Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	—
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	—	—
Cases faibles	—	—
Centre	● d4 (1v0), ● e5 (1v0)	● d5 (1v0), ● e4 (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 (● 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

A05a — Reti: 1…Nf6

1.Nf3 Nf6 * ○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. c4 (Frapper le centre adverse — 50 % des parties) ; g3 (Préparer le fianchetto — 34 % des parties) ; d4 (Occuper le centre — 10 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...g6 (Préparer le fianchetto — 42 % des parties) ; ...e6 (Solidifier le centre, libérer le fou — 19 % des parties) ; ...d5 (Occuper le centre — 12 % des parties) ; ...c5 (Frapper le centre adverse — 12 % des parties) ; ...b6 (Préparer le fianchetto — 8 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1924 WECU Major Open 2nd – Round 3 – Spencer, Edmund – 0-1 – Znosko-Borovsky, Eugene – G3 1. Nf3 Nf6 2. c3 b6 3. d3 Bb7 4. e4 d6 5. Nbd2 Nbd7 6. Be2 g6 7. h3 Bg7 8. Nh2 O-O 9. Ndf3 c5 10. c4 Ne8
1924 WECU Major Open 2nd – Round 5 – Spencer, Edmund – 1-0 – Thomas, George Alan – G5 1. Nf3 Nf6 2. c3 g6 3. d3 Bg7 4. e4 d6 5. h3 e5 6. Be3 Nbd7 7. Qc1 h6 8. Be2 Nf8 9. Nbd2 Ne6 10. d4 Nd7
1924 WECU Major Open 2nd – Round 7 – Spencer, Edmund – 1-0 – Blake, Joseph – G9 1. Nf3 Nf6 2. c3 d5 3. d3 c5 4. Nbd2 Nc6 5. e4 e6 6. Be2 Bd6 7. O-O Qc7 8. Re1 O-O 9. Bf1 Re8 10. h3 b6
1952 Helsinki olm – Round 1 – Salo, Tapio – 0-1 – Pilnik, Herman – G5 1. Nf3 Nf6 2. c3 d5 3. g3 Nc6 4. d4 Bf5 5. Bg2 e6 6. Nbd2 h6 7. Qa4 Qd7 8. O-O Be7 9. Ne1 O-O 10. Nd3 e5
1958 HUN Ch Budapest HUN – Round 10 – Barcza, Gedeon – 1/2-1/2 – Bilek, Istvan – G50 1. Nf3 Nf6 2. d3 c5 3. c3 g6 4. Bg5 Bg7 5. Nbd2 d6 6. e4 Nc6 7. Be2 O-O 8. O-O h6 9. Bxf6 Bxf6 10. Ne1 Bg7
1959 HUN Ch 15th – Round 10 – Barcza, Gedeon – 1/2-1/2 – Pogats, Jozsef Jr. – G33 1. Nf3 Nf6 2. c3 d5 3. d3 Nc6 4. Nbd2 e5 5. e4 Be7 6. Be2 O-O 7. O-O Re8 8. Qc2 a5 9. Re1 Bf8 10. Nf1 h6
1964 Belgrade – Round 6 – Flesch, János – 1/2-1/2 – Bronstein, David I – G48 1. Nf3 Nf6 2. d3 d6 3. g3 g6 4. Bg2 Bg7 5. e4 c5 6. O-O Nc6 7. Nbd2 O-O 8. Nc4 d5 9. exd5 Nxd5 10. c3 Rb8
World Blitz 2017 – Round 9.48 – Dzhumagaliev, Yan – 1-0 – Ganguly, Surya Shekhar – G487 1. Nf3 Nf6 2. h4 d5 3. h5 Bg4 4. h6 gxh6 5. Ne5 Bf5 6. d4 h5 7. c4 Nbd7 8. Nc3 c6 9. Bf4 e6 10. Qb3 Qb6

A05a — Zukertort Opening (1924)

1.Nf3 Nf6

Les coups candidats

2.c4 — 48.6% (177499 parties) →

Ambassadeurs : Andersson, Ulf (496x), Vaganian, Rafael A (371x), Ribli, Zoltan (332x), Wojtkiewicz, Aleksander (277x), Konopka, Michal (267x), Romanishin, Oleg M (267x), Espig, Lutz (245x), Karpov, Anatoly (234x)

2.g3 — 31.2% (113817 parties) →

Ambassadeurs : Gutman, Lev (481x), Loginov, Valery A (217x), Kirov, Nino (186x), Bak, Istvan (154x), Anay Barche (144x), Pirc, Vasja (96x), Forintos, Gyozo V (83x), Keene, Raymond D (77x)

