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

Avantages : majorité centre (3v1), paire de fous, colonne b.
Faiblesses adverses : Bc8 enfermé, roi noir au centre, pawn c5 en prise.
Problèmes : roi au centre, Bc1 enfermé, Bf1 enfermé, arriérés e2, c3, isolé a3, 5 pièces non développées (G1, C1, F1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● e4 — Centre d4+e4, menace e5, libère Bf1
● Nf3 — Développer Ng1
● Bg5 — Clouer Nf6
● Rb — Tour sur colonne b

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : majorité aile_dame (3v2), case forte d5, colonne d.
Faiblesses adverses : arriérés e2, c3, isolé a3, Bc1 enfermé, Bf1 enfermé, roi blanc au centre, pawn d5 en prise.
Problèmes : roi au centre, Bc8 enfermé, 4 pièces non développées (B8, C8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...Bd7 — PRIORITÉ: libérer le Bc8 (...Bd7, b6+Bb7, ...Bf5)
● ...Nbd7 — Développer Nb8
● ...c4 — Rupture
● ...e5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

E25a — Saemisch

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

Eval: [+0.05]

Les coups candidats

7…Nxd5 — 71.0% (3954 parties) →

Ambassadeurs : Moskalenko, Viktor (35x), Volkov, Sergey (35x), Ingersol, Harry (28x), Daus, Peter (24x), Shirov, Alexei (24x), Zubac, Marius (19x), Herzog, Klaus (18x), Legemaat, Gert (17x)

7…exd5 — 28.8% (1602 parties)

Ambassadeurs : Herzog, Klaus (20x), Legemaat, Gert (16x), Zubac, Marius (13x), Moskalenko, Viktor (10x), González Barcina, Francisco-José (10x), Ingersol, Harry (9x), Troia, Elio (9x), Laghetti, Gaetano (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), Shields, Glen D (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	76	70%	29%	1%	—
1800-2200	1542	64%	36%	1%	0%
2200-2600	2975	72%	28%	—	0%
2600+	150	89%	11%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	7…Nxd5	7…exd5	7…cxd4	7…O-O
1930s	4	50%	50%	—	—
1940s	9	33%	67%	—	—
1950s	61	77%	23%	—	—
1960s	245	82%	18%	—	—
1970s	134	84%	16%	—	—
1980s	169	80%	18%	—	—
1990s	559	87%	13%	—	—
2000s	1339	76%	24%	0%	0%
2010s	2294	63%	37%	0%	0%
2020s	757	68%	32%	0%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7…Nxd5	63%	68%	▲ +5.1%
7…exd5	37%	32%	▼ -5.1%
7…cxd4	0%	0%	-0.0%
7…O-O	0%	0%	-0.1%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 6 parties
Karpov, Aleksandr — 6 parties
Smyslov, Vladimir — 5 parties
Anand, Viswanathan — 5 parties
Carlsen, Magnus — 5 parties
Ding, Liren — 4 parties
Karpov, Anatoly — 3 parties
Kramnik, Vladimir — 3 parties
Euwe, Max — 2 parties
Botvinnik, Mikhail — 2 parties
Hou, Yifan — 2 parties
Ju, Wenjun — 2 parties
Gukesh D — 1 partie

Parties historiques

7…Nxd5 — 71.0% (3954 parties)

1936 — Boros, Sandor vs Steiner, Lajos — 1/2-1/2 — Budapest HUN
1939 — Landau, Salo vs Van Scheltinga, Theo — 0-1 — Amsterdam NED
1941 — Bondarevsky, Igor vs Smyslov, Vasily — 1/2-1/2 — Leningrad RUS
1941 — Bondarevsky, Igor vs Smyslov, Vladimir — 1/2-1/2 — Leningrad- Moscow URS
1949 — Beni, Alfred vs Pachman, Ludek — 0-1 — Arbon

7…exd5 — 28.8% (1602 parties)

1938 — Euwe, Max vs Golombek, Harry — 1-0 — Hastings ENG
1939 — Burillo Landau, Dante Ramon vs Agundez Conde, Egor — 1-0 — Bournemouth
1942 — Junge, Klaus vs Bogoljubow, Efim — 0-1 — Munich GER
1942 — Junge, Kai vs Bogoljubow, Efim — 0-1 — Munich GER
1946 — O'Kelly, Albéric de Galway vs Wood, Gabriel — 1-0 — Barcelona ESP

7…cxd4 — 0.2% (9 parties)

2002 — Blanchard Jody vs Barre, Yann — 1-0 — Vandoeuvre
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 Shields, Glen D — 1/2-1/2 — ICCF
2019 — Amico, Rosario vs Gulbis, Harijs — 1-0 — ICCF

	♔ Blancs	♚ Noirs
Pions doublés	● d4, ● d5	—
Pions isolés	● a3	—
Arriérés	● e2, ● c3	—
Chaînes	● e2→f3, g2→f3, c3→d4	● f7→e6
Passés	—	—
Majorité	● centre 3v1	● aile_dame 3v2

Cases

	♔ Blancs	♚ Noirs
Cases fortes	—	● d5 (3v0)
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	● c3-c4, ● d5-d6, ● e2-e3, ● f3-f4	● …c5-c4, ● …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