A89g — Dutch: Leningrad, Main Line, 7.Nc3 Nc6 8.d5 Na5 9.Nd2

1.d4 f5 2.c4 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3 O-O 6.O-O d6 7.Nc3 Nc6 8.d5 Na5 9.Nd2 * ● Trait aux Noirs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Exploiter la case forte b5.

Atouts. Les Blancs s'appuient sur la case forte b5, un fou actif en g2 et la paire de fous.

Côté adverse. Les fous enfermés en g7 et c8.

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

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Exploiter la case forte g4.

Atouts. Les Noirs s'appuient sur la case forte g4, un avant-poste en g4 et la paire de fous.

Côté adverse. Le fou enfermé en c1.

En contrepartie. Plusieurs pièces dorment encore (le fou c8 et la tour a8).

Plans. ...c6 (Rupture) ; ...c5 (Rupture) ; ...e6 (Rupture) ; ...e5 (Rupture) ; ...f4 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→g3, h2→g3, c4→d5	● g6→f5, c7→d6, e7→d6, h7→g6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (2v0)	● g4 (2v0)
Cases faibles	● e4	● d5
Centre	● d5 (3v1), ● e4 (3v2)	● e5 (1v0)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bg2	● Bg2 Actif (mob. 4)
Bg7		● Bg7 Enfermé (mob. 2)
Bc8		● Bc8 Non développé (mob. 2)
Paire de fous	● Oui	● Oui
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	fermé
Ruptures	● c4-c5, ● e2-e3, ● f2-f3	● …c7-c6, ● …c7-c5, ● …e7-e6, ● …e7-e5, ● …f5-f4

