Classical system (Nimzowitsch-Indian defense)
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Basic position of the classical system of the Nimzo-Indian defense after 4. Qd1 – c2
The classical system of the Nimzowitsch-Indian defense is an opening of the game of chess . It is one of the Closed Games and emerges from the Nimzo-Indian Defense . In the opening system of the ECO codes it is under the keys E32 – E39.
The classic system of the Nimzowitsch-Indian defense arises according to the moves:
- 1. d2-d4 Ng8-f6
- 2. c2-c4 e7-e6
- 3. Nb1-c3 Bf8-b4
- 4. Qd1-c2
In this system, which Capablanca liked to use and which was popular in the 1930s and 1940s, White initially prevents the creation of a double pawn and takes back control of e4. A recovery on c3 is planned with the queen. Black countermeasures can include this future location on c3 through Ne4 or maneuvers to open the c-file on which the white queen is located.
For many years, this system was considered boring and draws, but new ideas, including from former world champion Garry Kasparov , combined with sharp attacks among victims , revived it and made it one of the most popular options for white again.
4.Qc2 can lead to the following variations:
- 4.… d7 – d5 5. a2 – a3 Bb4xc3 + 6. Qc2xc3 Nf6 – e4 7. Qc3 – c2 Nb8 – c6 (c7 – c5 8. d4xc5 Nb8 – c6 also exist) 8. e2 – e3 e6 – e5 9. c4xd5 Qd8xd5 10. Bf1-c4 Qd5-a5 + 11. b2-b4 Sc6xb4 12. Qc2-e4 Nb4-c2 + 13. Ke1-e2 Qa5-e1 + 14. Ke2-f3 Sc2xa1 15. Bc1-b2 0-0
- 4. ... d7-d5 5. a2-a3 Lb4xc3 + 6. Dc2xc3 c7-c5 7 d5-d4 d4xc5 is Romanishin called -Gambit. 8. Qc3 – g3 is considered the critical answer.
- 4.… d7 – d5 5. c4xd5 Qd8xd5
This type of restoration company was of Alekhine introduced. After 6. Ng1 – f3 c7 – c5 7. Bc1 – d2 Bb4xc3 8. Bd2xc3 White has the pair of bishops . 6. Ng1 – f3 Qd5 – f5 7. Qc2xf5 exf5 is another invention of Romansh. The intention is to control e4 through the double pawn and Black's half-open e-file.
- 4. Qd1 – c2 d7 – d5 5. c4xd5 e6xd5 leads to a white minority attack after 6. Bc1 – g5 h7 – h6 7. Bg5xf6 Dd8xf6 8. a2 – a3 Bb4xc3 + 9. Dc2xc3 0–0 10. e2 – e3 Lc8 – f5 . 7. Bg5 – h4 c7 – c5 aggravates the game with 8. d4xc5 g7 – g5 9. Bh4 – g3 Nf6 – e4. 8. 0–0–0 was won in Keres-Botvinnik in 1941 with 8.… Bb4xc3! 9. Qc2xc3 g7 – g5 10. Bh4 – g3 c5xd4! quasi refuted.
- 4.… c7 – c5 5. d4xc5 0–0 dissolves White's center and seeks counterplay in the c-file. 6. Bc1 – g5 Nb8 – a6 7. a2 – a3 Bb4xc3 + 8. Qc2xc3 Sa6xc5 9. f2 – f3 finds the answer Nf6 – e4 because the pawn g7 is covered. Another 10. Bg5xd8 Ne4xc3 11. Bd8 – e7 results in the intermediate move Nc5 – b3.
- 4.… b7 – b6 ?! allows 5. e2 – e4.
- 4.… 0–0 also allows for 5. e2 – e4. But castling favors the opening of the center with 5.… d7 – d5 6. e4 – e5 Nf6 – e4 7. Bf1 – d3 c7 – c5.
After 4.… 0–0 the bondage 5. Bc1 – g5 gains strength because pushing the bishop away with 5.… h7 – h6 6. Bg5 – h4 g7 – g5 would weaken the castling position. 5.… c7 – c5 6. d4 – d5 is similar to the Leningrad system of Nimzo-Indian defense . 6. e2 – e3 h7 – h6 7. Bg5 – h4 c5xd4 8. e3xd4 Nb8 – c6 9. Ng1 – f3 d7 – d5 is similar to the Orthodox Queen's Gambit. (6. d4xc5 becomes the variant 4. Qd1 – c2 c7 – c5 5. d4xc5 0–0 6. Bc1 – g5)
After 5. a2 – a3 Bb4xc3 + 6. Qc2xc3 Qd8 – e8 avoids the pin Bc1 – g5. This is an invention by Raymond Keene , which is supposed to prepare e6 – e5 or f7 – f5 together with Qe8 – h5. 6.… b7 – b5 7. c4xb5 c7 – c6 is a maneuver that Alvis Vītoliņš likes to play to open the c- file on which the white queen is.
- 4.… Nb8 – c6 is the Zurich variant. It is similar to the Bogolyubov Indian Defense . Your plan is to swap b4-bishop and push e7 – e5 through. After 5. Ng1 – f3 d7 – d5 the opening goes into the Ragosin variant of the Queen's Gambit .
swell
- Heymann, Norbert: Classical Nimzo-Indian 4. Qc2