Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	—
Passés	—	—
Majorité	—	—

Cases

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

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bf1	● Bf1 Non développé (mob. 5)
Bb4		● Bb4 Actif (mob. 8)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Clouages	● pawn d2	—
Non développées	4 (● c1, ● f1, ● a1, ● h1)	3 (● c8, ● a8, ● h8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● d2-d4	—

C46h — Three Knights: Schlechter Variation

1.e4 e5 2.Nf3 Nc6 3.Nc3 Bb4 4.Nd5 Nf6 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Nxb4 (Capture en b4 — 100 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...O-O (Mettre le roi en sécurité, connecter les tours) ; ...d6 (Libérer Bc8).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1906 DSB-15.Kongress – Round 2 – Wolf Heinrich – 1-0 – Chigorin, M. – G10 1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. Nd5 Nf6 5. c3 Be7 6. Bd3 O-O 7. Bc2 Re8 8. O-O d6 9. h3 Be6 10. Nxe7+ Qxe7
1908 Prague – Round 5 – Treybal, Frantisek – 1/2-1/2 – Schlechter, Carl – G52 1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. Nd5 Nf6 5. Nxb4 Nxb4 6. c3 Nc6 7. Bb5 Nxe4 8. O-O O-O 9. Re1 Nd6 10. Bxc6 dxc6
1912 Bad Pistyan – Round 12 – Spielmann, Rudolf – 1/2-1/2 – Teichmann, Richard – G49 1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. Nd5 Nf6 5. Bc4 O-O 6. c3 Be7 7. d3 d6 8. Nxe7+ Qxe7 9. Bg5 Be6 10. Bb5 Nd8
1912 It (Men) Bad Pistyan CZE – Round 10 – Rubinstein, Akiba – 1/2-1/2 – Teichmann, Richard – G43 1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. Nd5 Nf6 5. Nxb4 Nxb4 6. c3 Nc6 7. d4 exd4 8. e5 Ne4 9. cxd4 d5 10. Be2 O-O
1912 It (Men) Bad Pistyan CZE – Round 14 – Bogoljubow, Efim – 0-1 – Teichmann, Richard – G63 1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. Nd5 Nf6 5. c3 Be7 6. Bd3 d6 7. Bc2 Be6 8. Nxe7 Qxe7 9. O-O O-O 10. d3 h6
1912 It (Men) San Sebastian ESP – Round 3 – Spielmann, Rudolf – 1/2-1/2 – Schlechter, Carl – G7 1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. Nd5 Nf6 5. Bc4 d6 6. c3 Bc5 7. d3 Nxd5 8. Bxd5 Qf6 9. Be3 Bb6 10. Qa4 Bd7
1912 It (Men) San Sebastian ESP – Round 8 – Forgacs, Gyula – 1/2-1/2 – Rubinstein, Akiba – G18 1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. Nd5 Nf6 5. Nxb4 Nxb4 6. d4 d5 7. Nxe5 dxe4 8. c3 Nbd5 9. Bc4 O-O 10. O-O Be6
1922 Vienna – Round ? – Kmoch, Hans – 0-1 – Gruenfeld, Ernst – G103 1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. Nd5 Nf6 5. Bb5 Nxd5 6. exd5 e4 7. dxc6 dxc6 8. Be2 exf3 9. Bxf3 O-O 10. O-O f5
1923 Karlsbad – Round 1 – Treybal, Karel – 1/2-1/2 – Wolf, Hans-Josef – G88 1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. Nd5 Nf6 5. Nxb4 Nxb4 6. c3 Nc6 7. d3 d6 8. h3 h6 9. Be2 Ne7 10. Qc2 c6
1927 Kecskemet f I – Round 3 – Asztalos, Lajos – 1/2-1/2 – Nimzowitsch, Aron – G11 1. e4 Nc6 2. Nc3 e5 3. Nf3 Bb4 4. Nd5 Nf6 5. c3 Be7 6. Nxf6+ Bxf6 7. Bc4 d6 8. h3 Qe7 9. d3 Nd8 10. Be3 Bd7
1932 Bern – Round 12 – Henneberger, Walter – 0-1 – Alekhine, Alexander – G92 1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. Nd5 Nf6 5. Nxb4 Nxb4 6. Bc4 d5 7. exd5 e4 8. Ne5 O-O 9. O-O Bf5 10. d4 exd3
1932 Londen – Round 8 – Maroczy, Geza – 1/2-1/2 – Alekhine, Alexander – G21 1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. Nd5 Nf6 5. Nxb4 Nxb4 6. c3 Nc6 7. Qc2 O-O 8. Be2 d6 9. O-O Qe7 10. d3 Kh8
1933 Hastings3334 – Round 1 – Tylor, Theodore Henry – 1/2-1/2 – Alekhine, Alexander – G4 1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. Nd5 Nf6 5. Bc4 O-O 6. O-O Be7 7. Qe2 d6 8. c3 Na5 9. Nxe7+ Qxe7 10. Bd3 Nh5
1933 Jakarta sim – Round ? – Wertheim, W. – 0-1 – Alekhine, Alexander – G10 1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. Nd5 Nf6 5. Nxb4 Nxb4 6. c3 Nc6 7. Qc2 d6 8. Bc4 O-O 9. a4 Be6 10. Bxe6 fxe6
1951 Schlechter Memorial – Round ? – Mueller, Hans – 1/2-1/2 – Gruenfeld, Ernst – G36 1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. Nd5 Nf6 5. Nxb4 Nxb4 6. c3 Nc6 7. d3 d5 8. Qc2 h6 9. Be2 Be6 10. O-O O-O
1953 FRA Ch 28th – Round 7 – Noradounghian, Georges – 1/2-1/2 – Hugot, Claude – G15 1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. Nd5 Nf6 5. Nxb4 Nxb4 6. c3 Nc6 7. d4 d5 8. Bb5 Nxe4 9. Nxe5 O-O 10. Bxc6 bxc6

