Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	● c3, ● c4	—
Pions isolés	● a2	—
Arriérés	—	—
Chaînes	● d2→c3, f2→g3, h2→g3	—
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	—	—
Cases faibles	—	—
Centre	● d5 (1v0)	—

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● b	—

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 2)
Bf1	● Bf1 Non développé (mob. 2)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	Non
Non développées	5 (● g1, ● c1, ● f1, ● a1, ● h1)	5 (● b8, ● g8, ● c8, ● 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, ● f2-f4	● …d7-d5

A21z — English: Kramnik-Shirov, 3.g3 Bxc3 4.bxc3

1.c4 e5 2.Nc3 Bb4 3.g3 Bxc3 4.bxc3 * ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Bg2 (Fianchetto, fou sur la grande diagonale — 95 % des parties) ; d4 (Occuper le centre — 1 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...d6 (Libérer Bc8 — 60 % des parties) ; ...Nc6 (Développer b8 — 18 % des parties) ; ...Nf6 (Développer g8 — 11 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
11. Norway Armageddon 2023 – Round 8.1 – Mamedyarov, Shakhriyar – 0-1 – Carlsen, Magnus – G23 1. c4 e5 2. Nc3 Bb4 3. g3 Bxc3 4. bxc3 d6 5. Bg2 Nc6 6. a4 Nge7 7. d3 Be6 8. a5 Qd7 9. f4 O-O 10. a6 b6
42. Olympiad 2016 – Round 4.15 – Solak, Dragan – 1-0 – Greet, Andrew N – G258 1. c4 e5 2. Nc3 Bb4 3. g3 Bxc3 4. bxc3 d6 5. Bg2 Ne7 6. d3 O-O 7. Nh3 c5 8. O-O Nbc6 9. f4 f5 10. Rb1 h6
Linares 1985 – Round 1 – Abad Rivas, Marta Lucia – 1-0 – Timman, Jan H – G2 1. c4 e5 2. Nc3 Bb4 3. g3 Bxc3 4. bxc3 Nc6 5. Bg2 Nge7 6. d3 d6 7. f4 Ng6 8. Nf3 exf4 9. Bxf4 Nxf4 10. gxf4 O-O
Smyslov Region Group Cup 2021 – Round 13.8 – Zvjaginsev, Vadim – 1-0 – Esipenko, Andrey – G140 1. c4 e5 2. Nc3 Bb4 3. g3 Bxc3 4. bxc3 d6 5. Bg2 f5 6. Rb1 Nc6 7. d3 Nf6 8. Bg5 O-O 9. Nf3 h6 10. Bxf6 Qxf6
Smyslov Region Group Cup 2021 – Round 4.3 – Zvjaginsev, Vadim – 1/2-1/2 – Matlakov, Maxim – G36 1. c4 e5 2. Nc3 Bb4 3. g3 Bxc3 4. bxc3 Nf6 5. Bg2 O-O 6. d3 c6 7. Bg5 h6 8. Bxf6 Qxf6 9. Nf3 d5 10. Nd2 Rd8
Superbet Blitz 2022 – Round 4.3 – Korobov, Anton – 0-1 – Caruana, Fabiano – G18 1. c4 e5 2. Nc3 Bb4 3. g3 Bxc3 4. bxc3 Nc6 5. Bg2 d6 6. d3 Nge7 7. e4 O-O 8. Nf3 f5 9. exf5 Bxf5 10. Ng5 h6
World Blitz 2018 – Round 17.15 – Firouzja, Alireza – 0-1 – Khusnutdinov, Rafael – G991 1. c4 e5 2. Nc3 Bb4 3. g3 Bxc3 4. bxc3 d6 5. Bg2 Nc6 6. d3 Nge7 7. Nf3 O-O 8. O-O h6 9. Nd2 Be6 10. Rb1 Rb8
World Rapid 2019 – Round 11.38 – Laznicka, Viktor – 1/2-1/2 – Bluebaum, Matthias – G716 1. c4 e5 2. Nc3 Bb4 3. g3 Bxc3 4. bxc3 d6 5. Bg2 f5 6. d3 Nf6 7. Nf3 Nc6 8. O-O O-O 9. Bg5 h6 10. Bxf6 Qxf6

A21z — Kramnik-Shirov (1985)

1.c4 e5 2.Nc3 Bb4 3.g3 Bxc3 4.bxc3

Les coups candidats

4…d6 — 60.5% (650 parties)

Ambassadeurs : Mainka, Romuald (8x), Psakhis, Lev (7x), Bukal, Vladimir Jr. (7x), Uhlmann, Wolfgang (5x), Gal, Jozsef Istvan (5x), Hodgson, Julian M (4x), Volosin, Vladimir (4x), Maroroa Jones, Gawain C B (4x)

