E27b — Nimzo-Indian: Saemisch, 5…O-O 6.f3

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 O-O 6.f3 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Exploiter la case forte b4.

Atouts. Les Blancs s'appuient sur la case forte b4, la paire de fous et la colonne semi-ouverte b.

Côté adverse. Le fou enfermé en c8.

En contrepartie. Le roi n'est pas encore à l'abri, plusieurs pièces dorment encore (le cavalier g1, les fous c1 et f1 et les tours a1 et h1) et le pion isolé a3.

Plans. e4 (Centre d4+e4, menace e5, libère Bf1) ; Bg5 (Clouer Nf6).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

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

Côté adverse. Le pion isolé a3, les fous enfermés en c1 et f1 et le roi resté au centre.

En contrepartie. Plusieurs pièces dorment encore (le cavalier b8, le fou c8 et la tour a8).

Plans. ...d6 (Libérer Bc8) ; ...Nc6 (Développer Nb8) ; ...c5 (Rupture) ; ...d5 (Rupture) ; ...e5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	● c3, ● c4	—
Pions isolés	● a3	—
Arriérés	—	—
Chaînes	● e2→f3, g2→f3, c3→d4	● d7→e6, f7→e6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b4 (2v0)	—
Cases faibles	—	—
Centre	● d4 (2v0), ● e5 (1v0)	● d5 (2v1)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● b	—

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 6)
Bf1	● Bf1 Non développé (mob. 0)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	Non
Non développées	5 (● g1, ● c1, ● f1, ● a1, ● h1)	3 (● b8, ● 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	semi-ouvert
Ruptures	● c4-c5, ● d4-d5, ● e2-e3, ● f3-f4	● …c7-c6, ● …c7-c5, ● …d7-d6, ● …d7-d5, ● …e6-e5

