C49k — Four Knights: Symmetrical, Pillsbury Variation

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Ne7 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Atouts. Les Blancs s'appuient sur la case forte c4, des fous actifs en b5 et g5 et la paire de fous.

Côté adverse. Le fou enfermé en c8 et un mauvais fou en b4.

Plans. h3 (Empêcher ...Bg4) ; c3 (Préparer d4).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Atouts. Les Noirs s'appuient sur les cases fortes g4 et c5, un fou actif en b4 et la paire de fous.

En contrepartie. Plusieurs pièces dorment encore (le fou c8 et la tour a8).

Plans. ...Bg4 (Développer Bc8, clouer Nf3) ; ...c6 (Rupture) ; ...c5 (Rupture) ; ...d5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● c2→d3, d3→e4	● d6→e5, c7→d6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● c4 (2v0)	● g4 (2v0), ● c5 (2v0)
Cases faibles	—	● d5
Centre	● e4 (2v1)	—

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bb5	● Bb5 Actif (mob. 6)
Bg5	● Bg5 Actif (mob. 7)
Bb4		● Bb4 Actif (mob. 4)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	1 (a1)	2 (c8, a8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Roqué	● Roqué
Droits de roque	—	—

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● d3-d4	● …c7-c6, ● …c7-c5, ● …d6-d5

