E25a — Nimzo-Indian: Saemisch, 5…c5 6.f3 d5 7.cxd5

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.f3 d5 7.cxd5 * ● Trait aux Noirs

Ouverture — Tension centrale

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. dxc5 (Capture en c5, Frapper le centre adverse — 61 % des parties) ; e3 (Libérer Bf1, préparer Bd3 — 28 % des parties) ; Qd3 (Centraliser la dame, Prépare O-O-O — 7 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Nxd5 (Cavalier centralisé en d5 — 71 % des parties) ; ...exd5 (Capture en d5, Occuper le centre — 29 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	● d4, ● d5	—
Pions isolés	● a3	—
Arriérés	—	—
Chaînes	● e2→f3, g2→f3, c3→d4	● f7→e6
Passés	—	—
Majorité	—	● aile dame 3v2

Cases

	♔ Blancs	♚ Noirs
Cases fortes	—	—
Cases faibles	—	—
Centre	● d4 (2v1), ● e5 (1v0)	● d5 (3v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● b	● d

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 6)
Bf1	● Bf1 Non développé (mob. 0)
Bc8		● Bc8 Non développé (mob. 1)
Paire de fous	● Oui	Non
Non développées	5 (● g1, ● c1, ● f1, ● a1, ● h1)	4 (● b8, ● 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	tension
Ruptures	—	● …e6-e5

