Structure de pions
| ♔ Blancs | ♚ Noirs | |
| Pions doublés | — | — |
| Pions isolés | — | — |
| Arriérés | — | — |
| Chaînes | ● f2→g3, h2→g3 | ● b6→c5, a7→b6 |
| Passés | — | — |
| Majorité | — | — |
Cases
| ♔ Blancs | ♚ Noirs | |
| Cases fortes | — | — |
| Cases faibles | — | — |
| Centre | ● e5 (1v0) | ● e4 (1v0) |
Colonnes et diagonales
| ♔ Blancs | ♚ Noirs |
Pièces
| ♔ Blancs | ♚ Noirs | |
| Bc1 | ● Bc1 Non développé (mob. 0) | |
| Bg2 | ● Bg2 Ok (mob. 2) | |
| Bb7 | ● Bb7 Actif (mob. 6) | |
| Bf8 | ● Bf8 Non développé (mob. 0) | |
| Paire de fous | ● Oui | ● Oui |
| Non développées | 4 (● b1, ● c1, ● a1, ● h1) | 5 (● b8, ● g8, ● 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 |
A30b — English: Symmetrical, 2.Nf3 b6 3.g3 Bb7 4.Bg2
1.c4 c5 2.Nf3 b6 3.g3 Bb7 4.Bg2 * ● 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 — 68 % des parties) ; Nc3 (Développer b1 — 22 % des parties) ; d4 (Occuper le centre — 7 % des parties).
♚ Point de vue Noirs
1
2
3
4
5
6
7
8
hgfedcba
Plans. ...Nf6 (Développer g8 — 59 % des parties) ; ...g6 (Préparer le fianchetto — 37 % des parties).
Avantages
Faiblesses
Diagonale active
Plans
| Partie |
|---|
| 1968 Hungary – Round 1 – Vadasz, Laszlo – 1-0 – Pogats, Jozsef Jr. – G143 1. Nf3 c5 2. g3 b6 3. c4 Bb7 4. Bg2 g6 5. O-O Bg7 6. Nc3 Nc6 7. e3 Nf6 8. d4 d6 9. d5 Ne5 10. Nxe5 dxe5 |
| World Blitz 2016 – Round 11.28 – Lalit Babu M R – 1/2-1/2 – Pantsulaia, Levan – G442 1. Nf3 c5 2. c4 b6 3. g3 Bb7 4. Bg2 g6 5. O-O Bg7 6. Nc3 Nc6 7. e3 Nh6 8. d4 cxd4 9. Nxd4 O-O 10. Nxc6 dxc6 |
| World Blitz 2018 – Round 12.44 – Timofeev, Artyom – 1/2-1/2 – Salgado Lopez, Ivan – G725 1. c4 c5 2. Nf3 b6 3. g3 Bb7 4. Bg2 g6 5. O-O Bg7 6. Nc3 Nc6 7. e3 Nf6 8. d4 O-O 9. b3 cxd4 10. Nxd4 Qc8 |
| World Blitz 2022 – Round 19.19 – Svane, Rasmus – 1/2-1/2 – Pantsulaia, Levan – G1002 1. Nf3 c5 2. c4 b6 3. g3 Bb7 4. Bg2 g6 5. O-O Bg7 6. Nc3 Nc6 7. e3 Nh6 8. b3 O-O 9. Bb2 Nf5 10. Qb1 e6 |
| World Cup 1991 – Round 7 – Andersson, Ulf 1949 – 1/2-1/2 – Portisch, Lajos – G54 1. Nf3 c5 2. c4 b6 3. g3 Bb7 4. Bg2 g6 5. d4 cxd4 6. Qxd4 Nf6 7. Nc3 Bg7 8. O-O d6 9. b3 Nbd7 10. Bb2 Rc8 |
Hou, Yifan — 1 partie
1969 — Toran Albero, Roman vs Bellon Lopez, Juan Manuel — 1/2-1/2 — Olot
1971 — Harry Setiawan vs Maloney, Pat — 1-0 — Portland, OR USA
1975 — Jacobsen, Bo vs Kolbak, Jens — 1-0 — Solskinsturneringen, Aarhus
1975 — Pinto Paiva, Jose vs Abarno, Rodolfo — 0-1 — Caxias do Sul BRA
1970 — Toran Albero, Roman vs Bellon Lopez, Juan Manuel — 1/2-1/2 — Malaga ESP
1970 — Fanjul Garcia-San Miguel, Jose Luis vs Bellon Lopez, Juan Manuel — 0-1 — Aviles ESP
1972 — Rukavina, Josip vs Planinec, Albin — 1/2-1/2 — Umag CRO
1974 — Langeweg, Kick vs Bellon Lopez, Juan Manuel — 1/2-1/2 — Torremolinos ESP
1982 — Vogel, Jaap vs Sjoberg, Mats — 1-0 — Gausdal Jubilee
1982 — Stigar, Petter vs Sjoberg, Mats — 1-0 — Gausdal Jubilee
1985 — Tichy, Vladimir vs Meduna, Eduard — 1/2-1/2 — Prague CZE
1987 — Muresan, Marian-Gabriel vs Costa, J Juan Lima Da — 0-1 — Biel SUI
1994 — Niewerth, Stephan vs Rempe, Lasse — 1-0 — Altenholz
1996 — Bachmayer, Josef vs Sackl, Ernst — 1/2-1/2 — Feldbach open
1996 — Szith, Gregor vs Sackl, Ernst — 1-0 — Feldbach open
1998 — Bibikoff, Michel vs Alexieva, Silvia — 0-1 — France