Tronsoft Checkers v1.4.8
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Open index.html to play. checkers.html is retained as a compatibility entry point.

Highlights
- American checkers mandatory captures and multi-jumps
- Human/AI play with five difficulty levels and Web Worker AI
- Transposition caching and improved positional evaluation
- True staged multi-jump animation
- Game Review / Replay with move-by-move navigation and autoplay
- Non-destructive Analysis Mode for hypothetical continuations
- AI move/hint explanations and graphical path arrows
- Coordinate or standard 1-32 checkers notation
- Achievements and expanded lifetime statistics/streak tracking
- Autosave/resume plus JSON game import/export
- Board themes, sound/volume, high contrast, reduced motion, board flip
- New Game setup, hints, undo, captured-piece display, manual


v1.4.2 stabilization:
- Hardened JSON import by validating and reconstructing legal move history; imported display text is never trusted.
- Correct alpha-beta transposition-table bounds (EXACT/LOWER/UPPER).
- Reduced Motion now removes JavaScript move/promotion delays.
- Analysis endings stay inside Analysis Mode.
- Achievements count human-controlled moves only.
- Human-vs-AI statistics are separated from local two-player games.
- Added roving arrow-key board navigation plus H/U/F shortcuts.


v1.4.8 display update:
- Full-window three-column game layout on desktop.
- Independently scrolling information and control sidebars.
- Larger viewport-aware board.
- Added wood grain, beveled squares, deeper frame, improved coordinates, and richer checker detailing.