Partie
1938 Hastings3839 – Round 2 – Euwe, Max – 1-0 – Golombek, Harry – G6 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 exd5 8. e3 O-O 9. Bd3 b6 10. Ne2 Bb7
1942 Munich – Round 1 – Junge, Kai – 0-1 – Bogoljubow, Efim – G7 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 exd5 8. e3 Bf5 9. Ne2 Nc6 10. Qb3 O-O
1942 Munich – Round 7 – Junge, Klaus – 0-1 – Bogoljubow, Efim – G48 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 exd5 8. e3 Bf5 9. Ne2 Nc6 10. Qb3 O-O
1946 Barcelona – Round 6 – O'Kelly, Albéric de Galway – 1-0 – Wood, Gabriel – G37 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 exd5 8. e3 O-O 9. Bd3 b6 10. Ne2 Ba6
1948 US Open Baltimore, MD USA – Round 8 – Mengarini, Ariel – 1/2-1/2 – Pinkus, Albert – G21 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 exd5 8. e3 O-O 9. Bd3 b6 10. Ne2 Re8
1949 BUL Ch – Round 14 – Bobekov, Radko – 1/2-1/2 – Dimitrov Krastev, Krastjo – G69 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 exd5 8. e3 O-O 9. Bd3 Nc6 10. Ne2 Re8
1950 URS Ch sf – Round 2 – Kuzminykh, Evgeny – 1-0 – Koblencs, Alexander – G1 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 exd5 8. e3 O-O 9. Ne2 c4 10. g4 Ne8
1954 Bucharest – Round 17 – Korchnoi, Viktor – 1/2-1/2 – O'Kelly, Albéric de Galway – G141 1. c4 Nf6 2. d4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 exd5 8. e3 c4 9. g4 Nc6 10. Ne2 Na5
1956 URS Ch, semi final – Round 1 – Kortchnoi, V. – 1-0 – Chukaev, E. – G7 1. c4 e6 2. d4 Nf6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 exd5 8. e3 O-O 9. Bd3 Re8 10. Ne2 b6
1959 Belgrade – Round 2 – Portisch, Lajos – 1/2-1/2 – Matanovic, Aleksandar – G55 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 exd5 8. e3 Bf5 9. Ne2 O-O 10. Ng3 Bg6
1959 Lima – Round 10 – Jauregui, Carlos – 1/2-1/2 – Quinones Carrillo, Oscar – G51 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 exd5 8. e3 O-O 9. Bd3 Re8 10. Ne2 b6
1959 Quilmes – Round 3 – Sanguinetti, Raul – 1-0 – Luckis, Marcos – G32 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 exd5 8. e3 O-O 9. Bd3 Nc6 10. Ne2 Re8
1959 Stevenson Memorial – Round 3 – Karaklajic, Nikola – 1-0 – Gereben, Erno – G11 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 exd5 8. e3 Nh5 9. Qc2 Nc6 10. Bd3 c4
1959 URS-JUG – Round 1 – Taimanov, Mark E – 1-0 – Milic, Borislav – G2 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 exd5 8. e3 Nh5 9. Qc2 O-O 10. g4 Nf6
1960 AUS Ch – Round 8.4 – Purdy, Cecil J S – 1/2-1/2 – Teters, A. – G38 1. c4 Nf6 2. d4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 exd5 8. e3 O-O 9. Bd3 Re8 10. Ne2 b6
1960 CSR Ch – Round 3 – Marsalek, Josef – 1-0 – Blatny, Frantisek – G23 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 exd5 8. e3 Qc7 9. Qd2 Bf5 10. Ne2 c4
1960 CSR Ch – Round 9 – Vesely, Jiri – 0-1 – Florian, Jaromir – G76 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 c5 5. a3 Bxc3+ 6. bxc3 d5 7. cxd5 exd5 8. e3 Bf5 9. Ne2 Qa5 10. Ng3 Bg6
1960 Leipzig olm fin-A – Round 1 – Tal, Mikhail – 1-0 – Padevsky, Nikola – G2 1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 exd5 8. e3 Bf5 9. Ne2 O-O 10. g4 Nxg4
1960 Leipzig olm fin-B – Round 6 – Ojanen, Kaarle S – 1-0 – Thorbergsson, Freysteinn – G70 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 exd5 8. e3 O-O 9. Bd3 Re8 10. Ne2 b6
1960 Leipzig olm prel – Round 6 – Dittmann, Sieghart – 1/2-1/2 – Kraidman, Yair – G200 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 exd5 8. e3 O-O 9. Bd3 Nc6 10. Ne2 Ne7
1960 Leningrad tt – Round 4 – Nikolaevsky, Yuri V – 0-1 – Sails – G40 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 exd5 8. e3 Bf5 9. Ne2 O-O 10. Ng3 Bg6
1960 Ljubljana – Round 6 – Damjanovic, Marko – 1-0 – Vukovic, Maksimilijan – G50 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 exd5 8. e3 Nh5 9. Ne2 f5 10. g3 Nf6
1960 Mar del Plata – Round 5 – Marini, Luis – 0-1 – Olafsson, Fridrik – G48 1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 exd5 8. e3 Bf5 9. Ne2 O-O 10. Ng3 Bg6
1961 Bled – Round 6 – Gligorić, Svetozar – 1-0 – Germek, Milan – G55 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 exd5 8. e3 Bf5 9. Ne2 Nc6 10. Ng3 Bg6
1961 Rostov – Round 10 – Bondarevsky, Igor – 1-0 – Ujtelky, Maximilian – G28 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 exd5 8. e3 O-O 9. Bd3 Re8 10. Ne2 b6
1961 WchT U26 08th – Round 4.4 – Khodos, German – 1-0 – Hellstrom, Bengt – G42 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 exd5 8. e3 O-O 9. Bd3 Nc6 10. Ne2 Re8
1962 Athens simul 1 – Round 1.5 – O'Kelly de Galway, Alberic – 0-1 – Kazilaris, Nikolaos – G20 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 exd5 8. e3 c4 9. g4 Nc6 10. Ne2 Bd7
1962 Varna olm – Round ? – Beni, Alfred – 1/2-1/2 – Petersen, Finn – G466 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 exd5 8. e3 Bf5 9. Ne2 O-O 10. g4 Be6
1962 Varna olm – Round 8 – Robatsch, Karl – 1/2-1/2 – Pustina, Ylvi – G186 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 exd5 8. e3 O-O 9. Bd3 b6 10. Ne2 Re8
1963 Hoogovens-C – Round 8 – Van Seters, Frits – 0-1 – Smederevac, Petar – G28 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 exd5 8. e3 O-O 9. Bd3 b6 10. Ne2 Ba6
1965 Hamburg etc – Round 10 – Forintos, Gyozo V – 1-0 – Aczel Szabo, Janos – G119 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 exd5 8. e3 O-O 9. Ne2 b6 10. Ng3 Ba6
1965 HUN-ch21 – Round 1 – Forintos, Gyozo V – 1/2-1/2 – Foldi, Jozsef – G22 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 exd5 8. e3 Bf5 9. Ne2 Nc6 10. Ng3 Bg6
1965 Hungary – Round 1 – Dely, Peter – 1/2-1/2 – Forintos, Gyozo V – G27 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 exd5 8. e3 Nh5 9. Qc2 f5 10. Bb5+ Nc6
1967 October Revolution 50 – Round 1 – Koychev Vladimirov, Cristian – 1-0 – Aczel Szabo, Janos – G23 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 exd5 8. e3 Bf5 9. Ne2 c4 10. g4 Bd3
1967 URS Team Ch – Round 1 – Vladimirov, Boris T – 1-0 – Arulaid, Alexander – G18 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 exd5 8. e3 Bf5 9. Ne2 O-O 10. g4 Be6
1968 Bristol ch-BCF – Round 4 – Hollis, Adrian – 1/2-1/2 – Alcozer Williams, Aure Manuel – G47 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 exd5 8. e3 Bf5 9. Ne2 Nc6 10. g4 Be6
1968 URS Team Ch – Round ? – Kondratiev, Pavel E – 1-0 – Zdanovs, Igors – G1 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 exd5 8. e3 Bf5 9. Ne2 Nc6 10. Nf4 h6
1968 URS Team Ch – Round 1 – Kondratiev, Pavel E – 1-0 – Zdanovs, Igors – G48 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 exd5 8. e3 Bf5 9. Ne2 Nc6 10. Nf4 h6
WCh 2013 – Round 9 – Anand, Viswanathan – 0-1 – Carlsen, Magnus – G2 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 exd5 8. e3 c4 9. Ne2 Nc6 10. g4 O-O

