C54o — Giuoco Piano: Moeller (Therkatz) Attack

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Nc3 Nxe4 8.O-O Bxc3 9.d5 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Attaque sur le roi adverse resté au centre.

Atouts. Les Blancs s'appuient sur un fou actif en c4, la paire de fous et la colonne semi-ouverte c.

Côté adverse. Le fou enfermé en c8 et le roi resté au centre.

En contrepartie. Plusieurs pièces dorment encore (le fou c1 et la tour a1) et le pion isolé d5.

Plans. Be3 (Développer Bc1) ; h3 (Empêcher ...Bg4).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Exploiter la case forte b4….

Atouts. Les Noirs s'appuient sur une majorité de pions à l'aile_dame (3 contre 2), les cases fortes b4 et e5, un fou actif en c3 et la paire de fous.

Côté adverse. Le pion isolé d5 et le fou enfermé en c1.

En contrepartie. Le roi n'est pas encore à l'abri et plusieurs pièces dorment encore (le fou c8 et les tours a8 et h8).

Plans. O-O (Mettre le roi en sécurité, connecter les tours) ; ...d6 (Libérer Bc8) ; ...Na5 (Attaquer Bc4) ; ...f6 (Rupture) ; ...f5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	● d5	—
Arriérés	—	—
Chaînes	—	—
Passés	—	—
Majorité	—	● aile_dame 3v2

Cases

	♔ Blancs	♚ Noirs
Cases fortes	—	● b4 (2v0), ● e5 (2v1)
Cases faibles	● d2, ● d4	● d5, ● g5
Centre	● d5 (2v0)	● e5 (2v1)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Ouvertes	● e	● e
Semi-ouvertes	● c	—

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bc4	● Bc4 Actif (mob. 5)
Bc3		● Bc3 Actif (mob. 8)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	2 (● 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	semi-ouvert
Ruptures	—	● …d7-d6, ● …f7-f6, ● …f7-f5

