C83f — Spanish: Open, Classical, 10.Nbd2 O-O

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 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte d4, Bb3 actif, paire de fous, colonne d.
Faiblesses adverses : arriéré c7.
Problèmes : Bc1 enfermé.
Plans :
● Be3 — Développer Bc1
● h3 — Empêcher ...Bg4
● Bc2 — Anticiper ...Na5
● Rd — Tour sur colonne d

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : 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 :
● ...Na5 — Attaquer Bb3
● ...Bg4 — Clouer Nf3
● ...d4 — Rupture
● ...f6 — Rupture
● ...f5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

C83f — 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

Eval: [+0.48]

Les coups candidats

11.Bc2 — 69.6% (1011 parties) →

Ambassadeurs : Thomae, Eberhard (12x), Sorin, Ariel (10x), Korchnoi, Viktor (10x), Demarre, Jacques (10x), Roques, Pascal (10x), Szulc, Stanislaw (10x), Unzicker, Wolfgang (9x), Kantor, Reka (7x)

11.Qe2 — 15.7% (228 parties) →

Ambassadeurs : Euwe, Max (8x), Yanofsky, Daniel Abraham (4x), Keres, Paul (4x), Unzicker, Wolfgang (4x), Van den Bosch, Johannes (3x), Pinkus, Albert (3x), Thomas, George Alan (3x), Sergeant, Edward (3x)

11.Re1 — 10.5% (152 parties)

Ambassadeurs : Euwe, Max (4x), Erdos, Viktor (4x), Shirov, Alexei (3x), Yates, Frederic D (2x), Fox, Albert (2x), Kosten, Anthony C. (2x), Tal, Mikhail (2x), Giaccio, Alfredo (2x)

11.Nd4 — 2.8% (41 parties)

Ambassadeurs : Sargsyan, Shant (2x), Keres, Paul Petrovich (1x), Fine, Reuben (1x), Pinkus, Lutz (1x), Platz Macia, Carlos (1x), Hoeflein (1x), O'Kelly de Galway, Alberic (1x), Hatherall (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	11.Bc2	11.Qe2	11.Re1	11.Nd4
<1800	27	78%	11%	11%	—
1800-2200	319	76%	8%	12%	2%
2200-2600	496	76%	8%	12%	3%
2600+	110	77%	9%	11%	2%

Évolution par décennie (% des parties)

Décennie	N parties	11.Bc2	11.Qe2	11.Re1	11.Nd4
1890s	3	67%	33%	—	—
1900s	1	—	100%	—	—
1910s	12	33%	—	67%	—
1920s	44	59%	20%	14%	7%
1930s	40	30%	45%	15%	8%
1940s	53	43%	42%	8%	6%
1950s	35	34%	51%	6%	3%
1960s	40	55%	38%	5%	—
1970s	59	54%	32%	7%	3%
1980s	122	67%	25%	4%	2%
1990s	158	69%	18%	11%	1%
2000s	374	71%	11%	13%	4%
2010s	367	81%	5%	10%	2%
2020s	145	86%	3%	8%	2%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
11.Bc2	81%	86%	▲ +5.3%
11.Qe2	5%	3%	▼ -1.7%
11.Re1	10%	8%	▼ -2.8%
11.Nd4	2%	2%	-0.1%

Joueurs célèbres

Champions du monde dans cette position

Euwe, Max — 10 parties
Anand, Viswanathan — 8 parties
Lasker, Emanuel — 6 parties
Carlsen, Magnus — 6 parties
Tal, Mikhail — 4 parties
Botvinnik, Mikhail — 2 parties
Karpov, Anatoly — 2 parties
Hou, Yifan — 2 parties
Kasparov, Garry — 1 partie

Parties historiques

11.Bc2 — 69.6% (1011 parties)

1897 — PooleBertlin vs Mason, James — 0-1 — London ENG
1897 — Poole P H vs Mason, James — 0-1 — ?
1911 — Asher, V. vs Smith, WH. — 1-0 — California
1919 — Pedzich, Dominik vs Flamberg, Alexander — 1-0 — Warsaw POL
1919 — Bogoljubow, Efim vs Reti, Boldizsar Tibor — 1-0 — Stockholm SWE

