AI Chess Master | HTML5 AI-Powered Game

AI Chess Master is a fully-featured, beautifully designed chess game built entirely with HTML5, CSS3, and vanilla JavaScript — no frameworks, no dependencies, no database required. Just upload to any web server or open locally and play.

All core features work out of the box with no external services: the AI opponent (Minimax with Alpha-Beta pruning, 4 difficulty levels), full chess rules (castling, en passant, pawn promotion), 10 achievements, player statistics, chess clock, sound effects, background music, move history, evaluation bar, and ad placeholders — everything runs entirely in the browser with zero server requirements.

Challenge a powerful AI opponent spanning 4 difficulty levels from Beginner to Expert. Every chess rule is implemented: castling (kingside & queenside), en passant, and pawn promotion with an interactive piece selector.

Features

• 4 Difficulty Levels — Beginner (depth 1) to Expert (depth 4)
• Full Chess Rules — Castling, en passant, pawn promotion with piece selection
• Smart AI Engine — Minimax algorithm with alpha-beta pruning
• Real-time Evaluation Bar — Visual position analysis
• Move History — Algebraic notation with check/checkmate symbols
• Undo Moves — Full state restoration including castling rights
• Flip Board — 180-degree board rotation
• 10 Achievements — Unlockable & saved in localStorage
• Player Statistics — Wins, losses, streaks, captures
• Chess Clock — 10-minute timer for each player
• Sound Effects — Move, capture, check, win/lose sounds (Web Audio API)
• Background Music — Toggleable melody (no audio files needed)
• Ad Placeholders — Banner & interstitial ready for monetization
• Responsive Design — Desktop, tablet & mobile friendly
• Touch Controls — 44px minimum tap targets
• Cross-browser — Chrome, Firefox, Safari, Edge
• Zero Dependencies — Pure HTML/CSS/JS, no libraries

Optional Enhancement: Claude AI Analysis

The game also includes an optional AI-powered move analysis and hint feature powered by Anthropic’s Claude API. This is not required to use or enjoy the game — the core chess experience, AI opponent, and all features work perfectly without it.

⚠ Paid Subscription Required: The Anthropic (Claude) API requires a separate paid subscription or credits from Anthropic. These are not included with this purchase. Without a valid API key, the analysis and hint features gracefully fall back to displaying the position evaluation score.