Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● c2→d3, d3→e4	—
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● g5 (2v0)	● b4 (2v0), ● d4 (2v1)
Cases faibles	—	—
Centre	—	● d4 (2v1)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bf1	● Bf1 Non développé (mob. 1)
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)	4 (● 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	● d3-d4	● …c5-c4, ● …d7-d5

B30c — Sicilian: 2…Nc6 3.d3

1.e4 c5 2.Nf3 Nc6 3.d3 * ○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. g3 (Préparer le fianchetto — 65 % des parties) ; Nbd2 (Développer b1 — 12 % des parties) ; c3 (Renforcer le centre — 6 % des parties) ; Be2 (Développer f1 — 6 % des parties) ; Nc3 (Développer b1 — 6 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...d5 (Occuper le centre — 45 % des parties) ; ...g6 (Préparer le fianchetto — 24 % des parties) ; ...d6 (Libérer Bc8 — 14 % des parties) ; ...e6 (Solidifier le centre, libérer le fou — 9 % des parties) ; ...e5 (Occuper le centre — 6 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1922 Vienna – Round 1 – Maroczy, Geza – 1-0 – Bogoljubow, Efim – G83 1. e4 Nf6 2. d3 c5 3. Nf3 Nc6 4. Nc3 d5 5. exd5 Nxd5 6. Be2 Nxc3 7. bxc3 g6 8. O-O Bg7 9. Bd2 O-O 10. Qc1 Re8
1952 Budapest – Round 12 – Petrosian, Tigran A. – 1/2-1/2 – Kottnauer, Cenek – G110 1. e4 c5 2. d3 Nc6 3. Nf3 Nf6 4. Nbd2 d5 5. g3 e6 6. Bg2 dxe4 7. dxe4 Be7 8. O-O O-O 9. c3 b6 10. Qe2 Bb7
1954 Kiev ch-URS – Round 1 – Nezhmetdinov, Rashid – 0-1 – Korchnoi, Viktor – G104 1. e4 c5 2. Nf3 Nc6 3. d3 Nf6 4. Nbd2 g6 5. g3 Bg7 6. Bg2 O-O 7. O-O d5 8. Re1 e6 9. c3 b6 10. e5 Nd7
1955 CAN Ch – Round 9 – Suk, Ivan – 1-0 – Fox, Maurice – G40 1. e4 c5 2. d3 Nc6 3. Nf3 Nf6 4. g3 d5 5. Nbd2 e5 6. Bg2 g6 7. O-O Bg7 8. exd5 Nxd5 9. Nc4 O-O 10. Re1 Re8
1959 Tbilisi ch-URS – Round 5 – Vasiukov, Evgeni – 1/2-1/2 – Korchnoi, Viktor – G37 1. e4 c5 2. Nf3 Nc6 3. d3 Nf6 4. g3 d5 5. Nbd2 g6 6. Bg2 Bg7 7. O-O O-O 8. Re1 e5 9. exd5 Nxd5 10. Nc4 f6
1961 WchT U26 08th – Round 10.1 – Stein, Leonid – 1-0 – Soby, Frode – G90 1. e4 c5 2. Nf3 Nf6 3. d3 Nc6 4. Nbd2 g6 5. g3 Bg7 6. Bg2 O-O 7. O-O d5 8. Re1 dxe4 9. dxe4 Ng4 10. h3 Nh6
1962 Hungary – Round 7 – Filep, Tibor – 1-0 – Liptay, Laszlo Dr. – G55 1. e4 c5 2. Nf3 Nf6 3. d3 Nc6 4. g3 d5 5. Nbd2 g6 6. Bg2 Bg7 7. O-O O-O 8. Re1 e6 9. c3 a5 10. Qc2 b6
1964 DEN Ch Holstebro – Round 10 – Norby, Peter H. – 0-1 – Holm, Sejer – G35 1. e4 c5 2. Nf3 Nf6 3. d3 Nc6 4. g3 g6 5. Bg2 Bg7 6. c3 O-O 7. O-O b6 8. Bg5 Bb7 9. Qd2 Qc7 10. Na3 Rad8
1964 Sarajevo 7th – Round 3 – Damjanovic, Mato – 1/2-1/2 – Kozomara, Vlado – G3 1. e4 c5 2. Nf3 Nf6 3. d3 Nc6 4. g3 d5 5. Nbd2 Bg4 6. h3 Bxf3 7. Qxf3 e6 8. Bg2 Be7 9. O-O O-O 10. exd5 Qxd5
1968 WchT U26 15th – Round 1 – Arnaudov, Petar – 1-0 – Moe, Mogens – G8 1. e4 c5 2. Nf3 Nf6 3. d3 Nc6 4. g3 d5 5. exd5 Nxd5 6. Bg2 Bg4 7. h3 Bh5 8. O-O e6 9. Nbd2 Be7 10. Nc4 Qc7
1969 Monte Carlo-B – Round 4 – Ciocaltea, Victor – 1-0 – Gerusel, Mathias – G20 1. e4 c5 2. Nf3 Nf6 3. d3 Nc6 4. g3 d5 5. Nbd2 e5 6. Bg2 d4 7. O-O Bd6 8. Nh4 g6 9. Nc4 Bc7 10. f4 exf4
1969 Rhyl ch-BCF – Round 7 – Oliff, Keith M – 1/2-1/2 – Lees, David – G55 1. e4 c5 2. Nf3 Nc6 3. d3 Nf6 4. Nbd2 d5 5. g3 Bg4 6. h3 Bxf3 7. Qxf3 g6 8. Bg2 Bg7 9. O-O O-O 10. exd5 Nd4

