A43s — Old Benoni: Schmidt, 3.Nf3 Nf6

1.d4 c5 2.d5 d6 3.Nf3 Nf6 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte g5, paire de fous.
Faiblesses adverses : Bc8 enfermé, Bf8 enfermé, roi noir au centre.
Problèmes : roi au centre, Bc1 enfermé, Bf1 enfermé, 5 pièces non développées (B1, C1, F1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● e4 — Centre d4+e4, menace e5, libère Bf1
● Nbd2 — Développer Nb1
● Bg5 — Clouer Nf6
● h3 — Empêcher ...Bg4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte g4, paire de fous.
Faiblesses adverses : Bc1 enfermé, Bf1 enfermé, roi blanc au centre.
Problèmes : roi au centre, Bc8 enfermé, Bf8 enfermé, 5 pièces non développées (B8, C8, F8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...Nbd7 — Développer Nb8
● ...Bg4 — Développer Bc8, clouer Nf3
● ...Bb4 — Développer Bf8
● ...c4 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

A43s — Schmidt

1.d4 c5 2.d5 d6 3.Nf3 Nf6

Eval: [+0.63]

Les coups candidats

4.Nc3 — 53.6% (1646 parties)

Ambassadeurs : Hebden, Mark L (13x), Bellon Lopez, Juan Manuel (12x), Rakhmangulova, Anastasiya (11x), Izeta Txabarri, Felix (8x), Szmetan, Jorge (8x), Kasparov, Sergey (7x), Calzetta Ruiz, Monica (6x), Vozovic, Oksana (6x)

4.c4 — 41.1% (1261 parties)

Ambassadeurs : Boronyak, Arpad (6x), Eperjesi, Laszlo Dr. (6x), Bellon Lopez, Juan Manuel (6x), Segal, Alexandru Sorin (5x), ? (5x), Wichmann, Cliff (4x), Kuijf, Hans (3x), Meinsohn, Francis (3x)

4.g3 — 3.4% (105 parties)

Ambassadeurs : Guimard, Carlos E (3x), Rossetto, Hector (2x), Gruenenwald, Evi (2x), Kashlinskaya, Alina (2x), Rabinovich, Ilya Mar (1x), Veresov, Gavriil (1x), Schlage, Willi (1x), Roedl, Ludwig (1x)

4.Bg5 — 1.1% (35 parties)

Ambassadeurs : Moller, Allan (1x), Hansen, Soren Bech (1x), Herrmann, Andreas (1x), Wollmann, Andreas (1x), Gravgaard Joergen (1x), Pommerel Brouwer, H (1x), Torosian, Artak (1x), Latinov, Georgi (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	4.Nc3	4.c4	4.g3	4.Bg5
<1800	98	34%	56%	2%	4%
1800-2200	1203	45%	49%	4%	1%
2200-2600	1316	67%	30%	2%	1%
2600+	16	81%	19%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	4.Nc3	4.c4	4.g3	4.Bg5
1900s	1	100%	—	—	—
1910s	3	33%	67%	—	—
1920s	17	53%	47%	—	—
1930s	8	—	75%	25%	—
1940s	3	67%	33%	—	—
1950s	18	39%	33%	28%	—
1960s	20	45%	45%	10%	—
1970s	38	50%	37%	13%	—
1980s	198	62%	34%	2%	1%
1990s	641	53%	41%	3%	2%
2000s	992	54%	41%	3%	1%
2010s	990	53%	42%	3%	1%
2020s	142	56%	42%	1%	1%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
4.Nc3	53%	56%	▲ +3.1%
4.c4	42%	42%	+0.4%
4.g3	3%	1%	▼ -2.6%
4.Bg5	1%	1%	-0.4%

Joueurs célèbres

Champions du monde dans cette position

Kasparov, Garry — 3 parties
Carlsen, Magnus — 2 parties
Euwe, Max — 1 partie
Alekhine, Alexander — 1 partie
Smyslov, Vladimir — 1 partie

Parties historiques

4.Nc3 — 53.6% (1646 parties)

