D41i — QGD: Semi-Tarrasch, 6.g3, Main Line, 9.Nxd5 exd5 10.dxc5 Bxc5

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5 Nxd5 6.g3 Nc6 7.Bg2 Be7 8.O-O O-O 9.Nxd5 exd5 10.dxc5 Bxc5 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte f4, case forte g5, paire de fous, colonne d.
Faiblesses adverses : isolé d5, Bc8 enfermé.
Problèmes : Bc1 enfermé, Bg2 enfermé.
Plans :
● Be3 — Développer Bc1
● h3 — Empêcher ...Bg4
● Rc — Tour sur colonne c
● Rd — Tour sur colonne d

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte b4, Bc5 actif, paire de fous, colonne e.
Faiblesses adverses : Bc1 enfermé, Bg2 enfermé.
Problèmes : Bc8 enfermé, isolé d5.
Plans :
● ...Bg4 — Développer Bc8, clouer Nf3
● ...d4 — Rupture
● ...f6 — Rupture
● ...f5 — Rupture
● ...Rc — Tour sur colonne c

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

D41i — Semi-Tarrasch Main Line

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5 Nxd5 6.g3 Nc6 7.Bg2 Be7 8.O-O O-O 9.Nxd5 exd5 10.dxc5 Bxc5

Eval: [+0.20]

Les coups candidats

11.Bg5 — 43.0% (390 parties) →

Ambassadeurs : Tukmakov, Vladimir B (5x), Farago, Ivan (5x), Anand, Viswanathan (5x), Greenfeld, Alon (5x), Portisch, Lajos (4x), Agdestein, Simen (4x), Wallinger, Manfred (4x), Larsen, Benjamin Holsko (4x)

11.Qc2 — 19.4% (176 parties)

Ambassadeurs : Adorjan, Andras (6x), Mihaljcisin, Mihajlo (3x), Quinteros, Miguel A. (3x), Gruenfeld, Yehuda (3x), Bergstrom, Christer (3x), Hansen, Lars Bo (3x), Podlesnik, Bogdan (3x), Szabo, Laszlo (2x)

11.a3 — 12.0% (109 parties)

Ambassadeurs : Portisch, Lajos (3x), Alburt, Lev (3x), Parma, Bruno (3x), Tal, Mikhail (2x), Petrosian, Tigran V. (2x), Vaganian, Rafael A (2x), Rind, Bruce (2x), Hartston, William R (2x)

11.b3 — 9.2% (83 parties)

Ambassadeurs : Uhlmann, Wolfgang (7x), Farago, Ivan (3x), Schussler, Harry (2x), Moehring, Guenther (2x), Adamski, Jan (2x), Najdorf, Miguel (2x), Alburt, Lev (2x), Gruenfeld, Yehuda (2x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	11.Bg5	11.Qc2	11.a3	11.b3
<1800	13	15%	62%	15%	—
1800-2200	129	42%	28%	10%	6%
2200-2600	578	43%	18%	12%	11%
2600+	50	66%	6%	12%	4%

Évolution par décennie (% des parties)

Décennie	N parties	11.Bg5	11.Qc2	11.a3	11.b3
1930s	3	33%	—	—	—
1940s	2	—	—	—	50%
1950s	4	25%	25%	25%	—
1960s	19	26%	11%	21%	5%
1970s	79	22%	10%	22%	16%
1980s	197	26%	27%	17%	14%
1990s	182	46%	23%	9%	5%
2000s	209	62%	19%	6%	6%
2010s	182	52%	14%	11%	8%
2020s	30	27%	17%	20%	7%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
11.Bg5	52%	27%	▼ -25.5%
11.Qc2	14%	17%	▲ +2.4%
11.a3	11%	20%	▲ +9.0%
11.b3	8%	7%	▼ -1.6%

