Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→e3, e3→d4	● a6→b5, f7→e6
Passés	—	—
Majorité	—	● aile dame 3v2

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e5 (2v0)	● e4 (2v1), ● d5 (4v2)
Cases faibles	—	—
Centre	● e5 (2v0)	● d5 (4v2), ● e4 (2v1)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● c	● d

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 1)
Bb3	● Bb3 Actif (mob. 6)
Bb7		● Bb7 Actif (mob. 5)
Bf8		● Bf8 Non développé (mob. 2)
Paire de fous	● Oui	● Oui
Non développées	2 (● c1, ● a1)	4 (● b8, ● 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	● d4-d5	● …e6-e5

D29b — QGA: Classical, 8…Bb7 9.Nc3

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 b5 8.Bb3 Bb7 9.Nc3 * ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Rd1 (87 % des parties) ; e4 (Occuper le centre — 3 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Nbd7 (Développer b8 — 84 % des parties) ; ...Be7 (Développer f8 — 6 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1910 BCF Ch 7th – Round 9 – Wainwright snr, George Edward – 1-0 – Blackburne, Joseph – G20 1. d4 Nf6 2. Nf3 c5 3. e3 e6 4. c4 d5 5. Nc3 dxc4 6. Bxc4 a6 7. O-O b5 8. Bb3 Bb7 9. Qe2 c4 10. Bc2 Nc6
1944 Mar del Plata – Round 1 – Maderna, Carlos – 0-1 – Pilnik, Herman – G3 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. Qe2 b5 8. Bb3 Bb7 9. Nc3 Be7 10. dxc5 Nbd7
1945 Mar del Plata it-8 – Round 10 – Bolbochan, J. – 1-0 – Pilnik, Herman – G19 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. Nc3 b5 8. Bb3 Bb7 9. Qe2 Be7 10. Rd1 Qb6
1946 Londen II – Round 11 – Wood, Gabriel – 1-0 – Devos, Paul – G29 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. Qe2 b5 8. Bb3 Bb7 9. Nc3 b4 10. Na4 Nbd7
1949 Budapest-Moscow – Round 14 – Kotov Lundqvist, Alex – 1-0 – Fuster, Geza – G103 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. e3 e6 5. Nc3 a6 6. Bd3 dxc4 7. Bxc4 b5 8. Bb3 c5 9. O-O Bb7 10. Qe2 cxd4
1949 URS Ch, semi final – Round 9 – Grechkin, Dmitry M – 1/2-1/2 – Vasiliev, Viktor A – G71 1. c4 e6 2. Nc3 d5 3. d4 Nf6 4. Nf3 c6 5. e3 a6 6. Bd3 dxc4 7. Bxc4 b5 8. Bb3 c5 9. O-O Bb7 10. Qe2 Be7
1952 Mar del Plata – Round 5 – Bolbochan, J. – 1/2-1/2 – Michel, Pascal – G35 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6 5. e3 a6 6. Bd3 dxc4 7. Bxc4 b5 8. Bb3 c5 9. O-O Bb7 10. Qe2 Be7
1953 FRG Ch 02nd – Round 12 – Heinicke, Herbert – 1-0 – Lehmann, Heinz – G26 1. d4 d5 2. c4 e6 3. Nf3 c6 4. e3 Nf6 5. Bd3 dxc4 6. Bxc4 c5 7. O-O a6 8. Nc3 b5 9. Bb3 Bb7 10. Qe2 Nbd7
1953 Mar del Plata – Round 2 – Ojanen, Kaarle S – 1/2-1/2 – Pilnik, Herman – G40 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 a6 6. Nc3 c5 7. O-O b5 8. Bb3 Bb7 9. Qe2 Be7 10. Rd1 O-O
1954 Bucharest – Round 3 – Pachman, Ludek – 1/2-1/2 – Wade, Robert G – G34 1. c4 Nf6 2. d4 e6 3. Nf3 d5 4. Nc3 c6 5. e3 a6 6. Qc2 dxc4 7. Bxc4 b5 8. Bb3 c5 9. Qe2 Bb7 10. O-O Be7
1955 Buenos Aires CA – Round 9 – Bisguier, Arthur B – 1/2-1/2 – Pachman, Ludek – G64 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. e3 dxc4 6. Bxc4 a6 7. O-O b5 8. Bb3 Bb7 9. Qe2 Be7 10. e4 b4
