Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	—
Passés	—	—
Majorité	● aile dame 3v2	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● d4 (2v1), ● d5 (2v0)	● e5 (2v0)
Cases faibles	—	—
Centre	● d4 (2v1), ● d5 (2v0)	● e5 (2v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● c

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bf1	● Bf1 Non développé (mob. 3)
Bc8		● Bc8 Non développé (mob. 0)
Bf8		● Bf8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	5 (● b1, ● c1, ● f1, ● a1, ● h1)	5 (● g8, ● 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	—	● …d7-d5, ● …f7-f5

B32g — Sicilian: Flohr, 5.Nb5

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Qc7 5.Nb5 * ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. c4 (Frapper le centre adverse — 72 % des parties) ; Bd3 (Développer f1 — 14 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Qb8 (Prépare O-O-O — 98 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1936 Moskou – Round 1 – Riumin, Nikolai – 0-1 – Flohr, Salo – G20 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. c4 Nf6 7. N1c3 a6 8. Na3 e6 9. Nc2 Qc7 10. f4 d6
1936 Nottingham – Round 1 – Alexander, Conol Hugh – 1-0 – Flohr, Salo – G40 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. c4 Nf6 7. N1c3 e6 8. Be3 a6 9. Nd4 Bb4 10. Bd3 Ne5
1954 Anderson-Fuster m – Round 6 – Anderson, Frank Ross – 1-0 – Fuster, Geza – G6 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. c4 Nf6 7. N5c3 e6 8. Be3 b6 9. Be2 Bc5 10. Qd2 Qe5
1957 URS Ch, semi final – Round 2 – Boleslavsky, Isaac – 1/2-1/2 – Bastrikov, Georgy – G18 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. c4 Nf6 7. N5c3 e6 8. Be2 Bc5 9. Nd2 O-O 10. O-O Rd8
1957 URS Ch, semi final – Round 4 – Bonch-Osmolovsky, Mikhail – 1/2-1/2 – Bastrikov, Georgy – G38 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. c4 Nf6 7. N5c3 e6 8. Be3 b6 9. Be2 Bc5 10. Qd2 Bb7
1958 Portoroz Interzonal – Round 15 – Matanovic, Aleksandar – 1-0 – Fuster, Geza – G144 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. c4 Nf6 7. N5c3 e6 8. Be3 b6 9. Qd2 Bb4 10. Bd3 Ne5
1960 CSR Ch – Round 3 – Jansa, Vlastimil – 1/2-1/2 – Ujtelky, Maximilian – G25 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. c4 a6 7. N5c3 e6 8. Be2 Bd6 9. g3 Nge7 10. Be3 b6
1960 Leningrad ch-URS – Round 16 – Bagirov, Vladimir – 1-0 – Korchnoi, Viktor – G151 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. g3 a6 7. N5c3 e6 8. Bg2 Nf6 9. O-O Be7 10. b3 O-O
1960 Moscow CCCT – Round 11 – Bagirov, Vladimir – 1-0 – Polugaevsky, Lev – G61 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. c4 Nf6 7. N5c3 e6 8. Be3 Be7 9. Be2 O-O 10. O-O Rd8
1961 Marianske Lazne zt – Round 14 – Olafsson, Fridrik – 1/2-1/2 – Blom, Kaj – G99 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. c4 Nf6 7. N5c3 e6 8. f4 d6 9. Be2 Be7 10. O-O O-O
1961 Moskou – Round 1 – Boleslavsky, I. – 1/2-1/2 – Kortchnoi, V. – G74 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. c4 Nf6 7. N5c3 e6 8. f4 d6 9. Be2 b6 10. O-O Bb7
1961 Oberhausen etc – Round 3 – Gligorić, Svetozar – 1/2-1/2 – Perez Perez, Francisco Jose – G93 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. c4 Nf6 7. N5c3 e6 8. f4 d6 9. Be2 Be7 10. O-O O-O
