B40 — Sicilian Defense: Pin Variation, Koch Variation

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 ● Trait aux Noirs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

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Plans. Bd2 (Fou actif (mobilité 5), Développer c1 — 48 % des parties) ; Qg4 (Prépare O-O-O — 41 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

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Plans. ...Nd5 (Cavalier centralisé en d5 — 79 % des parties) ; ...Ne4 (Cavalier centralisé en e4 — 14 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Base Masters : Blancs 49.4%, Nulles 27.5%, Noirs 23.1%.

Coups candidats

6…Nd5  (92.1% — Blancs: 48.6% | Nulles: 28.4% | Noirs: 23.0%)
6…Ne4  (7.0% — Blancs: 60.0% | Nulles: 20.0% | Noirs: 20.0%)
6…Qc7  (0.5%)
6…Qa5  (0.5%)

auto

Analyse coup par coup — 11 demi-coups commentés

1.e4 Avancée centrale — contrôle d5, f5. Prépare d4, f4, Bc4, Bd3.
1…c5 Avancée centrale — contrôle b4, d4. Prépare Nc6, d5.
2.Nf3 Contrôle c4, d4, d5, e5.
2…e6 Avancée centrale — contrôle d5, f5. Prépare d5, Be7, Bd6.
3.d4 Avancée centrale — contrôle c5, e5. Prépare c4, e4, Nc3.
3…cxd4 Capture en d4 — résout la tension centrale.
4.Nxd4 Capture pion en d4.
4…Nf6 Contrôle e4, c5, d5, f5.
5.Nc3 Contrôle c4, f4, d5, f5.
5…Bb4 Contrôle e4, c5, d5, f5.
6.e5 Avancée centrale — contrôle d6, f6. Prépare d6, f6.

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	● d7
Chaînes	—	● d7→e6, f7→e6
Passés	—	—
Majorité	● aile dame 3v2	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (3v0)	● d5 (2v1)
Cases faibles	—	—
Centre	● d4 (1v0)	● d5 (2v1)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● c

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bf1	● Bf1 Non développé (mob. 5)
Bb4		● Bb4 Actif (mob. 7)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Clouages	● knight c3	—
Non développées	4 (● 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	fermé
Ruptures	—	● …d7-d6

