C78b — Spanish: Moeller Defence

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Bc5 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : paire de fous.
Faiblesses adverses : Bc8 enfermé, roi noir au centre.
Problèmes : Bc1 enfermé, 3 pièces non développées (B1, C1, A1).
Plans :
● Nbd2 — Développer Nb1
● d3 — Libérer Bc1
● h3 — Empêcher ...Bg4
● c3 — Préparer d4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte b4, case forte d4, Bc5 actif, paire de fous.
Faiblesses adverses : Bc1 enfermé, pawn e4 en prise.
Problèmes : roi au centre, Bc8 enfermé, 3 pièces non développées (C8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...d6 — Libérer Bc8
● ...Bg4 — Clouer Nf3
● ...d5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

C78b — Moeller Defence

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Bc5

Eval: [+0.50]

Les coups candidats

6.c3 — 67.8% (3708 parties) →

Ambassadeurs : Lanin, Boris Dr (47x), Onischuk, Alexander (46x), Stefanova, Antoaneta (34x), Malaniuk, Vladimir P (28x), Marcotulli, Giancarlo (27x), Hector, Jonny (24x), Adams, Michael (22x), Booij, Robert E. (20x)

6.d3 — 11.7% (640 parties)

Ambassadeurs : Malaniuk, Vladimir P (6x), Kloos-Kämink, Marlies (6x), Loiseau, Quentin (5x), Zondervan, Frans (5x), Martinovsky, Eugene (3x), Kukacka, Martin (3x), Grischuk, Alexander (3x), Gupta, Abhijeet (3x)

6.Nxe5 — 8.3% (454 parties) →

Ambassadeurs : Alekhine, Alexander (7x), Grazinys, Vidmantas (7x), Izeta Txabarri, Felix (4x), Fernandez Garcia, Jose Luis(2) (4x), Marcotulli, Giancarlo (3x), Gross, David (3x), Kuuse, Klaus (3x), Garus, Edward (3x)

6.Re1 — 4.7% (258 parties)

Ambassadeurs : Mont-Reynaud, Jordy (2x), Wulff, Michaela (2x), Simlova, Jana (2x), Karner, Silvia (2x), Liao, Juan Jose (2x), Casserly, Camille (2x), Antoli Royo, Joaquin Miguel (2x), Alexander Gregor (2x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6.c3	6.d3	6.Nxe5	6.Re1
<1800	243	57%	15%	12%	9%
1800-2200	1217	72%	11%	8%	4%
2200-2600	2079	77%	10%	6%	2%
2600+	349	82%	6%	2%	0%

Évolution par décennie (% des parties)

Décennie	N parties	6.c3	6.d3	6.Nxe5	6.Re1
1860s	1	100%	—	—	—
1880s	2	—	—	—	—
1890s	2	—	50%	—	—
1900s	17	65%	18%	18%	—
1910s	8	62%	—	25%	—
1920s	32	38%	12%	41%	6%
1930s	52	73%	6%	13%	2%
1940s	29	62%	—	31%	—
1950s	34	71%	3%	24%	3%
1960s	45	67%	2%	31%	—
1970s	76	71%	1%	14%	1%
1980s	97	49%	13%	18%	5%
1990s	721	53%	16%	13%	8%
2000s	1672	67%	12%	8%	6%
2010s	1539	68%	13%	7%	4%
2020s	1139	81%	8%	3%	3%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6.c3	68%	81%	▲ +12.9%
6.d3	13%	8%	▼ -5.4%
6.Nxe5	7%	3%	▼ -3.9%
6.Re1	4%	3%	▼ -1.6%

Joueurs célèbres

Champions du monde dans cette position

Alekhine, Alexander — 10 parties
Anand, Viswanathan — 10 parties
Carlsen, Magnus — 8 parties
Hou, Yifan — 7 parties
Kramnik, Vladimir — 5 parties
Karpov, Anatoly — 4 parties
Ju, Wenjun — 2 parties
Gukesh D — 2 parties
Euwe, Max — 1 partie
Lasker, Emanuel — 1 partie
Tal, Mikhail — 1 partie
Kasparov, Garry — 1 partie

Parties historiques

6.c3 — 67.8% (3708 parties)