1961 Oberhausen etc – Round 5 – Pesch, Werner – 1/2-1/2 – Polugaevsky, Lev – G134 1. e4 c5 2. Ne2 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. c4 Nf6 7. N5c3 e6 8. f4 d6 9. Be3 Be7 10. Be2 O-O
1961 URS-ch29 sf Novgorod – Round 1 – Smits, Anatolijs – 1/2-1/2 – Suetin, Alexey S – G3 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb6 6. c4 e6 7. g3 a6 8. N5c3 Nf6 9. f4 d6 10. Be3 Be7
1962 Erevan ch-URS – Round 1 – Mnatsakanian, Eduard A – 1/2-1/2 – Mikenas, Vladas – G112 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. c4 a6 7. N5c3 e6 8. Be3 Nf6 9. Be2 b5 10. cxb5 axb5
1963 URS Ch sf – Round ? – Lebedev, Boris – 1/2-1/2 – Lein, Anatoly – G11 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. c4 Nf6 7. N1c3 a6 8. Na3 e6 9. Nc2 b5 10. Bd3 Ne5
1966 Panamerican – Round ? – Garcia Martinez, Silvino – 1/2-1/2 – Cuellar Gacharna, Miguel – G86 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. c4 Nf6 7. N5c3 e6 8. Be3 b6 9. Be2 Bc5 10. Qd2 Bb7
1966 Panamerican – Round 1 – Garcia Martinez, Silvino – 1-0 – Füster, Géza – G36 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. c4 Nf6 7. N5c3 e6 8. Be2 Bc5 9. O-O h5 10. g3 h4
1967 Reggio Emilia 6768 10th – Round 3 – Jahr, Ulrich – 0-1 – Kurajica, Bojan – G9 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. c4 a6 7. N5c3 Nf6 8. Be3 e6 9. f4 d6 10. Be2 Be7
1968 YUG Ch 23th – Round 13 – Ivkovic, Dusan – 0-1 – Matulovic, Milan – G69 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. c4 Nf6 7. f3 e6 8. Be3 b6 9. Qd2 a6 10. Nd4 Ne5
1969 IBM – Round 9 – Kavalek, Lubomir – 0-1 – Damjanovic, Marko – G34 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. c4 Nf6 7. N5c3 g6 8. Be2 Bg7 9. Be3 d6 10. O-O Bd7
1969 San Juan – Round 10 – Kavalek, Lubomir – 1-0 – Damjanovic, Mato – G69 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. c4 e6 7. f4 a6 8. N5c3 Qa7 9. a3 Bc5 10. Bd3 d6
1969 San Juan – Round 7 – Byrne, Robert E – 1/2-1/2 – Damjanovic, Mato – G47 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. c4 e6 7. Be3 Nf6 8. N5c3 Be7 9. Be2 O-O 10. O-O Rd8
1974 Manila – Round 13 – Ljubojevic, Ljubomir – 1-0 – Vasiukov, Evgeni – G99 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. a4 Nf6 7. N1c3 e6 8. Bd3 Bc5 9. O-O b6 10. Bg5 Ne5
36. Olympiad 2004 – Round 11 – Delchev, Aleksander – 1-0 – Perunovic, Milos – G398 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. Bd3 a6 7. N5c3 e6 8. Be3 b5 9. f4 d6 10. Nd2 Nf6
Biel Interzonal 1993 – Round 5 – Illescas Cordoba, Miguel – 0-1 – Portisch, Lajos – G121 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. c4 Nf6 7. N5c3 b6 8. Be2 Bb7 9. O-O e6 10. Be3 Bc5
Tilburg Fontys 1998 – Round 1 – Anand, Viswanathan – 1-0 – Lautier, Joel – G2 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nb5 Qb8 6. c4 Nf6 7. N5c3 e6 8. Be2 Be7 9. Be3 O-O 10. O-O Rd8

B32g — Flohr (1936)

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Qc7 5.Nb5

Les coups candidats

5…Qb8 — 98.2% (670 parties)

Ambassadeurs : Peschardt, Soren (11x), Kurajica, Bojan (10x), Kogan, Arthur (9x), Horvath, Jozsef (7x), Horvath, Julia (7x), Barlov, Dragan (6x), Vasiukov, Evgeni (5x), Damjanovic, Mato (5x)

