Settings
Appearance
Theme
High contrast
Stronger borders and highlights (WCAG assist)
Board theme
Coordinates
Sounds
Synthesized — no downloads
Haptics
Vibration on mobile moves
Coach voice
Reads Coach replies aloud (system TTS)
Gameplay
Always promote to queen
Skip the promotion picker
Engine
Stockfish 18 (lite NNUE) running in your browser
Analysis lines · 3
Review depth · 14
Higher = slower, sharper reviews
Diagnostics
AI agents
The Local Coach works with no key. Add one for full LLM agents.
Provider
Keys live only in this browser's storage and are sent directly to the provider — Vishnu has no server and never sees them.
Linked usernames
Used to import games and detect which side you played
Lichess username
Chess.com username
Your data
Everything is stored locally in this browser (IndexedDB)
Server backup
When Vishnu runs on your own server, back up games, reviews and training state to its storage volume
Backup token
Must match the server's BACKUP_TOKEN environment variable