessel, Rudy (2x), Ernst, Sipke (2x), Asher, V. (1x), Smith, WH. (1x), Aguilar Aleman, Diego Ignacio (1x), Shipman, Walter (1x)

11…Nc5 — 5.3% (57 parties)

Ambassadeurs : Lasker, Emanuel (2x), Bogoljubow, Efim (2x), Koetter, Thomas, Dr. (1x), Pryer (1x), Factor, Samuel D (1x), Rudakovsky, Iosif (1x), Bondarevsky, Igor (1x), Horowitz, Albert Israel (1x)

11…Bf5 — 3.0% (32 parties)

Ambassadeurs : Korchnoi, Viktor (2x), Pichler Ramoser, Maximilian (2x), Wójcik, Wieslaw (2x), Saemisch, Friedrich (1x), Reti, Richard (1x), Geller, Efim P. (1x), Steffan, Johannes (1x), Pichler, Manfred, Dr. (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	11…f5	11…Nxd2	11…Nc5	11…Bf5
<1800	21	86%	10%	5%	—
1800-2200	255	81%	8%	7%	4%
2200-2600	401	86%	7%	4%	2%
2600+	88	95%	2%	—	2%

Évolution par décennie (% des parties)

Décennie	N parties	11…f5	11…Nxd2	11…Nc5	11…Bf5
1890s	2	100%	—	—	—
1900s	1	100%	—	—	—
1910s	4	25%	25%	50%	—
1920s	27	70%	7%	19%	4%
1930s	12	75%	17%	8%	—
1940s	24	67%	29%	4%	—
1950s	13	92%	8%	—	—
1960s	25	88%	4%	—	4%
1970s	35	86%	3%	6%	—
1980s	82	84%	5%	4%	6%
1990s	116	79%	6%	9%	5%
2000s	277	82%	8%	7%	3%
2010s	307	85%	9%	3%	3%
2020s	142	90%	5%	3%	2%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
11…f5	85%	90%	▲ +5.5%
11…Nxd2	9%	5%	▼ -3.9%
11…Nc5	3%	3%	-0.4%
11…Bf5	3%	2%	-0.5%

Joueurs célèbres

Champions du monde dans cette position

Euwe, Max — 5 parties
Anand, Viswanathan — 5 parties
Lasker, Emanuel — 4 parties
Carlsen, Magnus — 4 parties
Hou, Yifan — 2 parties
Tal, Mikhail — 1 partie
Kasparov, Garry — 1 partie
Karpov, Anatoly — 1 partie

Parties historiques

11…f5 — 83.3% (889 parties)

1897 — PooleBertlin vs Mason, James — 0-1 — London ENG
1897 — Poole P H vs Mason, James — 0-1 — ?
1909 — Chandler, Jeff A vs Dixon Mitchell, Madeleyn Desiret — 1-0 — Harvard
1919 — Pedzich, Dominik vs Flamberg, Alexander — 1-0 — Warsaw POL
1920 — Lasker, Emanuel vs H G Reeders — 1/2-1/2 — Amsterdam NED

11…Nxd2 — 7.6% (81 parties)

1911 — Asher, V. vs Smith, WH. — 1-0 — California
1923 — Chajes, Oscar vs Hodges, Albert — 0-1 — Lake Hopatcong
1928 — Yates, Frederic D vs Tarrasch, Siegbert — 1/2-1/2 — Bad Kissingen GER
1938 — Broadbent, Reginald vs van Doesburgh, Gerrit Roelof Diederik — 1-0 — London, Gt Eastern Hotel
1938 — Broadbent Brun, Jensen vs Van Doesburgh, Gerrit — 1-0 — England

11…Nc5 — 5.3% (57 parties)

1919 — Bogoljubow, Efim vs Reti, Boldizsar Tibor — 1-0 — Stockholm SWE
1919 — Bogoljubow, Efim vs Reti, Richard — 1-0 — Stockholm SWE
1920 — Lasker, Emanuel vs Silvain Izaak Groen — 1/2-1/2 — Haarlem NED
1922 — Yates, Frederic D vs Wahltuch, Victor — 1-0 — London ENG
1923 — De Groen, Mark Saulbery vs Jesty — 0-1 — Portsmouth

