Structure de pions
| ♔ Blancs | ♚ Noirs | |
| Pions doublés | — | — |
| Pions isolés | — | — |
| Arriérés | — | — |
| Chaînes | — | — |
| Passés | — | — |
| Majorité | — | — |
Cases
| ♔ Blancs | ♚ Noirs | |
| Cases fortes | ● b5 (2v0), ● d5 (2v1) | — |
| Cases faibles | — | — |
| Centre | ● d5 (2v1) | ● d4 (1v0) |
Colonnes et diagonales
| ♔ Blancs | ♚ Noirs |
Pièces
| ♔ Blancs | ♚ Noirs | |
| Bc1 | ● Bc1 Non développé (mob. 0) | |
| 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 (● g1, ● 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 | ● d2-d4 | ● …d7-d5 |
A34d — English: Symmetrical, 2…Nf6
1.c4 c5 2.Nc3 Nf6 * ○ Trait aux Blancs
Ouverture — Centre mobile
♔ Point de vue Blancs
8
7
6
5
4
3
2
1
abcdefgh
Plans. g3 (Préparer le fianchetto — 51 % des parties) ; Nf3 (Développer g1 — 43 % des parties) ; e4 (Occuper le centre — 5 % des parties).
♚ Point de vue Noirs
1
2
3
4
5
6
7
8
hgfedcba
Plans. ...d5 (Occuper le centre — 30 % des parties) ; ...e6 (Solidifier le centre, libérer le fou — 27 % des parties) ; ...Nc6 (Développer b8 — 20 % des parties) ; ...g6 (Préparer le fianchetto — 18 % des parties).
Avantages
Faiblesses
Diagonale active
Plans
├── A34i - 3.Nf3 - English Opening: Symmetrical Variation, Three Knights Variation [+0.26] · 335 parties
│ ├── A34n - 3…d5 - Symmetrical, 3 Knights (1927) [+0.20] · 285 parties
│ │ ├── A34q - 4.cxd5 Nxd5 - Exchange (1927) [+0.31] · 283 parties
│ │ │ ├── A34q - 5.* - Symmetrical, 3 Knights, Exchange · 81 parties
│ │ │ ├── A34t - 5.e4 - Symmetrical, 3 Knights (1937) [+0.24] · 65 parties
│ │ │ │ ├── A34w - 5…Nb4 - Symmetrical, 3 Knights (1928) [+0.26] · 50 parties
│ │ │ │ │ └── A34w - 6.* - Symmetrical, 3 Knights · 2 parties
│ │ │ │ ├── A34x - 5…Nxc3 - Symmetrical, 3 Knights (1933) [+0.60] · 10 parties
│ │ │ │ │ └── A34x - 6.* - Symmetrical, 3 Knights · 5 parties
│ │ │ │ └── A34t - 5…* - Symmetrical, 3 Knights · 5 parties
│ │ │ └── A34u - 5.d4 - Symmetrical, 3 Knights (1953) [+0.29] · 40 parties
│ │ │ └── A34u - 5…* - Symmetrical, 3 Knights · 1 partie
│ │ └── A34n - 4.* - Symmetrical, 3 Knights · 2 parties
├── A34h - 3.g3 - Symmetrical (1925) [+0.17] · 207 parties
│ ├── A34j - 3…d5 - Symmetrical (1956) [+0.26] · 128 parties
│ │ ├── A34r - 4.cxd5 Nxd5 5.Bg2 - Symmetrical (1932) [+0.14] · 126 parties
│ │ │ └── A34r - 5…* - Symmetrical · 15 parties
│ │ └── A34j - 4.* - Symmetrical · 2 parties
│ └── A34h - 3…* - Symmetrical · 79 parties
└── A34d - 3.* - Symmetrical · 23 parties
Karpov, Anatoly — 10 parties
Kasparov, Garry — 10 parties
Carlsen, Magnus — 10 parties
Botvinnik, Mikhail — 7 parties
Kramnik, Vladimir — 7 parties
Ju, Wenjun — 7 parties
Ding, Liren — 3 parties
Gukesh D — 2 parties
Hou, Yifan — 1 partie
1950 — Richter, Emil vs Kozma, Edmund — 1/2-1/2 — Zlin ch CZE
1950 — Hain, Willi vs Christoph, Manfred, Dr. — 0-1 — Detmold
1951 — Stoltz, Gösta vs Balanel, Ion — 1-0 — Marianske Lazne zt
1951 — Stoltz, Gosta vs Heidenfeld, Wolfgang — 1-0 — Marianske Lazne/Prah
1950 — GIDEON SUNDAY vs Szabo, Laszlo — 1/2-1/2 — Budapest HUN
1950 — Sarosy, Zoltan L vs K, Samuel Jeba — 1-0 — Toronto CAN
1950 — Kottnauer, Cenek vs Troianescu, Octav — 0-1 — Schiavno Zdroj
1951 — Florian, Tibor vs Stein, Georg — 1/2-1/2 — Bucharest ROU
1951 — Niephaus, Walter vs Teschner, Rudolf — 1-0 — Augsburg GER
1951 — Avery, Peter vs Sarosy, Zoltan L — 1-0 — Toronto CAN
1953 — Huebener, Joachim U G vs Duenhaupt, Heinz-Wilhelm Dr — 1/2-1/2 — corr ch3-BdF
1955 — Gniot, Tadeusz vs Gawliczek, Andreas — 1-0 — Poland ch13
1961 — Johannessen, Svein vs Filip, Miroslav — 1/2-1/2 — Marianske Lazne zt
1961 — Nei, Iivo vs Klaman, Konstantin Mikhailovich — 1-0 — Riga LAT
1962 — Ryum Garber, David vs Sloan, Sam — 0-1 — South East Pennsylvania Open;
1963 — Hantke, Rolf vs Oestreich, Reinhard — 1-0 — Buende