Principles · 2 min read
King safety: when to castle and when to wait
Castling takes the king off the central files and brings a rook toward the centre in one move. Many quick losses come from a king left on e1 or e8 after the centre opens.
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1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.Nf3 Be7 5.Bg5 O-O
A Queen's Gambit Declined. Black castles before the centre opens.
Judging a castled king
- Pawn cover: each pawn moved in front of the king is a target.
- Attackers: a bishop aimed at h7 or h2, with a queen or knight able to join, is the classic danger.
- Defenders: a knight on f3 or f6 guards the king well.
- Files: an open file near the king invites rooks.
Pawn moves near the king
h3 or h6 is usually safe, and keeps enemy pieces off g4 or g5. g3 or g6 is risky once the bishop that belongs on g2 or g7 has gone. f3 or f6 opens a diagonal to the king.
When not to castle
If the centre is closed, the king can wait while you develop. In the endgame the king belongs near the centre.
Key takeaways
- Castle before the centre opens.
- Every pawn move in front of your king is permanent.
Frequently asked questions
- Is it bad to castle into an attack?
- Yes. If several enemy pieces already aim at one wing, castle on the other side, or keep the king in the centre while the centre stays closed.
- Should I castle kingside or queenside?
- Kingside castling is quicker and usually safer. Castle queenside when you want a rook on the d-file at once and plan to push your kingside pawns at the enemy king.
Practise the related tactics
The ideas behind this
- King Safety (Castling)Castle early, then leave the pawns in front of your king alone.
- The 8th RankA king behind unmoved pawns can be mated on its back rank.
- Color ComplexesWhen a bishop is gone, the squares of its colour get weaker.