Paulsen variant

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Basic position of the Paulsen variant

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The Paulsen variant is a variant of the Sicilian Defense , an opening in the game of chess . It is classified in the ECO codes under the codes B40 to B43.

It arises after the moves ( see also : chess notation ):

1. e2-e4 c7-c5
2. Ng1-f3 e7-e6
3. d2-d4 c5xd4
4. Nf3xd4 a7-a6

This system is named after Louis Paulsen , a chess theorist , especially in German-speaking countries . In Slavic countries she is often named after Ilya Kan , a Russian international master who also studied her. First Louis Paulsen came up with this opening, but it was played for the first time in practice by his brother Wilfried Paulsen, namely in Wiesbaden against Winawer in 1880 , and a year later he won in Berlin against Zukertort .

The black structure is extremely flexible. This allows the follower to wait to see how white builds up and then react. However, he must make sure that his development gap does not become too great.

White has great freedom in choosing his moves, as there is no pressure on his center . An important option is c2 – c4, the so-called Maróczy structure, which is known from the accelerated kite . White can either play 5. c2 – c4 immediately or after a few moves. The variant became increasingly popular in top chess at the end of the 20th century. Systems with c2 – c4, in contrast to those with 5. Sb1 – c3, have hardly been fully analyzed . They are mostly calm and positional.

  • 5. Bf1 – d3 is today's main continuation. It develops a piece, prepares for short castling and retains the option of later c2 – c4. Ng8 – f6 6. 0–0 6. e4 – e5 loses a pawn because of 6.… Qd8 – a5 +, followed by ... Qa5xe5 +. 5.… Bf8 – c5 now attacks the unprotected Nd4. 6. Nd4 -b3 Bc5-a7
  • 5. c2 – c4 the Maróczy construction
  • 5. Sb1-c3

After 5. Nc3 Qc7 the black queen is on a favorable square. 6. g3, 6. Bd3 and 6. Be2 are now aiming for 0–0. E.g. 6. Be2 Nf6 7. 0–0 Nc6 8. Be3 Bb4 9. Sa4 (squinting at b6) Be7 10. Nxc6 bxc6 11. Nb6 Rb8 12. Nxc8 Qxc8 13. e5 Nd5 14. Bc1 Bc5 15. c4 Ne7 16. b3 Qc7 17. Bb2

With 5.… Nc6, Black moves on to the Taimanow variant .

5.… b5 6. Bd3 b4? 7. Sa4 Da5 8. b3 d6 9. 0–0 Bd7 10. a3! (10.… Bxa4? 11. axb4) bxa3 11. Bxa3

Individual evidence

  1. ↑ Schach magazine , 2019/9 page 68
  2. ↑ John Emmms : Sicilian secrets, Everyman Chess, 2004, pp 124-126 and S. 131st