D25j — QGA: Janowski-Larsen, 6.O-O

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 Bg4 5.Bxc4 e6 6.O-O * ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Nc3 (Développer b1 — 41 % des parties) ; h3 (Empêcher ...Bg4 — 24 % des parties) ; Nbd2 (Développer b1 — 11 % des parties) ; Be2 (8 % des parties) ; b3 (Préparer le fianchetto — 5 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Nbd7 (Développer b8 — 37 % des parties) ; ...a6 (Préparer expansion aile dame — 37 % des parties) ; ...Nc6 (Développer b8 — 9 % des parties) ; ...Bd6 (Fou actif (mobilité 9), Développer f8 — 9 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

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

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e5 (2v0)	● d5 (3v1), ● f5 (2v0)
Cases faibles	—	—
Centre	● d4 (3v1), ● e5 (2v0)	● d5 (3v1), ● e4 (1v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● c	● d

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 1)
Bc4	● Bc4 Actif (mob. 7)
Bg4		● Bg4 Actif (mob. 4)
Bf8		● Bf8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	3 (● b1, ● 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	● …c7-c5, ● …e6-e5

Partie
1906 BCF Ch 3rd – Round 7 – Atkins, Henry Ernest – 1-0 – Brown, Frank – G11 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. O-O Bd6 7. h3 Bh5 8. Nc3 c6 9. e4 Be7 10. Be3 Nbd7
1958 Munich olm fin-B – Round 9 – Szukszta, Janus – 1-0 – Enevoldsen, Jens – G82 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 Bg4 5. Bxc4 e6 6. O-O Nbd7 7. Nbd2 c5 8. Be2 a6 9. b3 Be7 10. Bb2 O-O
1960 Leningrad ch-URS – Round 15 – Kortchnoi, V. – 1-0 – Spassky, B. – G136 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. O-O a6 7. Qe2 Nc6 8. Rd1 Bd6 9. h3 Bh5 10. e4 Bxf3
1962 URS Team Ch – Round ? – Vistaneckis, Isakas – 1/2-1/2 – Klavins, Janis – G139 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. O-O Nc6 7. Nbd2 Bd6 8. Be2 O-O 9. Nc4 Qe7 10. b3 Rfd8
1963 BRA Ch – Round 15 – Belfort Mattos, Jose N – 1/2-1/2 – Camara, Helder – G44 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. O-O Nbd7 7. Nc3 Be7 8. Qe2 e5 9. h3 Bxf3 10. Qxf3 exd4
1963 Sarajevo – Round 9 – Uhlmann, Wolfgang – 1/2-1/2 – Ivkov, Borislav – G49 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. O-O a6 7. b3 c5 8. dxc5 Qxd1 9. Rxd1 Bxf3 10. gxf3 Bxc5
1963 URS – Round ? – Kapengut, Albert – 1-0 – Morgulov, Alexsander M – G2 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. O-O a6 7. Qe2 Nc6 8. Rd1 Be7 9. a3 a5 10. b3 O-O