Partie
1935 GER Ch 3rd – Round 1 – Schoenmann, Wilhelm – 1-0 – Elstner, Rudolf – G2 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Nd5 7. Bd2 Nxc3 8. bxc3 Bf8 9. Bd3 Nc6 10. Qe2 d5
1938 Bad Oeynhausen – Round 10 – Acebey Michel, Veroska – 1-0 – Becker, Albert – G59 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Ne4 7. Qg4 Nxc3 8. Qxg7 Rf8 9. a3 Ba5 10. Bh6 Qe7
1938 Krakow Krakow POL – Round ? – Pytlakowski, Andrzej – 0-1 – Sajtar, Jaroslav – G7 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Nd5 7. Qg4 Kf8 8. a3 Ba5 9. Bd2 Nxc3 10. bxc3 Qc7
1939 Kemeri / Riga – Round 1 – Szabo, Ladislav – 1-0 – Mikenas, Vladas – G51 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Ne4 7. Qg4 Nxc3 8. Qxg7 Rf8 9. a3 Nb5+ 10. axb4 Nxd4
1942 Moscow RUS – Round 1 – Panov, Vasily – 1/2-1/2 – Kan, Ilya A – G15 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Nd5 7. Bd2 Nc6 8. Nxd5 Bxd2+ 9. Qxd2 exd5 10. O-O-O O-O
1948 Bad Nauheim – Round 1 – Rautenberg, Wilhelm – 1/2-1/2 – Czaya, Richard – G20 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Nd5 7. Bd2 Nxc3 8. bxc3 Be7 9. Qg4 Kf8 10. Bd3 d6
1950 FRG Ch – Round 17 – Unzicker, Wolfgang – 1/2-1/2 – Sahlmann, Walter – G40 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Ne4 7. Qg4 Qa5 8. Qxg7 Bxc3+ 9. bxc3 Qxc3+ 10. Ke2 b6
1955 Hungary Ch – Round 1 – Portisch, Lajos – 0-1 – Bilek, Istvan – G41 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Nd5 7. Bd2 Bxc3 8. bxc3 Qh4 9. Nb5 O-O 10. c4 a6
1958 Munchen olm – Round 1 – Boria Buisac, Lucas – 1-0 – Palmiotto, Fiorentino – G16 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Ne4 7. Qg4 Nxc3 8. a3 Bf8 9. bxc3 Qc7 10. Qg3 a6
1958 Portoroz Interzonal – Round 5 – Olafsson, Fridrik – 1-0 – Cardoso Da Silva, Roberto – G47 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Nd5 7. Bd2 Bxc3 8. bxc3 Qc7 9. f4 a6 10. c4 Ne7
1959 HUN Ch Budapest HUN – Round 15 – Florian, Tibor – 1/2-1/2 – Forintos, Gyozo V – G61 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Ne4 7. Qg4 Nxc3 8. Qxg7 Rf8 9. a3 Qa5 10. Bh6 Be7
1960 Corr – Round 1 – Di Pasqua, Ginevra – 1/2-1/2 – Palmiotto, Fiorentino – G6 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Nd5 7. Bd2 Nxc3 8. bxc3 Be7 9. Qg4 Kf8 10. Bd3 d6
1960 Olympiad final C – Round 10 – Noradounghian, Georges – 1-0 – Tamburini, Mario – G18 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Ne4 7. Qg4 Nxc3 8. Qxg7 Rf8 9. a3 Nb5+ 10. axb4 Nxd4
1961 Moscow RUS – Round 1 – Lutikov, Anatoly S – 1-0 – Gusev, Nikita – G8 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Ne4 7. Qg4 Qa5 8. Qxe4 Bxc3+ 9. bxc3 Qxc3+ 10. Kd1 Qxa1
1962 Corr BdF – Round 1 – Fiallo Kaminski, Ricardo – 1-0 – Walther, Edgar – G4 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Ne4 7. Qg4 Bxc3+ 8. bxc3 Qa5 9. Qxg7 Qxc3+ 10. Ke2 Nc6
1962 Erevan ch-URS – Round 1 – Krogius, Nikolai V – 1-0 – Korelov, Alexander P – G88 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Ne4 7. Qg4 Qa5 8. Qxe4 Bxc3+ 9. bxc3 Qxc3+ 10. Kd1 Qxa1
1962 Erevan ch-URS – Round 1 – Shianovsky, Vladislav I – 1-0 – Korelov, Alexander P – G86 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Ne4 7. Qg4 Qa5 8. Qxg7 Bxc3+ 9. bxc3 Qxc3+ 10. Ke2 Nc6
1962 Poznan ch POL – Round 14 – Tarnowski, Alfred – 0-1 – Brzozka, Stefan – G92 1. e4 c5 2. Ne2 e6 3. d4 Nf6 4. Nbc3 cxd4 5. Nxd4 Bb4 6. e5 Nd5 7. Nb5 a6 8. Nd6+ Bxd6 9. exd6 Nxc3 10. bxc3 b5
1967 Vrnjacka Banja zt – Round 1 – Hindle, Owen M – 1/2-1/2 – Gunnarsson, Gudmundur – G6 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Nd5 7. Bd2 Bxc3 8. bxc3 O-O 9. Bd3 d6 10. Qh5 g6
2026 Tata Steel India Blitz - Round 15.5 - So, Wesley - 1/2-1/2 - Erigaisi Arjun - G75 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Nd5 7. Bd2 Nxc3 8. bxc3 Bf8 9. Bd3 Na6 10. O-O Nc5
FIDE Grand Swiss 2025 – Round 7 – Nigmatov Ortik – 0-1 – Chigaev Maksim – G386 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Nd5 7. Qg4 Kf8 8. Qg3 Nc6 9. Nxc6 bxc6 10. Bd2 Qa5
FIDE World Blitz Championship 2025 – Round 14 – Nepomniachtchi Ian – 1/2-1/2 – Lu Shanglei – G266 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Nd5 7. Qg4 Kf8 8. a3 h5 9. Qf3 Bxc3+ 10. bxc3 Qc7
FIDE World Blitz Championship 2025 – Round 18 – Duda Jan-Krzysztof – 1/2-1/2 – Lu Shanglei – G348 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Nd5 7. Qg4 Kf8 8. Bd2 h5 9. Qe4 d6 10. exd6 Nxc3
SportAccord Blitz Men 2013 – Round 5.1 – Leko, Peter – 0-1 – Aronian, Levon – G31 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Nd5 7. Bd2 Bxc3 8. bxc3 O-O 9. c4 Ne7 10. Bd3 Ng6
World Blitz 2018 – Round 3.9 – Savchenko, Boris – 0-1 – Jobava, Baadur – G204 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Nd5 7. Qg4 Kf8 8. Bd2 h5 9. Qg3 Nc6 10. Nxc6 bxc6
World Blitz 2018 – Round 7.2 – Firouzja, Alireza – 1-0 – Jobava, Baadur – G402 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Nd5 7. Bd2 Bxc3 8. bxc3 O-O 9. Bd3 d6 10. exd6 Qxd6
World Blitz 2023 – Round 17.4 – Vachier-Lagrave, Maxime – 1/2-1/2 – Erigaisi Arjun – G983 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Nd5 7. Qg4 Kf8 8. Bd2 h5 9. Qe4 d6 10. Rd1 dxe5
World Blitz 2023 – Round 7.13 – Najer, Evgeniy – 0-1 – Jobava, Baadur – G385 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Nd5 7. Bd2 Nxc3 8. bxc3 Be7 9. Qg4 Kf8 10. Bd3 Na6
World Blitz 2023 – Round 9.9 – Vasquez Schroeder, Rodrigo – 0-1 – Erigaisi Arjun – G552 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Nd5 7. Bd2 Nxc3 8. bxc3 Bf8 9. Bd3 Na6 10. O-O Nc5