11…Bf5 — 3.0% (32 parties)

1925 — Saemisch, Friedrich vs Reti, Richard — 1/2-1/2 — Moscow RUS
1967 — Geller, Efim P. vs Korchnoi, Viktor — 1/2-1/2 — Budva MNE
1981 — Steffan, Johannes vs Pichler, Manfred, Dr. — 0-1 — DDR-Cup corr
1982 — Hakki, Imad vs Ofstad, Per — 1-0 — Gausdal NOR
1984 — Mertins, Klaus vs Rickers, Bernhard — 1/2-1/2 — FRG-ch18 corr8184

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	● c7
Chaînes	● b2→c3	● a6→b5
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● d4 (2v1)	● c4 (2v1), ● c5 (2v0), ● d5 (2v0), ● g5 (2v1)
Cases faibles	—	—
Centre	● d4 (2v1), ● e4 (2v1)	● d5 (2v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● e

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bc2	● Bc2 Actif (mob. 5)
Be6		● Be6 Actif (mob. 5)
Be7		● Be7 Actif (mob. 7)
Paire de fous	● Oui	● Oui
Non développées	2 (c1, a1)	1 (a8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● c3-c4	● …d5-d4, ● …f7-f6, ● …f7-f5

Partie
1919 Stockholm – Round 4 – Bogoljubow, Efim – 1-0 – Reti, Richard – G25 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Be7 10. Nbd2 O-O
1921 Goteborg SWE – Round ? – Ahlberg, Adrian – 0-1 – Rubinstein, Akiba – G8 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Be7 10. Nbd2 O-O
1922 London – Round 9 – Yates, Frederic D – 1-0 – Wahltuch, Victor – G21 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Be7 10. Nbd2 O-O
1923 New York m – Round 12 – Schapiro, Morris Abraham – 1-0 – Chajes, Oscar – G12 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Be7 10. Nbd2 O-O
1925 Moscow – Round 1 – Saemisch, Friedrich – 1/2-1/2 – Reti, Richard – G94 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Be7 10. Nbd2 O-O
1928 Bad Kissingen – Round 11 – Yates, Frederic D – 1/2-1/2 – Tarrasch, Siegbert – G63 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Be7 10. Nbd2 O-O
1940 Moskou ch-URS – Round 1 – Rudakovsky, Iosif – 0-1 – Bondarevsky, Igor – G94 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Be7 10. Nbd2 O-O
1946 Maastricht – Round 1 – Prins, Lodewijk – 1-0 – Vlagsma, Chris – G6 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Be7 10. Nbd2 O-O
1946 Pittsburgh Open – Round 1 – Aguilar Aleman, Diego Ignacio – 1/2-1/2 – Shipman, Walter – G12 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Be7 10. Bc2 O-O
1947 Kassel – Round 2 – Unzicker, Wolfgang – 1/2-1/2 – Nonnenmacher, Albert – G9 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Be7 10. Nbd2 O-O
1964 URS-ch32 – Round ? – Lein, Anatoly – 1/2-1/2 – Lutikov, Anatoly S – G6 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Be7 10. Nbd2 O-O
1966 URS Team Ch – Round 1 – Suetin, Alexey S – 1/2-1/2 – Korchnoi, Viktor – G59 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Be7 10. Nbd2 O-O
1967 Budva – Round 1 – Geller, Efim P – 1/2-1/2 – Korchnoi, Viktor – G18 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Be7 10. Nbd2 O-O
Corus A 2008 – Round 3 – Adams, Michael – 1/2-1/2 – Carlsen, Magnus – G19 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Nbd2 Be7 10. c3 O-O
PCA/Intel-GP 1994 – Round 2 – Ivanchuk, Vasyl – 1-0 – Korchnoi, Viktor – G21 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Be7 10. Nbd2 O-O

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