Partie
1935 Warsaw ol – Round 17 – Fine, Reuben – 1-0 – Porath, Yosef – G37 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 Nc6 7. e4 e5 8. Be3 Re8 9. d5 Na5 10. Bd3 b6
1949 Leningrad – Round 8 – Kuzminykh, Evgeny – 1-0 – Estrin, Yakov – G60 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 Re8 7. e4 d5 8. e5 Nfd7 9. cxd5 exd5 10. Ne2 c5
1950 Candidats Tournament – Round 1 – Bronstein, David I – 1-0 – Szabo, Laszlo – G3 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 Nh5 7. Nh3 f5 8. e4 c5 9. e5 Nc6 10. f4 g6
1950 Dubrovnik olm – Round 2 – Najdorf, Miguel – 1/2-1/2 – Beni, Alfred – G15 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 Ne8 7. e4 b6 8. Bd3 Ba6 9. Nh3 Nc6 10. e5 f6
1950 Schiavno Zdroj – Round 1 – Geller, Efim P – 0-1 – Pogats, Jozsef Jr. – G42 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 Nh5 7. Nh3 f5 8. e3 d6 9. Bd3 e5 10. O-O Nc6
1951 Hungary Ch – Round 1 – Koberl, Ferenc – 1-0 – Pogats, Jozsef Jr. – G35 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 Nh5 7. Nh3 f5 8. e3 d6 9. Bd3 e5 10. Nf2 Qe8
1951 Zonal Marianske Lazne (Czech R – Round 1 – Stoltz, Gabriel – 1/2-1/2 – Szabo, Ladislav – G3 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 Ne8 7. e4 b6 8. Bd3 Ba6 9. a4 Nc6 10. Ba3 d6
1954 New York ch-USA – Round 11 – Berliner, Hans – 1/2-1/2 – Bisguier, Arthur B – G43 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 Ne8 7. e4 b6 8. Bd3 Ba6 9. a4 Nc6 10. Ba3 d6
1961 Maroczy Memorial – Round 1 – Donner, Jan-Hein – 0-1 – Taimanov, Mark E – G15 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 Ne8 7. e4 b6 8. a4 Ba6 9. Ba3 d6 10. f4 Nc6
1961 Santa Fe – Round 5 – Bielicki, Carlos – 1-0 – Casabella, Miguel Angel – G20 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 d6 7. e3 Nh5 8. Nh3 f5 9. Nf2 Qe7 10. f4 Nf6
1961 Utrecht – Round 8 – Robatsch, Karl – 1-0 – Donner, Jan-Hein – G36 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 Ne8 7. e4 b6 8. Bd3 Ba6 9. a4 Nc6 10. Ba3 d6
1962 Lasker Memorial Berlin-Ost – Round 8 – Drimer, Dolfi – 1/2-1/2 – Fuchs, Reinhart – G34 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 Nh5 7. Nh3 f5 8. e3 d6 9. Bd3 e5 10. Nf2 Nc6
1962 LAT Ch – Round ? – Mileika, Janis – 0-1 – Tolush, Alexander V – G24 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 Ne8 7. e4 Nc6 8. Be3 b6 9. c5 d6 10. Bb5 Ne7
1962 Reggio Emilia ITA – Round 6 – Tatai, Stefano – 1-0 – Gragger, Anton Fritz – G22 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 Nh5 7. Nh3 f5 8. Bg5 Qe8 9. e3 d6 10. g4 fxg4
1963 ENG-NLD m – Round 1.6 – Barden, Leonard – 1/2-1/2 – Bergsma, Klaas – G4 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 Ne8 7. e4 b6 8. Bd3 Ba6 9. Nh3 Nc6 10. Qe2 Na5
1963 Hoogovens – Round 2 – Donner, Jan-Hein – 1-0 – Matanovic, Aleksandar – G24 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 d6 7. e4 e5 8. Ne2 Nbd7 9. Ng3 Re8 10. Be3 Nf8
1963 Hoogovens – Round 4 – Ivkov, Borislav – 1/2-1/2 – Parma, Bruno – G38 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 Ne8 7. e4 b6 8. Bd3 Nc6 9. Ne2 Ba6 10. Ng3 Na5
