Home
Play
Puzzles
Learn
Watch
News
Social
More
Sign Up
Log In
English
Light UI
Dark UI
Help
Sign Up
Log In
simmy7g
simcha grieve
Sep 29, 2023
Jul 1, 2015
73
417
Gift
Challenge
Message
More
Professor of Algebraic Topology @ Columbia University
New to chess but ready to learn!
Stats
Awards