C09l — French: Tarrasch, Open, Main Line, 9.Nb3 Bd6

1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5 5.Ngf3 Nc6 6.Bb5 Bd6 7.O-O Ne7 8.dxc5 Bxc5 9.Nb3 Bd6 * ○ Trait aux Blancs

Ouverture — Centre asymétrique

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

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Atouts. Les Blancs s'appuient sur une majorité de pions à l'aile_dame (3 contre 2), les cases fortes d4 et g5, un fou actif en b5, la paire de fous et la colonne semi-ouverte d.

Côté adverse. Le pion isolé d5, le fou enfermé en c8 et le roi resté au centre.

En contrepartie. Plusieurs pièces dorment encore (le fou c1 et la tour a1).

Plans. Be3 (Développer Bc1) ; h3 (Empêcher ...Bg4) ; Tour sur colonne e ; Tour sur colonne d.

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

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Atouts. Les Noirs s'appuient sur une majorité de pions à l'centre (1 contre 0), les cases fortes b4, e5 et f5, un fou actif en d6, la paire de fous et la colonne semi-ouverte c.

Côté adverse. Le fou enfermé en c1.

En contrepartie. Le roi n'est pas encore à l'abri, plusieurs pièces dorment encore (le fou c8 et les tours a8 et h8) et le pion isolé d5.

Plans. O-O (Mettre le roi en sécurité, connecter les tours) ; ...Bg4 (Développer Bc8, clouer Nf3) ; ...d4 (Rupture) ; ...f6 (Rupture) ; ...f5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	● d5
Arriérés	—	—
Chaînes	—	—
Passés	—	—
Majorité	● aile_dame 3v2	● centre 1v0

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● d4 (3v1), ● g5 (2v0)	● b4 (2v0), ● e5 (2v1), ● f5 (2v0)
Cases faibles	—	—
Centre	● d4 (3v1)	● e4 (1v0), ● e5 (2v1)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Ouvertes	● e	● e
Semi-ouvertes	● d	● c

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bb5	● Bb5 Actif (mob. 6)
Bd6		● Bd6 Actif (mob. 9)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Clouages	—	● knight c6
Non développées	2 (c1, a1)	3 (c8, 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	asymétrique
Ruptures	● c2-c3	● …d5-d4, ● …f7-f6, ● …f7-f5