5…Qd8 — 0.7% (5 parties)

Ambassadeurs : Cuijpers, Frans Andre (1x), Antunac, Goran (1x), Cabrilo, Goran (1x), Vujakovic, Branko (1x), Sieber, Stephan (1x), Helm, Leonie (1x), Kabisch, Thilo (1x), Reefat, Bin-Sattar (1x)

5…Qb6 — 0.4% (3 parties)

Ambassadeurs : Smits, Anatolijs (1x), Suetin, Alexey S (1x), Palacian Campodarve, Javier (1x), Garcia Bueno, Juan Pablo (1x), Niesswohl, Werner (1x), Kargl, Leopold (1x)

5…Qa5+ — 0.4% (3 parties)

Ambassadeurs : Todorovic, Jovan (1x), Rajkovic, Dusan (1x), De Lucia, Alfredo (1x), Orlacchio, Giorgio (1x), Bisigirskas, Paulius (1x), Voropajevas, Nikolajus (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	5…Qb8	5…Qd8	5…Qb6	5…Qa5+
<1800	10	80%	—	—	20%
1800-2200	160	98%	1%	1%	—
2200-2600	420	99%	1%	—	0%
2600+	10	100%	—	—	—

Évolution par décennie (% des parties)

Décennie	N parties	5…Qb8	5…Qd8	5…Qb6	5…Qa5+
1950s	11	100%	—	—	—
1960s	23	96%	—	4%	—
1970s	44	98%	2%	—	—
1980s	36	97%	3%	—	—
1990s	223	99%	0%	0%	—
2000s	258	99%	0%	0%	0%
2010s	81	95%	1%	—	2%
2020s	6	100%	—	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
5…Qb8	95%	100%	▲ +4.9%
5…Qd8	1%	0%	▼ -1.2%
5…Qb6	0%	0%	+0.0%
5…Qa5+	2%	0%	▼ -2.5%

Joueurs célèbres

Champions du monde dans cette position

Karpov, Anatoly — 1 partie
Anand, Viswanathan — 1 partie

Parties historiques

5…Qb8 — 98.2% (670 parties)

1954 — Anderson, Frank Ross vs Fuster, Geza — 1-0 — Toronto CAN
1957 — Kaminskij, Sergej vs Bastrikov, Georgy — 0-1 — Krasnodar RUS
1957 — Bonch-Osmolovsky, Mikhail vs Bastrikov, Georgy — 1/2-1/2 — Kiev UKR
1957 — Kotkov, Yuri M vs Gosin, M. — 1-0 — Krasnodar RUS
1957 — Boleslavsky, Isaac vs Bastrikov, Georgy — 1/2-1/2 — Kiev UKR

5…Qd8 — 0.7% (5 parties)

1974 — Cuijpers, Frans Andre vs Antunac, Goran — 1-0 — Hoogovens-B Wijk aan Zee NED
1989 — Cabrilo, Goran vs Vujakovic, Branko — 1-0 — Yugoslavia
1998 — Sieber, Stephan vs Helm, Leonie — 1/2-1/2 — GER chT b20 Erfurt
2002 — Kabisch, Thilo vs Reefat, Bin-Sattar — 1-0 — Dresden GER
2013 — Martins, Karin vs Hargreaves, John-Richard — 1-0 — ?

5…Qb6 — 0.4% (3 parties)

1961 — Smits, Anatolijs vs Suetin, Alexey S — 1/2-1/2 — Novgorod RUS
1995 — Palacian Campodarve, Javier vs Garcia Bueno, Juan Pablo — 1-0 — Zaragoza
2003 — Niesswohl, Werner vs Kargl, Leopold — 0-1 — Vienna AUT

5…Qa5+ — 0.4% (3 parties)

2007 — Todorovic, Jovan vs Rajkovic, Dusan — 1-0 — Belgrade SER
2010 — De Lucia, Alfredo vs Orlacchio, Giorgio — 1-0 — Foligno ITA
2012 — Bisigirskas, Paulius vs Voropajevas, Nikolajus — 1-0 — Panevezys LTU

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