1864 — N Charvik Nandan vs Grimm, Adrian — 0-1 — Konstantinopel
1900 — Pillsbury, Harry vs Fazy — 1-0 — Paris FRA
1902 — Exner Victor vs Englund, Fritz — 1-0 — Hannover GER
1902 — Exner, Gyozo vs Englund, Carl Magnus — 1-0 — Hannover GER
1902 — Fahrni, Hans vs Moeller, Jorgen — 0-1 — Hannover GER

6.d3 — 11.7% (640 parties)

1891 — Kemeny, Emil vs Blackmar, Armand Edward — 1-0 — Skaneateles
1903 — Te Kolste, Jan Willem vs Loman, Rudolf — 1/2-1/2 — Hilversum NED
1906 — Przepiorka, Dawid vs Spielmann, Rudolf — 0-1 — Ostende
1908 — Gunsberg, Isidor vs Blake, Joseph — 1-0 — Tunbridge Wells
1928 — Maderna, Carlos vs Palau, Luis — 1-0 — Mar del Plata ARG

6.Nxe5 — 8.3% (454 parties)

1902 — Pillsbury, Harry vs England, Ethan — 1/2-1/2 — Hannover GER
1903 — Leonhardt, Paul vs Loman, Rudolf — 1-0 — Hilversum NED
1907 — Schories, Georg vs Spielmann, Rudolf — 1/2-1/2 — Ostende II
1910 — Konstantin Alekseyevich Vygodchikov vs Alekhine, Alexander — 0-1 — Correspondence game
1912 — Schories, Georg vs Michell, Reginald — 0-1 — Richmond

6.Re1 — 4.7% (258 parties)

1923 — JacksonCrakeEdwards vs Alekhine, Alexander — 0-1 — Hull
1928 — Hobson, F vs O'Hanlon, John — 0-1 — Dublin IRL
1938 — Pettersson, Willy vs Carlsson, Henrik 2002 — 1-0 — Stockholm SWE
1957 — Blackstone, John vs Jackens — 1-0 — San Jose, CA USA
1976 — Gruenfeld, Yehuda vs Regan, Kenneth — 1-0 — Caracas VEN

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● b7→a6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	—	● b4 (2v0), ● d4 (3v1)
Cases faibles	—	—
Centre	—	● d4 (3v1), ● e4 (1v0)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Ba4	● Ba4 Ok (mob. 3)
Bc5		● Bc5 Actif (mob. 10)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Clouages	● pawn f2	—
Non développées	3 (b1, c1, a1)	3 (c8, a8, h8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Roqué	● Au centre !
Droits de roque	—	O-O / O-O-O

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● c2-c3, ● d2-d3	● …d7-d6, ● …d7-d5

