D44g — Semi-Slav: Botvinnik, Ekstrom Variation

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5 9.exf6 gxh4 10.Ne5 * ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. a4 (43 % des parties) ; g3 (Préparer le fianchetto — 27 % des parties) ; Be2 (Fou actif (mobilité 6), Développer f1 — 24 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Qxf6 (Centraliser la dame, Prépare O-O-O — 90 % des parties) ; ...Bb7 (Développer c8 — 4 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	● f2, ● f6	● c4, ● c6, ● h4, ● h6
Pions isolés	● d4	● h4, ● h6
Arriérés	—	● c6
Chaînes	—	● b5→c4, c6→b5, f7→e6
Passés	—	—
Majorité	● aile roi 4v3	● aile dame 4v2

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● g4 (2v0)	● d5 (3v1)
Cases faibles	—	—
Centre	● e4 (1v0), ● e5 (1v0)	● d5 (3v1)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● c, ● e	● d, ● g

Pièces

	♔ Blancs	♚ Noirs
Bf1	● Bf1 Non développé (mob. 3)
Bc8		● Bc8 Non développé (mob. 3)
Bf8		● Bf8 Non développé (mob. 6)
Paire de fous	Non	● Oui
Non développées	3 (● 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	mobile
Ruptures	● d4-d5	● …c6-c5