1955 Erfurt – Round 10 – Fuchs, Reinhart – 0-1 – Uhlmann, Wolfgang – G60 1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. d4 dxc4 5. e3 a6 6. Bxc4 b5 7. Bb3 c5 8. O-O Bb7 9. Qe2 Be7 10. dxc5 Nbd7
1955 New York Rosenwald5455 – Round 2 – Sherwin, James T – 1-0 – Kramer, George – G4 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. Qe2 b5 8. Bb3 Bb7 9. Nc3 Qc7 10. Rd1 Nc6
1955 Zagreb – Round 4 – Filip, Marius Liviu – 1/2-1/2 – Bisguier, Arthur B – G53 1. d4 Nf6 2. Nf3 d5 3. c4 c5 4. e3 e6 5. Nc3 dxc4 6. Bxc4 a6 7. O-O b5 8. Bb3 Bb7 9. Qe2 Be7 10. dxc5 Nbd7
1956 URS Ch, semi final – Round 1 – Kortchnoi, V. – 1-0 – Polugaevsky, L. – G12 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. Qe2 b5 8. Bb3 Bb7 9. Nc3 Be7 10. dxc5 O-O
1957 Leningrad – Round 2.5 – Kluger, Carsten – 1-0 – Furman, Slavomir – G35 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 c5 5. Bxc4 e6 6. O-O a6 7. Nc3 b5 8. Bb3 Bb7 9. Qe2 Be7 10. Rd1 O-O
1958 Riga ch-URS – Round 1 – Furman, Slavomir – 0-1 – Bannik, Anatolij – G19 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. Qe2 b5 8. Bb3 Bb7 9. Nc3 cxd4 10. exd4 Be7
1959 OWL Ch – Round 7 – Oestreich, Reinhard – 1/2-1/2 – Beerheide, Walther – G14 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Nc3 e6 5. e3 a6 6. Bxc4 b5 7. Bb3 Bb7 8. O-O c5 9. Qe2 Be7 10. Rd1 Qc7
1960 Leipzig olm fin-A – Round 10 – Ivkov, Borislav – 1/2-1/2 – Clarke, Peter H – G171 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. Qe2 b5 8. Bb3 Bb7 9. Nc3 Nbd7 10. e4 cxd4
1960 Leipzig olm fin-A – Round 8 – Gligorić, Svetozar – 1/2-1/2 – Pietzsch, Wolfgang – G137 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. Qe2 b5 8. Bb3 Bb7 9. Nc3 Nbd7 10. e4 cxd4
1960 Sao Paulo zt – Round 10 – Schweber, Samuel – 1-0 – De Freitas, Manuela Schmitz – G51 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. Nc3 a6 5. e3 e6 6. Bxc4 c5 7. O-O b5 8. Bb3 Bb7 9. Qe2 b4 10. Na4 Nbd7
1960 UKR Ch sf – Round 4 – Nikolaevsky, Yuri V – 1/2-1/2 – Ousatchi, Mark – G21 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. Nc3 b5 8. Bb3 Bb7 9. Qe2 Nbd7 10. a4 b4
1962 Leningrad – Round 1 – Borisenko, Georgy K – 1/2-1/2 – Volpert, Larisa – G1 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. Qe2 b5 8. Bb3 Bb7 9. Nc3 b4 10. Na4 Nbd7
1963 Hastings-B6364 – Round 5 – Maschian, H. – 0-1 – Kinnmark, Ove – G8 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. Qe2 b5 8. Bb3 Bb7 9. Nc3 Nbd7 10. a4 b4
1964 BRA Ch – Round 13 – Holzmann Licurgo – 1/2-1/2 – De Freitas, Marcio Elisio – G45 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 e6 5. Bxc4 a6 6. O-O c5 7. Nc3 b5 8. Bb3 Bb7 9. Qe2 b4 10. Nb1 Nbd7

D29b — QGA: Classical (1910)

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 b5 8.Bb3 Bb7 9.Nc3

Les coups candidats

9…Nbd7 — 83.8% (763 parties)

Ambassadeurs : Hoi, Carsten (11x), Rapaka Samuel Paul (7x), Miguel, Nahuel (5x), Leitao, Rafael (5x), Clarke, Peter (4x), Ribli, Zoltan (4x), Slipak, Sergio (4x), Ibragimov, Ildar (4x)

9…Be7 — 5.7% (52 parties)

