Chess requirement

A chess bid is the threat posed to the king in chess by an opponent's piece. The king is threatened if he could be captured by the piece when it was its turn. This also applies if the attacking figure cannot move onto the king's square because, for example , it is tied to its own king . The Chess bid goes from the figure , which the king attacks. It is said: “The piece offers the king check” or “The king is in check”.

Every chess bid must be fended off. There are exactly three options for this:

• The threatened king moves to a field that is not threatened.
• A piece moves between the piece giving chess and its own king and thereby blocks the attacker's line of action. This defense option does not work against a knight , because he could pull over the figure of the defender.
• The piece bidding chess is captured.

If the king cannot be brought to safety by any of these three possibilities, he is checkmated . If a player whose king is not in check cannot make a legal move that does not lead to check, he is not mate, but patted . The game then ends in a draw.

If a chess bid is not blocked or a player pulls his own king into chess, this is an invalid move that must be withdrawn (an exception applies in blitz chess , where an invalid move results in the loss of the game if the opponent complains). While the king is in check, he may temporarily not castle . Neither can he jump over a square on which he is in check when castling.

The rules do not require the chess player to speak out loud. That's why he doesn't face any sanctions if he doesn't say "Check!" says. While chess commands pronounced aloud are common among casual players, they are seldom seen in tournament practice.

Chess laws

Trigger chess and double chess

	a	b	c	d	e	f	G	H
8th									8th
7th									7th
6th									6th
5									5
4th									4th
3									3
2									2
1									1
	a	b	c	d	e	f	G	H

White to move. Each knight move opens the bishop's diagonal and thus offers check. With the two moves Ne7 ++ and Nf6 ++ the knight also threatens the king - double chess!

A special kind of chess law is the deduction chess . A piece is moved in such a way that the path of another own piece to the opposing king is cleared, and the king is in check (analogous to the drawing in between, a knight cannot become the piece offering chess by chess). There is an increase in this in double chess . The piece that clears the way also threatens the opposing king, so that he is attacked by two pieces at the same time. A double chess can only be fended off by moving the king away, since by capturing or moving in between only one of the pieces could be fended off.

If a chess bid is rejected and a chess bid is given at the same time, one speaks of a cross chess .

One type of intermediate move is the intermediate chess.

If a player can check with each further move without setting mate, and also makes use of this, this is called perpetual check . The game ends in a draw because the permanent chess inevitably results in three repetitions of positions or a draw due to the 50-move rule .

See however

• Gardez (chess)

References

1. ^ Fide rules of chess ; published by the German Chess Federation (DOSB), status: 2016, online at: [1]
2. ↑ Jean Dufresne, Jacqes Mieses: Textbook of the chess game. Edited by Rudolf Teschner. Reclam, Stuttgart 2003, ISBN 3-15-021407-6 .