Mode: VS AI · MEDIUM Turn: — Score: 0
White captured:
Black captured:

How to Play Castling

Castling is a free online chess game with a royal-court aesthetic — burgundy and gold squares framed in brushed brass, with candlelit corners and ornate piece glyphs. Click or tap a piece of your color to see its legal moves highlighted, then click a destination to make the move. All standard chess rules are enforced: castling kingside and queenside, en passant, pawn promotion, fivefold repetition draws (a third repetition just flashes a warning), the 50-move rule, stalemate, and checkmate detection. You can also drag a piece straight to its square. When you capture an enemy piece, the board gives way to a short, cinematic 3D fight in a torchlit throne hall: both chessmen transform into characters fitting their piece, the capturing piece attacks with one of its three powers, and the captured character breaks apart. Tap the fight to skip it, or use the Fights button to make the fights quicker or turn them off; on reduced-motion settings or devices without WebGL a compact on-square spark effect plays instead. Checkmate ends the game with a finale of its own: every piece you have left charges the losing king, surrounds him and levels its weapons at him until he kneels.

Tips & Strategy

Frequently Asked Questions

Why is the Beginner AI sometimes playing random-looking moves?
The Beginner tier is calibrated for kids and adults who are just learning chess. It plays 60% random legal moves and 40% best-capture-finding moves, with no look-ahead beyond one ply. This is deliberate — it gives a learner a real chance of winning, which is what keeps new chess players engaged. Move up to Easy or Medium once you're consistently winning Beginner matches.
How do I castle?
Click your king first, then click two squares toward the rook on the side you want to castle. The legal-move highlight will show the king's two-square jump if castling is legal — king and rook both unmoved, no pieces between them, king not currently in check, and the king's path not through any attacked square. Castling kingside (short) goes toward the h-file rook; queenside (long) goes toward the a-file rook.
What is en passant?
When an enemy pawn moves two squares from its starting rank and lands directly next to your pawn, you can capture it as if it had only moved one square — on your very next move. Click your pawn, then click the empty square diagonally behind the enemy pawn. The legal-move highlight will show the en-passant capture as a small ring around that empty square. If you don't capture en passant immediately, you lose the right to do so.
What's the difference between checkmate, stalemate, and a draw by repetition?
Checkmate — the side-to-move's king is in check and has no legal move to escape. Game ends, opponent wins. Stalemate — the side-to-move has no legal move but is not in check. Game ends in a draw. Threefold repetition — the same board position has occurred three times; the board flashes REPETITION! as a warning and play continues. Fivefold repetition is an automatic draw. The 50-move rule: 100 plies (50 moves per side) elapse with no capture and no pawn move; automatic draw.
What happens in the capture fights?
Each capture cuts to a 3D fight in a torchlit throne hall. White pieces are carved marble with gold trim and Black pieces are obsidian with glowing ember veins. Both chessmen first transform into characters: the Pawn becomes a Footsoldier with shield and spear, the Knight a horse-headed Warhorse with a lance, the Bishop an Oracle who wields light, the Rook a Siege Golem, the Queen a Sovereign with twin rapiers, and the King a Monarch with a greatsword. Each character has three attacks, and its move's name appears on screen. Which one it uses depends on the piece it is capturing, and a piece never uses the same attack twice in a row, so a Pawn might vault, throw a javelin or charge with shield and spear. The capturing piece always wins, and the captured character breaks apart. Tap the fight, or press Space, Enter or Escape, to skip it. The Fights button (or the F key) switches between Epic, Quick (the same fight at a faster pace) and Off. With reduced motion turned on, or without WebGL, a short spark effect plays on the square instead.
What happens when someone gives checkmate?
Checkmate gets a scene of its own before the result appears. Every piece the winner still has on the board appears around the hall and transforms into its character, then they all charge the losing king in the middle, surround him and level their weapons at him. Beams of light join every weapon to the king, he sinks to his knees, his crown falls, and CHECKMATE slams onto the screen. Tap once to jump to that moment and again to end the scene, or press Space, Enter or Escape. It follows the Fights setting: Quick plays it faster, and Off, reduced motion or a device without WebGL goes straight to the result. Phones show up to nine of the winner's pieces, tablets and slower computers up to eleven.

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