Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	● c3, ● c4	—
Pions isolés	● a3	—
Arriérés	—	—
Chaînes	● f2→e3, c3→d4, e3→d4	● d6→c5, f7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● f4 (2v0)	—
Cases faibles	—	—
Centre	● d4 (3v2)	● d5 (2v1), ● e5 (2v1)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● b	—

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 2)
Bd3	● Bd3 Actif (mob. 6)
Bc8		● Bc8 Non développé (mob. 1)
Paire de fous	● Oui	Non
Non développées	3 (● c1, ● a1, ● h1)	2 (● c8, ● a8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Au centre !	● Roqué
Droits de roque	O-O / O-O-O	—

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	mobile
Ruptures	● d4-d5	● …d6-d5, ● …e6-e5

E29e — Nimzo-Indian: Saemisch, 5…O-O 6.e3 c5 7.Bd3 Nc6 8.Ne2 d6

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 O-O 6.e3 c5 7.Bd3 Nc6 8.Ne2 d6 * ○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Mettre le roi à l'abri (O-O dans 58 % des parties).

Atouts. Les Blancs s'appuient sur un contrôle dominant de f4, un fou actif en d3, la paire de fous et la colonne semi-ouverte b.

En contrepartie. Le roi n'est pas encore à l'abri, plusieurs pièces dorment encore (le fou c1 et les tours a1 et h1) et le pion isolé a3.

Plans. O-O (Mettre le roi en sécurité, connecter les tours — 58 % des parties) ; e4 (Occuper le centre — 36 % des parties) ; Ng3 (5 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

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Plan principal. Attaque sur le roi adverse resté au centre.

Côté adverse. Le pion isolé a3, un mauvais fou en c1 et le roi resté au centre.

En contrepartie. Plusieurs pièces dorment encore (le fou c8 et la tour a8).