Joueurs célèbres

Champions du monde dans cette position

Anand, Viswanathan — 7 parties
Tal, Mikhail — 6 parties
Karpov, Anatoly — 3 parties
Kramnik, Vladimir — 3 parties
Smyslov, Vladimir — 2 parties
Karpov, Aleksandr — 2 parties
Ding, Liren — 1 partie

Parties historiques

11.Bg5 — 43.0% (390 parties)

1938 — Maderna, Carlos vs Guimard, Carlos E — 0-1 — Buenos Aires ARG
1951 — Rossolimo, Nicolas vs Broadbent, Reginald — 1-0 — Birmingham ENG
1962 — Geller, Efim P. vs Keres, Paul Petrovich — 1/2-1/2 — Curacao AHO
1963 — Lengyel, Laszlo vs Portisch, Lajos — 1/2-1/2 — Budapest ch-HUN
1964 — Darga, Klaus vs Portisch, Lajos — 0-1 — Beverwijk NED

11.Qc2 — 19.4% (176 parties)

1950 — Stahlberg, Gideon vs Kottnauer, Cenek — 1-0 — Amsterdam NED
1964 — Szabo, Laszlo vs Flesch, Janos — 1-0 — Belgrade SRB
1964 — Szabo, Laszlo vs Flesch, János — 1-0 — Belgrade SRB
1971 — Stein, Leonid vs Parma, Bruno — 1-0 — Erevan ARM
1977 — Busch, Raimund vs Techmer Gerhard — 1/2-1/2 — corr FRG/K

11.a3 — 12.0% (109 parties)

1952 — Toran Albero, Roman vs Cobo Arteaga, Eldis — 1/2-1/2 — Havana CUB
1963 — Petrosian, Tigran A. vs Tal, Mikhail — 1-0 — Moscow RUS
1963 — Petrosian, Tigran V. vs Tal, Mikhail — 1-0 — Moscow RUS
1964 — Bobotsov, Milko G vs Lengyel, Laszlo — 1/2-1/2 — Beverwijk NED
1966 — Golombek, Harry vs Tatai, Stefano — 0-1 — Venice ITA

11.b3 — 9.2% (83 parties)

1942 — Poltoranov vs Poliak, Abram — 1-0 — Sverdlovsk
1969 — Schoeneberg, Manfred vs Wehnert, Lutz — 0-1 — Schwerin GER
1975 — Huebner, Robert vs Ivkov, Borislav — 1-0 — GER
1976 — O'Kelly de Galway, Alberic vs Palatnik, Semon — 1/2-1/2 — Solingen GER
1976 — Uhlmann, Wolfgang vs Moehring, Guenther — 1/2-1/2 — Groeditz GER

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	● d5
Arriérés	—	—
Chaînes	● f2→g3, h2→g3	—
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● f4 (2v0), ● g5 (2v1)	● b4 (2v0)
Cases faibles	● d4	—
Centre	—	● e4 (1v0)

Colonnes et diagonales

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

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bg2	● Bg2 Enfermé (mob. 2)
Bc5		● Bc5 Actif (mob. 8)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Clouages	● pawn f2	—
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	● e2-e3	● …d5-d4, ● …f7-f6, ● …f7-f5