Partie
1946 CAN Ch – Round ? – Crompton, Charles – 1-0 – Fox, Maurice – G13 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Bb4
1946 Helsinki – Round 5 – Ragozin, Viacheslav – 1-0 – Ali Beck, Bishr – G10 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 c6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1946 Stockholm 4647 – Round ? – Nilsson, Zandor – 0-1 – Book, Eero – G7 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 c6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1947 Buenos Aires ch-ARG – Round 1 – Martinez, Jose Enrique – 0-1 – Benko, Francisco – G32 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Bg5 c6 5. Nc3 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1947 Buenos Aires ch-ARG – Round 11 – Sanguinetti, Renato – 0-1 – Rossetto, Hector – G54 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1948 Saltsjobaden Interzonal – Round 1 – Lundin, Erik – 0-1 – Stahlberg, Gideon – G2 1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 Nf6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1949 Berlin GER – Round 12 – Lehmann, Heinz – 1-0 – Schwarz, Rolf – G9 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1949 Oldenburg – Round 3 – Kuppe, Wilhelm – 0-1 – Bogoljubow, Efim – G12 1. d4 Nf6 2. c4 c6 3. Nc3 d5 4. Nf3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1949 Trencianske Teplice – Round 17 – Ujtelky, Maximilian – 0-1 – Kottnauer, Cenek – G107 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1949 Trencianske-Teplice – Round 3 – Stahlberg, Gideon – 1/2-1/2 – Foltys, Jan – G27 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1950 Amsterdam ch-NED – Round 1 – Spanjaard, Eduard – 0-1 – Van Scheltinga, Theo – G4 1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 Nf6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1951 Moskou ch-URS – Round 1 – Bronstein, David I – 0-1 – Botvinnik, Mikhail – G14 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1953 NRW Ch – Round 1 – Lachmann, Hans G – 1-0 – Nitsch, Aleksander – G3 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1953 POL-ch11 – Round 9 – Gadalinski, Jan – 1-0 – Plater, Kazimierz – G53 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1955 Buenos Aires CA – Round 9 – Benko, Francisco – 0-1 – Sanguineti, Raúl Carlos – G62 1. d4 Nf6 2. c4 c6 3. Nc3 d5 4. Nf3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1955 DDR Ch 06th – Round 2 – Schindler, Leo – 1-0 – Zirngibl, Albert – G8 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qc7
1955 Zittau-C 5th – Round 3 – Starck, Bodo – 1-0 – Ullrich Bruno – G5 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1956 Leipzig ch GDR – Round 4 – Golz, Werner – 1-0 – Knothe, Karl – G10 1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 Nf6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1956 Mar del Plata – Round 9 – Szentkiralyi Toth, Vince – 0-1 – Sanguineti, Raúl Carlos – G49 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1957 Bratislava Bratislava SVK – Round 4 – Fuchs, Reinhart – 0-1 – Sefc, Jan – G13 1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. d4 c6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1958 Argentina – Round 15 – Espinosa Flores, Rafael Emilio – 0-1 – Sanguineti, Raúl Carlos – G113 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1958 Munich olm prel – Round 9 – Milev, Zdravko – 1-0 – Russell, M K A – G74 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1959 Marianske Lazne – Round 14 – Minev, Nikolay N – 0-1 – Jensen, Erik Bartram – G94 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1963 GDR Ch Aschersleben GER – Round 5 – Moehring, Guenther – 0-1 – Muehlberg, Siegfried – G30 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 c6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1963 POL Ch 20th – Round 11 – Balcerowski, Witold – 1-0 – Tarnowski, Alfred – G65 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1964 Leipzig Open 6364 2nd – Round 9 – Starck, Bodo – 0-1 – Fahnenschmidt, Gerhard – G13 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1965 POL Ch 22th – Round 4 – Balcerowski, Witold – 1-0 – Schinzel, Wladyslaw – G18 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1965 POL Ch 22th – Round 8 – Balcerowski, Witold – 1-0 – Tarnowski, Alfred – G41 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1965 Reggio Emilia 6566 08th – Round 9 – Szilagyi, Gyorgy Laszlo – 0-1 – Paoli, Enrico – G15 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Bb7
1966 Churchill Memorial Open 14th – Round 5 – Whiteley, Andrew Jonathan – 1-0 – Moffat, Colin I – G10 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1966 IBM – Round 2 – Szilagyi, Gyorgy Laszlo – 0-1 – Pomar Salamanca, Arturo – G7 1. c4 c6 2. Nf3 d5 3. d4 Nf6 4. Nc3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1966 Rzeszow ch POL – Round 8 – Zoltek, Tadeusz – 0-1 – Tarnowski, Alfred – G50 1. d4 d5 2. c4 c6 3. Nf3 e6 4. Nc3 Nf6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1967 Sweden (ch) – Round 5 – Martens, Rolf – 1-0 – Ek, Hans – G22 1. d4 Nf6 2. c4 c6 3. Nc3 d5 4. Nf3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Bb7
1968 Lugano ol (Men) – Round 1 – Kottnauer, Cenek – 1/2-1/2 – Durão, Joaquim Manuel – G17 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 c6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1968 Netanya-A – Round 10 – Ree, Hans – 0-1 – Hamann, Slawomir – G57 1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 Nf6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6
1969 Pointe-Claire ch CAN – Round ? – Macskasy, Elod – 1-0 – Biyiasas, Peter – G19 1. d4 e6 2. c4 d5 3. Nc3 c6 4. Nf3 Nf6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 h5
1969 Stary Smokovec – Round 9.1 – Szilagyi, Gyorgy Laszlo – 1/2-1/2 – Hoelzl, Franz – G35 1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 Nf6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. exf6 gxh4 10. Ne5 Qxf6

D44g — Botvinnik, Ekstrom Variation (1946)

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5 9.exf6 gxh4 10.Ne5

Les coups candidats

10…Qxf6 — 90.4% (680 parties)

Ambassadeurs : Moskalenko, Viktor (10x), Cramling, Pia (9x), Shabalov, Alexander (8x), Lacrosse, Marc (8x), Ikonnikov, Vyacheslav (6x), Kuijf, Marinus (6x), Starck, Bodo (6x), Novikov, Igor (5x)

10…Bb7 — 4.4% (33 parties)

Ambassadeurs : Lacrosse, Marc (2x), Hudecek, Jan (2x), Alcorta, Martinez Leopoldo (1x), Ek, Hans (1x), Szilagyi, Gyorgy Laszlo (1x), Paoli, Enrico (1x), Whiteley, Andrew Jonathan (1x), Timman, Jan H (1x)

10…Bb4 — 2.9% (22 parties)