11.Qe2 — 15.7% (228 parties)

1898 — Lasker, Emanuel vs Moore, Harry — 0-1 — Great Britain
1900 — Bigot, Louis vs Nilsson, Zandor — 0-1 — Korr-OS final
1921 — Euwe, Max vs Harold Miles Silvanus — 1-0 — Broadstairs ENG
1921 — Borovsky, Adam vs Euwe, Max — 0-1 — Broadstairs
1922 — Znosko-Borovsky, Eugene vs Wahltuch, Victor — 1-0 — London ENG

11.Re1 — 10.5% (152 parties)

1913 — Fazekas, Istvan vs Nagy, Geza — 1-0 — Satoraljaujhely
1914 — Kostic, Boris vs Spielmann, Rudolf — 1/2-1/2 — St. Petersburg (Russ
1914 — Lasker, Emanuel vs Tarrasch, Siegbert — 1/2-1/2 — RUS St. Petersburg
1916 — Fox, Albert vs Schroeder, Marc — 0-1 — ?
1916 — Fox, Albert vs Schroeder, Andre — 0-1 — New York, NY USA

11.Nd4 — 2.8% (41 parties)

1920 — Bergman Olsson, Eleonora vs Bergdahl Larsson, Rasmus — 1-0 — Goteborg SWE
1920 — Nilsson, Oscar vs Erichsen, Axel Martinius — 1/2-1/2 — Goteborg SWE
1923 — Thomas, George Alan vs Yates, Frederic D — 1-0 — Southsea
1935 — Damsescu vs Chalupetzky — 0-1 — cr.
1938 — Keres, Paul Petrovich vs Fine, Reuben — 1/2-1/2 — NED

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

Cases

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

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● e

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bb3	● Bb3 Actif (mob. 4)
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 Amsterdam m1 – Round 4 – Kroone, Gerard – 1-0 – Euwe, Max – G4 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 Hastings 2122 Premier 2nd – Round 5 – Yates, Frederic D – 1-0 – Sergeant, Edward – 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
1923 Amsterdam – Round 13 – Euwe, Max – 1-0 – Sonnenberg, Andre – G22 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 GBR Ch 16th – Round 4 – Thomas, George Alan – 1-0 – Yates, Frederic D – 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
1932 Nt Hamburg-Altona GER – Round 4 – Taube, Herbert – 1/2-1/2 – Brinckmann, Alfred – G10 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
1937 Bad Saarow – Round 3 – Engels, Ludwig – 0-1 – Kuppe, Wilhelm – 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
1945 Buenos Aires Circulo – Round 4 – Rauch, Marie-Louise – 1/2-1/2 – Maderna, Carlos – G16 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 ARG-ESP radio m – Round 1.3 – Bolbochan, J. – 0-1 – Arenas Albareda, Marc – 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
1946 Augsburg 1st – Round 1 – Saemisch, Friedrich – 1/2-1/2 – Unzicker, Wolfgang – G2 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
1950 Dubrovnik olm – Round 2 – Castillo Bermudez, Manuel – 1/2-1/2 – Euwe, Max – 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
1964 URS-ch32 – Round ? – Vasiukov, Evgeni – 1/2-1/2 – Suetin, Alexey S – G7 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 POL Ch 24th – Round 1 – Paczuski, Wladislaw – 1/2-1/2 – Sydor, Andrzej – G1 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
22. ECU Club Cup 2006 – Round 4 – Boros, Denes – 1/2-1/2 – Delchev, Aleksander – G98 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
6. Norway Chess 2018 – Round 7.3 – Vachier-Lagrave, Maxime – 0-1 – Anand, Viswanathan – G30 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
TCh-RUS 2008 – Round 8 – Kamsky, Gata – 1-0 – Korchnoi, Viktor – G226 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
World Blitz 2007 – Round 34 – Shirov, Alexei – 1/2-1/2 – Ivanchuk, Vasyl – G334 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

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