B25t — Sicilian: Closed, 6.f4 e6: 9.Be3 Nd4

1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.f4 e6 7.Nf3 Nge7 8.O-O O-O 9.Be3 Nd4 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Exploiter la case forte g5.

Atouts. Les Blancs s'appuient sur la case forte g5, un fou actif en e3 et la paire de fous.

Côté adverse. Le fou enfermé en c8.

Plans. h3 (Empêcher ...Bg4).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Exploiter la case forte d4.

Atouts. Les Noirs s'appuient sur un avant-poste en d4, un fou actif en g7 et la paire de fous.

Côté adverse. Le fou enfermé en g2.

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

Plans. ...Bd7 (PRIORITÉ: libérer le Bc8 (...Bd7, b6+Bb7, ...Bg4, ...Bf5)) ; ...c4 (Rupture) ; ...d5 (Rupture) ; ...e5 (Rupture) ; ...f6 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● c2→d3, h2→g3, d3→e4, g3→f4	● d6→c5, f7→e6, f7→g6, h7→g6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● g5 (2v0)	—
Cases faibles	● d4	—
Centre	● e4 (2v0)	—

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bg2	● Bg2 Enfermé (mob. 2)
Be3	● Be3 Actif (mob. 4)
Bg7		● Bg7 Actif (mob. 4)
Bc8		● Bc8 Non développé (mob. 1)
Paire de fous	● Oui	● Oui
Non développées	1 (● a1)	2 (● c8, ● a8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Roqué	● Roqué
Droits de roque	—	—

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● e4-e5, ● f4-f5	● …c5-c4, ● …d6-d5, ● …e6-e5, ● …f7-f6, ● …f7-f5