Partie
1956 Budapest Alekhine – Round 1 – Portisch, Lajos – 1/2-1/2 – Haag, Ervin – G1 1. c4 f5 2. d4 Nf6 3. g3 g6 4. Bg2 Bg7 5. Nc3 O-O 6. Nf3 d6 7. O-O Nc6 8. d5 Na5 9. Nd2 c5 10. Qc2 a6
1957 WchT U26 04th – Round 1.4 – Olafsson, Thorir – 1-0 – Haag, Ervin – G10 1. d4 f5 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. O-O O-O 6. c4 d6 7. Nc3 Nc6 8. d5 Na5 9. Nd2 c5 10. e3 e6
1958 HUN Ch Budapest HUN – Round 8 – Kluger, Gyula – 0-1 – Haag, Ervin – G38 1. c4 f5 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. O-O O-O 6. d4 d6 7. Nc3 Nc6 8. d5 Na5 9. Nd2 c5 10. Qc2 a6
1958 Riga ch-URS – Round 1 – Averbakh, Yuri L – 1/2-1/2 – Spassky, Boris Vasily – G3 1. c4 f5 2. d4 Nf6 3. g3 g6 4. Bg2 Bg7 5. Nc3 d6 6. Nf3 O-O 7. O-O Nc6 8. d5 Na5 9. Nd2 c5 10. Rb1 Bd7
1959 Argentina – Round 11 – Saadi, Julio – 1/2-1/2 – Pelikán, Jiří – G55 1. c4 f5 2. Nc3 Nf6 3. d4 g6 4. g3 Bg7 5. Bg2 Nc6 6. Nf3 O-O 7. O-O d6 8. d5 Na5 9. Nd2 c5 10. Qc2 a6
1960 Madrid zt – Round 11 – Reilly, Brian – 0-1 – Pietzsch, Wolfgang – G78 1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. c4 Bg7 5. Nc3 O-O 6. Nf3 d6 7. O-O Nc6 8. d5 Na5 9. Nd2 c5 10. Qc2 Rb8
1961 Marianske Lazne zt – Round 10 – Ljungquist, Lennart – 1/2-1/2 – Blom, Kaj – G66 1. c4 f5 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. O-O d6 6. d4 O-O 7. Nc3 Nc6 8. d5 Na5 9. Nd2 c5 10. Qc2 Rb8
1961 ROM Ch – Round 1 – Gheorghiu, Florin – 0-1 – Ghitescu, Theodor – G1 1. d4 f5 2. g3 Nf6 3. Bg2 d6 4. Nf3 g6 5. c4 Bg7 6. Nc3 O-O 7. O-O Nc6 8. d5 Na5 9. Nd2 c5 10. Qc2 e5
1962 Marianske Lazne – Round 4 – Sliwa, Bogdan – 1-0 – Ghitescu, Theodor – G25 1. c4 f5 2. d4 Nf6 3. g3 g6 4. Bg2 Bg7 5. Nc3 d6 6. Nf3 O-O 7. O-O Nc6 8. d5 Na5 9. Nd2 c5 10. b3 a6
1963 Capablanca Memorial – Round 10 – Bobotsov, Milko G – 1/2-1/2 – Cobo Arteaga, Eldis – G85 1. c4 f5 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. O-O O-O 6. d4 d6 7. Nc3 Nc6 8. d5 Na5 9. Nd2 c5 10. a3 b6
1964 Tel Aviv olm fin-B – Round 11 – Badilles, Glicerio – 1/2-1/2 – Cobo Arteaga, Eldis – G35 1. c4 g6 2. Nf3 Bg7 3. g3 f5 4. d4 Nf6 5. Nc3 O-O 6. Bg2 d6 7. O-O Nc6 8. d5 Na5 9. Nd2 c5 10. Qc2 a6
1965 Hoogovens – Round 9 – Lengyel, Laszlo – 1/2-1/2 – Johannessen, Simon T – G68 1. c4 f5 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. O-O O-O 6. d4 d6 7. Nc3 Nc6 8. d5 Na5 9. Nd2 c5 10. Qc2 Bd7
1965 Zinnowitz 02nd – Round 2 – Kozma, Julius – 1-0 – Ghitescu, Theodor – G5 1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nf3 Bg7 5. c4 d6 6. Nc3 O-O 7. O-O Nc6 8. d5 Na5 9. Nd2 c5 10. Qc2 e5
1966 La Habana olm fin-A – Round 9 – Palmason, Gudmundur – 0-1 – Ghitescu, Theodor – G159 1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nf3 Bg7 5. O-O O-O 6. c4 d6 7. Nc3 Nc6 8. d5 Na5 9. Nd2 c5 10. Qc2 e5
1969 Buesum – Round 8 – Mohrlok, Dieter – 1/2-1/2 – Ghitescu, Theodor – G33 1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nf3 Bg7 5. O-O O-O 6. c4 d6 7. Nc3 Nc6 8. d5 Na5 9. Nd2 c5 10. Qc2 e5
1969 Sweden – Round 1 – Ek, Hans – 0-1 – Skold, Kristian – G9 1. d4 f5 2. g3 Nf6 3. Bg2 d6 4. Nf3 g6 5. c4 Bg7 6. Nc3 O-O 7. O-O Nc6 8. d5 Na5 9. Nd2 c5 10. Qc2 e6
30. ECC Open 2014 – Round 1.1 – Korobov, Anton – 1-0 – Pettersson, Anders – G4 1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nf3 Bg7 5. O-O O-O 6. c4 d6 7. Nc3 Nc6 8. d5 Na5 9. Nd2 c5 10. a3 Bd7
73. Tata Steel GMA 2011 – Round 2 – Aronian, Levon – 1/2-1/2 – Nakamura, Hikaru – G7 1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nf3 Bg7 5. O-O O-O 6. c4 d6 7. Nc3 Nc6 8. d5 Na5 9. Nd2 c5 10. Rb1 e5
Manila Interzonal 1990 – Round 11 – Kamsky, Gata – 1/2-1/2 – Lin Hanyu, Tony – G187 1. Nf3 f5 2. c4 Nf6 3. g3 d6 4. d4 g6 5. Bg2 Bg7 6. Nc3 O-O 7. O-O Nc6 8. d5 Na5 9. Nd2 c5 10. dxc6 bxc6

A89g — Leningrad Main Line

1.d4 f5 2.c4 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3 O-O 6.O-O d6 7.Nc3 Nc6 8.d5 Na5 9.Nd2