Plans. ...e5 (Occuper le centre — 57 % des parties) ; ...b6 (Préparer le fianchetto — 20 % des parties) ; ...Ne8 (16 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1938 AVRO – Round 1 – Botvinnik, Mikhail – 1/2-1/2 – Keres, Paul Petrovich – G4 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 O-O 7. Bd3 Nc6 8. Ne2 d6 9. Ng3 b6 10. Bb2 Ba6
1940 Moskou ch-URS – Round 1 – Bondarevsky, Igor – 1-0 – Botvinnik, Mikhail – G28 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 O-O 7. Bd3 Nc6 8. Ne2 d6 9. e4 e5 10. d5 Na5
1941 GER Ch 8th – Round 1 – Nuernberg, Friedrich – 0-1 – Mueller, Hans – G2 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 Nc6 7. Bd3 d6 8. Ne2 O-O 9. O-O b6 10. f4 Ba6
1942 Kuibyshev – Round 6 – Mikenas, Vladas – 1-0 – Vulfson, Vladimir – G28 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 O-O 7. Bd3 Nc6 8. Ne2 d6 9. O-O e5 10. e4 h6
1946 Mar del Plata – Round 9 – Stahlberg, Gideon – 1/2-1/2 – Bolbochan, J. – G85 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 O-O 7. Bd3 Nc6 8. Ne2 d6 9. e4 e5 10. d5 Ne7
1946 Moscow – Round 1 – Denker, Arnold S – 0-1 – Smyslov, Vladimir – G11 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. a3 Bxc3+ 7. bxc3 Nc6 8. Ne2 d6 9. O-O e5 10. e4 Re8
1946 URS-USA – Round 2 – Denker, Arnold S – 0-1 – Smyslov, Vasily – G9 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. a3 Bxc3+ 7. bxc3 Nc6 8. Ne2 d6 9. O-O e5 10. e4 Re8
1948 It (Men) Mar Del Plata ARG – Round 1 – Castillo Larenas, Mariano – 1/2-1/2 – Luckis, Marcos – G1 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Ne2 Nc6 7. a3 Bxc3+ 8. bxc3 d6 9. e4 e5 10. d5 Na5
1949 BRA Ch – Round ? – Cruz, Walter – 1-0 – Oliveira Washington – G12 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. a3 Bxc3+ 7. bxc3 d6 8. Ne2 O-O 9. e4 Ne8 10. Be3 b6
1949 BRA Ch – Round ? – De Freitas, Marcio Elisio – 1-0 – Oliveira Washington – G11 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. a3 Bxc3+ 7. bxc3 O-O 8. Ne2 d6 9. O-O b6 10. Ng3 Na5
1949 Bucharest – Round ? – Pachman, Ludek – 1/2-1/2 – Jenei, Ferenc – G10 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. a3 Bxc3+ 7. bxc3 Nc6 8. Ne2 d6 9. O-O b6 10. e4 Ne8
1949 Bucharest – Round ? – Sajtar, Jaroslav – 0-1 – Balogh, Janos – G11 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. a3 Bxc3+ 7. bxc3 Nc6 8. Ne2 d6 9. e4 Qc7 10. f4 b6
1949 Venice – Round 1 – Rossolimo, Nicolas – 1-0 – Golombek, Harry – G4 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. a3 Bxc3+ 6. bxc3 O-O 7. Bd3 d6 8. Ne2 Nc6 9. O-O e5 10. e4 Nh5
1949 Zagreb – Round 1 – Gligorić, Svetozar – 1-0 – Lokvenc, Josef – G2 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. a3 Bxc3+ 6. bxc3 c5 7. Bd3 Nc6 8. Ne2 d6 9. O-O b6 10. e4 Ba6
1950 Amsterdam – Round 1 – Stahlberg, Gideon – 1/2-1/2 – Reshevsky, Samuel – G18 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 O-O 7. Bd3 Nc6 8. Ne2 d6 9. e4 Ne8 10. O-O b6
1950 Amsterdam ch-NED – Round 1 – Spanjaard, Eduard – 0-1 – Van den Berg, Cees – G12 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 Nc6 7. Bd3 d6 8. Ne2 O-O 9. e4 Ne8 10. e5 dxe5
1950 Candidats Tournament – Round 5 – Bronstein, David I – 1-0 – Najdorf, Miguel – G19 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 Nc6 7. Bd3 O-O 8. Ne2 d6 9. e4 Ne8 10. O-O b6
1950 Mar del Plata – Round 9 – Marini, Luis – 1/2-1/2 – Castillo Bermudez, Manuel – G73 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. a3 Bxc3+ 7. bxc3 d6 8. Ne2 O-O 9. O-O b6 10. e4 Ne8
1951 DDR Ch – Round 14 – Mueller, Claus – 1-0 – Schlieder, Rolf – G33 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. a3 Bxc3+ 6. bxc3 O-O 7. Bd3 Nc6 8. Ne2 d6 9. O-O b6 10. Ng3 Ba6