1909 — Holmes, Harry vs Blackburne, Joseph — 0-1 — Scarborough ENG
1918 — Rubinstein, Akiba vs Tarrasch, Siegbert — 1-0 — Berlin GER
1920 — Gruenfeld, Leo vs Von Balla, Zoltan — 1-0 — Wenen
1921 — Rubinstein, Akiba vs Spielmann, Rudolf — 1-0 — Triberg GER
1922 — Maier, Georg vs Spielmann, Rudolf — 0-1 — Munich GER

4.c4 — 41.1% (1261 parties)

1913 — Capablanca, Jose vs Mieses, Jacques — 1-0 — Berlin GER
1918 — Vidmar, Marjeta vs Mieses, Jacques — 1/2-1/2 — Berlin GER
1921 — Siegheim, Bruno vs Thomas, George Alan — 1-0 — Malvern College
1921 — Prokes, Ladislav vs Prochazka, Hubert — 1-0 — Brno Morava
1921 — Kostic, Barbara vs Maroczy, Geza — 1/2-1/2 — The Hague NED

4.g3 — 3.4% (105 parties)

1932 — Schlage, Willi vs Roedl, Ludwig — 0-1 — Swinemuende GER
1934 — Rabinovich, Ilya Mar vs Veresov, Gavriil — 1-0 — Leningrad ch-URS
1952 — Sopkov vs Kopilov, Nikolay Georgiyevich — 0-1 — Leningrad RUS
1953 — Raizman, Maurice vs Molnar, Francois — 1-0 — Paris FRA
1955 — Guimard, Carlos E vs Rossetto, Hector — 1/2-1/2 — Buenos Aires ARG

4.Bg5 — 1.1% (35 parties)

1983 — Moller, Allan vs Hansen, Soren Bech — 0-1 — Copenhagen DEN
1988 — Herrmann, Andreas vs Wollmann, Andreas — 1-0 — RLN/S
1991 — Torosian, Artak vs Latinov, Georgi — 0-1 — Teteven op
1991 — Del Rey, Diego vs Scarella, Enrique Manuel — 0-1 — Buenos Aires FMDA Jr A
1992 — Gravgaard Joergen vs Pommerel Brouwer, H — 0-1 — CIF-CP2-92-0036B

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● d6→c5, e7→d6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● g5 (2v0)	● g4 (2v0)
Cases faibles	—	—
Centre	● d4 (2v1)	● e4 (1v0)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bf1	● Bf1 Non développé (mob. 0)
Bc8		● Bc8 Non développé (mob. 5)
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	fermé
Ruptures	● c2-c3, ● e2-e3	● …c5-c4, ● …e7-e6, ● …e7-e5

