B27r — Sicilian: Accelerated Pterodactyl, 4.dxc5 Qa5+ 5.c3

1.e4 c5 2.Nf3 g6 3.d4 Bg7 4.dxc5 Qa5+ 5.c3 Qxc5 * ○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

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Plans. Be3 (Fou actif (mobilité 7), Développer c1 — 52 % des parties) ; Na3 (Développer b1 — 43 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

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Plans. ...Qc7 (Prépare O-O-O — 47 % des parties) ; ...Nf6 (Développer g8 — 21 % des parties) ; ...d6 (Libérer Bc8 — 10 % des parties) ; ...Qa5 (Contrôle diagonale a5-e1, Prépare O-O-O — 9 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● b2→c3	● f7→g6, h7→g6
Passés	—	—
Majorité	● aile dame 3v2	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● d4 (3v2), ● d5 (2v1), ● g5 (2v1)	● e5 (2v1)
Cases faibles	—	—
Centre	● d4 (3v2), ● d5 (2v1)	● e5 (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)
Bg7		● Bg7 Actif (mob. 6)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	5 (● b1, ● c1, ● f1, ● a1, ● h1)	5 (● b8, ● g8, ● 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	mobile
Ruptures	—	● …d7-d5, ● …f7-f5

Partie
1905 Ostende – Round 5 – D Marco, Gianni – 1/2-1/2 – Blackburne, Joseph – G18 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qc7 5. c3 Qxc5 6. Be3 Qc7 7. Qb3 Nc6 8. Na3 Nf6 9. Bd3 O-O 10. Nb5 Qb8
1930 Swinemuende – Round 7 – Pahl, Kurt – 0-1 – Wagner, Heinrich – G28 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. c3 Qc7 5. dxc5 Qxc5 6. Be3 Qc7 7. Nd4 Nc6 8. Be2 Nf6 9. f3 O-O 10. O-O d5
1950 HUN Ch 05th – Round 2 – Benko, Pal – 1/2-1/2 – Bakonyi, Elek – G4 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. c3 Qxc5 6. Be3 Qc7 7. Na3 Bxc3+ 8. bxc3 Qxc3+ 9. Nd2 Qxa3 10. Rc1 Nc6
1959 HUN Ch 15th – Round 11 – Szily, Jozsef – 0-1 – Forintos, Gyozo V – G36 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. c3 Qxc5 6. Be3 Qa5 7. Nbd2 Nf6 8. Nd4 O-O 9. Be2 Nc6 10. O-O d5
1959 HUN Ch 15th – Round 13 – Szily, Jozsef – 0-1 – Haag, Ervin – G46 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. c3 Qxc5 6. Be3 Qc7 7. Na3 Nc6 8. Nd4 Nf6 9. f3 O-O 10. Qd2 d5
1959 HUN Ch Budapest HUN – Round 17 – Szily, Jozsef – 1/2-1/2 – Hevizi, Laszlo Dr – G67 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. c3 Qxc5 6. Be3 Qc7 7. Na3 Nc6 8. Nb5 Qd8 9. h3 d6 10. Bc4 a6
1960 Leipzig olm fin-B – Round 3 – Rantanen, Yrjo A. – 0-1 – Nilsson, Zandor – G38 1. Nf3 g6 2. d4 Bg7 3. e4 c5 4. c3 Qc7 5. dxc5 Qxc5 6. Be3 Qc7 7. Bd3 Nf6 8. h3 O-O 9. O-O d5 10. Nbd2 Nc6
1960 Paignton Premier 10th – Round 1 – Pratten, Wilfred Henry – 0-1 – Mardle, Denis – G1 1. d4 g6 2. e4 Bg7 3. Nf3 c5 4. c3 Qb6 5. dxc5 Qxc5 6. Be3 Qc7 7. Qb3 Nf6 8. Na3 Nc6 9. Nb5 Qb8 10. O-O-O O-O
1961 GBR Ch 48th – Round 1.13 – Cafferty, Bernard – 1/2-1/2 – Gibbs, Peter Campbell – G3 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. c3 Qxc5 6. Be3 Qc7 7. Bd3 Nc6 8. O-O Nf6 9. Nbd2 O-O 10. Qe2 d5
1961 Maroczy Memorial Budapest HUN – Round 1 – Drimer, Dolfi – 1/2-1/2 – Haag, Ervin – G37 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. c3 Qxc5 6. Be3 Qc7 7. Bd4 Nf6 8. e5 Ng4 9. e6 f6 10. h3 Nh6