1964 Lenzerheide-Clare Be – Round 2 – Prameshuber, Alexander – 1/2-1/2 – Blau, Max – G4 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 Bg4 5. Bxc4 e6 6. O-O Nbd7 7. Nc3 Bd6 8. e4 e5 9. dxe5 Nxe5 10. Be2 Nxf3+
1964 Tel Aviv olm fin-C – Round 4 – Colon Romero, Miguel – 1/2-1/2 – Boutteville, Cesar – G18 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. O-O a6 7. h3 Bxf3 8. Qxf3 Nc6 9. Nc3 Bd6 10. Rd1 Qe7
1964 Tel Aviv olm fin-C – Round 5 – Niemela, Ilmari Aarne – 0-1 – Bilyap, Siracettin – G27 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. O-O Nbd7 7. Nbd2 Be7 8. b3 O-O 9. Bb2 c5 10. Re1 Nb6
1965 Hamburg etc – Round 8 – Averbakh, Yuri L – 1-0 – Damjanovic, Marko – G94 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 Bg4 5. Bxc4 e6 6. O-O Nc6 7. Bb5 Bd6 8. Nbd2 O-O 9. Bxc6 bxc6 10. Qc2 Qe8
1965 Tbilisi – Round 1 – Alatortsev, Vladimir N. – 1-0 – Bokuchava, Alexander – G10 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. O-O Bd6 7. Nbd2 Nbd7 8. Be2 O-O 9. Nc4 Qe7 10. b3 Rfd8
1965 Wch women Riga LAT – Round 1 – Kushnir Aleksandr – 0-1 – Gaprindashvili, Nona – G1 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 Bg4 5. Bxc4 e6 6. O-O Nbd7 7. Nc3 Bd6 8. e4 e5 9. dxe5 Nxe5 10. Be2 Bxf3
1966 La Habana olm prel – Round 5 – Ciocaltea, Victor – 1/2-1/2 – Tringov, Georgi P – G175 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. O-O a6 7. Nc3 Nc6 8. Be2 Bd6 9. h3 Bh5 10. Bd2 O-O
1966 Rio Hondo zt – Round 9 – Miranda, Marcio Marcos do Carmo – 1-0 – Camara, Helder – G47 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. O-O a6 7. Nc3 Nc6 8. Be2 Bd6 9. b3 O-O 10. Bb2 Re8
1967 Maribor – Round 14 – Minev, B. – 1/2-1/2 – Matulovic, Milan – G20 1. d4 Nf6 2. Nf3 d5 3. c4 dxc4 4. e3 Bg4 5. Bxc4 e6 6. O-O a6 7. Be2 Nc6 8. b3 Bd6 9. Bb2 O-O 10. Nbd2 Qe8
1967 Maribor – Round 14 – Minev, Nikolay N – 1/2-1/2 – Matulovic, Milan – G76 1. d4 Nf6 2. Nf3 d5 3. c4 dxc4 4. e3 Bg4 5. Bxc4 e6 6. O-O a6 7. Be2 Nc6 8. b3 Bd6 9. Bb2 O-O 10. Nbd2 Qe8
1967 URS Team Ch – Round 1 – Osnos, Viatcheslav – 1/2-1/2 – Bronstein, David I – G29 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. O-O a6 7. Be2 Nc6 8. b3 Be7 9. Bb2 O-O 10. Nbd2 Na7
1968 Hoogovens – Round 14 – Kortchnoi, V. – 1/2-1/2 – Weiman Hort, Valentin – G118 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. O-O a6 7. b3 c5 8. dxc5 Qxd1 9. Rxd1 Bxc5 10. Bb2 Nc6
1968 Hungary – Round 1 – Liptay, Laszlo Dr. – 1/2-1/2 – Sapi, Laszlo – G33 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. O-O Nbd7 7. Nc3 Be7 8. h3 Bh5 9. e4 Nb6 10. Be2 O-O