Partie
1921 Brno Morava – Round 8 – Prokes, Ladislav – 1-0 – Prochazka, Hubert – G17 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. c4 e5 5. Nc3 e4 6. Ng5 Bf5 7. Qc2 Qe7 8. f3 Qd7 9. Ngxe4 Be7 10. e3 g5
1921 The Hague – Round 7 – Kostic, Barbara – 1/2-1/2 – Maroczy, Geza – G30 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. c4 e5 5. dxe6 Bxe6 6. Nc3 d5 7. cxd5 Nxd5 8. e4 Nxc3 9. Qxd8+ Kxd8 10. bxc3 f6
1922 Bad Pistyan – Round 3 – Bogoljubow, Efim – 1-0 – Hromadka, Karel – G22 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. c4 e5 5. Nc3 Bf5 6. g3 h6 7. Bg2 g5 8. Nd2 Bg7 9. e4 Bd7 10. Nf1 Na6
1922 Bad Pistyan – Round 6 – Gruenfeld, Ernst – 0-1 – Spielmann, Rudolf – G40 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. Nc3 Bf5 5. Nd2 g5 6. e4 Bg6 7. Be2 Bg7 8. O-O Nbd7 9. Re1 O-O 10. Bf1 Ne5
1922 Vienna – Round 1 – Kmoch, Hans – 0-1 – Spielmann, Rudolf – G33 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. Nc3 Bf5 5. g3 h6 6. Bg2 g5 7. h4 g4 8. Nd2 Nbd7 9. e4 Bg6 10. Nc4 Bg7
1922 Weston – Round 3 – Tregaskis, G. – 0-1 – Thomas, George Alan – G6 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. c4 e5 5. dxe6 Bxe6 6. Nc3 Nc6 7. e4 Be7 8. Be2 O-O 9. O-O Qb6 10. Nd5 Qd8
1923 Scheveningen – Round 7 – Euwe, Max – 0-1 – Mieses, Jacques – G68 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. Nc3 g6 5. g3 Bf5 6. Bg2 Na6 7. O-O Qd7 8. Re1 Ne4 9. Nb1 Bh3 10. Bh1 Bg7
1923 Vienna – Round 5 – Becker Griesbeck, Achille – 1/2-1/2 – Tartakower, Savielly – G22 1. d4 c5 2. d5 d6 3. e4 e5 4. g3 Be7 5. Bg2 f5 6. Nc3 Nf6 7. Nge2 O-O 8. O-O fxe4 9. Nxe4 Nxe4 10. Bxe4 Bf5
1924 Gyor – Round 1 – Vukovic, Vladimir – 1/2-1/2 – Balogh, Janos – G20 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. c4 e5 5. dxe6 Bxe6 6. Nc3 Bxc4 7. Qa4+ b5 8. Nxb5 Bxb5 9. Qxb5+ Qd7 10. Qxd7+ Nbxd7
1930 Kautsky mem7 – Round 13 – Flohr, Salo – 1-0 – Richter, Emil – G14 1. d4 c5 2. d5 d6 3. e4 e5 4. dxe6 fxe6 5. Nc3 Nc6 6. Nf3 Be7 7. Bc4 a6 8. a4 Nf6 9. O-O O-O 10. Re1 Ne8
1932 Swinemunde – Round 1 – Schlage, Willi – 0-1 – Roedl, Ludwig – G1 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. g3 b5 5. Bg2 Bb7 6. c4 Nbd7 7. a4 bxc4 8. Nc3 g6 9. O-O Bg7 10. a5 O-O
1933 Trebitsch Memorial 16th – Round 14 – Palda, Karl – 0-1 – Spielmann, Rudolf – G63 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. c4 Bf5 5. Nc3 h6 6. Nd2 g5 7. e4 Bg6 8. Qb3 Qc8 9. f3 Bg7 10. Bd3 Nbd7
1934 Leningrad ch-URS – Round 1 – Rabinovich, Ilya Mar – 1-0 – Veresov, Gavriil – G91 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. g3 Bf5 5. Bg2 Qd7 6. h3 h6 7. Nfd2 g5 8. e4 Bg6 9. O-O Bg7 10. Nc3 Na6
1935 Tatatovaros it – Round 9 – Sacconi, Antonio – 1/2-1/2 – Kluger, Gyula – G10 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. c4 Bf5 5. Nc3 g6 6. Nd2 g5 7. e4 Bg6 8. Bd3 Nbd7 9. O-O a6 10. b3 Bg7
1947 Chigorin Memorial – Round 1 – Kottnauer, Cenek – 1/2-1/2 – Kholmov, Ratmir D – G39 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. Nc3 g6 5. Bf4 Bg7 6. e4 O-O 7. Be2 b5 8. Bxb5 Nxe4 9. Nxe4 Qa5+ 10. Bd2 Qxb5