Partie
1947 Moscow Ch – Round 1 – Ravinsky, Grigory – 1/2-1/2 – Bronstein, David I – G34 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Nc6 6. Ngf3 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bd6 10. Nfd4 O-O
1952 Saltsjobaden Interzonal – Round 2 – Gligorić, Svetozar – 1/2-1/2 – Petrosian, Tigran V – G11 1. d4 e6 2. e4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Nc6 6. Ngf3 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bd6 10. Be3 O-O
1954 Olympiad prel III – Round 1 – Matanovic, Aleksandar – 1/2-1/2 – Aloni, Itzchak – G20 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bd6 10. h3 O-O
1955 Prague tm – Round 5 – Pachman, Ludek – 1/2-1/2 – Barcza, Gedeon – G35 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Nc6 6. Ngf3 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bd6 10. Bd2 O-O
1956 Moscow olm fin-A – Round 9 – Ingerslev, Aage – 0-1 – Bronstein, David I – G157 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Nc6 6. Ngf3 Bd6 7. dxc5 Bxc5 8. O-O Ne7 9. Nb3 Bd6 10. Bxc6+ bxc6
1959 Alekhine Memorial – Round 10 – Aronin, Lev – 1/2-1/2 – Portisch, Lajos – G55 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bd6 10. Nfd4 O-O
1962 URS Team Ch – Round 1 – Krogius, Nikolai V – 0-1 – Heuer, Amy – G115 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Nc6 6. Ngf3 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bd6 10. Nfd4 O-O
1962 Varna olm – Round 8 – Padevsky, Nikola – 0-1 – Belkadi, Ridha – G378 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. dxc5 Bxc5 8. O-O Ne7 9. Nb3 Bd6 10. Nfd4 O-O
1963 Sarajevo – Round 5 – Ivkov, Borislav – 1/2-1/2 – Pachman, Ludek – G30 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Nc6 6. Ngf3 Bd6 7. dxc5 Bxc5 8. O-O Ne7 9. Nb3 Bd6 10. Be3 O-O
1964 Tel Aviv olm fin-A – Round 10 – Padevsky, Nikola – 1/2-1/2 – Pachman, Ludek – G225 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bd6 10. Be3 O-O
1965 Corr Wch5 – Round 1 – Estrin, Yakov – 1/2-1/2 – Zagorovsky, Vladimir – G25 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bd6 10. Be3 O-O
1965 Sarajevo – Round 12 – Suetin, Alexey S – 1/2-1/2 – Hort, Vlastimil – G83 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bd6 10. Bxc6+ bxc6
1965 Titograd – Round 11 – Parma, Bruno – 1-0 – Rajkovic, Dalibor – G80 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bd6 10. Bd2 Qc7
1965 Titograd – Round 9 – Bradvarevic, Aleksandar – 1/2-1/2 – Rajkovic, Dalibor – G65 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. dxc5 Bxc5 8. O-O Ne7 9. Nb3 Bd6 10. Be3 O-O
1966 Sunderland ch-BCF – Round 2 – Littlewood, John E – 1-0 – Little, EA. – G34 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bd6 10. Be3 O-O
1967 Harrachov – Round 1 – Pantazi, Emanuel A – 0-1 – Faibisovich, Vadim Z – G114 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. dxc5 Bxc5 8. O-O Ne7 9. Nb3 Bd6 10. Nfd4 O-O
1967 Sweden (ch) – Round 7 – Kinnmark, Ove – 1/2-1/2 – Ek, Hans – G37 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bd6 10. Nfd4 O-O
1967 Vrnjacka Banja zt – Round 5 – Matanovic, Aleksandar – 1-0 – Zuidema, Coen – G36 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bd6 10. Bd2 O-O
1967 YUG Ch 22th – Round 3 – Matanovic, Aleksandar – 1/2-1/2 – Marić, Rudolf – G16 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bd6 10. Bd2 O-O
1967 Zierikzee ch-NED – Round 5 – Zuidema, Coen – 1/2-1/2 – Bouwmeester, Hans – G30 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. dxc5 Bxc5 8. Nb3 Bd6 9. O-O Ne7 10. Bd2 O-O 1/2-1/2
1968 Kislovodsk – Round 1 – Gufeld, Eduard – 1/2-1/2 – Bronstein, David I – G24 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bd6 10. Bd2 O-O
1968 Kislovodsk – Round 4 – Gufeld, Eduard – 1/2-1/2 – Bronstein, David I – G43 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bd6 10. Bd2 O-O
1969 WchT U26 qual-A – Round 1.1 – Tukmakov, Vladimir B – 1/2-1/2 – Sigurjonsson, Gudmundur – G3 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. dxc5 Bxc5 8. O-O Ne7 9. Nb3 Bd6 10. Bxc6+ bxc6
1970 Palma de Mallorca Interzonal – Round 10 – Ivkov, Borislav – 1/2-1/2 – Uhlmann, Wolfgang – G229 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. dxc5 Bxc5 8. O-O Ne7 9. Nb3 Bd6 10. Bd2 O-O
1975 Milan – Round 3 – Petrosian, Tigran L. – 1/2-1/2 – Ljubojevic, Ljubomir – G10 1. d4 e6 2. e4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bd6 10. Bd2 O-O
Brussels blitz 1987 – Round 1 – Tal, Mikhail – 1-0 – Short, Nigel D – G84 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. dxc5 Bxc5 8. Nb3 Bd6 9. O-O Ne7 10. h3 O-O
Karpov - Korchnoi Candidates Final 1974 – Round 4 – Karpov, Anatoly – 1/2-1/2 – Korchnoi, Viktor – G2 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. dxc5 Bxc5 8. O-O Ne7 9. Nb3 Bd6 10. c3 Bg4
Linares 1992 – Round 2 – Speelman, Jon S – 0-1 – Jussupow, Artur – G12 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 4. ... Nc6 5. exd5 exd5 6. Bb5 Bd6 7. dxc5 Bxc5 8. Nb3 Bd6 9. O-O Ne7 10. a4 O-O
Milan 3pl 1975 – Round 3 – Petrosian, Tigran V. – 1/2-1/2 – Ljubojevic, Ljubomir – G3 1. d4 e6 2. e4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. O-O Ne7 8. dxc5 Bxc5 9. Nb3 Bd6 10. Bd2 O-O

C09l — Tarrasch Open Main Line

1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5 5.Ngf3 Nc6 6.Bb5 Bd6 7.O-O Ne7 8.dxc5 Bxc5 9.Nb3 Bd6

Eval: [+0.20]

Les coups candidats

10.Re1 — 40.9% (1416 parties) →

Ambassadeurs : Uhlmann, Wolfgang (31x), Vaganian, Rafael A (25x), Lputian, Smbat (23x), Portisch, Ferenc (17x), Schmidt, Wlodzimierz (14x), Huss, Andreas (13x), Liebert, Ervin (12x), Jansa, Vlastimil (12x)

10.Bg5 — 27.2% (941 parties) →

Ambassadeurs : Uhlmann, Wolfgang (34x), Portisch, Ferenc (16x), Vaganian, Rafael A (13x), Rodriguez Cespedes, Amador (6x), Padevsky, Nikola (5x), Szymczak, Zbigniew (5x), Lputian, Smbat (5x), Vogt, Lothar (5x)

