Structure de pions
| ♔ Blancs | ♚ Noirs | |
| Pions doublés | — | ● d4, ● d7 |
| Pions isolés | — | — |
| Arriérés | — | — |
| Chaînes | — | — |
| Passés | — | — |
| Majorité | ● aile dame 3v2 | — |
Cases
| ♔ Blancs | ♚ Noirs | |
| Cases fortes | ● g5 (2v0) | — |
| Cases faibles | — | — |
| Centre | ● d4 (2v0), ● e5 (1v0) | ● e4 (1v0) |
Colonnes et diagonales
| ♔ Blancs | ♚ Noirs | |
| Semi-ouvertes | ● d | ● c |
Pièces
| ♔ Blancs | ♚ Noirs | |
| Bc1 | ● Bc1 Non développé (mob. 5) | |
| Bf1 | ● Bf1 Non développé (mob. 0) | |
| Bc8 | ● Bc8 Non développé (mob. 0) | |
| Bf8 | ● Bf8 Non développé (mob. 0) | |
| Paire de fous | ● Oui | ● Oui |
| Non développées | 5 (● b1, ● c1, ● f1, ● a1, ● h1) | 5 (● b8, ● c8, ● f8, ● 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 | ● e2-e3 | ● …d4-d3, ● …d7-d5 |
A31d — English: Symmetrical, Two Knights
1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 * ○ Trait aux Blancs
Ouverture — Centre mobile
♔ Point de vue Blancs
8
7
6
5
4
3
2
1
abcdefgh
Plans. Nxd4 (Cavalier centralisé en d4 — 100 % des parties).
♚ Point de vue Noirs
1
2
3
4
5
6
7
8
hgfedcba
Plans. ...e6 (Solidifier le centre, libérer le fou — 34 % des parties) ; ...Nc6 (Développer b8 — 21 % des parties) ; ...e5 (Occuper le centre — 21 % des parties) ; ...b6 (Préparer le fianchetto — 10 % des parties) ; ...g6 (Préparer le fianchetto — 7 % des parties).
Avantages
Faiblesses
Diagonale active
Plans
└── A31g - 4.Nxd4 - Symmetrical, Two Knights (1929) [+0.12] · 204 parties
├── A31a - 4…Nc6 - Symmetrical, Two Knights (1936) [+0.29] · 92 parties
│ ├── A31m - 5.Nc3 - Symmetrical, Two Knights (1911) [+0.34] · 54 parties
│ │ ├── A31m - 5…* - Symmetrical, Two Knights · 37 parties
│ └── A31a - 5.* - Symmetrical, Two Knights · 38 parties
├── A31h - 4…b6 - Symmetrical, Two Knights (1928) [+0.42] · 34 parties
│ └── A31h - 5.* - Symmetrical, Two Knights · 7 parties
├── A31i - 4…g6 - Symmetrical, Two Knights (1947) [+0.34] · 29 parties
│ ├── A31k - 5.Nc3 - Symmetrical, Two Knights (1932) [+0.32] · 28 parties
│ │ ├── A31k - 5…* - Symmetrical, Two Knights · 20 parties
│ │ └── A31o - 5…Bg7 - Symmetrical, Two Knights (1927) [+0.69] · 8 parties
│ │ └── A31o - 6.* - Symmetrical, Two Knights · 1 partie
│ └── A31i - 5.* - Symmetrical, Two Knights · 1 partie
├── A31g - 4…* - Symmetrical, Two Knights · 28 parties
└── A31j - 4…e5 - Symmetrical, Two Knights (1955) [+0.35] · 21 parties
└── A31j - 5.* - Symmetrical, Two Knights · 7 parties
Les parties, variante par variante
1204 partiesA31g - 4.Nxd4 - Symmetrical, Two Knights (1929)
Fin du contenu
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Kasparov, Garry — 10 parties
Carlsen, Magnus — 8 parties
Kramnik, Vladimir — 6 parties
Karpov, Anatoly — 5 parties
Hou, Yifan — 5 parties
Ju, Wenjun — 5 parties
Smyslov, Vladimir — 2 parties
Anand, Viswanathan — 2 parties
Botvinnik, Mikhail — 1 partie
1950 — Hogenauer, N.J vs Muir, Walter G — 0-1 — Golden Knights 5051
1950 — Alatortsev, Vladimir N. vs Kopilov, Nikolay Georgiyevich — 1-0 — Leningrad RUS
1950 — Werner, Stephan vs Osterwald, Karl Heinz — 1-0 — ?
1951 — Muller, Hans vs Eugenio, Sarah De Oliveira — 1-0 — Venezia ITA-AUT
1976 — Herrera, Laura vs Hausner, Alfreda — 1/2-1/2 — Haifa ISR
1985 — Gouret, Thierry vs Conquest, Stuart C — 0-1 — Guernsey GCI
1988 — Bebaker Ely Cheikhe vs Correa, Aron Antunes — 0-1 — Thessaloniki GRE
1990 — Clever, Hans-Hermann vs Kopec, Mariusz — 0-1 — ?
1991 — Kota, Istvan vs Csoma, Robert — 1/2-1/2 — ?
1992 — Johansson, Jan vs Fant, Goran — 0-1 — Stockholm SWE
1996 — Baloutsou, Vasiliki vs Kondou, Eva — 0-1 — Volos
1997 — Garcia Garrido, Enric vs Narciso Dublan, Marc — 0-1 — La Pobla de Lillet
1994 — Van Zon, Tim vs Duijn, Rob — 0-1 — Haarlem NED
1999 — Coetzer, Lourens vs Michael, Thomas Cartmell — 0-1 — ?
2000 — Kuenzel, Ulrich vs Mackie, John J — 1/2-1/2 — ?
2004 — De Mayolas, Flavio vs Arias, Juan Carlos — 0-1 — Ushuaia