Free online Chess server. Play Chess now in a clean interface. No registration, no ads, no plugin required. Play Chess with the computer, friends or random opponents.
Play
Create a game Tournament Simultaneous exhibitions
Learn
Chess basics Puzzles Practice Coordinates Study Coaches
Watch
Lichess TV Current games Broadcasts (beta) Video library
Community
Players Teams Forum Questions & Answers
Tools
Analysis board Board editor Import game Advanced search
Sign in
Reconnecting
  1. Forum
  2. Lichess Feedback
  3. Playing against cheater in correspondence

lichess.org/sFBZl8j59Jz6

He has been flagged for computer assistance but the game is still going

You can just resign. It won't affect your rating.