B40u — Pin Koch Variation

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Bb4 6.e5

Les coups candidats

6…Nd5 — 78.3% (2046 parties)

Ambassadeurs : Bryntse, Arne (19x), Serrano Pertinez, Miquel (13x), Machin Arbelo, Pedro Alexis (12x), Reede, Arvo (10x), Jobava, Baadur (10x), Dimitrijevic, Darko (9x), Plachetka, Jan (8x), Kaunzinger, Albert (8x)

6…Ne4 — 14.5% (378 parties)

Ambassadeurs : Drill, Frank (6x), Klingen, Mary (3x), Stuart, E Leslie (3x), Unzicker, Wolfgang (2x), Strom, Alex (2x), Palmiotto, Fiorentino (2x), Shianovsky, Vladislav I (2x), Korelov, Alexander P (2x)

6…Qc7 — 4.1% (107 parties)

Ambassadeurs : Lehmann, Horst (3x), Hughes, Dave (3x), Lopez Samon, Yurima (3x), Bahry, J. (2x), Mutschler, Roland (2x), Perrusset Didier (2x), Buchmann, Hans-Peter (2x), Farkas, Lajos (2x)

6…Bxc3+ — 1.6% (43 parties)

Ambassadeurs : Ostersen, Kjeld (2x), Rossetti, Mario (2x), Multala, Anton (1x), Eriksson Lasse (1x), Aaltio, Erkki (1x), Kuro, Timo (1x), Schneider, Hans (1x), Hoffmann, Gerfried (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6…Nd5	6…Ne4	6…Qc7	6…Bxc3+
<1800	88	75%	11%	5%	7%
1800-2200	989	76%	17%	5%	1%
2200-2600	750	88%	10%	1%	0%
2600+	20	100%	—	—	—

Évolution par décennie (% des parties)

Décennie	N parties	6…Nd5	6…Ne4	6…Qc7	6…Bxc3+
1880s	1	100%	—	—	—
1930s	12	50%	42%	—	—
1940s	14	79%	14%	7%	—
1950s	18	56%	39%	—	—
1960s	52	60%	38%	—	2%
1970s	72	74%	21%	—	3%
1980s	292	89%	10%	0%	1%
1990s	625	76%	17%	4%	2%
2000s	780	75%	13%	8%	2%
2010s	620	81%	14%	3%	1%
2020s	127	92%	2%	2%	2%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6…Nd5	81%	92%	▲ +11.5%
6…Ne4	14%	2%	▼ -11.5%
6…Qc7	3%	2%	-0.2%
6…Bxc3+	1%	2%	▲ +1.2%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 1 partie
Kasparov, Garry — 1 partie

Parties historiques

6…Nd5 — 78.3% (2046 parties)

1886 — Pollock, William vs Mason, James — 0-1 — London ENG
1930 — Walkerling vs Janssen Laliena, Daniel — 1-0 — cr.
1935 — Schoenmann, Wilhelm vs Elstner, Rudolf — 1-0 — Aachen GER
1936 — Kaila O vs Muhring, Willem Jan — 1-0 — Schack-olympiaden i Munchen
1936 — Kaila, Osmo vs Muhring, Willem Jan — 1-0 — Munich GER

6…Ne4 — 14.5% (378 parties)

1935 — ? vs Pitschak, Rudolf — 1/2-1/2 — Konstantinsbad
1936 — Belson, John Harold vs Opsahl, Haakon — 1-0 — Toronto CAN
1938 — Solmanis, Zigfrids vs Skillicorn, William — 1-0 — Margate ENG
1938 — Acebey Michel, Veroska vs Becker, Albert — 1-0 — Bad Oeynhausen GER
1939 — Szabo, Ladislav vs Mikenas, Vladas — 1-0 — Kemeri / Riga

6…Qc7 — 4.1% (107 parties)

1945 — Vinogradov, Kirill B vs Moskalev, Vassily — 1-0 — Leningrad RUS
1988 — Truman Christiana G. vs Akinwunmi Adebayo Richards — 1/2-1/2 — corr GB grand open
1990 — Sieberg, Rolf vs Bahry, J. — 1-0 — Dortmund open
1990 — Marggraff, B. vs Bahry, J. — 1-0 — Dortmund open
1993 — Klein Douwel, John vs Mutschler, Roland — 1/2-1/2 — Hamburg ch-GER U20

6…Bxc3+ — 1.6% (43 parties)

1963 — Multala, Anton vs Eriksson Lasse — 1-0 — ?
1973 — Lehmann, Wayne Joachim vs Reinhardt, H. — 1-0 — corr DDR/M
1975 — Koppe, Carson vs Prietzsch — 1-0 — corr DDR-PZ
1983 — Schneider, Hans vs Hoffmann, Gerfried — 1-0 — CIF FT-85-619B
1989 — Aaltio, Erkki vs Kuro, Timo — 1-0 — corr SF

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