Castling and King Safety

Learn the significance of castling and the importance of ensuring king safety.

Castling Rules

Castling is a special move that moves the King and Rook simultaneously.

There are kingside castling (short castling) and queenside castling (long castling).

Castling moves the King to a safe position while activating the Rook.

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注目マス: e1, g1, h1, c1, a1

Castling Rulesの図解

💡Key Points

  • Special simultaneous move of King and Rook
  • Kingside (O-O) and Queenside (O-O-O)
  • King safety and Rook activation
  • One-time precious move opportunity

Castling Conditions

Several conditions must be met to perform castling.

Neither King nor Rook has moved, King is not in check, no check along King's path, no pieces between King and Rook.

Castling is only possible when all these conditions are satisfied.

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注目マス: g1, f1, h1

Castling Conditionsの図解

💡Practical Tips

  • King and Rook in original positions
  • King not in check
  • King's movement path is safe
  • No pieces between King and Rook

Kingside vs Queenside

Kingside castling (O-O) moves King to g1 (or g8) and Rook to f1 (or f8).

Queenside castling (O-O-O) moves King to c1 (or c8) and Rook to d1 (or d8).

Kingside is faster to execute, while Queenside provides better Rook activation.

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注目マス: e1, g1, c1

Kingside vs Queensideの図解

💡Key Points

  • Kingside: King→g1, Rook→f1
  • Queenside: King→c1, Rook→d1
  • Kingside is easier to execute
  • Queenside better for Rook activation

Strategic Value of Castling

Castling is an important part of development, achieving King safety and piece harmony simultaneously.

Early castling is generally recommended, moving the King to safety in preparation for central battles.

After castling, Rooks are connected, King-side defense is strengthened, and preparation for middlegame is complete.

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注目マス: g1, h1, f1, g8, h8, f8

Strategic Value of Castlingの図解

💡Practical Tips

  • Execute early as part of development
  • King safety is top priority
  • Rook connection and activation
  • Preparation for middlegame complete
🎉

Congratulations on completing Chapter 3!

You've mastered basic chess development principles. Let's apply this knowledge in practice.