Partie
1963 YMCA – Round 3 – Reinhardt, Enrique – 0-1 – Dubin, Jorge – G5 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e6 7. Nf3 Nge7 8. O-O O-O 9. Be3 Nd4 10. Bf2 f5
1964 Kecskemet zt – Round 1 – Pietzsch, Wolfgang – 1/2-1/2 – Gheorghiu, Florin – G82 1. e4 g6 2. Nc3 Bg7 3. g3 c5 4. Bg2 Nc6 5. f4 d6 6. Nf3 e6 7. O-O Nge7 8. d3 O-O 9. Be3 Nd4 10. Kh1 Rb8
1965 Malaga – Round 2 – Medina-Garcia, Antonio – 1-0 – Gadia, Okicio – G1 1. e4 c5 2. Nc3 d6 3. g3 g6 4. Bg2 Bg7 5. d3 Nc6 6. f4 e6 7. Nf3 Nge7 8. O-O O-O 9. Be3 Nd4 10. g4 f5
1968 CB Cup Bad Aibling GER – Round 1 – Acharam Medina, Sebastian Alejandro – 0-1 – Ree, Hans – G1 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e6 7. Nf3 Nge7 8. O-O O-O 9. Be3 Nd4 10. Kh1 f5
1968 Hoogovens – Round 5 – Tal, Mikhail – 1/2-1/2 – Matanovic, Aleksandar – G54 1. g3 c5 2. Bg2 g6 3. Nc3 Bg7 4. d3 Nc6 5. f4 d6 6. Nf3 e6 7. O-O Nge7 8. e4 O-O 9. Be3 Nd4 10. Nh4 f5
1968 Skopje/Ohrid – Round 5 – Wade, Robert G – 0-1 – Savon, Vladimir – G42 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e6 7. Nf3 Nge7 8. O-O O-O 9. Be3 Nd4 10. Nh4 Rb8
1969 DSV-Turnier – Round 11 – Moehring, Guenther – 1/2-1/2 – Mista, Ladislav – G54 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e6 7. Nf3 Nge7 8. O-O O-O 9. Be3 Nd4 10. Nh4 f5
1969 DSV-Turnier – Round 7 – Moehring, Guenther – 0-1 – Espig, Lutz – G34 1. e4 c5 2. Nc3 d6 3. g3 Nc6 4. Bg2 g6 5. d3 Bg7 6. f4 e6 7. Nf3 Nge7 8. O-O O-O 9. Be3 Nd4 10. Nh4 Rb8
1969 Praia da Rocha zt – Round 17 – Schumacher, Helmut – 0-1 – Bobotsov, Milko G – G48 1. g3 c5 2. Bg2 Nc6 3. e4 g6 4. Nc3 Bg7 5. d3 d6 6. f4 e6 7. Nf3 Nge7 8. O-O O-O 9. Be3 Nd4 10. Nh4 Rb8
1969 Raach zt – Round 6 – Andersson, Ulf 1949 – 1/2-1/2 – Dueball, Juergen – G65 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e6 7. Nf3 Nge7 8. O-O O-O 9. Be3 Nd4 10. Bf2 Nec6
1969 Skopje Skopje MKD – Round ? – Evrosimovsky – 0-1 – Kholmov, Ratmir D – G5 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. Be3 Nd4 7. f4 d6 8. Nf3 Ne7 9. O-O O-O 10. Nh4 f5
1969 Venetie – Round 4 – Medina-Garcia, Antonio – 1/2-1/2 – Matulovic, Milan – G2 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e6 7. Nf3 Nge7 8. O-O O-O 9. Be3 Nd4 10. Nh4 Rb8
Linares 1983 – Round ? – Spassky, Boris V. – 1/2-1/2 – Karpov, Anatoly – G28 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 e6 7. f4 Nge7 8. Nf3 Nd4 9. O-O O-O 10. Bf2 Nxf3+
Linares 1983 – Round 1 – Spassky, Boris V. – 1/2-1/2 – Karpov, Anatoly – G3 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. Be3 d6 7. f4 Nge7 8. Nf3 Nd4 9. O-O O-O 10. Bf2 Nxf3+
Szirak Interzonal 1987 – Round 8 – Todorcevic Antic, Miodrag – 0-1 – Portisch, Lajos – G14 1. e4 c5 2. Nc3 d6 3. f4 g6 4. Nf3 Bg7 5. d3 Nc6 6. g3 e6 7. Bg2 Nge7 8. O-O O-O 9. Be3 Nd4 10. Bf2 Nec6
Tilburg Fontys 1996 – Round 8 – Adams, Michael – 1/2-1/2 – Lautier, Joel – G36 1. e4 c5 2. Nc3 d6 3. f4 g6 4. Nf3 Bg7 5. g3 Nc6 6. Bg2 e6 7. O-O Nge7 8. d3 O-O 9. Be3 Nd4 10. Bf2 Nec6

B25t — Closed e6:

1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.f4 e6 7.Nf3 Nge7 8.O-O O-O 9.Be3 Nd4

Eval: [-0.31]

Les coups candidats

10.e5 — 38.7% (2353 parties) →

Ambassadeurs : Starostits, Ilmars (43x), Rogulj, Branko (29x), Barkwell, Michael C (26x), Detela, Walter (19x), Kucera, Petr (16x), Gesing, Oliver (14x), Meinhardt, Maximilian, Dr. (14x), Stjazhkina, Olga (12x)

10.Qd2 — 23.1% (1403 parties) →

Ambassadeurs : Buecker, Stefan (18x), Medina-Garcia, Antonio (13x), Neumeier, Klaus (12x), Krallmann, Matthias (9x), Peschardt, Soren (8x), Roos, Louis (7x), Wade, Robert G (6x), Benschop, Anne Marie (6x)

10.Rb1 — 20.5% (1248 parties) →

Ambassadeurs : Casper, Thomas (15x), Bastian, Herbert (11x), Zatulovskaya, Tatiana (9x), Bonugli, Carlo (7x), Blodig, Reinhard (6x), Palma, Thomas (6x), Antal, Laszlo (6x), Lane, Gary W (5x)

10.Bf2 — 12.6% (769 parties)

