C82m — Spanish: Open, St. Petersburg, 11.Bc2 f5

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Bc5 10.Nbd2 O-O 11.Bc2 f5 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Jeu au centre (rupture c3-c4).

Atouts. Les Blancs s'appuient sur un fou actif en c2, la paire de fous, la colonne semi-ouverte d et un pion passé en e5.

Côté adverse. Un mauvais fou en e6.

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

Plans. h3 (Empêcher ...Bg4).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Exploiter la case forte c4….

Atouts. Les Noirs s'appuient sur les cases fortes c4 et g5, un fou actif en c5, la paire de fous et la colonne semi-ouverte e.

Côté adverse. Le fou enfermé en c1.

Plans. ...d4 (Rupture) ; ...f4 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● b2→c3	● a6→b5
Passés	● e5	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	—	● c4 (2v1), ● g5 (2v1)
Cases faibles	● f2, ● e4	—
Centre	—	● d5 (2v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● e

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bc2	● Bc2 Actif (mob. 5)
Bc5		● Bc5 Actif (mob. 9)
Be6		● Be6 Mauvais (mob. 3)
Paire de fous	● Oui	● Oui
Clouages	● pawn f2	—
Non développées	2 (● c1, ● a1)	1 (● a8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● c3-c4	● …d5-d4, ● …f5-f4