10.Nbd4 — 10.9% (377 parties) →

Ambassadeurs : Matulovic, Milan (15x), Portisch, Ferenc (11x), Uhlmann, Wolfgang (6x), Raicevic, Vladimir (5x), Chorfi, Khaled (5x), Marjanovic, Slavoljub (5x), Matanovic, Aleksandar (4x), Radulov, Ivan (4x)

10.c3 — 8.5% (293 parties)

Ambassadeurs : Uhlmann, Wolfgang (5x), Portisch, Ferenc (5x), Lakos, Nikoletta (4x), Vaganian, Rafael A (4x), Estrin, Yakov (3x), Korchnoi, Viktor (3x), Velimirovic, Dragoljub (3x), Mackenzie, Colin (3x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	10.Re1	10.Bg5	10.Nbd4	10.c3
<1800	32	47%	28%	12%	6%
1800-2200	778	44%	24%	10%	10%
2200-2600	1742	42%	27%	8%	9%
2600+	83	53%	24%	1%	8%

Évolution par décennie (% des parties)

Décennie	N parties	10.Re1	10.Bg5	10.Nbd4	10.c3
1940s	6	—	33%	17%	17%
1950s	16	12%	12%	31%	12%
1960s	44	5%	—	41%	2%
1970s	372	15%	45%	18%	7%
1980s	589	33%	37%	17%	4%
1990s	796	41%	26%	12%	8%
2000s	886	54%	22%	6%	9%
2010s	651	49%	20%	5%	12%
2020s	98	39%	17%	10%	14%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
10.Re1	49%	39%	▼ -9.9%
10.Bg5	20%	17%	▼ -2.8%
10.Nbd4	5%	10%	▲ +5.4%
10.c3	12%	14%	▲ +2.0%

Joueurs célèbres

Champions du monde dans cette position

Karpov, Aleksandr — 6 parties
Tal, Mikhail — 5 parties
Kasparov, Garry — 4 parties
Karpov, Anatoly — 3 parties
Carlsen, Magnus — 2 parties
Anand, Viswanathan — 1 partie

Parties historiques

10.Re1 — 40.9% (1416 parties)

1956 — Kerr, Duncan vs Steinmeyer, Robert — 1/2-1/2 — Oklahoma City, OK USA
1957 — Toran Albero, Roman vs Kramer, Hanspeter — 1-0 — Beverwijk NED
1968 — Vasiukov, Evgeni vs Byrne, Ray — 1-0 — Reykjavik ISL
1969 — Barczay, Laszlo vs Sigurjonsson, Gudmundur — 1/2-1/2 — Raach
1971 — Tseshkovsky, Vitaly vs Gulko, Boris — 0-1 — Novosibirsk RUS

10.Bg5 — 27.2% (941 parties)

1946 — Bronstein, David I vs Furman, Slavomir — 1-0 — Leningrad RUS
1949 — Kan, Ilya A vs Khasin, Abram — 1/2-1/2 — Moscow RUS
1954 — Djurasevic, Bozidar vs Matanovic, Aleksandar — 0-1 — Belgrade SRB
1958 — Pogats, Jozsef Jr. vs Portisch, Lajos — 0-1 — Budapest HUN
1970 — Larsen, Benjamin Holsko vs Andersson, Ulf — 1-0 — Siegen olm

10.Nbd4 — 10.9% (377 parties)

1940 — Bondarevsky, Igor vs Alatortsev, Vladimir N. — 1/2-1/2 — Kiev UKR
1954 — Heemsoth, Hermann vs Bigot, Louis — 1/2-1/2 — cor TS-36-1
1956 — Karaklajic, Nikola vs Petrosian, Tigran A. — 1/2-1/2 — Belgrade SRB
1957 — Mangini, Jose Henrique de Mello vs Bianco Esposito, Antonio — 1/2-1/2 — Rio de Janeiro BRA
1958 — Krogius, Nikolai V vs Uusi, Gunnar — 1/2-1/2 — Rostov on Don

10.c3 — 8.5% (293 parties)

1947 — Snaevarr, Arni vs Moller, Baldur Helgi — 1/2-1/2 — Reykjavik ISL
1951 — Mukhitdinov, Mamadzhan vs Petrosian, Tigran A. — 1/2-1/2 — Tashkent UZB
1959 — Walther, Edgar vs Dueckstein, Andreas — 1-0 — Zurich SUI
1966 — Walther, Edgar vs Nilsson, Zandor — 1-0 — La Habana olm prel
1970 — Sharif, Mehrshad vs Kebbekus, Thomas — 1/2-1/2 — Siegen GER

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