Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● c2→d3, h2→g3, d3→e4, g3→f4	● d6→c5, f7→e6, f7→g6, h7→g6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● g5 (2v1)	● b4 (2v0), ● d4 (3v1)
Cases faibles	—	—
Centre	● d5 (2v1), ● e4 (2v0)	● d4 (3v1), ● e5 (3v2)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 2)
Bg2	● Bg2 Ok (mob. 2)
Bg7		● Bg7 Actif (mob. 6)
Bc8		● Bc8 Non développé (mob. 1)
Paire de fous	● Oui	● Oui
Non développées	3 (● c1, ● a1, ● h1)	4 (● g8, ● c8, ● a8, ● h8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Au centre	● Au centre
Droits de roque	O-O / O-O-O	O-O / O-O-O

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	mobile
Ruptures	● d3-d4, ● e4-e5, ● f4-f5	● …c5-c4, ● …d6-d5, ● …e6-e5, ● …f7-f5

B25m — Sicilian: Closed, 6.f4 e6

1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.f4 e6 7.Nf3 * ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. O-O (Mettre le roi en sécurité, connecter les tours — 92 % des parties) ; Be3 (Fou actif (mobilité 6), Développer c1 — 6 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Nge7 (Développer g8 — 99 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

└── B25n - 7…Nge7 - Closed (1964) [-0.36] · 106 parties

├── B25o - 8.O-O - Closed (1950) [-0.34] · 103 parties

│ ├── B25p - 8…O-O - Closed (1935) [-0.41] · 90 parties

│ │ ├── B25q - 9.Be3 - Closed (1962) [-0.39] · 50 parties

│ │ │ ├── B25t - 9…Nd4 - Closed (1963) [-0.31] · 42 parties

│ │ │ │ ├── B25v - 10.Qd2 - Closed (1953) [-0.22] · 19 parties

│ │ │ │ ├── B25t - 10.* - Closed · 16 parties

│ │ │ │ ├── B25u - 10.Rb1 - Closed (1956) [-0.42] · 6 parties

│ │ │ │ └── B25w - 10.e5 - Closed [-0.39] · 1 partie

│ │ │ │ └── B25x - 10…Nef5 - Closed (1961) [-0.35] · 1 partie

│ │ │ ├── B25r - 9…Rb8 - Closed (1951) [-0.34] · 4 parties

│ │ │ ├── B25s - 9…b6 - Closed (1968) [-0.17] · 3 parties

│ │ │ └── B25q - 9…* - Closed · 1 partie

│ │ └── B25p - 9.* - Closed · 40 parties

│ └── B25o - 8…* - Closed · 13 parties

└── B25n - 8.* - Closed · 3 parties

Les parties, variante par variante

1106 partiesB25n - 7…Nge7 - Closed (1964)

B25m — Closed

1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.f4 e6 7.Nf3

Les coups candidats

7…Nge7 — 98.2% (10036 parties) →

Ambassadeurs : Starostits, Ilmars (91x), Rogulj, Branko (48x), Bohak, Janko (43x), Bastian, Herbert (32x), Larino Nieto, David (28x), Barkwell, Michael C (25x), ? (25x), Detela, Walter (24x)

7…Rb8 — 0.6% (64 parties)

Ambassadeurs : Mazzotti, Carlo (1x), Capuano, Ruggiero (1x), Segundo da Costa, Pedro (1x), Chemin, Vitorio (1x), Lorenz, Robin (1x), Schmid, Haiko (1x), Seret, Jean-Luc (1x), Maxwell, Alistair (1x)

7…Nf6 — 0.3% (33 parties)

Ambassadeurs : Roos, Daniel (1x), Persson, Mats Ove (1x), Brodie, Hugh (1x), Rohland, Michael Karl (1x), Bussacchini, Michel (1x), Guerra, Caesar (1x), Magyar, Peter (1x), Gibson, Kris (1x)

7…Nd4 — 0.3% (27 parties)

Ambassadeurs : Brynell, Stellan (1x), Larsen, Steen Skovlund (1x), Dannehr, Juergen (1x), Reich, Alfred1 (1x), Ismagilova, G (1x), Akperova, Alexandra (1x), Jukna, Romualdas (1x), Sutkus, Vytautas (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7…Nge7	7…Rb8	7…Nf6	7…Nd4
<1800	603	96%	1%	1%	0%
1800-2200	4853	98%	1%	0%	0%
2200-2600	3243	99%	0%	0%	0%
2600+	16	100%	—	—	—

Évolution par décennie (% des parties)

Décennie	N parties	7…Nge7	7…Rb8	7…Nf6	7…Nd4
1950s	15	100%	—	—	—
1960s	142	99%	—	—	—
1970s	313	98%	1%	1%	0%
1980s	736	99%	0%	—	0%
1990s	2583	98%	0%	0%	0%
2000s	3567	98%	1%	0%	0%
2010s	2355	98%	1%	0%	0%
2020s	514	98%	2%	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7…Nge7	98%	98%	-0.0%
7…Rb8	1%	2%	▲ +1.5%
7…Nf6	0%	0%	-0.3%
7…Nd4	0%	0%	-0.3%

Joueurs célèbres

Champions du monde dans cette position

Karpov, Anatoly — 6 parties
Kramnik, Vladimir — 2 parties
Anand, Viswanathan — 1 partie

Parties historiques

7…Nge7 — 98.2% (10036 parties)

1950 — Henneberger, Walter vs Leepin, Peter — 0-1 — Lucerne SUI
1950 — Henneberger, Walter vs Mueller, Philip — 1/2-1/2 — Lucerne SUI
1951 — Neikirkh, Oleg vs Ciejka, Tadeusz — 0-1 — Sopot
1954 — Seidman, Herbert vs Burger, PJ — 1-0 — New York ch-USA
1954 — Kakabadze, Eliso vs Alfeev, Dmitry — 1-0 — Riga LAT

7…Rb8 — 0.6% (64 parties)

1974 — Barbeau, Robert vs Reeve, Jeff — 0-1 — Vancouver BC CAN
1976 — Segundo da Costa, Pedro vs Chemin, Vitorio — 0-1 — Joao Pessoa
1981 — Seret, Jean-Luc vs Maxwell, Alistair — 0-1 — Val Thorens FRA
1988 — Mazzotti, Carlo vs Capuano, Ruggiero — 0-1 — Caorle ITA
1988 — Lorenz, Robin vs Schmid, Haiko — 0-1 — GER

7…Nf6 — 0.3% (33 parties)

1974 — Roos, Daniel vs Persson, Mats Ove — 0-1 — Hamburg GER
1975 — Brodie, Hugh vs Rohland, Michael Karl — 1-0 — Toronto Open
1990 — Rodriguez Perez, Miguel Angel vs Alonso de Dompablo, Pablo — 1-0 — Valladolid
1990 — Koskela, Niina vs Aviles, Eduardo — 1-0 — Novi Sad SRB
1992 — Baron, Juliana vs Regnet, Claudia — 1-0 — Worms

7…Nd4 — 0.3% (27 parties)

1970 — Dannehr, Juergen vs Reich, Alfred1 — 0-1 — Uelzen
1982 — Brynell, Stellan vs Larsen, Steen Skovlund — 1/2-1/2 — Soro
1991 — Precechtel, Pavel vs Sluka, Radek — 0-1 — Valtice ch-Moravia jr
1993 — Hoose, Hannelore vs Zdebik, Barbara — 1/2-1/2 — GER
1994 — Botschek, Martin vs Ruzele, Darius — 0-1 — Muenster GER