Partie
19. Amber Rapid 2010 – Round 1 – Gashimov, Vugar – 1/2-1/2 – Dominguez Perez, Leinier – G4 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Ne5 10. Qe2 O-O
1905 Barmen-B – Round 1 – Cohn, Wilhelm – 1-0 – Forgacs, Leo – G15 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Bf6 10. Re1 Ne7
1906 Gyor – Round 8 – Steiner, Bernat – 0-1 – Brody, Miklos – G8 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Ne5 10. bxc3 Nxc4
1907 Karlsbad – Round ? – Spielmann, Rudolf – 0-1 – Důras, Oldřich – G190 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Bf6 10. Re1 Ne7
1907 Karlsbad – Round 1 – Leonhardt, Paul – 1/2-1/2 – Berger, Jacob – G124 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Ne7 10. bxc3 O-O
1907 Karlsbad – Round 1 – Maroczy, Geza – 1-0 – Janowski, Dawid – G127 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Ba5 10. dxc6 bxc6
1907 Ostende II – Round 5 – Mortimer, James – 0-1 – Jacob Francis – G66 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Bf6 10. Re1 O-O
1908 GBR tour sim – Round ? – Lasker, Emanuel – 1-0 – ? – G12 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Na5 10. bxc3 O-O
1908 Vienna – Round 17 – Salwe, George – 0-1 – Rubinstein, Akiba – G171 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Bf6 10. Re1 Ne7
1919 Gothenborg – Round ? – Spielmann, Rudolf – 1-0 – Olson, Anton – G12 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Bf6 10. Re1 Ne7
1920 Bromley – Round 1 – Euwe, Max – 1-0 – Holloway, Edith Martha – G1 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Bf6 10. Re1 Ne7
1922 Bad Oeynhausen – Round 10 – Gruber, Sandor – 1-0 – Leonhardt, Paul – G22 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Ne5 10. Qe2 Nxf3+
1946 Mar del Plata – Round 1 – Maderna, Carlos – 1-0 – Michel, Pascal – G25 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Bf6 10. Re1 O-O
1946 Pittsburgh Open – Round ? – Levin, Jacob – 0-1 – Evans, Larry M – G115 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Ne5 10. bxc3 Nxc4
1947 Budapest HUN – Round ? – Gereben, Erno – 1-0 – Sillye, J – G13 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Bf6 10. Re1 Ne7
1948 South Fallsburg ch-USA – Round 1 – Whitaker, Norman – 0-1 – Kramer, Gerald – G100 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Ne5 10. bxc3 Nxc4
1948 South Fallsburg ch-USA – Round 1 – Whitaker, Norman – 1-0 – Janes, Miroslav – G98 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Na5 10. bxc3 Nxc4
1949 Mar del Plata – Round 1 – Corte, Cesar J – 1/2-1/2 – Alvarez Martin, Pedro – G22 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Bf6 10. Re1 Ne7
1949 Moskou ch-URS – Round 1 – Kopylov, Nikita – 1/2-1/2 – Levenfish, Grigory – G135 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Ne5 10. bxc3 Nxc4
1951 BCF Ch 38th – Round 1.8 – Milner Barry, Philip – 0-1 – Thomas Andrew – G2 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Ne5 10. Qe2 O-O
1951 Buenos Aires – Round 9 – Corte, Cesar J – 1-0 – Puiggros, Guillermo – G60 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Bf6 10. Re1 Ne7
1951 Madrid – Round 16 – Fuentes Garcia, Juan Manuel – 0-1 – Steiner, Herman – G16 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Ne5 10. bxc3 Nxc4
1951 USA-op 52nd – Round 9 – Whitaker, Norman – 1-0 – Fajans, Harry – G14 1. e4 Nc6 2. Nf3 e5 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Ne5 10. bxc3 Nxc4
1952 Belgrade – Round ? – Karaklajic, Nikola – 1-0 – Alexander, Conol Hugh – G35 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Ne5 10. bxc3 Nxc4
1952 Buenos Aires – Round 7 – Corte, Cesar J – 1/2-1/2 – Alonso-Lej De Las Casas, Fernando – G46 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Ne5 10. bxc3 Nxc4
1952 Hollywood – Round ? – Martin Rengel, Jose Maria – 1/2-1/2 – Pomar Salamanca, Arturo – G45 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Ne5 10. Bb3 O-O
1953 Moscow Ch Moscow RUS – Round ? – Estrin, Yakov – 1/2-1/2 – Ravinsky, Grigory – G7 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Ne5 10. bxc3 Nxc4
1955 URS Ch sf – Round 6 – Estrin, Yakov – 1/2-1/2 – Kholmov, Ratmir D – G8 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Bf6 10. Re1 O-O
1962 CSR Ch sf – Round 12 – Smejkal, Jan – 1-0 – Walica, Eduard – G42 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Ne5 10. bxc3 Nxc4
1966 Corr – Round 1 – Aabel Thomas Eapen – 1-0 – Markwell – G13 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Bf6 10. Re1 O-O
1966 La Habana olm prel – Round 2 – Zwaig, Arne – 0-1 – Kraidman, Yair – G74 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Ne5 10. bxc3 Nxc4
1968 Buenos Aires Open – Round 4 – Benko, Francisco – 0-1 – Castelli, Raul A – G5 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Ne5 10. bxc3 Nxc4
1969 Buenos Aires ch-ARG – Round 1 – Benko, Francisco – 0-1 – Castelli, Abele – G9 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Ne5 10. bxc3 Nxc4
Sinquefield Cup Ultimate Moves 2015 – Round ? – Vachier-Lagrave, Maxime – 1-0 – So, Wesley – G2 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. O-O Bxc3 9. d5 Ne7 10. bxc3 d6

C54o — Moeller (Therkatz) Attack

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Nc3 Nxe4 8.O-O Bxc3 9.d5

Eval: [-0.43]

Les coups candidats

9…Bf6 — 64.2% (1794 parties)

Ambassadeurs : ? (10x), Sott, Pavel (8x), Karlsson, Roger 1972 (7x), Sorri, Kari Juhani (6x), Euwe, Max (5x), Majewski, Jan (5x), Jandecka, Tomas (5x), Cleto, Dirceu Jr (5x)

9…Ne5 — 21.2% (591 parties)

Ambassadeurs : Sanmartino Gianluca (7x), Grazinys, Vidmantas (6x), Karlsson, Roger 1972 (5x), Tylecek, Drahomir (5x), Aggelis, Nikolaos (4x), Martin, Raymond (3x), Moody, David W (3x), De Coninck, Georges (3x)