1951 Hungary Ch – Round 1 – Koberl, Ferenc – 1-0 – Kapu, Jeno – G37 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. a3 Bxc3+ 6. bxc3 c5 7. Bd3 d6 8. Ne2 Nc6 9. O-O e5 10. f3 b6
1951 It I Beverwijk NED – Round 7 – Donner, Jan-Hein – 1-0 – Poulsen, Christian – G8 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 O-O 7. Bd3 Nc6 8. Ne2 d6 9. e4 e5 10. O-O Re8
1951 Madrid ESP – Round 15 – Steiner, Herman – 1-0 – Tramoyeres P – G33 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 O-O 7. Bd3 Nc6 8. Ne2 d6 9. O-O e5 10. d5 Na5
1951 Mar del Plata zt – Round 6 – Rossetto, Hector – 1-0 – Vasconcellos, Fernando O – G51 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 O-O 7. Bd3 d6 8. Ne2 Nc6 9. Ng3 Kh8 10. O-O Ne7
1951 Staunton Memorial – Round 13 – Stahlberg, Gideon – 1-0 – Broadbent, Reginald – G92 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. a3 Bxc3+ 7. bxc3 Nc6 8. Ne2 d6 9. e4 e5 10. d5 Ne7
1952 Helsinki olm – Round 1 – Primavera, Giuseppe – 0-1 – Larocca Muller, Paolo – G70 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. a3 Bxc3+ 6. bxc3 O-O 7. Bd3 d6 8. Ne2 Nc6 9. O-O Ne8 10. e4 b6
1952 Miedzyzdroje – Round 2 – Balanel, Ion – 1-0 – Szabo, Stefan – G8 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 O-O 7. Bd3 d6 8. Ne2 Nc6 9. O-O e5 10. e4 Bg4
1953 POL-ch11 – Round 10 – Ziembinski, Marian – 1/2-1/2 – Brzozka, Stefan – G60 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 Nc6 7. Bd3 O-O 8. Ne2 d6 9. O-O b6 10. Ng3 Ba6
1954 Mar del Plata – Round 7 – Estrada Degrandi, Walter – 0-1 – Shocron, Ruben – G58 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. a3 Bxc3+ 7. bxc3 Nc6 8. Ne2 d6 9. e4 Ne8 10. Be3 Qe7
1955 Manhattan CC Ch 5556 – Round 7 – Pinkus, Albert – 1-0 – Klugman, Reuben – G30 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. a3 Bxc3+ 6. bxc3 O-O 7. Bd3 Nc6 8. Ne2 d6 9. O-O b6 10. e4 Ne8
1955 RUS Ch – Round ? – Vladimirov, Yevgeniy – 1/2-1/2 – Zurakhov, Vladlen Y – G4 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 Nc6 7. Bd3 O-O 8. Ne2 d6 9. e4 Ne8 10. O-O b6
1956 Mar del Plata ARG – Round 4 – Rossetto, Hector – 1-0 – Toth, Vaclav – G5 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 Nc6 7. Bd3 d6 8. Ne2 O-O 9. O-O Ne8 10. f4 f5
1957 USA Ch Open 58th – Round 4 – Byrne, Robert E – 1/2-1/2 – Ramirez, Gilbert – G25 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 O-O 7. Bd3 Nc6 8. Ne2 d6 9. e4 Ne8 10. O-O b6
1961 Reggio Emilia ITA – Round 11 – Haag, Ervin – 1/2-1/2 – Romani, Elio – G20 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 O-O 7. Bd3 Nc6 8. Ne2 d6 9. e4 Ne8 10. O-O b6
1964 Tel Aviv olm fin-A – Round 5 – Pachman, Ludek – 1-0 – Porath, Yosef – G101 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. a3 Bxc3+ 6. bxc3 O-O 7. Bd3 Nc6 8. Ne2 d6 9. e4 Ne8 10. Be3 f5
1965 San Juan US Open – Round 11 – Colon Cortegoso, Marta – 1-0 – Zalys, Ignas – G10 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 d6 7. Bd3 Nc6 8. Ne2 O-O 9. O-O e5 10. f3 Ne8
1967 DSV-Turnier – Round 7 – Calero Nino, Camilo – 0-1 – Schoeneberg, Manfred – G41 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 O-O 7. Bd3 Nc6 8. Ne2 d6 9. e4 e5 10. O-O Ne8
1968 Bristol ch-BCF – Round 8 – Littlewood, Norman – 1-0 – Hilton, CG. – G84 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 O-O 7. Bd3 Nc6 8. Ne2 d6 9. e4 e5 10. d5 Na5
1969 New Zealand Ch – Round 1 – Sarapu, Ortvin – 1-0 – Feneridis, A. – G2 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. a3 Bxc3+ 7. bxc3 d6 8. Ne2 Nc6 9. O-O e5 10. e4 Nh5
1969 WchT U26 fin-B 16th – Round 8.4 – Toth, Bela – 1-0 – Balaskas, Panayotis – G50 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 O-O 7. Bd3 Nc6 8. Ne2 d6 9. e4 e5 10. d5 Ne7