1964 Mar del Plata – Round 3 – Bielicki, Carlos – 1/2-1/2 – Serra Olives, Tomas – G10 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 d6 7. e4 e5 8. Bd3 c5 9. Ne2 Nc6 10. d5 Na5
1965 Harrachov U26 – Round 3 – Tichy, Vladimir – 1/2-1/2 – Janata, Michael – G6 1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 Ne8 7. e4 b6 8. Bd3 c5 9. Ne2 Nc6 10. O-O Ba6
1965 Hungary – Round 1 – Filep, Tibor – 1/2-1/2 – Csom, I. – G35 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 Nh5 7. Nh3 f5 8. e4 d6 9. Bg5 Qe8 10. Be2 f4
1967 HUN Ch Budapest HUN – Round 11 – Toth, Bela – 1-0 – Szilagyi, Peter – G41 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 Ne8 7. e4 b6 8. Bd3 Ba6 9. Ne2 Nc6 10. Ng3 Na5
1967 URS Team Ch – Round 1 – Mikenas, Alius – 0-1 – Taimanov, Mark E – G14 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 Ne8 7. e4 b6 8. Bd3 Ba6 9. f4 Nc6 10. e5 f5
41. Olympiad Open 2014 – Round 9.7 – Aleksandrov, Aleksej – 1/2-1/2 – Tiviakov, Sergei – G666 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 O-O 5. a3 Bxc3+ 6. bxc3 Nh5 7. Nh3 f5 8. Ra2 Nf6 9. Nf2 d6 10. e4 fxe4
42. Olympiad 2016 – Round 8.4 – Meshkovs, Nikita – 0-1 – Safarli, Elmir – G583 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 O-O 5. a3 Bxc3+ 6. bxc3 Nh5 7. Nh3 f5 8. e3 b6 9. Bd3 Ba6 10. O-O Nc6
RUS Ch Superfinal 2005 – Round 11 – Volkov, Sergey – 1/2-1/2 – Jakovenko, Dmitry – G61 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 O-O 5. a3 Bxc3+ 6. bxc3 Nh5 7. g3 f5 8. e4 b6 9. Nh3 d6 10. Bd3 Nf6
Saint Louis Blitz 2019 – Round 11.3 – Carlsen, Magnus – 1-0 – Karjakin, Sergey – G53 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 c5 7. e4 Nc6 8. Be3 b6 9. Bd3 Ba6 10. Nh3 Na5
Sparkassen Final 2002 – Round 4 – Topalov, Veselin – 1/2-1/2 – Leko, Peter – G4 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 O-O 5. a3 Bxc3+ 6. bxc3 Ne8 7. e4 b6 8. Bd3 Ba6 9. Nh3 Nc6 10. e5 Na5
Tal Memorial Blitz 2008 – Round 17 – Mamedyarov, Shakhriyar – 1-0 – Alekseev, Evgeny – G135 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 O-O 5. a3 Bxc3+ 6. bxc3 Ne8 7. a4 d6 8. e4 b6 9. a5 Ba6 10. Bd3 Nc6
Tal Memorial Blitz 2008 – Round 2 – Mamedyarov, Shakhriyar – 1-0 – Eljanov, Pavel – G14 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 O-O 5. a3 Bxc3+ 6. bxc3 Nh5 7. Nh3 f5 8. Bg5 Qe8 9. e3 d6 10. Bd3 e5
TCh-RUS 2008 – Round 9 – Sakaev, Konstantin – 1/2-1/2 – Tomashevsky, Evgeny – G240 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 O-O 5. a3 Bxc3+ 6. bxc3 Nh5 7. Nh3 f5 8. Nf2 d6 9. e4 Qe8 10. Bd3 e5
Vugar Gashimov Mem 2014 – Round 3.2 – Karjakin, Sergey – 1/2-1/2 – Carlsen, Magnus – G8 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 O-O 5. a3 Bxc3+ 6. bxc3 Nh5 7. Nh3 f5 8. e3 d6 9. Be2 c5 10. O-O Nc6
World Blitz 2009 – Round 6 – Carlsen, Magnus – 1-0 – Morozevich, Alexander – G53 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 O-O 5. a3 Bxc3+ 6. bxc3 Nh5 7. Nh3 f5 8. Bg5 Qe8 9. g4 fxg4 10. fxg4 Nf6