Ambassadeurs : Bisguier, Arthur B (2x), Pachman, Ludek (2x), Ojanen, Kaarle S (1x), Pilnik, Herman (1x), Kluger, Gyula (1x), Furman, Semyon (1x), Oestreich, Reinhard (1x), Beerheide, Walther (1x)

9…Nc6 — 3.4% (31 parties) →

Ambassadeurs : Honan, N. (1x), Akonde Marshall (1x), Barden, Leonard (1x), Clough, Fred (1x), Gusev, Yuri S (1x), Estrin, Yakov (1x), Janssen, Lieselotte (1x), Espig, Gesine (1x)

9…cxd4 — 2.6% (24 parties)

Ambassadeurs : Pilgaard, Kim (2x), Hoi, Carsten (2x), Yepez, Olavo (1x), Pena Felix, Gustavo Adolfo (1x), Abramovich Furman, Semyon (1x), Bannik, Anatolij (1x), Kalugin, Sergei (1x), Feoktistov, Alexey A. (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9…Nbd7	9…Be7	9…Nc6	9…cxd4
<1800	28	68%	7%	7%	4%
1800-2200	215	80%	4%	4%	5%
2200-2600	483	86%	6%	3%	2%
2600+	15	100%	—	—	—

Évolution par décennie (% des parties)

Décennie	N parties	9…Nbd7	9…Be7	9…Nc6	9…cxd4
1950s	38	61%	26%	8%	3%
1960s	58	88%	3%	—	2%
1970s	19	95%	—	5%	—
1980s	73	89%	5%	4%	—
1990s	176	89%	2%	2%	2%
2000s	257	81%	6%	4%	4%
2010s	219	84%	4%	3%	3%
2020s	71	82%	10%	3%	1%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9…Nbd7	84%	82%	▼ -2.8%
9…Be7	4%	10%	▲ +5.7%
9…Nc6	3%	3%	-0.4%
9…cxd4	3%	1%	▼ -1.8%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 2 parties
Anand, Viswanathan — 1 partie
Botvinnik, Mikhail — 1 partie

Parties historiques

9…Nbd7 — 83.8% (763 parties)

1950 — Smyslov, Vasily vs Keres, Paul Petrovich — 1/2-1/2 — Budapest HUN
1950 — Winter, William vs Newman, Richard — 1-0 — Buxton
1950 — Platz, Hans vs Herrmann, Ludwig — 1-0 — Soemmerda GER
1952 — Porrecca, Giorgio vs Lokvenc, Josef — 1/2-1/2 — Helsinki FIN
1952 — Rapaka Samuel Paul vs Lasker, Edward — 1-0 — Havana CUB

9…Be7 — 5.7% (52 parties)

1952 — Bolbochan, Jacobo vs Michel, Clement Paul — 1/2-1/2 — Mar del Plata ARG
1953 — Ojanen, Kaarle S vs Pilnik, Herman — 1/2-1/2 — Mar del Plata ARG
1954 — Pachman, Ludek vs Wade, Robert G — 1/2-1/2 — Bucharest ROU
1955 — Filip, Miroslav vs Bisguier, Arthur B — 1/2-1/2 — Zagreb CRO
1955 — Fuchs, Reinhart vs Uhlmann, Wolfgang — 0-1 — Erfurt GER

9…Nc6 — 3.4% (31 parties)

1950 — Honan, N. vs Akonde Marshall — 1-0 — England
1957 — Gusev, Yuri S vs Estrin, Yakov — 1-0 — Moscow RUS
1959 — Barden, Leonard vs Clough, Fred — 1/2-1/2 — York ch-BCF
1977 — Janssen, Lieselotte vs Espig, Gesine — 1/2-1/2 — Frankfurt/Oder
1981 — Behrens, Harald vs Paulsen, Dirk — 1-0 — NRW-Niedersachsen

9…cxd4 — 2.6% (24 parties)

1958 — Abramovich Furman, Semyon vs Bannik, Anatolij — 0-1 — Riga LAT
1969 — Yepez, Olavo vs Pena Felix, Gustavo Adolfo — 1-0 — Quito/Guayaquil
1992 — Klinger, Josef vs Hinterberger, Werner — 1-0 — Oberwart AUT
1994 — Moeller, Maarten vs Dauenheimer, Torsten — 1-0 — Wolfste ch-RLPF U20
1998 — Ballin, Andre vs Drewitz, Horst — 1-0 — Mecklenburg VP

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