2.d4 — 13.1% (47647 parties) →

Ambassadeurs : Aalders, Peter (103x), Kurajica, Bojan (96x), Kund, Wolfgang (95x), Bernal Varela, Nelson (94x), Paredes, Carlos (61x), Katajainen, Kimmo (58x), Repka, Christopher (57x), Trifunovic, Petar (53x)

2.b3 — 4.9% (18023 parties) →

Ambassadeurs : B, Owen (149x), Taimanov, Mark (120x), Tolonen, Leo (110x), Blatny, Pavel (84x), Habibi, Ali (74x), Aalders, Peter (37x), Lange, Klaus (37x), Franzen, Jozef (35x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	2.c4	2.g3	2.d4	2.b3
<1800	18069	34%	35%	20%	7%
1800-2200	132111	43%	32%	16%	6%
2200-2600	171071	57%	29%	9%	4%
2600+	7366	69%	24%	4%	2%

Évolution par décennie (% des parties)

Décennie	N parties	2.c4	2.g3	2.d4	2.b3
1950s	3169	33%	48%	12%	6%
1960s	3935	33%	52%	10%	4%
1970s	9687	50%	36%	7%	5%
1980s	20200	55%	28%	11%	4%
1990s	57196	47%	33%	13%	5%
2000s	89898	50%	28%	15%	5%
2010s	132591	50%	30%	14%	4%
2020s	48186	44%	36%	10%	8%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
2.c4	50%	44%	▼ -5.5%
2.g3	30%	36%	▲ +5.4%
2.d4	14%	10%	▼ -3.7%
2.b3	4%	8%	▲ +3.2%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 10 parties
Smyslov, Vladimir — 10 parties
Botvinnik, Mikhail — 10 parties
Karpov, Anatoly — 10 parties
Kasparov, Garry — 10 parties
Anand, Viswanathan — 10 parties
Kramnik, Vladimir — 10 parties
Carlsen, Magnus — 10 parties
Ding, Liren — 10 parties
Ju, Wenjun — 10 parties
Hou, Yifan — 10 parties
Gukesh D — 10 parties
Karpov, Aleksandr — 1 partie

Parties historiques

2.c4 — 48.6% (177499 parties)

1950 — Troeger, Paul vs Rellstab, Ludwig — 1-0 — Bad Pyrmont GER
1950 — Schmidt, Wlodzimierz vs O'Kelly de Galway, Alberic — 1-0 — Saarbruecken
1950 — Stahlberg, Gideon vs Keres, Paul — 0-1 — Budapest HUN
1950 — Gideon, Stahlberg hlberg vs Keres, Paul Petrovich — 0-1 — Candidates Tournament, Budape
1950 — Letelier Martner, Rene vs Devos, Paul — 1/2-1/2 — Dubrovnik CRO

2.g3 — 31.2% (113817 parties)

1950 — Cortlever, Nico vs Rabar, Bakhtyar Hamasaleh — 1/2-1/2 — Dubrovnik olm
1950 — Ojanen, Kaarle S vs Rossolimo, Nicolas — 1-0 — Dubrovnik olm
1950 — Leepin, Peter vs Grob, Henry — 0-1 — Lucerne SUI
1950 — Eken, Max vs Gudmundsson, Gudbjartur — 1/2-1/2 — Amsterdam NED
1950 — Aditya Balu Jadhav vs Saemisch, Friedrich — 1-0 — Travemuende

2.d4 — 13.1% (47647 parties)

1950 — Eliskases, Erich vs Amaro, Lucas Ibrair — 1/2-1/2 — Mar del Plata ARG
1950 — Hunte, Hugo vs Elstner, Rudolf — 0-1 — Soemmerda GER
1950 — Engalicew, Nicola vs Giustolisi, Alberto — 1/2-1/2 — Sorrento ch ITA
1950 — Eliskases, Erich vs De Freitas, Manuela Schmitz — 1-0 — Mar del Plata ARG
1950 — Leonov, Mikhail A vs Tal, Mikhail — 0-1 — Ch Latvia (juniors)

2.b3 — 4.9% (18023 parties)

1950 — Al Husari, Zita Fatima vs Anay Barche — 0-1 — It, Schiavno Zdroj POL
1950 — Huguet, Robert vs Evrard, Henri — 0-1 — ?
1950 — Huguet, Robert vs Zielinski, Marek — 1-0 — cr ch FRA
1950 — Puc, Stojan vs Fuderer, Andrija — 1/2-1/2 — It, Bled SLO
1950 — Puc, Stojan vs Pilnik, Herman — 1/2-1/2 — Bled SLO