Partie
1901 Havana m – Round 4 – Corzo y Principe, Juan – 0-1 – Capablanca, Jose – G4 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Ne2 Ng6 9. c3 Ba5 10. Ng3 h6
1901 RUS-ch02 – Round 5 – Schiffers, Emanuel – 0-1 – Janowski, Dawid – G9 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Bxf6 gxf6 9. Nh4 c6 10. Bc4 d5
1906 DSB-15.Kongress – Round 8 – Wolf Heinrich – 1/2-1/2 – Janowski, Dawid – G49 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 c6 9. Ba4 Ng6 10. Bb3 Nxh4
1907 Berlin Jubilee – Round 11 – Adalid Moll, Pablo – 0-1 – Teichmann, Richard – G48 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 Bxc3 9. bxc3 Ne8 10. d4 f6
1907 Karlsbad – Round 1 – Důras, Oldřich – 0-1 – Leonhardt, Paul – G147 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 Bxc3 9. bxc3 Ne8 10. d4 f6
1907 Karlsbad – Round 1 – Leonhardt, Paul – 1/2-1/2 – Teichmann, Richard – G141 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Bxf6 gxf6 9. Nh4 c6 10. Bc4 b5
1907 Karlsbad – Round 1 – Wolf Heinrich – 1/2-1/2 – Johner, Paul – G82 1. e4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Bc4 Bxc3 9. bxc3 Ng6 10. Nh4 c6
1907 Oostende – Round 2 – Tarrasch, Siegbert – 1-0 – Janowski, Dawid – G7 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 c6 9. Bc4 Bg4 10. f3 Be6
1907 Ostende – Round 1 – Schlechter, Carl – 1-0 – Janowski, Dawid – G12 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 c6 9. Bc4 Be6 10. Bxf6 gxf6
1908 DSB-16.Kongress – Round 14 – Von Bardeleben, Curt – 1-0 – Wolf Heinrich – G83 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Bxf6 gxf6 9. Nh4 c6 10. Ba4 Bxc3
1908 Prague – Round 1 – Salwe, George – 0-1 – Rubinstein, Akiba – G22 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Ne2 Ng6 9. Ng3 h6 10. Be3 c6
1908 Prague – Round 1 – Treybal, Karel – 0-1 – Teichmann, Richard – G21 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Bxf6 gxf6 9. Nh4 Bxc3 10. bxc3 Ng6
1908 Prague – Round 11 – Schlechter, Carl – 1/2-1/2 – Janowski, Dawid – G96 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Bxf6 gxf6 9. Nh4 Bxc3 10. bxc3 Ng6
1908 Prague – Round 19 – Treybal, Frantisek – 0-1 – Teichmann, Richard – G150 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Bxf6 gxf6 9. Nh4 Bxc3 10. bxc3 Ng6
1908 Prague – Round 9 – Prokes, Ladislav – 0-1 – Janowski, Dawid – G82 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Ne2 Ng6 9. c3 Ba5 10. Nh4 h6
1909 BCF Ch 6th – Round 5 – Sergeant, Edward – 0-1 – Blake, Joseph – G23 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 c6 9. Bc4 Be6 10. Bxf6 gxf6
1909 St Petersburg – Round ? – Perlis, Julius – 1-0 – Salwe, Georg – G118 1. e4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 c6 9. Bxf6 gxf6 10. Ba4 f5
1909 St Petersburg – Round 1 – Perlis, Julius – 1-0 – Salwe, George – G46 1. e4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 c6 9. Bxf6 gxf6 10. Ba4 f5
1910 DSB-17.Kongress – Round 2 – Tarrasch, Siegbert – 0-1 – Spielmann, Rudolf – G12 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Bxf6 gxf6 9. Nh4 c6 10. Bc4 Ng6
1910 DSB-17.Kongress – Round 8 – Fleischmann, Leo – 1/2-1/2 – Leonhardt, Paul – G55 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Bxf6 gxf6 9. Nh4 Ng6 10. Nxg6 hxg6
1910 DSB-17.Kongress – Round 8 – Yates, Frederic D – 0-1 – Spielmann, Rudolf – G53 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Bxf6 gxf6 9. Nh4 c6 10. Bc4 Ng6
1910 Hamburg Hauptturnier-A – Round 1 – Bosch van Rosenthal, Edzard – 0-1 – Ahues, Carl – G4 1. e4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Bxf6 gxf6 9. Nh4 c6 10. Bc4 Ng6
1910 Vienna – Round ? – Tartakower, Savielly – 0-1 – Spielmann, Rudolf – G11 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Bxf6 gxf6 9. Nh4 c6 10. Ba4 Ng6
1911 BCF Ch 8th – Round 9 – Mackenzie, Arthur J – 1-0 – McKee, James Alexander – G15 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 c6 9. Bc4 a5 10. a3 Bc5