Partie
1900 DSB-12.Kongress – Round 9 – Billecard, Moritz – 0-1 – Janowski, Dawid – G58 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1902 DSB-13.Kongress Hauptturnier A – Round 19 – Cohn, Erich – 0-1 – Neumann, Augustin – G53 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1905 It (Men) Barmen GER – Round 4 – Reggio, Arturo – 1/2-1/2 – Hakansson, Arthur – G91 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1906 Ostend – Round ? – Důras, Oldřich – 1-0 – Maroczy, Geza – G32 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Bc2 O-O
1906 Ostende – Round 1 – Důras, Oldřich – 1-0 – Maroczy, Geza – G30 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Bc2 O-O
1907 Ostende II – Round 12 – Suechting, Hugo – 1/2-1/2 – Leonhardt, Paul – G147 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1911 Karlsbad – Round ? – Suechting, Hugo – 0-1 – Johner, Paul – G304 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1911 San Sebastian – Round 3 – Teichmann, Richard – 1/2-1/2 – Vidmar, Milan Sr – G18 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1912 BCF Ch 9. Major Open – Round 1 – Waterman, James Chrismas – 1-0 – Schelfhout, Willem – G1 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1912 Temesvary – Round 1 – Barosz – 0-1 – Breyer, Gyula – G31 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1914 It (Men) Mannheim GER – Round 11 – Flamberg, Alexander – 1/2-1/2 – Tarrasch, Siegbert – G11 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1924 Paris f-B – Round 8 – Handasyde, HK. – 1-0 – O'Hanlon, John – G37 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1927 London Olympiad 1st – Round 13.21 – Maroczy, Geza – 1/2-1/2 – Terho, Johannes – G139 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1927 London Olympiad 1st – Round 8.11 – Yates, Frederic D – 1/2-1/2 – Golmayo Torriente, Manuel – G77 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Nxe4 7. d4 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1928 It BSG Berlin GER – Round 11 – Brinckmann, Alfred – 1/2-1/2 – Steiner, Lajos – G47 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1941 Krakow – Round 3 – Kieninger, Georg – 1/2-1/2 – Bogoljubow, Efim – G8 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1941 Leningrad/Moscow – Round 2 – Lilienthal, Andor – 1/2-1/2 – Botvinnik, Mikhail – G11 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1942 Kuibyshev – Round 9 – Abramov, Lev – 1/2-1/2 – Sokolsky, Alexey – G44 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1942 Moscow Ch – Round ? – Boleslavsky, Isaac – 1-0 – Ragozin, Viacheslav – G67 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1945 USA-URS radio-m – Round 1 – Smyslov, Vladimir – 1-0 – Reshevsky, Samuel – G6 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1946 Arbon – Round 1 – Yanofsky, Daniel Abraham – 1-0 – Bucher Janik – G2 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1946 Barcelona – Round 2 – Medina-Garcia, Antonio – 1-0 – Wood, Gabriel – G18 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1946 Barcelona – Round 2 – Yanofsky, Daniel Abraham – 1-0 – Perez Perez, Francisco Jose – G17 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1946 CAN Ch – Round 12 – Belson, John – 1/2-1/2 – Anderson, Frank Ross – G11 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1946 Groningen – Round 3 – Boleslavsky, Isaac – 0-1 – Szabo, Laszlo – G16 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1946 Moscow Ch – Round ? – Bronstein, David I – 1/2-1/2 – Lilienthal, Andor – G50 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1946 Nottingham ch-BCF – Round 7 – Alexander Ronald Cheng – 1-0 – Milner Barry, Philip – G47 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1948 US Open – Round 2 – Shipman, Walter – 0-1 – Pavey, Max – G10 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1948 US Open Baltimore, MD USA – Round 7 – Pinkus, Albert – 1-0 – Shapiro, Oscar – G20 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1951 Madrid ESP – Round 3 – Medina-Garcia, Antonio – 0-1 – Perez Perez, Francisco Jose – G6 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1951 Staunton Memorial – Round 15 – Wade, Robert G – 1-0 – Klein Hansen, Emil – G110 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1953 Candidats Tournament – Round 10 – Averbakh, Yuri L – 1/2-1/2 – Szabo, Laszlo – G64 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1954 Dyckhoff Memorial A 5456 – Round ? – Salm, Maxwell – 1-0 – Barda, Olaf – G16 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1955 JUG Ch – Round 11 – Matanovic, Aleksandar – 1-0 – Puc, Stojan – G12 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1955 Novi Sad – Round 10 – Djurasevic, Bozidar – 1/2-1/2 – Karaklajic, Nikola – G83 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1955 URS Team Ch fin – Round 6 – Zurakhov, Vladlen Y – 1-0 – Chekhover, Vitaly – G25 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1956 Corr Dyckhoff Memorial – Round 1 – Schmid, Leo – 1-0 – Barda, Olaf – G12 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1956 Corr W-02ch – Round ? – Schmid, Lothar – 1-0 – Arnlind, Eric – G11 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1957 Warchau ch POL – Round 1 – Grabczewski, Romuald – 1/2-1/2 – Solecki, Zbigniew – G5 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1958 Munich olm fin-B – Round 10 – Tarnowski, Alfred – 1/2-1/2 – Andersen, Borge – G101 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1962 LAT Ch – Round ? – Suetin, Alexey S – 1-0 – Zhuravlev, Valery Ivanovich – G62 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1962 OWL Ch – Round 7 – Groenegress, Wilfried – 1/2-1/2 – Illgen, Alexander – G17 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1963 Corr – Round ? – Bannik, Anatolij – 1/2-1/2 – Altshuler, Roman Zinovievich – G17 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1963 Hoogovens-B – Round 3 – Zuidema, Coen – 1-0 – Ditt, Egon – G10 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1964 Capablanca Memorial – Round 5 – Jimenez Zerquera, Eleazar – 1/2-1/2 – Acevedo Ortega, Rodrigo Andres – G56 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1966 Tbilisi ch-URS – Round 8 – Suetin, Alexey S – 1/2-1/2 – Nei, Iivo – G76 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1967 Maribor – Round 3 – Unzicker, Wolfgang – 1-0 – Addison, Wiliam G – G25 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 a6 6. Ba4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1967 Moscow – Round ? – Stein, Leonid – 1-0 – Keres, Paul – G165 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1969 Monte Carlo – Round ? – Teschner, Rudolf – 0-1 – Honfi, Karoly – G53 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O
1975 URS Team Ch – Round 2 – Suetin, Alexey S – 1-0 – Faibisovich, Vadim Z – G417 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 O-O

C82m — Open St. Petersburg

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Bc5 10.Nbd2 O-O 11.Bc2 f5

Eval: [+0.62]

Les coups candidats

12.Nb3 — 72.4% (441 parties)

Ambassadeurs : Vosselman, Jan (10x), Estrin, Yakov (8x), Lombart, Philippe (8x), Blacher Fernand (5x), Medina-Garcia, Antonio (4x), Ornstein, Axel (4x), Garcia, Gildardo (4x), ? (4x)