Ambassadeurs : Rajkovic, Dusan (2x), Basagic, Zlatko (2x), Gerber, Vladimir (1x), Ivanenko, Bogdan (1x), Andersson, Ulf (1x), Hedman Senarega, Jose Antonio (1x), Whiteley, Andrew Jonathan (1x), Supancic, Darko (1x)

10…Qc7 — 0.8% (6 parties)

Ambassadeurs : Heymann, Samuel (1x), Zirngibl, Albert (1x), Richter, Wolfgang (1x), Grund, Holger (1x), Gueneau, Christophe (1x), Mailfert, Jean-Pierre (1x), Cole, Roland B (1x), Jensen, Jakob Bjerre (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	10…Qxf6	10…Bb7	10…Bb4	10…Qc7
<1800	6	100%	—	—	—
1800-2200	220	85%	9%	3%	1%
2200-2600	399	93%	2%	3%	1%
2600+	5	100%	—	—	—

Évolution par décennie (% des parties)

Décennie	N parties	10…Qxf6	10…Bb7	10…Bb4	10…Qc7
1950s	30	93%	3%	—	3%
1960s	31	81%	13%	3%	—
1970s	24	83%	—	17%	—
1980s	79	95%	3%	3%	—
1990s	170	92%	3%	1%	2%
2000s	248	90%	6%	3%	0%
2010s	151	91%	3%	3%	1%
2020s	19	89%	5%	5%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
10…Qxf6	91%	89%	▼ -1.3%
10…Bb7	3%	5%	▲ +2.0%
10…Bb4	3%	5%	▲ +2.0%
10…Qc7	1%	0%	▼ -0.7%

Joueurs célèbres

Champions du monde dans cette position

Botvinnik, Mikhail — 1 partie

Parties historiques

10…Qxf6 — 90.4% (680 parties)

1950 — Spanjaard, Eduard vs Bosch van Rosenthal, Edzard — 0-1 — Amsterdam ch-NED
1950 — Zagorovsky, Mikhail Pavlovich vs Mezgailis, Daniels Edgars — 1-0 — USSR
1951 — Bronstein, David I vs Botvinnik, Mikhail — 0-1 — Moskou ch-URS
1951 — Pomar Salamanca, Arturo vs Tramoyeres, P — 1-0 — San Sebastian ESP/K
1951 — Sajtar, Jaroslav vs Kottnauer, Cenek — 0-1 — Prague CZE

10…Bb7 — 4.4% (33 parties)

1959 — Saborido Carre, Rafael vs Franco Raymundo, Eduardo — 1/2-1/2 — Santa Cruz de Tenerife
1962 — Waites, Charlie vs Basman, Michael J — 1-0 — Whitby
1965 — Szilagyi, Gyorgy Laszlo vs Paoli, Enrico — 0-1 — Reggio Emilia ITA
1966 — Whiteley, Andrew Jonathan vs Timman, Jan H — 1/2-1/2 — Groningen NED
1967 — Alcorta, Martinez Leopoldo vs Ek, Hans — 1-0 — Sweden (ch)

10…Bb4 — 2.9% (22 parties)

1963 — Gerber, Vladimir vs Ivanenko, Bogdan — 0-1 — Kiev UKR
1970 — Van Seters, Frits vs Bonne, Marck — 1-0 — Ghent
1972 — Amos, Bruce M. vs Garcia Toledo, Pedro — 1-0 — Skopje MKD
1976 — Andersson, Ulf vs Hedman Senarega, Jose Antonio — 1-0 — Cienfuegos City CUB
1978 — Whiteley, Andrew Jonathan vs Supancic, Darko — 1/2-1/2 — Londen open

10…Qc7 — 0.8% (6 parties)

1955 — Heymann, Samuel vs Zirngibl, Albert — 1-0 — ?
1993 — Richter, Wolfgang vs Grund, Holger — 1-0 — Berlin ch-U15 GER
1996 — Gueneau, Christophe vs Mailfert, Jean-Pierre — 0-1 — France Tch 95/96
1997 — Cole, Roland B vs Jensen, Jakob Bjerre — 1-0 — Aarhus open
2009 — Teske, Henrik vs Reitz, Rolf — 1-0 — Bad Woerishofen GER

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