1911 San Sebastian – Round 5 – Schlechter, Carl – 1-0 – Důras, Oldřich – G31 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 c6 9. Bc4 Ne8 10. f4 Bxc3
1912 Bad Pistyan – Round 7 – Cohn, Erich – 1-0 – Johner, Paul – G23 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 c6 9. Bc4 Ng6 10. Nxg6 hxg6
1912 It (Men) San Sebastian ESP – Round 5 – Spielmann, Rudolf – 1-0 – Forgacs, Laszlo – G13 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 c6 9. Bc4 Ne8 10. Qh5 Nc7
1912 Temesvar – Round ? – Tyroler, Alexandru – 1/2-1/2 – Réti, Richard – G10 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 c6 9. Bc4 Ng6 10. Kh1 Nf4
1914 BCF Ch 11th – Round 7 – Gunsberg, Isidor – 1/2-1/2 – Viner William Samuel – G13 1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Bxf6 gxf6 9. Nh4 Bxc3 10. bxc3 f5
1920 Bromley – Round 2 – Bigelow, Horace – 0-1 – Euwe, Max – G3 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 c6 9. Bc4 d5 10. exd5 Bxc3
1921 BCF Ch 14th – Round 6 – Price, Hubert E – 0-1 – Yates, Fred Dewhirst – G6 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 c6 9. Ba4 Ng6 10. Nxg6 fxg6
1921 DSB-21.Kongress – Round 10 – Schlage, William – 0-1 – Ahues, Carl – G46 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 c6 9. Ba4 Ng6 10. Nxg6 fxg6
1923 Karlsbad – Round 1 – Tarrasch, Siegbert – 0-1 – Yates, Frederic D – G91 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 c6 9. Bc4 d5 10. Bxf6 gxf6
1923 Trieste – Round 1 – Singer, Christoph – 0-1 – Yates, Frederic D – G10 1. e4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Ne2 Ng6 9. Ng3 h6 10. Be3 c6
1924 BCF Ch 17th – Round 3 – Blake, Joseph – 1-0 – Price, Hubert E – G15 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 c6 9. Bc4 d5 10. Bb3 Be6
1924 Weston – Round 3 – Wainwright George Edward – 0-1 – Euwe, Max – G8 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Bxf6 gxf6 9. Nh4 Ng6 10. Nxg6 hxg6
1926 Bardejov – Round 5 – Kitaeff Mattison, Andres Constantin – 1-0 – Kostic, Boris – G26 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Bc4 c6 9. Ne2 Ng6 10. c3 Ba5
1926 WECU Major Open 3rd – Round 8 – Tylor, Theodore Henry – 1/2-1/2 – Spencer, Edmund – G17 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 c6 9. Bc4 d5 10. Bb3 Bg4
1936 Nottingham – Round 1 – Tylor, Theodore Henry – 0-1 – Lasker, Emanuel – G44 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 c6 9. Bc4 Kh8 10. f4 exf4
1937 Margate – Round 8 – Foltys, Jan – 1/2-1/2 – Keres, Paul Petrovich – G34 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Ne2 Ng6 9. Nh4 h6 10. Nxg6 fxg6
1947 Hilversum zt – Round 10 – Plater, Kazimierz – 0-1 – O'Kelly, Albéric de Galway – G27 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Bxf6 gxf6 9. Nh4 c6 10. Ba4 f5
1947 Mar del Plata – Round 10 – Hounie Fleurquin, Carlos – 0-1 – Pizzi Possi, Tulio – G90 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Bxf6 gxf6 9. Nh4 c6 10. Ba4 Ng6
1958 URS Ch sf – Round ? – Shaposhnikov, Yury – 0-1 – Korchnoi, Viktor – G72 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 Bxc3 9. bxc3 Nd7 10. d4 f6
1961 Corr FS – Round 1 – Lundqvist, Ake – 1-0 – Bernstein, Sidney – G14 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 c6 9. Bc4 d5 10. Bxf6 gxf6
1961 Oberhausen etc – Round 6 – Puig, Pedro – 0-1 – Smyslov, Vladimir – G163 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Bxf6 gxf6 9. Nh4 c6 10. Ba4 Ng6
1963 Leningrad ch-URS – Round ? – Bagirov, Vladimir – 1/2-1/2 – Korchnoi, Viktor – G164 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 c6 9. Ba4 Ne8 10. Bb3 Kh8
4. Kings Tournament 2010 – Round 10 – Nisipeanu, Liviu-Dieter – 0-1 – Ponomariov, Ruslan – G28 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 c6 9. Bc4 d5 10. Bxf6 gxf6
41. Olympiad Open 2014 – Round 9.10 – Perunovic, Milos – 1/2-1/2 – Sargissian, Gabriel – G610 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Ne7 8. Nh4 c6 9. Bc4 d5 10. Bb3 a5

