
When castling, the king cannot cross a field attacked by enemy pieces. The castling is finally impossible: 1) if the king has already moved 2) with the rook that used to move. The player has the right to continue the game with any move. Then there are no consequences for touching the figure. It may not be possible to meet these requirements. If a player touches the king first and then the rook (or both pieces at the same time), but the castling is impossible, then the move must be made by the king or the castling in the opposite direction. The move must be made in accordance with the "Touch the piece" rule. If the player touches the rook and then the king, the castling is impossible. The castling is a double move with the king and rook moving: first the king moves on two fields towards the rook, which is then moved to the adjacent field through it. The king moves on any adjacent field that is not under attack. A move on the field occupied by an enemy piece means that it has been captured and it must be immediately taken off the board (for "on pass", see below). Except for a knight and a rook, when it moves through the king during the castling the pieces cannot cross the occupied fields.


The castling changes the position of the king and the rook.
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A move is a move of a piece from one field to another, which is free or occupied by an enemy piece. Players are called partners, behind which the turn of a move. When counting the moves made one move is taken by White with the subsequent answer of Black. If a game is erroneously started by a participant who plays with black pieces, it is cancelled and played again. The colour of the partner's pieces in amateur games is determined by a draw, and in competitions - by the rules of conduct. Then, until the game is over, moves are made one by one. Notion of the move Starts a partner who has white figures (right protrusion).

If they are located differently, the position is considered impossible. Chess Game The initial position of the figures is shown in the diagram.
