Play, review, improve
Endgame OS
Endgame OS is a chess training app where you play against Stockfish, review your mistakes after the game, and track your progress on your profile and city leaderboard.
Step 1
Play a game
Step 2
Analyze mistakes
Step 3
Save progress
Example Session
King and rook conversion
92%
Best
Keep the king boxed.
Mistake
Check before drifting.
Weakness
Forcing moves.
AI Coach Review
After the game, click Analyze Game to see your biggest mistakes and better moves.
Prototype ready
Live Stockfish Opponent
You play White. Pick Casual, Focused, or Brutal and the AI replies as Black.
Prototype ready
City Leaderboards
Create a profile, save finished games, and compare results with players from your city.
Prototype ready
Coming Later
Pro tools are previewed, not required
You can use the core app now. Pro buttons only explain future features; they do not charge money.