C49k — Symmetrical Pillsbury Variation

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Ne7

Eval: [+0.00]

Les coups candidats

8.Nh4 — 52.5% (248 parties)

Ambassadeurs : Blake, Joseph (5x), Perlis, Julius (4x), Yates, Frederic D (4x), Korchnoi, Viktor (4x), Khokhlov, Igor (4x), Cohn, Erich (3x), Lasker, Emanuel (3x), Capablanca, Jose (3x)

8.Bxf6 — 28.2% (133 parties)

Ambassadeurs : Teichmann, Richard (4x), Spielmann, Rudolf (4x), Schiffers, Emanuel (3x), Salwe, Georg H S (2x), Leonhardt, Paul (2x), Tartakower, Savielly (2x), Fleischmann, Leo (2x), Janowski, Dawid (2x)

8.Ne2 — 7.0% (33 parties)

Ambassadeurs : Janowski, Dawid (2x), Foltys, Jan (2x), Keres, Paul Petrovich (2x), Rubinstein, Akiba (2x), Godena, Michele (2x), Alapin, Simon (1x), D Marco, Gianni (1x), Maroczy, Geza (1x)

8.Bc4 — 5.5% (26 parties)

Ambassadeurs : Bredenhof, Bo (2x), Janowski, Dawid (1x), Showalter, Jackson (1x), Wolf Heinrich (1x), Johner, Paul (1x), Kitaeff Mattison, Andres Constantin (1x), Kostic, Boris (1x), Maroczy, Geza (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8.Nh4	8.Bxf6	8.Ne2	8.Bc4
<1800	8	38%	50%	—	—
1800-2200	122	51%	28%	5%	6%
2200-2600	174	58%	23%	8%	6%
2600+	16	69%	19%	6%	—

Évolution par décennie (% des parties)

Décennie	N parties	8.Nh4	8.Bxf6	8.Ne2	8.Bc4
1890s	8	—	38%	38%	12%
1900s	25	40%	36%	20%	4%
1910s	38	63%	37%	—	—
1920s	23	65%	13%	9%	9%
1930s	4	50%	—	50%	—
1940s	3	—	100%	—	—
1950s	3	100%	—	—	—
1960s	6	83%	17%	—	—
1970s	7	43%	43%	—	—
1980s	3	67%	—	—	—
1990s	33	55%	27%	3%	3%
2000s	51	47%	25%	12%	8%
2010s	231	56%	26%	6%	5%
2020s	37	35%	38%	3%	16%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8.Nh4	56%	35%	▼ -20.7%
8.Bxf6	26%	38%	▲ +11.4%
8.Ne2	6%	3%	▼ -2.9%
8.Bc4	5%	16%	▲ +11.5%

Joueurs célèbres

Champions du monde dans cette position

Lasker, Emanuel — 3 parties
Euwe, Max — 3 parties
Steinitz, Wilhelm — 1 partie
Smyslov, Vladimir — 1 partie
Carlsen, Magnus — 1 partie
Ju, Wenjun — 1 partie

Parties historiques

8.Nh4 — 52.5% (248 parties)

1906 — Wolf Heinrich vs Janowski, Dawid — 1/2-1/2 — Nuerenberg GER
1907 — Treybal, Karel vs Adalid Moll, Pablo — 1-0 — Berlin GER
1907 — Tarrasch, Siegbert vs Janowski, Dawid — 1-0 — Ostende
1907 — Adalid Moll, Pablo vs Teichmann, Richard — 0-1 — Berlin GER
1907 — Schlechter, Carl vs Janowski, Dawid — 1-0 — Ostende

8.Bxf6 — 28.2% (133 parties)

1897 — Schiffers, Emanuel vs Suechting, Hugo — 1/2-1/2 — Berlin GER
1898 — Schiffers, Emanuel vs Halprin, Alexander — 1-0 — Vienna AUT
1898 — Koehler, Gerhard vs Marshall, Frank — 1-0 — ch Manhattan CC, New York
1901 — Schiffers, Emanuel vs Janowski, Dawid — 0-1 — Moscow RUS
1907 — Leonhardt, Paul vs Teichmann, Richard — 1/2-1/2 — Carlsbad CZE

8.Ne2 — 7.0% (33 parties)

1896 — Schiffers, Emanuel vs Steinitz, Wilhelm — 1/2-1/2 — Nuerenberg GER
1897 — Alapin, Simon vs Janowski, Dawid — 1/2-1/2 — Berlin GER
1898 — D Marco, Gianni vs Maroczy, Geza — 1/2-1/2 — Vienna AUT
1901 — Corzo y Principe, Juan vs Capablanca, Jose — 0-1 — Havana CUB
1905 — Schapiro, Elsie vs Schenkein, Joachim — 0-1 — Barmen GER

8.Bc4 — 5.5% (26 parties)

1898 — Janowski, Dawid vs Showalter, Jackson — 1-0 — New York, NY USA
1907 — Wolf Heinrich vs Johner, Paul — 1/2-1/2 — Carlsbad CZE
1922 — Maroczy, Geza vs Yates, Frederic D — 1-0 — London ENG
1926 — Kitaeff Mattison, Andres Constantin vs Kostic, Boris — 1-0 — Bardejov
1994 — Wagenmakers, Eric-Jan vs Hochstenbach, Michiel — 1/2-1/2 — Nederland tt

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