Eval: [+0.62]

Les coups candidats

9…c5 — 97.1% (671 parties)

Ambassadeurs : Zeitlein, Michael (11x), Kaenel, Hansjuerg (8x), Bjelajac, Milan (6x), Kun, Gabor (6x), Ghitescu, Theodor (5x), Matulovic, Milan (5x), Golcman, Evgeny (5x), Vukic, Milan (4x)

9…b6 — 1.3% (9 parties)

Ambassadeurs : Muhtarov, Leonid (1x), Reitinger, Petr (1x), Bui Ha Duc (1x), Nguyen, Van Thanh (1x), Sperrer, Reinhard (1x), Topot, Iwan (1x), Barnes, Joel (1x), Bartron, Paul (1x)

9…Ng4 — 1.2% (8 parties)

Ambassadeurs : Backe, Peter (2x), Olsson, Krister (2x), Nei, Iivo (1x), Vaskans, Uldis (1x), Berglund, Per-Erik (1x), Breimar, Sven (1x), Gruskovnjak, Tomislav (1x), Olle, Peter (1x)

9…c6 — 0.1% (1 parties)

Ambassadeurs : Plantet, Sebastien (1x), Eichwald Herve (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9…c5	9…b6	9…Ng4	9…c6
<1800	5	80%	20%	—	—
1800-2200	179	96%	2%	2%	1%
2200-2600	379	99%	0%	1%	—
2600+	1	100%	—	—	—

Évolution par décennie (% des parties)

Décennie	N parties	9…c5	9…b6	9…Ng4	9…c6
1950s	7	100%	—	—	—
1960s	25	96%	—	4%	—
1970s	49	100%	—	—	—
1980s	58	100%	—	—	—
1990s	187	97%	1%	2%	1%
2000s	182	97%	2%	—	—
2010s	174	95%	2%	2%	—
2020s	9	100%	—	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9…c5	95%	100%	▲ +5.2%
9…b6	2%	0%	▼ -2.3%
9…Ng4	2%	0%	▼ -2.3%
9…c6	0%	0%	+0.0%

Joueurs célèbres

Champions du monde dans cette position

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

Parties historiques

9…c5 — 97.1% (671 parties)

1956 — Portisch, Lajos vs Haag, Ervin — 1/2-1/2 — Budapest HUN
1957 — Olafsson, Thorir vs Haag, Ervin — 1-0 — Reykjavik ISL
1958 — Averbakh, Yuri L vs Spassky, Boris Vasily — 1/2-1/2 — Riga ch-URS
1958 — Salov, Sergej vs Ivanov, Michail Petrovich — 1-0 — ?
1958 — Kluger, Gyula vs Haag, Ervin — 0-1 — HUN-ch Budapest HUN

9…b6 — 1.3% (9 parties)

1996 — Muhtarov, Leonid vs Reitinger, Petr — 1-0 — Decin CZE
2000 — Barnes, Joel vs Bartron, Paul — 1/2-1/2 — Seattle, WA USA
2003 — Bui Ha Duc vs Nguyen, Van Thanh — 1-0 — Can Tho
2003 — Sperrer, Reinhard vs Topot, Iwan — 1/2-1/2 — ?
2008 — Grishina, Irina vs Zarivkina, Victorya — 0-1 — Moscow RUS

9…Ng4 — 1.2% (8 parties)

1960 — Nei, Iivo vs Vaskans, Uldis — 1-0 — Riga LAT
1994 — Berglund, Per-Erik vs Breimar, Sven — 1-0 — ?
1995 — Backe, Peter vs Olsson, Krister — 1/2-1/2 — Ch Sweden (master's
1995 — Backe, Peter vs Olsson, Krister — 1/2-1/2 — Borlange SWE
2011 — Gruskovnjak, Tomislav vs Olle, Peter — 1-0 — HUN

9…c6 — 0.1% (1 parties)

1999 — Plantet, Sebastien vs Eichwald Herve — 1-0 — FRA chT youth

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