Implement proper 'Mate in X' and checkmate detection#217
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…fish analysis - Display mate values as +M2/-M2 instead of +100/-100 to show whose mate it is - Add independent checkmate detection that works without Stockfish analysis - Fix checkmate positions showing "..." instead of "Checkmate" - Set Maia win rate to 0%/100% for mate and checkmate positions - Support both client-side Stockfish and backend API evaluation sources - Maintain backward compatibility with normal centipawn evaluations 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
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- Improve line breaks and indentation in MaiaModelSettings.tsx - Fix text wrapping in SoundSettings.tsx - Apply consistent code formatting per ESLint/Prettier rules 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
kevinjosethomas
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Summary
This PR resolves issue #211 by implementing proper mate display and checkmate detection for Stockfish analysis:
• Mate Sign Display: Shows
+M2/-M2instead of justM2to indicate whose mate it is• Checkmate Detection: Fixed positions showing "..." instead of "Checkmate"
• Independent Detection: Added checkmate detection that works without Stockfish analysis
• Maia Win Rate: Shows 0%/100% for mate and checkmate positions even when Stockfish data is missing
Test plan
+M2displays for white mate in 2,-M3for black mate in 3🤖 Generated with Claude Code