1968 Lugano ol (Men) qual-G – Round 1 – Filip, Miroslav – 1-0 – Ibrahimoglu, Ismet – G2 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. O-O Nbd7 7. Nc3 Be7 8. e4 Nb6 9. Be2 O-O 10. Be3 c6
1968 Prague U26 – Round 11 – Kupka, Slavoj – 1-0 – Neduchal Zdenek – G44 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 Bg4 5. Bxc4 e6 6. O-O Nbd7 7. Nc3 Nb6 8. Be2 c5 9. Qb3 a6 10. Rd1 Qc7
1968 Reggio Emilia 6869 11th – Round 4 – Trincardi, Tullio – 1/2-1/2 – Zinser, Sylvain – G8 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. O-O a6 7. h3 Bh5 8. Nc3 Nc6 9. Be2 Be7 10. a3 O-O
1968 URS Team Ch – Round 1 – Koolmeister – 0-1 – Kupreichik, Viktor D – G31 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. O-O a6 7. Nbd2 Nc6 8. a3 Bd6 9. h3 Bh5 10. Qc2 O-O
1968 Yugoslavia – Round 3 – Vukic, Maroje – 0-1 – Matulovic, Milan – G2 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 Bg4 5. Bxc4 e6 6. O-O a6 7. Nc3 Nc6 8. Re1 Bd6 9. e4 Bxf3 10. gxf3 e5
1969 Moskou ch-URS – Round 1 – Taimanov, Mark E – 1/2-1/2 – Kupreichik, Viktor D – G22 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. O-O a6 7. Nbd2 c5 8. Be2 Nc6 9. dxc5 Bxc5 10. a3 a5
1975 Portoroz/Ljubljana – Round 11 – Portisch, Lajos – 1/2-1/2 – Osterman, Rudolf – G15 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. O-O a6 7. Nc3 Nc6 8. h3 Bh5 9. Be2 Bd6 10. b3 O-O
1975 URS Team Ch – Round 5 – Rytov, Boris – 1/2-1/2 – Govashelishvili, Genadij – G205 1. d4 Nf6 2. Nf3 d5 3. c4 dxc4 4. e3 Bg4 5. Bxc4 e6 6. O-O a6 7. b3 c5 8. Bb2 Nc6 9. Be2 Rc8 10. Nbd2 cxd4
Bugojno 1982 – Round 1 – Najdorf, Miguel – 1/2-1/2 – Andersson, Ulf 1949 – G58 1. Nf3 d5 2. d4 Nf6 3. c4 dxc4 4. e3 Bg4 5. Bxc4 e6 6. O-O Nbd7 7. h3 Bh5 8. Be2 Be7 9. Nc3 O-O 10. Qb3 Qb8
Tal Memorial Blitz 2008 – Round 34 – Ivanchuk, Vasyl – 1/2-1/2 – Tkachiev, Vladislav – G282 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. O-O Nc6 7. h3 Bh5 8. b3 Bd6 9. Bb2 O-O 10. Nbd2 a6
Tata Steel Masters 2024 - Round 10 - Warmerdam, Max - 0-1 - Abdusattorov, Nodirbek 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. O-O Nbd7 7. Nc3 c6 8. Be2 Be7 9. b3 O-O 10. Bb2 Rc8
World Blitz 2018 – Round 17.35 – Bazeev, German – 0-1 – Alekseenko, Kirill – G1011 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 Bg4 5. Bxc4 e6 6. O-O a6 7. Be2 Bd6 8. Nbd2 Nc6 9. Nc4 O-O 10. b3 Qe7
World Blitz 2018 – Round 2.28 – Yilmaz, Mustafa (34) – 0-1 – Alekseenko, Kirill – G93 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 Bg4 5. Bxc4 e6 6. O-O a6 7. Be2 Nc6 8. b3 Bd6 9. Bb2 O-O 10. Nbd2 Qe8