1961 Oberhausen etc – Round 1 – Troeger, Paul – 1/2-1/2 – Jansa, Vlastimil – G7 1. d4 c5 2. c3 g6 3. Nf3 Bg7 4. e4 Qc7 5. dxc5 Qxc5 6. Be3 Qc7 7. h3 Nc6 8. Na3 Nf6 9. Bc4 O-O 10. Nb5 Qb8
1962 Whitby ch-BCF – Round 10 – Baxter, Roger – 1/2-1/2 – Gibbs, Peter Campbell – G101 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. c3 Qxc5 6. Be3 Qc7 7. Be2 Nf6 8. Qc2 Nc6 9. c4 Nxe4 10. O-O f5
1963 Budapest Ch – Round 1 – Cs. Kovacs, Laszlo – 0-1 – Gasztonyi, Endre – G29 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. c3 Qxc5 6. Be3 Qc7 7. Bd4 f6 8. Na3 Nc6 9. Bc4 Nxd4 10. Qxd4 a6
1964 Zagreb – Round 12 – Paoli, Enrico – 0-1 – Parma, Bruno – G67 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. c3 Qxc5 6. Be3 Qc7 7. Na3 Nc6 8. Nb5 Qd8 9. Qb3 d6 10. Ng5 Nh6
1965 Asztalos Memorial 8th – Round 4 – Paoli, Enrico – 0-1 – Gasztonyi, Endre – G25 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. c3 Qxc5 6. Be3 Qa5 7. Nbd2 d6 8. Qb3 Nf6 9. Bc4 O-O 10. h3 Nbd7
1965 Capablanca Memorial – Round 1 – Robatsch, Karl – 1/2-1/2 – Bilek, Istvan – G4 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. c3 Qxc5 6. Na3 Nf6 7. Nb5 b6 8. e5 Ng4 9. Qd4 Nxe5 10. Nxe5 Qxe5+
1966 La Habana olm fin-A – Round 13 – Drimer, Dolfi – 1-0 – Forintos, Gyozo V – G244 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. c3 Qxc5 6. Be3 Qc7 7. Bd4 e5 8. Be3 Nf6 9. Na3 O-O 10. Nb5 Qc6
1966 La Habana olm fin-C – Round 11 – Papapostolou, Christ. – 0-1 – Romani, Elio – G71 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. c3 Qxc5 6. Be3 Qc7 7. Nd4 Nc6 8. Na3 Nf6 9. f3 a6 10. Qd2 b5
1966 Titovo Uzice – Round 1 – Matanovic, Aleksandar – 1/2-1/2 – Nikolic, Stanimir – G32 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. c3 Qxc5 6. Be3 Qc7 7. Bd3 d6 8. O-O Nf6 9. h3 O-O 10. Na3 a6
1967 ISR Ch – Round 5 – Stepak, Yedael – 0-1 – Bubis, Leonidas – G25 1. e4 g6 2. d4 Bg7 3. Nf3 c5 4. dxc5 Qa5+ 5. c3 Qxc5 6. Be3 Qc7 7. Nbd2 Nc6 8. Bc4 Nf6 9. h3 d6 10. a4 O-O
1968 HUN-URS – Round ? – Sergievsky, Vladimir D – 1-0 – Forintos, Gyozo V – G8 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. c3 Qxc5 6. Be3 Qc7 7. Nbd2 Nf6 8. h3 O-O 9. Bd3 Nc6 10. O-O d5
1969 Luhacovice – Round 4 – Beni, Alfred – 0-1 – Mista, Ladislav – G40 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. c3 Qxc5 6. Be3 Qc7 7. Na3 Nc6 8. Nd4 Nf6 9. Ndb5 Qb8 10. f3 O-O
76. Tata Steel Masters 2014 – Round 2.6 – Dominguez Perez, Leinier – 1/2-1/2 – Van Wely, Loek – G12 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. c3 Qxc5 6. Na3 Qa5 7. Qd5 Qxd5 8. exd5 Nf6 9. d6 e6 10. Nb5 Na6
Moscow Superblitz 2006 – Round 12 – Malakhov, Vladimir – 0-1 – Savchenko, Boris – G28 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. c3 Qxc5 6. Na3 Nf6 7. Nb5 Ng4 8. Nfd4 d6 9. h3 Nxf2 10. Kxf2 e5
Olympiad 2002 – Round 13 – Mitkov, Nikola – 1/2-1/2 – Eingorn, Vereslav S – G455 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. c3 Qxc5 6. Na3 d6 7. Nb5 a6 8. Be3 Qc6 9. Na7 Qc7 10. Nxc8 Qxc8

B27r — Accelerated Pterodactyl (1905)

1.e4 c5 2.Nf3 g6 3.d4 Bg7 4.dxc5 Qa5+ 5.c3 Qxc5

Les coups candidats

6.Be3 — 52.5% (715 parties)