12.exf6 — 26.3% (160 parties)

Ambassadeurs : Marco, Georg (6x), Janowski, Dawid (3x), Suechting, Hugo (3x), Yates, Frederic D (3x), Taubenhaus, Jean (3x), Rompotti, Pertti (3x), Ziolo, Henryk (2x), Lilienthal, Andor (2x)

12.a4 — 0.8% (5 parties)

Ambassadeurs : Sartori, Arthur (1x), Loewy, Leopold Jr (1x), Sartori, Spartaco (1x), Lowy, Leopold (1x), Englund, Fritz (1x), Torbjornsson T (1x), Milde, Lars (1x), Hirscheider, Helmut (1x)

12.Nxe4 — 0.2% (1 parties)

Ambassadeurs : Camacho Rossi, Jose (1x), Cavallero Sanchez, Giuliana (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	12.Nb3	12.exf6	12.a4	12.Nxe4
<1800	7	86%	14%	—	—
1800-2200	116	80%	20%	—	—
2200-2600	78	79%	19%	1%	—
2600+	3	67%	33%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	12.Nb3	12.exf6	12.a4	12.Nxe4
1880s	1	100%	—	—	—
1890s	7	29%	71%	—	—
1900s	26	42%	46%	12%	—
1910s	19	32%	68%	—	—
1920s	11	9%	91%	—	—
1930s	1	100%	—	—	—
1940s	37	73%	27%	—	—
1950s	31	65%	35%	—	—
1960s	38	66%	32%	—	3%
1970s	74	76%	24%	—	—
1980s	109	77%	22%	—	—
1990s	106	82%	18%	—	—
2000s	91	79%	20%	1%	—
2010s	50	80%	16%	2%	—
2020s	8	100%	—	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
12.Nb3	80%	100%	▲ +20.0%
12.exf6	16%	0%	▼ -16.0%
12.a4	2%	0%	▼ -2.0%
12.Nxe4	0%	0%	+0.0%

Joueurs célèbres

Champions du monde dans cette position

Euwe, Max — 3 parties
Lasker, Emanuel — 2 parties
Botvinnik, Mikhail — 2 parties
Smyslov, Vladimir — 1 partie
Karpov, Anatoly — 1 partie
Tal, Mikhail — 1 partie

Parties historiques

12.Nb3 — 72.4% (441 parties)

1882 — Fleissig, Bernhard vs MacKenzie, George H — 0-1 — Vienna AUT
1898 — Lasker, Emanuel vs Franz Leye — 0-1 — City of London CC, London ENG
1899 — Mason, James vs Cohn, Wilhelm — 0-1 — London ENG
1900 — Jacob, Franz vs Cohn, Wilhelm — 0-1 — Munich GER
1900 — Tietjen, A. vs Lawrence, Thomas F — 0-1 — London ENG

12.exf6 — 26.3% (160 parties)

1896 — Janowski, Dawid vs Marco, Georg — 1-0 — Nuerenberg GER
1897 — Janowski, Dawid vs Marco, Georg — 1/2-1/2 — Berlin GER
1897 — Suechting, Hugo vs Marco, Georg — 0-1 — Berlin GER
1897 — Metger, Johannes vs Von Bardeleben, Curt — 1/2-1/2 — Berlin GER
1899 — Jones, Edward O vs Marco, Georg — 1/2-1/2 — London ENG

12.a4 — 0.8% (5 parties)

1901 — Englund, Fritz vs Torbjornsson T — 1-0 — Goteborg SWE
1905 — Sartori, Arthur vs Loewy, Leopold Jr — 0-1 — Barmen GER
1905 — Sartori, Spartaco vs Lowy, Leopold — 0-1 — Barmen GER
2007 — Milde, Lars vs Hirscheider, Helmut — 0-1 — ?
2013 — Garcia Cardenas, Pablo vs Dobson Aguilar, Luis F. — 1-0 — Iquique CHI

12.Nxe4 — 0.2% (1 parties)

1969 — Camacho Rossi, Jose vs Cavallero Sanchez, Giuliana — 0-1 — corr Italy

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