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

Avantages : case forte e4, case forte f4, case forte g5, Be3 actif, paire de fous.
Faiblesses adverses : arriéré f7, Bc8 enfermé.
Problèmes : Bg2 enfermé.
Plans :
● h3 — Empêcher ...Bg4
● c3 — Préparer d4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : avant-poste d4(C), Bg7 actif, paire de fous.
Faiblesses adverses : Bg2 enfermé.
Problèmes : Bc8 enfermé, arriéré f7.
Plans :
● ...Bd7 — PRIORITÉ: libérer le Bc8 (...Bd7, b6+Bb7, ...Bg4, ...Bf5)
● ...Bg4 — Clouer Nf3
● ...c4 — Rupture
● ...d5 — Rupture
● ...e5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

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

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

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e4 (2v0), ● f4 (2v0), ● 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

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