9…Ne7 — 5.7% (159 parties)

Ambassadeurs : Williams, Elwood (2x), Leonhardt, Paul (1x), Berger, Jacob (1x), Helms, Hermann (1x), Sternberg, Lew (1x), de Wall, Robert (1x), Le Merdy, P. (1x), Ghaffour, F. (1x)

9…Na5 — 3.2% (89 parties)

Ambassadeurs : Kohout, Filip (1x), Subert, Franko (1x), Whitaker, Norman (1x), Janes, Miroslav (1x), Euwe, Max (1x), Craig, Carin (1x), Lasker, Emanuel (1x), ? (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9…Bf6	9…Ne5	9…Ne7	9…Na5
<1800	158	49%	31%	9%	4%
1800-2200	1015	65%	22%	5%	2%
2200-2600	414	73%	22%	1%	1%
2600+	5	40%	40%	20%	—

Évolution par décennie (% des parties)

Décennie	N parties	9…Bf6	9…Ne5	9…Ne7	9…Na5
1620s	1	—	100%	—	—
1890s	2	—	100%	—	—
1900s	28	61%	11%	7%	4%
1910s	16	69%	19%	—	6%
1920s	18	61%	22%	—	—
1930s	14	93%	—	—	—
1940s	15	47%	33%	—	13%
1950s	26	50%	46%	—	4%
1960s	37	73%	19%	—	5%
1970s	52	75%	13%	6%	4%
1980s	117	82%	11%	2%	3%
1990s	640	72%	12%	5%	3%
2000s	931	62%	21%	7%	4%
2010s	780	58%	29%	6%	3%
2020s	116	59%	27%	7%	2%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9…Bf6	58%	59%	▲ +1.0%
9…Ne5	29%	27%	▼ -2.4%
9…Ne7	6%	7%	▲ +1.0%
9…Na5	3%	2%	▼ -0.8%

Joueurs célèbres

Champions du monde dans cette position

Euwe, Max — 8 parties
Lasker, Emanuel — 3 parties
Anand, Viswanathan — 2 parties
Karpov, Aleksandr — 1 partie

Parties historiques

9…Bf6 — 64.2% (1794 parties)

1904 — Bernstein, Ossip vs Grekov, Aleksey — 1-0 — ?
1904 — Mikkelsen Hundvin, Bendik Harald vs ? — 1-0 — Odense DEN
1905 — Cohn, Wilhelm vs Forgacs, Leo — 1-0 — Barmen GER
1906 — Lasker, Emanuel vs Lowenton — 1-0 — Berlin GER
1907 — Spielmann, Rudolf vs Duras, Oldrich — 1-0 — Karlovy Vary

9…Ne5 — 21.2% (591 parties)

1620 — Greco, Gioacchino vs ? — 1-0 — Rome ITA
1899 — Schlechter, Carl vs Lasker, Emanuel — 0-1 — London ENG
1899 — Schlechter, Carl vs Meitner, Philipp — 1-0 — Vienna Vienna AUT
1904 — Passmore, S. vs Leonhardt, Paul — 0-1 — London ENG
1906 — Steiner, Bernat vs Brody, Miklos — 0-1 — Gyor

9…Ne7 — 5.7% (159 parties)

1907 — Leonhardt, Paul vs Berger, Jacob — 1/2-1/2 — Carlsbad CZE
1909 — Helms, Hermann vs Sternberg, Lew — 1/2-1/2 — ?
1974 — de Wall, Robert vs Williams, Elwood — 1-0 — U Tapao, Thailand
1974 — Wall, Bill vs Williams, Elwood — 1-0 — ?
1977 — De Bellis, Aldo vs Marfori — 0-1 — corr Italy

9…Na5 — 3.2% (89 parties)

1908 — Lasker, Emanuel vs ? — 1-0 — Great Britain
1919 — Euwe, Max vs Craig, Carin — 1-0 — Hastings ENG
1940 — Kohout, Filip vs Subert, Franko — 1-0 — ?
1948 — Whitaker, Norman vs Janes, Miroslav — 1-0 — South Fallsburg ch-USA
1957 — Overath, L. vs Epp, Edward R. Dr — 1-0 — Karlsruhe

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