Partie
1903 It – Round 7 – Te Kolste, Jan Willem – 1/2-1/2 – Loman, Rudolf – G3 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. d3 d6 7. Be3 Ba7 8. Bxa7 Rxa7 9. Bxc6+ bxc6 10. d4 exd4
1906 Ostende – Round 1 – Przepiorka, Dawid – 0-1 – Spielmann, Rudolf – G29 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. d3 b5 7. Bb3 d6 8. Be3 Bg4 9. c3 O-O 10. Nbd2 Qe7
1908 BCF Ch 5th – Round 8 – Gunsberg, Isidor – 1-0 – Blake, Joseph – G30 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. d3 b5 7. Bb3 d6 8. c3 Bg4 9. Be3 O-O 10. h3 Be6
1910 DSB-17.Kongress – Round 14 – Forgacs, Leo – 1-0 – Alekhine, Alexander – G89 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. Nc3 b5 7. Bb3 d6 8. Ne2 Bg4 9. c3 d5 10. exd5 e4
1928 Mar del Plata – Round 4 – Maderna, Carlos – 1-0 – Palau, Luis – G18 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. d3 b5 7. Bb3 d6 8. Nbd2 Na5 9. c3 Nxb3 10. axb3 O-O
1928 The Hague – Round 14 – Becker, Albert – 1-0 – Chéron, André – G11 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. d3 d6 7. Be3 Ba7 8. Nc3 O-O 9. h3 Ne7 10. Bb3 Be6
1929 Karlsbad – Round 1 – Bogoljubow, Efim – 1/2-1/2 – Vidmar Milan – G121 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. d3 d6 7. Bxc6+ bxc6 8. Be3 Bxe3 9. fxe3 O-O 10. Nbd2 Qe7
1932 Cambridge Premier – Round 3 – Yates, Frederic D – 1-0 – Milner Barry, Philip – G8 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. Nc3 d6 7. h3 Bd7 8. d3 Nd4 9. Nxd4 Bxd4 10. Bb3 c6
1934 Leningrad ch-URS – Round 1 – Bohatyrchuk, Fedir Parfenovych – 0-1 – Savitsky, Leonid – G128 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. d3 d6 7. d4 exd4 8. Nxd4 Bd7 9. Nxc6 bxc6 10. Nc3 Ng4
30. ECC Open 2014 – Round 5.3 – Mamedov, Nidjat – 1-0 – Bartel, Mateusz – G107 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. Nc3 b5 7. Bb3 d6 8. Nd5 Bg4 9. c3 Nxe4 10. d4 Bxd4
42. Olympiad 2016 – Round 1.28 – Elarabi, Abobker Mohamed – 0-1 – Beliavsky, Alexander G – G42 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. d3 d6 7. c3 Ba7 8. Be3 Bxe3 9. Bxc6+ bxc6 10. fxe3 O-O
43. Olympiad 2018 – Round 7.8 – Almasi, Zoltan – 1/2-1/2 – Fressinet, Laurent – G491 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. Bxc6 dxc6 7. d3 Qe7 8. Nbd2 Bg4 9. Nc4 Nd7 10. h3 Bh5
5. Norway Chess 2017 – Round 2.3 – Anand, Viswanathan – 0-1 – Kramnik, Vladimir – G8 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. Nc3 b5 7. Bb3 O-O 8. Nd5 Nxe4 9. d3 Nf6 10. Bg5 Be7
GCT Blitz Paris 2019 – Round 11.4 – Nakamura, Hikaru – 1-0 – Caruana, Fabiano – G54 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. d3 b5 7. Bb3 O-O 8. a4 b4 9. a5 d6 10. h3 Be6
GpB 2004 – Round 1 – Kramnik, Vladimir – 1/2-1/2 – Karjakin, Sergey – G1 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. Bxc6 dxc6 7. d3 Nd7 8. Nbd2 O-O 9. Nc4 Re8 10. b3 Bd6
Las Palmas 1996 – Round 5 – Anand, Viswanathan – 1/2-1/2 – Topalov, Veselin – G10 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. d3 d6 7. Nc3 b5 8. Bb3 Na5 9. Kh1 c6 10. h3 Ra7
Lindores Abbey Tal Memorial 2021 – Round 3.34 – Kryvoruchko, Yuriy – 1-0 – Kuybokarov, Temur – G146 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. d3 d6 7. c3 O-O 8. Nbd2 Ba7 9. Bc2 Nh5 10. d4 Qf6
Tata Steel India Blitz 2019 – Round 1.2 – Aronian, Levon – 0-1 – Harikrishna, Pentala – G2 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. Bxc6 dxc6 7. d3 Bg4 8. h3 Bxf3 9. Qxf3 Nd7 10. Nd2 Qe7
World Blitz 2016 – Round 5.18 – Zhigalko, Sergei – 0-1 – Bu, Xiangzhi – G187 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. Nc3 O-O 7. Bxc6 dxc6 8. Nxe5 Bd4 9. Nf3 Bxc3 10. dxc3 Nxe4
World Blitz 2023 – Round 13.9 – Duda, Jacob – 1-0 – Sindarov, Javokhir – G780 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. Bxc6 dxc6 7. d3 Bg4 8. Nbd2 Nd7 9. h3 Bh5 10. Nc4 Qe7
World Blitz 2023 – Round 19.5 – Indjic, Aleksandar – 1/2-1/2 – Nepomniachtchi, Ian – G1099 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. d3 d6 7. Be3 Bxe3 8. Bxc6+ bxc6 9. fxe3 O-O 10. Nbd2 Ng4
World Blitz 2023 – Round 5.19 – Indjic, Aleksandar – 1/2-1/2 – Pranesh M – G272 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. d3 d6 7. Be3 Bxe3 8. Bxc6+ bxc6 9. fxe3 O-O 10. Nbd2 Ng4
Yerevan ol (Men) 1996 – Round 10 – Illescas Cordoba, Miguel – 0-1 – Malaniuk, Vladimir P – G148 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. d3 d6 7. Be3 Bxe3 8. fxe3 O-O 9. Nc3 b5 10. Bb3 Na5

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