D25j — QGA: Janowski-Larsen (1906)

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 Bg4 5.Bxc4 e6 6.O-O

Les coups candidats

6…Nbd7 — 37.3% (406 parties)

Ambassadeurs : Matulovic, Milan (7x), Miles, Anthony J (6x), Vega Gutierrez, Sabrina (6x), Schmitz, Manuela (5x), Peng, Zhaoqin (5x), Rajkovic, Dusan (4x), Sarakauskiene, Zivile (4x), De Lomas Busquets, Alba (4x)

6…a6 — 37.2% (405 parties)

Ambassadeurs : Khamitskiy, Sergei (7x), Hort, Vlastimil (5x), Alekseenko, Kirill (5x), Zsiltzova-Lisenko, Lubov (5x), Matulovic, Milan (4x), Kiselev, Artiom (4x), Kocheev, Aleksandr (4x), Gonda, Laszlo (3x)

6…Nc6 — 8.9% (97 parties)

Ambassadeurs : Ptak, Pavel (3x), Fulgenzi, Ernesto (2x), Karpatchev, Aleksandr (2x), Jakubek, Peter (2x), Jahnz, Fabian (2x), Vistaneckis, Isakas (1x), Klavins, Janis (1x), Averbakh, Yuri L (1x)

6…Bd6 — 8.8% (96 parties)

Ambassadeurs : Cheng, Winter (4x), Jobava, Baadur (4x), Reimann, Sebastian (2x), Kaunz, Werner (1x), Vatarescu, P. (1x), Alatortsev, Vladimir N. (1x), Bokuchava, Alexander (1x), Maslennikova, Albina (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6…Nbd7	6…a6	6…Nc6	6…Bd6
<1800	34	32%	32%	12%	12%
1800-2200	407	42%	32%	9%	8%
2200-2600	483	33%	46%	10%	7%
2600+	4	25%	50%	25%	—

Évolution par décennie (% des parties)

Décennie	N parties	6…Nbd7	6…a6	6…Nc6	6…Bd6
1950s	3	67%	33%	—	—
1960s	49	47%	41%	4%	6%
1970s	65	54%	32%	3%	5%
1980s	54	43%	46%	—	9%
1990s	149	52%	21%	6%	9%
2000s	263	40%	35%	5%	10%
2010s	377	31%	46%	12%	4%
2020s	129	18%	31%	19%	22%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6…Nbd7	31%	18%	▼ -13.2%
6…a6	46%	31%	▼ -15.1%
6…Nc6	12%	19%	▲ +7.4%
6…Bd6	4%	22%	▲ +18.2%

Parties historiques

6…Nbd7 — 37.3% (406 parties)

1957 — Al Husari, Zita Fatima vs Szilagyi, Gyorgy Laszlo — 0-1 — Sofia zt Sofia BUL
1958 — Szukszta, Janus vs Enevoldsen, Jens — 1-0 — Munich GER
1963 — Keene, Raymond D vs Kalton, Nigel J — 1-0 — ?
1963 — Belfort Mattos, Jose N vs Camara, Helder — 1/2-1/2 — Recife
1963 — Meleghegyi, Csaba vs Asaturian, Sergei Rubenovich — 1-0 — Eberhardt Wilhelm Cup prel 63

6…a6 — 37.2% (405 parties)

1957 — Asmundsson, Ingvar vs Agustsson, Gudmundur — 1/2-1/2 — Reykjavik ISL
1960 — Korchnoi, Viktor vs Spassky, Boris V. — 1-0 — Leningrad ch-URS
1963 — Uhlmann, Wolfgang vs Ivkov, Borislav — 1/2-1/2 — Sarajevo BIH
1963 — Kapengut, Albert vs Morgulov, Alexsander M — 1-0 — Soviet Union
1964 — Colon Romero, Miguel vs Boutteville, Cesar — 1/2-1/2 — Tel Aviv ISR

6…Nc6 — 8.9% (97 parties)

1962 — Vistaneckis, Isakas vs Klavins, Janis — 1/2-1/2 — Leningrad RUS
1965 — Averbakh, Yuri L vs Damjanovic, Mato — 1-0 — Hamburg etc
1972 — Archer, Clark Emerson vs Littlewood, John E — 1/2-1/2 — Brighton ch-BCF
1974 — Loheac Ammoun, Frank vs Johannessen, Svein — 1/2-1/2 — Nice FRA
1992 — Justo, Damian vs Fulgenzi, Ernesto — 1-0 — Buenos Aires FMDA tt

6…Bd6 — 8.8% (96 parties)

1964 — Kaunz, Werner vs Vatarescu, P. — 1-0 — cr.
1965 — Alatortsev, Vladimir N. vs Bokuchava, Alexander — 1-0 — Tbilisi GEO
1966 — Maslennikova, Albina vs Fokina, Anna — 0-1 — USSR
1973 — Boettcher, Ilse vs Cheng, Winter — 1-0 — Halle/Saale
1976 — Nemet, Ivan vs Agur, Elieser — 1-0 — ?

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