E29e — Saemisch (1938)

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 O-O 6.e3 c5 7.Bd3 Nc6 8.Ne2 d6

Les coups candidats

9.O-O — 60.9% (268 parties)

Ambassadeurs : Balanel, Ion (2x), Brzozka, Stefan (2x), Blocker, Calvin (2x), Grela, Kacper (2x), Ghitescu, Theodor (1x), Black, Colin (1x), Zalys, Ignas (1x), Steiner, Herman (1x)

9.e4 — 32.5% (143 parties)

Ambassadeurs : Stahlberg, Gideon (2x), Haag, Ervin (1x), Romani, Elio (1x), Vladimirov, Yevgeniy (1x), Zurakhov, Vladlen Y (1x), Pafnutiff, Vladimir (1x), Blackstone, John (1x), Rapaka Samuel Paul (1x)

9.Ng3 — 4.5% (20 parties)

Ambassadeurs : Rossetto, Hector (2x), Vasconcellos, Fernando O (2x), Pedersen, Nicolai Vesterbaek (2x), Jose, Ribeiro (1x), Belem Luciano (1x), Aleman Munoz Jorge Luis (1x), Gonzalez, Juan Carlos (1x), Mensch, Etienne (1x)

9.Qc2 — 0.9% (4 parties)

Ambassadeurs : Clement, Charles (1x), Righi, Ezio (1x), Pletinka, Sergei (1x), Ermolov, Vasily (1x), Benson, Oisin P. (1x), O`Donnell, Conor (1x), Pigeat, Alexandre (1x), Noboa Silva, Kevin (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9.O-O	9.e4	9.Ng3	9.Qc2
<1800	24	75%	25%	—	—
1800-2200	168	69%	24%	4%	2%
2200-2600	153	56%	37%	6%	1%
2600+	3	—	100%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	9.O-O	9.e4	9.Ng3	9.Qc2
1950s	31	48%	39%	13%	—
1960s	14	50%	50%	—	—
1970s	13	46%	54%	—	—
1980s	43	60%	40%	—	—
1990s	86	62%	31%	5%	1%
2000s	87	63%	26%	8%	—
2010s	104	69%	27%	1%	3%
2020s	62	55%	35%	6%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9.O-O	69%	55%	▼ -14.4%
9.e4	27%	35%	▲ +8.6%
9.Ng3	1%	6%	▲ +5.5%
9.Qc2	3%	0%	▼ -2.9%

Parties historiques

9.O-O — 60.9% (268 parties)

1950 — Spiller, Arthur R vs Wachs, Otto Rauber — 1-0 — Los Angeles, CA USA
1950 — Acoltzi Ruiz, Mariana vs Castillo Bermudez, Manuel — 1/2-1/2 — Mar del Plata ARG
1951 — Steiner, Herman vs Tramoyeres, Ramon — 1-0 — Madrid ESP
1951 — Mueller, Claus vs Schlieder, Rolf — 1-0 — Schwerin GER
1951 — Koberl, Ferenc vs Kapu, Jeno — 1-0 — Hungary ch

9.e4 — 32.5% (143 parties)

1950 — Stahlberg, Gideon vs Rapaka Samuel Paul — 1/2-1/2 — Amsterdam NED
1950 — Spanjaard, Eduard vs Van den Berg, Carel B — 0-1 — Amsterdam ch-NED
1950 — Bronstein, David I vs Miguel, Nahuel — 1-0 — Budapest HUN
1950 — Wood, Beau vs Parr, Frank — 0-1 — England
1951 — Donner, Jan-Hein vs Poulsen, Christian — 1-0 — It I Beverwijk NED

9.Ng3 — 4.5% (20 parties)

1951 — Rossetto, Hector vs Vasconcellos, Fernando O — 1-0 — Mar del Plata zt Mar
1951 — Jose, Ribeiro vs Belem Luciano — 1-0 — ?
1951 — Rossetto, Hector vs Vasconcellos, Fernando O — 1-0 — Mar del Plata ARG
1952 — Aleman Munoz Jorge Luis vs Gonzalez, Juan Carlos — 0-1 — Havana CUB
1993 — Knudsen, John C vs Elburg, John — 1/2-1/2 — WCCF, CS-8 corr

9.Qc2 — 0.9% (4 parties)

1990 — Clement, Charles vs Righi, Ezio — 0-1 — Novi Sad olm
2012 — Benson, Oisin P. vs O`Donnell, Conor — 0-1 — Bunratty IRL
2014 — Pletinka, Sergei vs Ermolov, Vasily — 1/2-1/2 — Lazarevskoe
2018 — Pigeat, Alexandre vs Noboa Silva, Kevin — 1-0 — Manavgat TUR

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