Ambassadeurs : Jakab, Attila (9x), Forintos, Gyozo V (4x), Szily, Jozsef (3x), Paoli, Enrico (3x), Tonoli, Walter (3x), Markowski, Tomasz (3x), Szarvas, Sandor (3x), Haag, Ervin (3x)

6.Na3 — 42.6% (580 parties)

Ambassadeurs : Jakab, Attila (16x), Malakhov, Vladimir (6x), Kaposztas, Miklos (6x), Pirs, Matjaz (6x), Wojtkiewicz, Aleksander (4x), Rajlich, Iweta (4x), Aguilar, Luis Miguel (4x), Savchenko, Boris (3x)

6.Bd3 — 3.6% (49 parties)

Ambassadeurs : Burnett, Walter (2x), Dolenec, Dragutin (1x), Arnstam, Knut (1x), Aditya Pola (1x), Romanishin, Oleg M (1x), Van der Mije Nicolau, Alexandra (1x), Caldwell, Susan Linda (1x), Grichkevitch, Gilles (1x)

6.Be2 — 0.4% (5 parties)

Ambassadeurs : Kiselev, Vladimir (1x), Baryshpolets, Andrey (1x), Babic, Marijana (1x), Gaponenko, Inna (1x), Isik, Mehmet (1x), Gulesci, Kadri (1x), Ocido, Michael (1x), Gaticales, Martin (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6.Be3	6.Na3	6.Bd3	6.Be2
<1800	71	65%	28%	4%	1%
1800-2200	524	53%	42%	3%	1%
2200-2600	631	45%	49%	4%	0%
2600+	8	25%	75%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	6.Be3	6.Na3	6.Bd3	6.Be2
1950s	6	100%	—	—	—
1960s	21	86%	10%	5%	—
1970s	25	92%	—	8%	—
1980s	29	86%	—	7%	—
1990s	154	91%	1%	6%	—
2000s	487	53%	43%	4%	0%
2010s	539	39%	57%	3%	0%
2020s	101	36%	60%	3%	1%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6.Be3	39%	36%	▼ -3.3%
6.Na3	57%	60%	▲ +3.3%
6.Bd3	3%	3%	+0.4%
6.Be2	0%	1%	▲ +0.6%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 1 partie

Parties historiques

6.Be3 — 52.5% (715 parties)

1950 — Richter, Kurt vs Hopp M — 1-0 — ?
1950 — Benko, Pal vs Bakonyi, Elek — 1/2-1/2 — Budapest HUN
1951 — Kapu, Jeno vs Bakonyi, Elek — 0-1 — Hungary ch
1959 — Szily, Jozsef vs Forintos, Gyozo V — 0-1 — Budapest HUN
1959 — Szily, Jozsef vs Haag, Ervin — 0-1 — Budapest HUN

6.Na3 — 42.6% (580 parties)

1965 — Robatsch, Karl vs Bak, Istvan — 1/2-1/2 — Havana CUB
1965 — Pavlov, Mircea-Sergiu-Aurelian vs Partos, Charles — 1/2-1/2 — Bucharest ROU
1994 — Sutovsky, Emil vs Malakhov, Vladimir — 1/2-1/2 — Groningen open
2000 — Bruzon Batista, Lazaro vs Malakhov, Valentyn — 1-0 — Erevan ARM
2000 — Balogh, Csaba vs Kaposztas, Miklos — 1/2-1/2 — HUN

6.Bd3 — 3.6% (49 parties)

1968 — Dolenec, Dragutin vs Arnstam, Knut — 1-0 — Halmstad
1974 — Buljovcic, Ivan vs Tal, Mikhail — 0-1 — Novi Sad SRB
1977 — Aditya Pola vs Romanishin, Oleg M — 0-1 — Tallinn EST
1982 — Van der Mije Nicolau, Alexandra vs Caldwell, Susan Linda — 1/2-1/2 — Dortmund GER
1988 — Grichkevitch, Gilles vs Chomet, Natacha — 0-1 — Zoo-Chess Max

6.Be2 — 0.4% (5 parties)

2002 — Kiselev, Vladimir vs Baryshpolets, Andrey — 1-0 — ?
2006 — Babic, Marijana vs Gaponenko, Inna — 0-1 — Zlatibor SCG
2015 — Ocido, Michael vs Gaticales, Martin — 0-1 — Penang MAS
2018 — Isik, Mehmet vs Gulesci, Kadri — 0-1 — Goynuk TUR
2024 — Shakhvorostov, Alexey vs Volcansek, Robert — 0-1 — ?

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