Ragosin variant
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The basic position of the Ragosin variant after 3. Nb1 – c3 Ng8 – f6 4. Ng1 – f3 Bf8 – b4
The Ragosin variant is an opening in the game of chess , which is part of the Queen's Gambit and therefore belongs to the closed games .
It mostly develops from the Rejected Queen's Gambit . However, it can also arise from the Nimzowitsch-Indian defense and is therefore referred to in some (older) opening works as the “Ragosin system of the Nimzowitsch-Indian defense” (Taimanow, p. 227).
The Ragosin variant is the sequence of moves
1. d2-d4 d7-d5 2. c2-c4 e7-e6 3. Nb1-c3 Ng8-f6 4. Ng1-f3 Bf8-b4 . It was named after the Soviet grand master Vyacheslav Ragosin and is classified under the key D38 in the opening system of the ECO codes .
With the attack on point c3 it resembles the Westphalia variant , which would arise here after 5. Bc1 – g5 Nb8 – d7, and the Cambridge Springs variant . In contrast to the Cambridge Springs variant, Black could play c7 – c5 in one go. But Black for the time being renounces c7 – c5 and is ready to protect his bishop on b4 with his queen knight on c6. E.g. after 5. Qd1-a4 +. In such a case, Black then strives for the move e6 – e5 with active piece play in the center and on the kingside .
5. Bc1 – g5 d5xc4 6. e2 – e4 c7 – c5 results in the Viennese variant .
5. c4xd5 e6xd5 6. Bc1 – g5 avoids that, rules out the possibility of e6 – e5 and remains the Ragosin variant. Another Nb8 – d7 7. e2 – e3 c7 – c5 shows the difference to the Cambridge Springs variant.
5. c4xd5 e6xd5 6. Bc1 – g5 h7 – h6 7. Bg5xf6 Qd8xf6 and 5. Bc1 – g5 h7 – h6 6. Bg5xf6 Qd8xf6 are similar to the Moscow variant .
5. c4xd5 e6xd5 6. Bc1 – g5 Nbd7 !? covers f6 and is ready to play actively on the queenside, beginning with c7 – c5.
5. Bc1 – g5 h7 – h6 6. Bg5xf6 Qd8xf6 7. Ta1 – c1 0–0 8. a2 – a3 Bb4xc3 + 9. Rc1xc3 d5xc4 10. Rc3xc4 c7 – c6 11. Dd1 – c2 Sb8 – d7 12. e2 – e3 e6 –E5 is an example variation.
5. e2 – e3 leads to the Rubinstein system of the Nimzo-Indian defense.
literature
- Mark Taimanow : Queen's Gambit to Dutch . 5th edition. Sportverlag Berlin , 1980.
- Jerzy Konikowski : Modern Queen's Gambit ... played right . Beyer-Verlag, Hollfeld 2004, ISBN 3-88805-483-4 .