E27b — Saemisch

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 O-O 6.f3

Eval: [+0.06]

Les coups candidats

6…d5 — 28.5% (527 parties) →

Ambassadeurs : Herzog, Klaus (7x), Husemann, Andreas (6x), Tal, Mikhail (4x), Semcesen, Daniel (4x), Ingersol, Harry (4x), Legemaat, Gert (4x), Teschner, Rudolf (3x), Eisinger, Max Jr (3x)

6…Ne8 — 22.3% (413 parties)

Ambassadeurs : Volkov, Sergey (9x), Marchisotti, Mauro Dr (7x), Khenkin, Igor (6x), Choroszej, Aleksander (6x), Kasperkiewicz, Pawel (6x), Taimanov, Mark (5x), Daurelle, Herve (4x), Semcesen, Daniel (4x)

6…Nh5 — 16.9% (313 parties)

Ambassadeurs : Volkov, Sergey (8x), Choroszej, Aleksander (7x), Cebalo, Miso (4x), Fedorchuk, Sergey A. (4x), Kasperkiewicz, Pawel (4x), Belous, Vladimir (4x), Tiviakov, Sergei (4x), Szymanski, Robert (3x)

6…d6 — 12.8% (237 parties)

Ambassadeurs : Grabarchuk, Nikolay Borisovich (4x), Nopin, Vyacheslav Mikhailo (4x), Legemaat, Gert (4x), Donner, Jan-Hein (3x), Chaika, Leonid (3x), Meiners, Edwin (3x), Sherwood, Russell (3x), Bielicki, Carlos (2x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6…d5	6…Ne8	6…Nh5	6…d6
<1800	38	32%	11%	13%	24%
1800-2200	550	34%	15%	15%	15%
2200-2600	985	23%	26%	19%	11%
2600+	55	15%	31%	38%	—

Évolution par décennie (% des parties)

Décennie	N parties	6…d5	6…Ne8	6…Nh5	6…d6
1930s	6	83%	—	—	—
1940s	2	50%	—	—	—
1950s	19	42%	32%	16%	5%
1960s	54	41%	28%	11%	17%
1970s	33	21%	55%	6%	12%
1980s	42	29%	31%	17%	14%
1990s	66	52%	12%	3%	23%
2000s	335	31%	34%	13%	7%
2010s	917	24%	21%	21%	13%
2020s	377	29%	14%	16%	15%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6…d5	24%	29%	▲ +5.2%
6…Ne8	21%	14%	▼ -6.7%
6…Nh5	21%	16%	▼ -4.7%
6…d6	13%	15%	▲ +1.8%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 5 parties
Carlsen, Magnus — 4 parties
Ding, Liren — 2 parties
Euwe, Max — 1 partie
Botvinnik, Mikhail — 1 partie
Kasparov, Garry — 1 partie

Parties historiques

6…d5 — 28.5% (527 parties)

1933 — Kmoch, Hans vs Van den Bosch, Johannes — 0-1 — Amsterdam NED
1934 — Euwe vs Van den Bosch, Arno — 1-0 — ?
1934 — Euwe, Max vs Van den Bosch, Johannes — 1-0 — Amsterdam NED
1935 — Erdelyi, Stefan vs Raizman, Maurice — 1-0 — Warsaw POL
1936 — Pelikán, Jiří vs Frydman, Paulino — 0-1 — Novi Sad SRB

6…Ne8 — 22.3% (413 parties)

1950 — Szabo, Laszlo vs Taimanov, Mark — 0-1 — ?
1950 — Szabo, Ladislav vs Taimanov, Mark — 0-1 — Schiavno Zdroj
1950 — Najdorf, Miguel vs Beni, Alfred — 1/2-1/2 — Dubrovnik CRO
1951 — Stoltz, Gabriel vs Szabo, Ladislav — 1/2-1/2 — Zonal Marianske Lazne (Czech
1952 — Tal, Mikhail vs Zwaigzne — 1-0 — Ch Latvia (juniors)

6…Nh5 — 16.9% (313 parties)

1950 — Geller, Efim P. vs Pogats, Jozsef Jr. — 0-1 — Schiavno Zdroj
1950 — Bronstein, David I vs Szabo, Laszlo — 1-0 — Budapest HUN
1951 — Koberl, Ferenc vs Pogats, Jozsef Jr. — 1-0 — Hungary ch
1962 — Drimer, Dolfi vs Fuchs, Reinhart — 1/2-1/2 — Lasker mem Berlin-Ost
1962 — Tatai, Stefano vs Gragger, Anton Fritz — 1-0 — Reggio Emilia ITA

6…d6 — 12.8% (237 parties)

1953 — Doda, Zbigniew vs Kedziora, Claus — 1-0 — Poznan POL
1961 — Bielicki, Carlos vs Casabella, Miguel Angel — 1-0 — Santa Fe
1963 — Donner, Jan-Hein vs Matanovic, Aleksandar — 1-0 — ?
1963 — Donner, Jan-Hein vs Matanovic, Aleksandar — 1-0 — Beverwijk NED
1963 — Donner, Jan-Hein vs Hein-Matanovic, Alexander — 1-0 — Beverwijk Beverwijk NED

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