Partie
? 1978 – Round 6 – Portisch, Lajos – 1/2-1/2 – Spassky, Boris V. – G3 1. c4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. g3 e6 5. Bg2 d5 6. cxd5 Nxd5 7. O-O Be7 8. d4 O-O 9. Nxd5 exd5 10. dxc5 Bxc5
1942 Sverdlovsk – Round 2 – Poltoranov – 1-0 – Poliak, Abram – G12 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 Be7 5. O-O O-O 6. d4 c5 7. cxd5 Nxd5 8. Nc3 Nc6 9. Nxd5 exd5 10. dxc5 Bxc5
1949 Moskou ch-URS – Round 1 – Smyslov, Vladimir – 1-0 – Aronin, Lev – G7 1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 c5 5. cxd5 Nxd5 6. Nc3 Nc6 7. O-O Be7 8. d4 O-O 9. Nxd5 exd5 10. dxc5 Bxc5
1950 Amsterdam – Round 1 – Stahlberg, Gideon – 1-0 – Kottnauer, Cenek – G4 1. c4 Nf6 2. Nc3 e6 3. Nf3 c5 4. g3 Nc6 5. Bg2 d5 6. cxd5 Nxd5 7. O-O Be7 8. d4 O-O 9. Nxd5 exd5 10. dxc5 Bxc5
1952 Havana – Round 1 – Toran Albero, Roman – 1/2-1/2 – Cobo Arteaga, Eldis – G40 1. Nf3 Nf6 2. g3 d5 3. Bg2 e6 4. O-O Be7 5. d4 O-O 6. c4 c5 7. cxd5 Nxd5 8. Nc3 Nc6 9. Nxd5 exd5 10. dxc5 Bxc5
1956 Leningrad ch-URS – Round 1 – Kholmov, Ratmir D – 1-0 – Antoshin, Vladimir S – G6 1. c4 c5 2. Nc3 e6 3. Nf3 Nf6 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Be7 7. O-O Nc6 8. d4 O-O 9. Nxd5 exd5 10. dxc5 Bxc5
1960 Leipzig olm fin-A – Round 6 – Eliskases, Erich – 1/2-1/2 – Keres, Paul Petrovich – G95 1. c4 Nf6 2. Nc3 e6 3. Nf3 c5 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Be7 7. O-O O-O 8. Nxd5 exd5 9. d4 Nc6 10. dxc5 Bxc5
1963 Asztalos Memorial – Round 8 – Tal, Mikhail – 1/2-1/2 – Lengyel, Laszlo – G21 1. Nf3 Nf6 2. c4 c5 3. g3 e6 4. Bg2 Nc6 5. O-O d5 6. cxd5 Nxd5 7. Nc3 Be7 8. d4 O-O 9. Nxd5 exd5 10. dxc5 Bxc5
1963 Moscow – Round 1 – Petrosian, Tigran A. – 1-0 – Tal, Mikhail – G3 1. c4 Nf6 2. g3 e6 3. Bg2 c5 4. Nf3 d5 5. O-O Nc6 6. cxd5 Nxd5 7. d4 Be7 8. Nc3 O-O 9. Nxd5 exd5 10. dxc5 Bxc5
1963 URS Team Ch – Round ? – Petrosian, Tigran V – 1-0 – Tal, Mikhail – G27 1. c4 Nf6 2. g3 e6 3. Bg2 c5 4. Nf3 d5 5. O-O Nc6 6. cxd5 Nxd5 7. d4 Be7 8. Nc3 O-O 9. Nxd5 exd5 10. dxc5 Bxc5
1964 Belgrade – Round 5 – Szabo, Laszlo – 1-0 – Flesch, János – G34 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. g3 Nf6 5. Bg2 O-O 6. Nf3 c5 7. cxd5 Nxd5 8. Nxd5 exd5 9. O-O Nc6 10. dxc5 Bxc5
1964 Capablanca Memorial – Round 6 – O'Kelly, Albéric de Galway – 1/2-1/2 – Portisch, Lajos – G60 1. c4 c5 2. Nf3 Nf6 3. Nc3 e6 4. g3 Nc6 5. Bg2 d5 6. cxd5 Nxd5 7. O-O Be7 8. d4 O-O 9. Nxd5 exd5 10. dxc5 Bxc5
