Skewer (chess)

As a skewer is called in a chess tactic element in which the bishop, rook or bishop a high-quality piece of the opponent threaten, in particular offer the opponent's king chess and after its withdrawal threaten or propose a situated behind the king figure. The spit is a form of double attack.

Example: " impaled " Lady

The spike is related to bondage, with the main difference that the more valuable figure in front of that is here with lower value. The opponent is forced to bring this figure in security, whereby the low-order character is exposed and can be beaten. A spear can only be realized with queen, bishop or rook.

In the example on the left side of the black queen is " impaled " by the white bishop. The black player will move in all probability the lady, so the play is vulnerable. The spike in this example is not absolute: the black player will remove all probability the lady from the threat, but need not necessarily do.

In contrast, in the second example (right) the white king is " impaled " in an absolute way: He can not beat the black bishop, and he can not remain in check as well. Therefore White must take the king. Black gives his runner for the white lady and so achieves sufficient material advantage to win the game themselves.

Spikes occur in games between experienced chess players on rare than bondage. However, they are stronger because the attacked player may avoid loss of material only in rare cases and act often play a decisive effect.

Examples:

• Study by Josef Kling Chess Weekly, 1849
• Study by Alexei Sergeyevich Seleznev, Schachmaty, 1924
• Study by Alexander Hildebrand, Lommerange anniversary tournament, 1970

Weblink

• Study of Mikhail Sinar, Tscherwony Girnik 1977 with multiple echo of a spit

• Chess motif