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	mobile
Ruptures	● c3-c4	● …d5-d4

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 mobile

♔ 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 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. Nb3 (74 % des parties) ; exf6 (26 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Jeu au centre (rupture d5-d4).

Atouts. Les Noirs s'appuient sur un contrôle dominant de c4 et g5, un fou actif en c5 et la colonne semi-ouverte e.

Côté adverse. Un mauvais fou en c1.

Plans. ...Bb6 (Clouer f2, Fou actif (mobilité 6) — 52 % des parties) ; ...Nxf6 (23 % des parties) ; ...Ba7 (Clouer f2, Fou actif (mobilité 6) — 20 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

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 (1900)

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

Les coups candidats

12.Nb3 — 77.4% (393 parties)

Ambassadeurs : Vosselman, Jan (9x), Lombart, Philippe (8x), Blacher, Fernand (5x), Estrin, Yakov (5x), Ornstein, Axel (4x), Brilla-Banfalvi, Sandor (3x), Suetin, Alexey S (3x), Pelitov, Dimitar (3x)

12.exf6 — 21.7% (110 parties)

Ambassadeurs : Rompotti, Pertti (3x), Aadhitha Karikalan (2x), Tarnowski, Alfred (2x), Janoev, David (2x), Kaunonen, Kalevi (2x), Dmitrakov, Ilya (1x), Sokk, Kristjan (1x), Salm, Maxwell (1x)

12.a4 — 0.4% (2 parties)

Ambassadeurs : Milde, Lars (1x), Hirscheider, Helmut (1x), Garcia Cardenas, Pablo (1x), Dobson Aguilar, Luis F. (1x)

12.Nxe4 — 0.2% (1 parties)

Ambassadeurs : Rossi, Alan (1x), Cavallero, Eugenio (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	19	79%	21%	—	—
1800-2200	124	80%	20%	—	—
2200-2600	82	80%	18%	1%	—
2600+	3	67%	33%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	12.Nb3	12.exf6	12.a4	12.Nxe4
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	51	80%	16%	2%	—
2020s	8	100%	—	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
12.Nb3	80%	100%	▲ +19.6%
12.exf6	16%	0%	▼ -15.7%
12.a4	2%	0%	▼ -2.0%
12.Nxe4	0%	0%	+0.0%

Joueurs célèbres

Champions du monde dans cette position

Karpov, Anatoly — 1 partie
Tal, Mikhail — 1 partie

Parties historiques

12.Nb3 — 77.4% (393 parties)

1950 — LAR, Rai Joseph vs Pechan, Z. — 1-0 — Chocen
1951 — Medina-Garcia, Antonio vs Perez Perez, Francisco Jose — 0-1 — Madrid ESP
1951 — Wade, Robert G vs Klein, Ernst — 1-0 — Birmingham ENG
1951 — Averbakh, Yuri L vs Sokolsky, Alexey — 1-0 — Leningrad Ch Trade U
1953 — Moran Nuque, Augusto vs Puiggros, Guillermo — 1-0 — Lerida

12.exf6 — 21.7% (110 parties)

1951 — Grechkin, Dmitry M vs Radchenko, Aleksandr — 0-1 — USSR
1952 — Kochan, Fritz vs Illgen, Hans — 0-1 — ?
1953 — Timet, Dubravko vs Letic, Stevan — 0-1 — ?
1953 — Zventov vs Goldberg, Adam W — 1-0 — cr.
1953 — Schaffer Antunes Viegas vs Aabel, Anders — 0-1 — Milwaukee, WI USA

12.a4 — 0.4% (2 parties)

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 — Rossi, Alan vs Cavallero, Eugenio — 0-1 — corr Italy