Game
AIChess Game
Free chess in your browser. Drag-and-drop pieces, undo, move history, hints. Beat 3 levels of AI or play locally with a friend. No signup, mobile + keyboard ready.
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Black Thinking...87654321
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White Thinking...Move History
Have feedback? Report bugs, suggest features, or share your thoughts — we read them allWhat is Chess?
Chess is the ultimate strategy board game that has captivated minds for over 1,500 years. Two players command armies of 16 pieces each, maneuvering across a 64-square board with the goal of checkmating the opponent's king. Our online chess game features a powerful AI opponent using the Minimax algorithm with alpha-beta pruning, ensuring challenging gameplay at all skill levels. Whether you're a beginner learning the basics or an experienced player honing your tactics, this free chess game offers the perfect platform to play, learn, and improve.
Game Features
- Play vs Computer with 3 difficulty levels (Easy, Medium, Hard)
- 2-Player local mode to play with friends
- Intelligent AI using Minimax with alpha-beta pruning
- Piece-Square Tables for realistic computer play style
- Drag-and-drop and click-to-move piece control
- Legal move highlights showing valid squares
- Captured pieces tracking for both players
- Material advantage indicator
- Complete move history in algebraic notation
- Hint system suggesting best moves
- Undo moves (both player and computer moves)
- Flip board to view from either side
- Pawn promotion with piece selection
- Check, checkmate, and draw detection
- Threefold repetition and fifty-move rule
- Export games in PGN format
- Sound effects for moves, captures, and check
- Dark mode support
- Fully responsive design for all devices
- No registration required
How to Play Chess
- Select game mode: vs Computer or 2 Players
- Choose your color (White or Black) and difficulty level
- Click or drag a piece to see legal moves highlighted
- Move pieces to capture opponents and control the board
- Protect your King - when in check, you must escape
- Checkmate the opponent's King to win the game
- Use Hint button if you're stuck - it shows the best move
- Undo mistakes and learn from them
Chess Tips & Strategy
- Control the center - d4, d5, e4, e5 are the most important squares
- Develop your pieces early - bring out knights and bishops before attacking
- Castle early to protect your king and activate your rook
- Don't move the same piece twice in the opening without good reason
- Connect your rooks - develop all minor pieces first
- Think ahead - consider your opponent's possible responses
- Look for tactics - pins, forks, skewers, and discovered attacks
- Trade pieces when ahead in material, avoid trades when behind
- Control open files with your rooks
- In endgames, activate your king - it becomes a fighting piece
- Pawns can't move backward - advance them carefully
- Knights are better in closed positions, bishops in open positions
Frequently Asked Questions
Our chess AI uses the Minimax algorithm with alpha-beta pruning to evaluate positions and find the best moves. It considers piece values, positional advantages using Piece-Square Tables, and looks several moves ahead depending on difficulty level. Easy mode looks 2 moves ahead, Medium 3 moves, and Hard 4 moves deep.
Each player controls 16 pieces: 1 King, 1 Queen, 2 Rooks, 2 Bishops, 2 Knights, and 8 Pawns. White moves first, then players alternate. The goal is to checkmate the opponent's King (attack it with no escape). Pieces move differently: Kings move one square any direction, Queens any direction any distance, Rooks horizontally/vertically, Bishops diagonally, Knights in an L-shape, and Pawns forward (capturing diagonally).
Castling is a special move where the King and a Rook move simultaneously. The King moves two squares toward a Rook, and that Rook jumps over to the other side of the King. Conditions: Neither piece has moved before, no pieces between them, the King isn't in check, and the King doesn't pass through or land on an attacked square. It's great for King safety!
En passant is a special pawn capture. When an opponent's pawn advances two squares from its starting position and lands beside your pawn, you can capture it 'in passing' on the next move only. Your pawn moves diagonally to the square the enemy pawn passed through, removing it from the board.
When a pawn reaches the opposite end of the board (8th rank for White, 1st rank for Black), it must be promoted to another piece: Queen, Rook, Bishop, or Knight. Most players choose Queen since it's the most powerful piece. In our game, a dialog appears to let you choose your promotion piece.
Chess can end in a draw through several conditions:
• Stalemate: Player to move has no legal moves but isn't in check
• Threefold repetition: Same position occurs three times
• Fifty-move rule: 50 moves by each player without pawn moves or captures
• Insufficient material: Neither side can checkmate (e.g., King vs King)
• Agreement: Players agree to a draw (not in this game)
• Stalemate: Player to move has no legal moves but isn't in check
• Threefold repetition: Same position occurs three times
• Fifty-move rule: 50 moves by each player without pawn moves or captures
• Insufficient material: Neither side can checkmate (e.g., King vs King)
• Agreement: Players agree to a draw (not in this game)
Improve your chess by:
• Learning basic tactics (forks, pins, skewers)
• Studying opening principles, not memorizing lines
• Practicing endgames - know how to checkmate with basic pieces
• Analyzing your games - use undo to see where you went wrong
• Playing regularly against the computer at increasing difficulty
• Using the hint feature to learn strong moves
• Thinking before moving - consider opponent's threats
• Learning basic tactics (forks, pins, skewers)
• Studying opening principles, not memorizing lines
• Practicing endgames - know how to checkmate with basic pieces
• Analyzing your games - use undo to see where you went wrong
• Playing regularly against the computer at increasing difficulty
• Using the hint feature to learn strong moves
• Thinking before moving - consider opponent's threats
PGN (Portable Game Notation) is a standard text format for recording chess games. It includes move notation in algebraic format (e.g., e4, Nf3, O-O). You can copy your game's PGN using the PGN button and share it, import it into chess software, or analyze it with chess engines.
Yes! Our chess game is fully responsive and works on all devices - smartphones, tablets, and desktops. The interface adapts to your screen size, and you can drag pieces or tap to move. Touch controls are optimized for mobile play.
• Easy: AI looks 2 moves ahead - good for beginners learning the game
• Medium: AI looks 3 moves ahead - balanced challenge for casual players
• Hard: AI looks 4 moves ahead - serious challenge using advanced evaluation
The AI also uses Piece-Square Tables to make positionally sound moves at all levels.
• Medium: AI looks 3 moves ahead - balanced challenge for casual players
• Hard: AI looks 4 moves ahead - serious challenge using advanced evaluation
The AI also uses Piece-Square Tables to make positionally sound moves at all levels.
Click the Hint button (lightbulb icon) during your turn. The game will calculate the best move using the same AI that the computer uses, then highlight the suggested move on the board. A toast message shows the move in algebraic notation. Use hints to learn better moves and understand good positions!
Currently, the game is designed for mouse/touch interaction:
• Click a piece to select it, then click destination
• Or drag and drop pieces directly
• Legal moves are highlighted in green
• Capture squares show a ring indicator
All actions (new game, undo, flip, hint) are accessible via buttons.
• Click a piece to select it, then click destination
• Or drag and drop pieces directly
• Legal moves are highlighted in green
• Capture squares show a ring indicator
All actions (new game, undo, flip, hint) are accessible via buttons.
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