4…Nc6 — 18.3% (197 parties)

Ambassadeurs : Babiy, Olga (4x), Van Mil, Johannes A J (3x), Danielyan, Vahe (3x), Gormally, Daniel W (3x), Stohl, Igor (2x), Uhlmann, Wolfgang (2x), Timman, Jan H (2x), Donner, Bernd (2x)

4…Nf6 — 11.0% (118 parties)

Ambassadeurs : Gavrikov, Viktor (3x), Kishnev, Sergey (3x), Fuksik, Jakub (3x), Kannenberg, Karl-Heinz (2x), Uhlmann, Wolfgang (2x), Wagner, Mario (2x), Oratovsky, Michael (2x), Mack, Andrew L (1x)

4…f5 — 3.8% (41 parties)

Ambassadeurs : Scholz, Herbert, Dr. (2x), Fernandez Romero, Ernesto (2x), Velikov, Petar (1x), Plaskett, H James (1x), Uhlmann, Wolfgang (1x), Barbero, Gerardo Fabián (1x), Kaliksteyn, Alexander (1x), Paschall, William (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	4…d6	4…Nc6	4…Nf6	4…f5
<1800	70	56%	20%	14%	3%
1800-2200	397	59%	19%	12%	5%
2200-2600	486	64%	18%	9%	3%
2600+	19	68%	11%	11%	11%

Évolution par décennie (% des parties)

Décennie	N parties	4…d6	4…Nc6	4…Nf6	4…f5
1950s	1	—	—	100%	—
1980s	57	60%	18%	9%	4%
1990s	239	56%	18%	10%	4%
2000s	241	61%	17%	10%	6%
2010s	338	57%	20%	14%	4%
2020s	198	70%	20%	7%	1%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
4…d6	57%	70%	▲ +12.8%
4…Nc6	20%	20%	+0.2%
4…Nf6	14%	7%	▼ -7.9%
4…f5	4%	1%	▼ -3.6%

Joueurs célèbres

Champions du monde dans cette position

Carlsen, Magnus — 1 partie
Ju, Wenjun — 1 partie

Parties historiques

4…d6 — 60.5% (650 parties)

1983 — Uhlmann, Wolfgang vs Razuvaev, Yuri S — 0-1 — Leipzig GER
1984 — Van Durme vs Plewe, Till — 0-1 — Brussels BEL
1984 — Shamkovich, Leonid vs Psakhis, Lev — 0-1 — Troon
1985 — Farinas Lucas, Juan Antonio vs Olascoaga Sempere, Miguel — 0-1 — cr.
1985 — Uhlmann, Wolfgang vs Stohl, Igor — 1/2-1/2 — Potsdam GER

4…Nc6 — 18.3% (197 parties)

1985 — Uhlmann, Wolfgang vs Stohl, Igor — 1-0 — Stary Smokovec SVK
1985 — Speelman, Jon S vs Timman, Jan H — 0-1 — Taxco izt
1985 — Uhlmann, Wolfgang vs Groszpeter, Attila — 1/2-1/2 — Budapest HUN
1985 — Rivas Pastor, Manuel vs Timman, Jan H — 1-0 — Linares
1986 — Osnos, Viatcheslav vs Efimov, Igor — 1-0 — Sevastopol UKR

4…Nf6 — 11.0% (118 parties)

1959 — Mack, Andrew L vs Mowery — 0-1 — ?
1982 — Gorelov, Sergey G vs Chekhov, Valery A — 1/2-1/2 — Telavi
1987 — Rukavina, Josip vs Kishnev, Sergey — 1-0 — Sibenik
1988 — Kerpf, Bernhard vs Kannenberg, Karl-Heinz — 1/2-1/2 — BL2-S8788 GER
1988 — Uhlmann, Wolfgang vs Gavrikov, Viktor — 0-1 — Debrecen HUN

4…f5 — 3.8% (41 parties)

1984 — Velikov, Petar vs Plaskett, H James — 1/2-1/2 — Plovdiv BUL
1986 — Uhlmann, Wolfgang vs Barbero, Gerardo Fabián — 1-0 — Plovdiv Plovdiv BUL
1992 — Nedela, Vlastimil vs Jusic, Zdenko — 1-0 — Stockerau
1993 — Kaliksteyn, Alexander vs Paschall, William — 1-0 — New York, NY USA
1994 — Szafraniec, Tadeusz vs Blehm, Pawel — 0-1 — Bytom POL