CHESS40 العربية

Castling

The king's one big move

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Step 1

Castling moves two pieces at once: the king steps two squares toward a rook, and the rook jumps to the king's other side. It tucks the king away and brings the rook into play.

White: King e1, Queen d2, Rook a1, Rook h1, Bishop e3, Bishop e2, Knight c3, Knight f3, Pawn e4, Pawn d3, Pawn a2, Pawn b2, Pawn c2, Pawn f2, Pawn g2, Pawn h2. Black: King e8, Queen d7, Rook a8, Rook h8, Bishop e7, Bishop e6, Knight c6, Knight f6, Pawn a7, Pawn b7, Pawn c7, Pawn f7, Pawn g7, Pawn h7, Pawn d6, Pawn e5.a8b7c6d5e4f3g2h1

Step 2

White castles on the king's side; Black castles on the queen's side.

White: King e1, Queen d2, Rook a1, Rook h1, Bishop e3, Bishop e2, Knight c3, Knight f3, Pawn e4, Pawn d3, Pawn a2, Pawn b2, Pawn c2, Pawn f2, Pawn g2, Pawn h2. Black: King e8, Queen d7, Rook a8, Rook h8, Bishop e7, Bishop e6, Knight c6, Knight f6, Pawn a7, Pawn b7, Pawn c7, Pawn f7, Pawn g7, Pawn h7, Pawn d6, Pawn e5.a8b7c6d5e4f3g2h1
Before
White: King g1, Queen d2, Rook a1, Rook f1, Bishop e3, Bishop e2, Knight c3, Knight f3, Pawn e4, Pawn d3, Pawn a2, Pawn b2, Pawn c2, Pawn f2, Pawn g2, Pawn h2. Black: King c8, Queen d7, Rook d8, Rook h8, Bishop e7, Bishop e6, Knight c6, Knight f6, Pawn a7, Pawn b7, Pawn c7, Pawn f7, Pawn g7, Pawn h7, Pawn d6, Pawn e5.a8b7c6d5e4f3g2h1
After

The moves: 1. O-O O-O-O

Step 3

White to play: castle on the king's side (move the king two squares).

White: King e1, Queen d2, Rook a1, Rook h1, Bishop e3, Bishop e2, Knight c3, Knight f3, Pawn e4, Pawn d3, Pawn a2, Pawn b2, Pawn c2, Pawn f2, Pawn g2, Pawn h2. Black: King e8, Queen d7, Rook a8, Rook h8, Bishop e7, Bishop e6, Knight c6, Knight f6, Pawn a7, Pawn b7, Pawn c7, Pawn f7, Pawn g7, Pawn h7, Pawn d6, Pawn e5.a8b7c6d5e4f3g2h1

White to move.

Show the answer

Solution: 1. O-O

Step 4

Castling is not allowed if the king or that rook has moved before, if the king is in check, or if the king would pass through or land on an attacked square.

Step 5

Can White castle here?

White: King e1, Rook a1, Rook h1. Black: King e8, Rook e2.a8b7c6d5e4f3g2h1
  1. No: the king is in check
  2. Yes, on either side
  3. Only on the queen's side
Show the answer

Answer: No: the king is in check

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