1953 Paris – Round 8 – Raizman, Maurice – 1-0 – Molnar, Francois – G21 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. g3 g6 5. Bg2 Bg7 6. O-O O-O 7. c4 Na6 8. Nc3 Nc7 9. h3 a6 10. a4 Rb8
1954 Gorki ch22-SU sf – Round 1 – Bondarevsky, Igor – 1/2-1/2 – Gusev, Nikolay N – G11 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. Nc3 g6 5. g3 Bg7 6. Bg2 O-O 7. O-O Bd7 8. a4 Qc8 9. Nd2 Bh3 10. Nc4 Na6
1954 Gorki ch22-SU sf – Round 1 – Khasin, Abram – 1/2-1/2 – Vladimirov, Boris T – G9 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. Nc3 Qa5 5. Bd2 b5 6. a3 a6 7. e4 Qc7 8. Bg5 Nbd7 9. Nd2 g6 10. Be2 Bg7
1955 Argentina – Round 17 – Guimard, Carlos E – 1/2-1/2 – Rossetto, Hector – G122 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. g3 e5 5. dxe6 Bxe6 6. Bg2 Nc6 7. Ng5 Bg4 8. Nc3 h6 9. Nge4 Nxe4 10. Nxe4 d5
1958 AUS Ch – Round 2.9 – Kondra, Boris – 0-1 – Crowl, Frank Arthur – G12 1. d4 c5 2. d5 d6 3. c4 e5 4. Nc3 f5 5. e4 Nf6 6. Bd3 f4 7. Qe2 Na6 8. Bd2 Bg4 9. f3 Bd7 10. g4 Be7
1959 Boehlen U20 – Round 4 – Kuettner, Uwe – 1-0 – Neukirch, Detlef – G6 1. d4 c5 2. d5 d6 3. c4 g6 4. Nc3 Bg7 5. e4 e5 6. Be2 Nf6 7. Nf3 O-O 8. O-O Nh5 9. Ne1 Nf4 10. Nd3 Nxd3
1959 Buenos Aires JM – Round 1 – Guimard, Carlos E – 1/2-1/2 – Rossetto, Hector – G8 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. g3 b5 5. Bg2 Bb7 6. c4 bxc4 7. Nc3 Nbd7 8. O-O g6 9. Ng5 Bg7 10. f4 O-O
1959 Buenos Aires JM – Round 1 – Sanguinetti, Raul – 1/2-1/2 – Guimard, Carlos E – G7 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. g3 b5 5. Bg2 Bb7 6. c4 bxc4 7. Nc3 Nbd7 8. O-O g6 9. Nd2 Nb6 10. e4 Bg7
1959 Lodz ch POL – Round 7 – Gawlikowski, Stanislaw – 1-0 – Szpakowski, Marek – G34 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. c4 g6 5. b3 Bg7 6. Bb2 O-O 7. g3 b5 8. Nbd2 Qa5 9. Bg2 bxc4 10. bxc4 Ba6
1965 It – Round 2 – Flesch, Janos – 0-1 – ? – G3 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. c4 e6 5. dxe6 Bxe6 6. Nc3 Nc6 7. Nd5 Bxd5 8. cxd5 Nb4 9. e4 Qa5 10. Nd2 Be7
1965 It Zinnowitz GER – Round 2 – Lein, Anatoly – 1-0 – Bednarski, Jacek B – G4 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. Nc3 e5 5. e4 g6 6. Be2 Bg7 7. O-O O-O 8. a3 Nbd7 9. b4 a6 10. Nd2 Qc7
1966 Aarhus – Round 1 – Brinck-Claussen, Bjorn – 1-0 – Petersen, Finn – G3 1. d4 c5 2. d5 d6 3. c4 g6 4. Nc3 Bg7 5. e4 e5 6. Be2 Nh6 7. h4 f5 8. Bg5 Qb6 9. Rb1 Nf7 10. Bd2 h6
40. Olympiad Open 2012 – Round 4.17 – Salgado Lopez, Ivan – 1-0 – Faraj, Yahya – G238 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. c4 e5 5. dxe6 Bxe6 6. Nc3 Be7 7. e4 O-O 8. Be2 Nc6 9. O-O Re8 10. Re1 Ng4
SportAccord Rapid Men 2013 – Round 7.6 – Kamsky, Gata – 0-1 – Ponomariov, Ruslan – G54 1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. c4 b5 5. cxb5 a6 6. b6 Nbd7 7. Nc3 g6 8. e4 Bg7 9. Bd3 O-O 10. O-O Nxb6

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