E25a — Saemisch (1938)

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.f3 d5 7.cxd5

Les coups candidats

7…Nxd5 — 70.8% (4000 parties) →

Ambassadeurs : Moskalenko, Viktor (36x), Volkov, Sergey (36x), Ambasa Ingrio (33x), Zubac, Marius (25x), Daus, Peter (23x), Shirov, Alexei (21x), Malaniuk, Vladimir P (16x), Krizsany, Laszlo (14x)

7…exd5 — 29.0% (1636 parties)

Ambassadeurs : Herzog, Klaus (20x), Zubac, Marius (14x), Tylecek, Drahomir (11x), Moskalenko, Viktor (10x), Laghetti, Gaetano (9x), Troia, Elio (9x), Volkov, Sergey (9x), Ambasa Ingrio (9x)

7…cxd4 — 0.2% (9 parties)

Ambassadeurs : Blanchard Jody (1x), Barre, Yann (1x), Dorn, Matthias (1x), Alker, Dennis (1x), Ballon, Guenther (1x), Weyand, Fernand (1x), Almirall Botella, Jaume (1x), Marques Taltavull, Antonio (1x)

7…O-O — 0.1% (3 parties)

Ambassadeurs : Weiss, Jan (1x), Splíchal, Josef (1x), Pyrich, George (1x), Glein, Samuel Dahl (1x), Amico, Rosario (1x), Gulbis, Harijs (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7…Nxd5	7…exd5	7…cxd4	7…O-O
<1800	218	68%	31%	1%	—
1800-2200	2022	64%	35%	0%	0%
2200-2600	2596	73%	27%	—	0%
2600+	127	90%	10%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	7…Nxd5	7…exd5	7…cxd4	7…O-O
1950s	61	77%	23%	—	—
1960s	241	81%	19%	—	—
1970s	134	85%	15%	—	—
1980s	170	81%	18%	—	—
1990s	558	87%	13%	—	—
2000s	1339	76%	24%	0%	0%
2010s	2304	63%	37%	0%	0%
2020s	844	67%	33%	0%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7…Nxd5	63%	67%	▲ +4.0%
7…exd5	37%	33%	▼ -4.0%
7…cxd4	0%	0%	-0.1%
7…O-O	0%	0%	-0.1%

Joueurs célèbres

Champions du monde dans cette position

Karpov, Anatoly — 7 parties
Tal, Mikhail — 5 parties
Anand, Viswanathan — 5 parties
Carlsen, Magnus — 5 parties
Kramnik, Vladimir — 4 parties
Ding, Liren — 4 parties
Smyslov, Vladimir — 2 parties
Botvinnik, Mikhail — 2 parties
Hou, Yifan — 2 parties
Ju, Wenjun — 2 parties
Karpov, Aleksandr — 1 partie
Gukesh D — 1 partie

Parties historiques

7…Nxd5 — 70.8% (4000 parties)

1950 — Muhring, Willem Jan vs Eken, Max — 0-1 — NLD-ch Amsterdam NED
1950 — Castillo Bermudez, Manuel vs Donner, Jan-Hein — 1/2-1/2 — Venice ITA
1950 — Steiner, Herman vs Donner, Jan-Hein — 1/2-1/2 — Venice ITA
1950 — Castillo, Manuel vs Donner, Jan-Hein — 1/2-1/2 — Venice ITA
1950 — Gligorić, Svetozar vs Martin Martinez, Pedro Jose — 1-0 — Mar del Plata ARG

7…exd5 — 29.0% (1636 parties)

1950 — Kuzminykh, Evgeny vs Koblencs, Alexander — 1-0 — Leningard
1950 — Steven, George A vs Vasu KP — 1-0 — Santa Barbara, CA
1952 — Sakellaropoulos, Theodoros vs Loverdos, Spyridon — 1-0 — Athens GRE
1952 — Veltmander, Iogannes vs Shaposhnikov, Yury — 1-0 — Tula RUS
1954 — Kortchnoi, V. vs Atim Alicia Okello — 1/2-1/2 — Bucharest ROU

7…cxd4 — 0.2% (9 parties)

2002 — Blanchard Jody vs Barre, Yann — 1-0 — ?
2003 — Ballon, Guenther vs Weyand, Fernand — 1-0 — Bad Zwischenahn
2004 — Dorn, Matthias vs Alker, Dennis — 1-0 — Helmstedt
2008 — Almirall Botella, Jaume vs Marques Taltavull, Antonio — 0-1 — Catalunya
2010 — Volkov, Sergey vs De Lisa, Carmine — 1-0 — Paleochora GRE

7…O-O — 0.1% (3 parties)

2007 — Weiss, Jan vs Splíchal, Josef — 1-0 — ICCF
2010 — Pyrich, George vs Glein, Samuel Dahl — 1/2-1/2 — ICCF
2019 — Amico, Rosario vs Gulbis, Harijs — 1-0 — ICCF