Ambassadeurs : Larino Nieto, David (19x), Roos, Jean-Luc (18x), Areshchenko, Kateryna (15x), Klemanic, Emil (12x), Arapovic, Vitomir (10x), Bastian, Martin (10x), Roos, Daniel (9x), Todorcevic Antic, Miodrag (9x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	10.e5	10.Qd2	10.Rb1	10.Bf2
<1800	146	29%	22%	27%	14%
1800-2200	2419	39%	24%	21%	11%
2200-2600	2222	45%	20%	16%	16%
2600+	11	9%	18%	27%	45%

Évolution par décennie (% des parties)

Décennie	N parties	10.e5	10.Qd2	10.Rb1	10.Bf2
1950s	7	—	43%	57%	—
1960s	78	1%	59%	18%	4%
1970s	144	—	55%	26%	8%
1980s	518	18%	22%	39%	14%
1990s	1746	38%	23%	22%	12%
2000s	2218	46%	20%	17%	13%
2010s	1236	43%	23%	17%	12%
2020s	137	43%	21%	16%	16%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
10.e5	43%	43%	+0.3%
10.Qd2	23%	21%	▼ -1.8%
10.Rb1	17%	16%	-0.4%
10.Bf2	12%	16%	▲ +3.8%

Joueurs célèbres

Champions du monde dans cette position

Karpov, Anatoly — 4 parties
Karpov, Aleksandr — 2 parties
Tal, Mikhail — 1 partie
Anand, Viswanathan — 1 partie
Smyslov, Vladimir — 1 partie

Parties historiques

10.e5 — 38.7% (2353 parties)

1961 — Christoffel, Martin vs Matulovic, M. — 0-1 — Zurich SUI
1985 — Pieters, A.P. vs Knebel, Willi — 1-0 — WT/M/GT/305 corr
1986 — Bastian, Herbert vs Kavalek, Lubomir — 1/2-1/2 — GER
1986 — Biehler, Thomas vs Koch, Jean-Rene — 1-0 — Groningen NED
1986 — Bastian, Martin vs Cmiel, Thorsten — 1-0 — Krefeld GER

10.Qd2 — 23.1% (1403 parties)

1953 — Fuderer, Andrija vs Udovcic, Mijo — 1-0 — Zagreb CRO
1955 — Ivanco, Imrich vs Hostinsky, Zdenek — 1-0 — Prague CZE
1957 — Handel, Horst vs Kallas, Hans Joachim — 1/2-1/2 — Soemmerda
1961 — Van Donk, Diederik vs Spanjaard, Willem — 1-0 — The Hague ch-NLD
1962 — Ignatiev, Felix N vs Shamkovich, Leonid — 1/2-1/2 — Moscow RUS

10.Rb1 — 20.5% (1248 parties)

1952 — Karastoichev, Emil vs Bobekov, Radko — 0-1 — Sofia BUL
1956 — Chistiakov, Alexander vs Ignatiev, Felix N — 1/2-1/2 — Moscow RUS
1956 — Chistiakov, Alexander vs Vasiukov, Evgeni — 1/2-1/2 — Kharkov UKR
1958 — Van Schoor, Karl vs Palmason, Gudmundur — 1/2-1/2 — Munich GER
1961 — Maalouf, Carlos vs Schmidt, Wlodzimierz — 0-1 — The Hague NED

10.Bf2 — 12.6% (769 parties)

1963 — Reinhardt, Enrique vs Dubinin, Peter — 0-1 — Buenos Aires ARG
1963 — Reinhardt, Enrique vs Dubin, Jorge — 0-1 — Buenos Aires ARG
1969 — Andersson, Ulf vs Dueball, Juergen — 1/2-1/2 — Raach
1970 — Bilek, Istvan vs Hecht, Hans-Joachim — 1-0 — Bad Pyrmont GER
1971 — Todorcevic Antic, Miodrag vs Van Seters, Frits — 1-0 — Brussels BEL

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