Special moves
Castling
It is a special move involving the King and a Rook at the same time.
Each King, has the right to castle just once in a game. Castling consists of moving the King two squares towards the Rook and placing the Rook on the square next to it after jumping the King.
Examples
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| Black can castle on the Queenside | 1. … 0-0-0 Black has castled on the Queenside |
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| White can castle on the Kingside | 1.0-0 White has castled on the Kingside |
Requisites to Castle
In order to make this special move some requisites must be met:
- The King mustn’t be in check
- No Pieces can be situated on the squares between the Rook to castle and the King
- The King can’t occupy or pass through a square threatened by the rival pieces
Moves that prevent a future Castling
- The King must not have been moved
- The corresponding Rook must not have been moved.
In these cases “CASTLING IS NOT POSSIBLE”
The King is in Check
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The King is in Check for Re4 action. Black can’t castle on the Queenside. |
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White is in Check for Cd3 action. White can’t castle on the Kingside. |
Annoying Pieces
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No obstacle can be placed between the King and the Rook The path between the King and each Rook is not free. There are own pieces on both paths, so neither castling on the Queenside nor castling on the Kingside are possible. |
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The path between the King and the Rook is not free. A rival annoying piece prevents us from castling on the Kingside |
Threatened squares
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If any of the squares in the path of the King is threatened by an enemy piece, castling is not possible. In this case the King would be left in check. 1… 0-0-0 is not possible |
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The f1-square in the King’s path is threatened by the . 1. 0-0 is not possible |
The King or the Rook have already moved.
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| The King has already moved 1…. 0-0-0 is not possible |
The King has been moved 1. 0-0 is not possible |
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| The Rook has been moved 1. … 0-0-0 is not possible |
The Rook has been moved 1. … 0-0 is not possible |