B30c — Sicilian (1922)

1.e4 c5 2.Nf3 Nc6 3.d3 Nf6

Les coups candidats

4.g3 — 65.4% (494 parties)

Ambassadeurs : Ciocaltea, Victor (4x), Gerusel, Mathias (4x), Pyrih, Roman (3x), Lutikov, Anatoly S (2x), Vasiukov, Evgeni (2x), Korchnoi, Viktor (2x), Flesch, János (2x), Smejkal, Jan (2x)

4.Nbd2 — 12.1% (91 parties)

Ambassadeurs : Alder, Bodo (2x), Petrosian, Tigran V. (1x), Kottnauer, Cenek (1x), Stein, Leonid (1x), Soby, Frode (1x), Blagojevic, Katarina (1x), Radikovska, Kristina (1x), Langeweg, Kick (1x)

4.c3 — 6.0% (45 parties)

Ambassadeurs : Chipalambwe Lloyd (1x), Kottnauer, Cenek (1x), Alder, Bodo (1x), Krasnici, Hasan (1x), Kemmler, Michael (1x), Davila, Oscar Alfredo (1x), Paragua, Mark (1x), Smerdon, David C (1x)

4.Be2 — 5.8% (44 parties)

Ambassadeurs : Lopez Gomez, Daniel (2x), Valmana Canto, Jaime (2x), Krizsan-Bilek, Gyulane (1x), Stadler, Tereza (1x), De Laporte, Karin (1x), Lauterbach, Ingrid (1x), Harandi, Khosro (1x), Peretz, Malkiel (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	4.g3	4.Nbd2	4.c3	4.Be2
<1800	69	58%	10%	4%	7%
1800-2200	304	72%	11%	5%	5%
2200-2600	225	70%	14%	8%	4%
2600+	1	—	100%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	4.g3	4.Nbd2	4.c3	4.Be2
1950s	7	71%	29%	—	—
1960s	28	71%	21%	4%	4%
1970s	21	90%	5%	—	5%
1980s	27	78%	7%	—	4%
1990s	138	62%	15%	10%	5%
2000s	232	62%	12%	5%	6%
2010s	220	63%	12%	6%	7%
2020s	82	73%	7%	5%	6%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
4.g3	63%	73%	▲ +10.0%
4.Nbd2	12%	7%	▼ -4.5%
4.c3	6%	5%	▼ -1.5%
4.Be2	7%	6%	▼ -0.7%

Parties historiques

4.g3 — 65.4% (494 parties)

1954 — Perez Alcocer, Jose vs Miguel, Nahuel — 0-1 — Mar del Plata ARG
1955 — Suk, Ivan vs Fox, Maurice — 1-0 — Ottawa CAN
1955 — Sudoplatov, Vladyslav vs Petrosian, Tigran A. — 1/2-1/2 — Moscow RUS
1958 — Milev, Zdravko vs Filchev, Rusko — 1-0 — Sofia BUL
1959 — Vasiukov, Evgeni vs Korchnoi, Viktor — 1/2-1/2 — Tbilisi ch-URS

4.Nbd2 — 12.1% (91 parties)

1952 — Petrosian, Tigran V. vs Kottnauer, Cenek — 1/2-1/2 — Budapest HUN
1954 — Nezhmetdinov, Rashid vs Korchnoi, Viktor — 0-1 — Kiev ch-URS
1961 — Stein, Leonid vs Soby, Frode — 1-0 — Helsinki FIN
1962 — Langeweg, Kick vs Myagmarsuren, Lkhamsuren — 1/2-1/2 — Marianske Lazne
1963 — Stanciu, Traian vs Partos, Charles — 1-0 — Bucharest ROU

4.c3 — 6.0% (45 parties)

1961 — Chipalambwe Lloyd vs Kottnauer, Cenek — 0-1 — London League
1991 — Hegeler, Anja vs Laqua, Christian — 1/2-1/2 — Hamburg GER
1993 — Farkas, Tibor vs Zak, Uriel — 1-0 — Bucharest ROU
1993 — Martin, William vs David, Robin — 0-1 — California
1995 — Cseh, Andor vs Mika, Janos — 1-0 — Vizugy-Szentendre

4.Be2 — 5.8% (44 parties)

1968 — Krizsan-Bilek, Gyulane vs Stadler, Tereza — 1-0 — Belgrade SRB
1977 — Harandi, Khosro vs Peretz, Malkiel — 0-1 — Netanya ISR
1984 — De Laporte, Karin vs Lauterbach, Ingrid — 0-1 — Marktredwitz
1991 — Levin Brian vs Lim Kam Cheen, P. — 0-1 — Mamaia
1992 — Sitdikov, Ramil G vs Ljashkov — 0-1 — ?