C46h — Schlechter Variation (1906)

1.e4 e5 2.Nf3 Nc6 3.Nc3 Bb4 4.Nd5 Nf6

Les coups candidats

5.Nxb4 — 64.1% (93 parties)

Ambassadeurs : Schuermans, Robert (3x), Wantiez, Fabrice (3x), Pergel, Laszlo (2x), Morvay, Miklos (2x), Genis, Roy (2x), Mueller, Hans (1x), Gruenfeld, Ernst (1x), Noradounghian, Georges (1x)

5.c3 — 15.2% (22 parties)

Ambassadeurs : Motwani, Paul (1x), Kotliar, Mark (1x), Jagodzinska, Joanna (1x), Puljek-Salai, Zorica (1x), Ruciero Miguez, Emilio (1x), Palacios de la Prida, Ernesto (1x), Vetemaa, Juri (1x), Schuermans, Robert (1x)

5.Bc4 — 7.6% (11 parties)

Ambassadeurs : Mikhalchenko, Petr (2x), Grkinic, Goran (1x), Villela, Edison (1x), Verhelst, Henk (1x), Holpp, Richard (1x), Froehlich, Peter (1x), Schlindwein, Rolf (1x), Kasper, Werner (1x)

5.Nxf6+ — 6.2% (9 parties)

Ambassadeurs : Rosemeier, A (1x), Keck, C (1x), Rozgonyi, Laszlo (1x), Hidegh, Eszter (1x), Suarez Mendoza, Ana Karina (1x), Vallina, Tatiana (1x), Strack, Leon (1x), Saskia Kita (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	5.Nxb4	5.c3	5.Bc4	5.Nxf6+
<1800	18	56%	11%	—	22%
1800-2200	37	78%	19%	—	—
2200-2600	40	58%	22%	18%	—

Évolution par décennie (% des parties)

Décennie	N parties	5.Nxb4	5.c3	5.Bc4	5.Nxf6+
1950s	2	100%	—	—	—
1970s	3	67%	—	—	33%
1980s	4	50%	50%	—	—
1990s	29	59%	21%	10%	7%
2000s	53	72%	9%	4%	8%
2010s	36	64%	11%	11%	3%
2020s	18	50%	28%	11%	6%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
5.Nxb4	64%	50%	▼ -13.9%
5.c3	11%	28%	▲ +16.7%
5.Bc4	11%	11%	+0.0%
5.Nxf6+	3%	6%	▲ +2.8%

Parties historiques

5.Nxb4 — 64.1% (93 parties)

1951 — Mueller, Hans vs Gruenfeld, Ernst — 1/2-1/2 — Vienna AUT
1953 — Noradounghian, Georges vs Collet, Hugo — 1/2-1/2 — Paris FRA
1977 — Asik, Darko vs Chas, Jerome — 1/2-1/2 — Toronto CAN
1977 — Micheel, Peter vs Braune, Andre — 1-0 — corr DDR/M
1982 — Diaz, Joaquin, Dr. vs Sieiro Gonzalez, Luis — 1/2-1/2 — Cuba

5.c3 — 15.2% (22 parties)

1984 — Jagodzinska, Joanna vs Puljek-Salai, Zorica — 1/2-1/2 — Katowice Ech-20G
1987 — Motwani, Paul vs Kotliar, Mark — 1-0 — Netanya ISR
1992 — Ruciero Miguez, Emilio vs Palacios de la Prida, Ernesto — 0-1 — Seville ESP
1992 — Braun, Gottfried, Dr. vs Comp ChessMachine — 1-0 — Dortmund open I
1994 — Vetemaa, Juri vs Schuermans, Robert — 1/2-1/2 — Charleroi ch-BE

5.Bc4 — 7.6% (11 parties)

1996 — Froehlich, Peter vs Schlindwein, Rolf — 0-1 — Eislingen jr tt
1997 — Verhelst, Henk vs Holpp, Richard — 0-1 — IECG
1999 — Grkinic, Goran vs Villela, Edison — 1-0 — ?
2002 — Kasper, Werner vs Genis, Roy — 1/2-1/2 — Frankfurt Fechenheim
2002 — Venturas, Bob vs Hausgaard, Olaf — 1-0 — ?

5.Nxf6+ — 6.2% (9 parties)

1978 — Rosemeier, A vs Keck, C — 1/2-1/2 — GER
1996 — Rozgonyi, Laszlo vs Hidegh, Eszter — 1-0 — HUN
1999 — Suarez Mendoza, Ana Karina vs Vallina, Tatiana — 1/2-1/2 — ?
2000 — Lingenover, Peterson vs Jonas, Schreiber Eder — 0-1 — ?
2002 — Engles, Frank Samuel vs Hadamitzky, Alexander — 1-0 — Heimbach-Weis

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