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, threefold and fivefold repetition draws, the 50-move rule, stalemate, and checkmate detection. When you capture an enemy piece, a brief battle animation plays on the destination square — five randomized variants give the capture a satisfying flourish before the captured piece dissolves.

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; either side can claim a draw. Fivefold repetition is an automatic draw. The 50-move rule: 50 plies (25 moves per side) elapse with no capture and no pawn move; automatic draw.