Lever (chess)

from Wikipedia, the free encyclopedia
  a b c d e f G H  
8th Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg 8th
7th Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg 7th
6th Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg 6th
5 Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess pdt45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg 5
4th Chess --t45.svg Chess --t45.svg Chess plt45.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 --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg 2
1 Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg 1
  a b c d e f G H  
The lever

Template: checkerboard / maintenance / new

When playing chess, a lever is a pair of pawns of opposite color, which are diagonally opposite each other so that each can beat the other. This makes it possible, for example, to open a line and place towers or other figures on it. In the minority attack lever play a key role.

Levers are also common in the opening . For example, the pawn pair c4 and d5 shown in the diagram often lasts for several moves when the Queen's Gambit is rejected .

example

  a b c d e f G H  
8th Chess rdt45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg 8th
7th Chess pdt45.svg Chess pdt45.svg Chess qdt45.svg Chess bdt45.svg Chess rdt45.svg Chess --t45.svg Chess kdt45.svg Chess pdt45.svg 7th
6th Chess --t45.svg Chess --t45.svg Chess ndt45.svg Chess bdt45.svg Chess pdt45.svg Chess --t45.svg Chess pdt45.svg Chess --t45.svg 6th
5 Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess pdt45.svg Chess nlt45.svg Chess pdt45.svg Chess --t45.svg Chess --t45.svg 5
4th Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess plt45.svg Chess ndt45.svg Chess plt45.svg Chess --t45.svg Chess --t45.svg 4th
3 Chess --t45.svg Chess --t45.svg Chess plt45.svg Chess --t45.svg Chess --t45.svg Chess nlt45.svg Chess --t45.svg Chess plt45.svg 3
2 Chess plt45.svg Chess plt45.svg Chess --t45.svg Chess --t45.svg Chess qlt45.svg Chess --t45.svg Chess plt45.svg Chess blt45.svg 2
1 Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess rlt45.svg Chess rlt45.svg Chess klt45.svg Chess --t45.svg 1
  a b c d e f G H  
Position after 18.… Re8 – e7

Template: chess board / maintenance / alt

In this position, White planned to break the g- file , which Black tried to prevent:

19. Kg1-h1 Ra8-g8
20. Rf1-g1 Kg7-f8
21. g2-g4 Re7-g7
22. Rg1-g2 Bd7-e8
23. Re1-g1

The pawn advance g2 – g4 was quite advantageous as it gave White control over the squares g2 and g3. Due to the exchange possibility associated with the lever, both players now had to concentrate their strengths on the g-file, with White having space advantage (White controls the squares g1, g2 and g3, Black only g7 and g8), but not implementing this afterwards and later lost to a bad game.

For Black, 19.… Ra8 – b8 20. Rf1 – g1 b7 – b5 21. g2 – g4 b5 – b4 with the leverage that is typical for a minority attack would have been an active alternative.

literature