Polerio variant

from Wikipedia, the free encyclopedia
  a b c d e f G H  
8th Chess rdt45.svg Chess --t45.svg Chess bdt45.svg Chess qdt45.svg Chess kdt45.svg Chess bdt45.svg Chess --t45.svg Chess rdt45.svg 8th
7th Chess pdt45.svg Chess pdt45.svg Chess pdt45.svg Chess --t45.svg Chess --t45.svg Chess pdt45.svg Chess pdt45.svg Chess pdt45.svg 7th
6th Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess ndt45.svg Chess --t45.svg Chess --t45.svg 6th
5 Chess ndt45.svg Chess --t45.svg Chess --t45.svg Chess plt45.svg Chess pdt45.svg Chess --t45.svg Chess nlt45.svg Chess --t45.svg 5
4th Chess --t45.svg Chess --t45.svg Chess blt45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg 4th
3 Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg 3
2 Chess plt45.svg Chess plt45.svg Chess plt45.svg Chess plt45.svg Chess --t45.svg Chess plt45.svg Chess plt45.svg Chess plt45.svg 2
1 Chess rlt45.svg Chess nlt45.svg Chess blt45.svg Chess qlt45.svg Chess klt45.svg Chess --t45.svg Chess --t45.svg Chess rlt45.svg 1
  a b c d e f G H  

The Polerio variation 3. Bf1 – c4 Ng8 – f6 4. Nf3 – g5 d7 – d5 5. e4xd5 Nc6 – a5

Template: checkerboard / maintenance / new

The Polerio variant of the chess opening two knights game in the follow-up ( 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 ) arises from the Prussian game ( 4. Ng5 d5 5. exd5 ) after the moves 5.… Sa5 6. Bb5 + c6 7. dxc6 bxc6 8. Be2 or 8. Qf3 ?! and has the ECO codes C58 and C59. It is named after Giulio Cesare Polerio , one of the earliest chess masters known by name, who submitted a detailed work on the two-knight game as early as 1560.

The move 8. Qf3 (C58) was popular in the 19th century. Currently the most important answers are 8.… Be7, 8.… Rb8 and 8.… h6.

8. Be2 (C59) is usually followed by 8.… h6, after which White can move 9. Nf3, after which Black can take the initiative with 9.… e4 10. Ne5 . This is seen as the main variant of the two-knight game in the Nachzug. Wilhelm Steinitz preferred 9th Nh3, but could not convince in a match against Michail Tschigorin in 1891 . The Steinitz variant was revived by Bobby Fischer in the 1960s. It was played by Nigel Short in the 1990s, and today the move is considered as good as 9.Nf3.

"Fat Fritz", based on the modern AI software Leela Chess Zero, favors the interesting alternative 8. Bd3. This bishop is aiming for e4 or f1 (from there to g2).

literature

Individual evidence

  1. ↑ In chess openings, the term "imminent" refers to the fact that "the trainee" - that is, black, since white opens the game - plays the moves that give the game its name.
  2. ↑ a b c d Alexei Suetin: Textbook of Chess Theory, Sportverlag Berlin, 1974, p. 101.