1964 Hoogovens – Round 13 – Bobotsov, Milko G – 1/2-1/2 – Lengyel, Laszlo – G62 1. c4 Nf6 2. Nc3 c5 3. g3 e6 4. Nf3 Nc6 5. Bg2 d5 6. cxd5 Nxd5 7. O-O Be7 8. d4 O-O 9. Nxd5 exd5 10. dxc5 Bxc5
1964 Liberation – Round 5 – Szabo, Laszlo – 1-0 – Flesch, Janos – G14 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. g3 Nf6 5. Bg2 O-O 6. Nf3 c5 7. cxd5 Nxd5 8. Nxd5 exd5 9. O-O Nc6 10. dxc5 Bxc5
1964 Rubinstein Memorial – Round 15 – Witkowski, Stanislaw – 1/2-1/2 – Parma, Bruno – G65 1. c4 c5 2. Nc3 Nf6 3. g3 e6 4. Bg2 Nc6 5. Nf3 d5 6. d4 Be7 7. O-O O-O 8. cxd5 Nxd5 9. Nxd5 exd5 10. dxc5 Bxc5
1967 FRG Ch Kiel GER – Round 7 – Huebner, Robert – 1/2-1/2 – Degenhardt, Norbert – G27 1. c4 Nf6 2. Nc3 e6 3. g3 c5 4. Nf3 Nc6 5. Bg2 d5 6. cxd5 Nxd5 7. O-O Be7 8. Nxd5 exd5 9. d4 O-O 10. dxc5 Bxc5
1968 It Buesum GER – Round 12 – Hecht, Hans-Joachim – 1/2-1/2 – Parma, Bruno – G54 1. c4 Nf6 2. Nc3 e6 3. Nf3 c5 4. g3 Nc6 5. Bg2 Be7 6. O-O O-O 7. d4 d5 8. cxd5 Nxd5 9. Nxd5 exd5 10. dxc5 Bxc5
1969 DDR Ch 18th – Round ? – Schoeneberg, Manfred – 0-1 – Wehnert, Lutz – G18 1. c4 Nf6 2. Nc3 c5 3. Nf3 d5 4. cxd5 Nxd5 5. g3 e6 6. Bg2 Be7 7. O-O O-O 8. Nxd5 exd5 9. d4 Nc6 10. dxc5 Bxc5
1971 Moscow – Round 12 – Petrosian, Tigran V. – 1/2-1/2 – Hort, Vlastimil – G9 1. c4 c5 2. Nf3 Nf6 3. g3 Nc6 4. Bg2 d5 5. cxd5 Nxd5 6. Nc3 e6 7. O-O Be7 8. Nxd5 exd5 9. d4 O-O 10. dxc5 Bxc5
1972 San Antonio – Round ? – Petrosian, Aram – 1/2-1/2 – Keres, Paul – G16 1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 c5 5. cxd5 Nxd5 6. O-O Nc6 7. Nc3 Be7 8. Nxd5 exd5 9. d4 O-O 10. dxc5 Bxc5
1972 San Antonio – Round 1 – Petrosian, Tigran V. – 1/2-1/2 – Keres, Paul – G23 1. c4 Nf6 2. Nc3 e6 3. Nf3 c5 4. g3 Be7 5. Bg2 O-O 6. d4 d5 7. cxd5 Nxd5 8. O-O Nc6 9. Nxd5 exd5 10. dxc5 Bxc5
Bugojno 1978 – Round 6 – Portisch, Lajos – 1/2-1/2 – Spassky, Boris V. – G38 1. c4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. g3 e6 5. Bg2 d5 6. cxd5 Nxd5 7. O-O Be7 8. d4 O-O 9. Nxd5 exd5 10. dxc5 Bxc5
Interpolis 1984 – Round 1 – Huebner, Robert – 1/2-1/2 – Tukmakov, Vladimir B – G7 1. c4 Nf6 2. Nc3 c5 3. g3 e6 4. Nf3 d5 5. cxd5 Nxd5 6. Bg2 Nc6 7. O-O Be7 8. Nxd5 exd5 9. d4 O-O 10. dxc5 Bxc5
Mar del Plata 1982 – Round 1 – Panno, Oscar – 1/2-1/2 – Karpov, Anatoly – G3 1. c4 c5 2. Nf3 Nf6 3. Nc3 e6 4. g3 Nc6 5. Bg2 d5 6. cxd5 Nxd5 7. O-O Be7 8. d4 O-O 9. Nxd5 exd5 10. dxc5 Bxc5

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