Puzzle of the dayWhite to play

Gukesh and Tan Zhongyi are Officially the World Championship Challengers


Calculating the Sharpness of Different Players

Pieces encoded as half-bytesrevoof

Adapting nnue-pytorch's binary position format for Lichess

Tan Zhongyi has won the 2024 Women's Candidates and will challenge Ju Wenjun for the Women's World Championship!

Join us and our hosts IMs Irene Sukandar, Laura Unuk and Eric Rosen for Round 14 of the Candidates now on Twitch and YouTube! With 17-year-old Gukesh in the lead of the Open, 4 players still in contention to win and all of them playing each other, today could be historic!

Watch Round 13 of the Candidates with us and our hosts IMs Irene Sukandar and Laura Unuk now on Twitch and YouTube! Get ready for a pivotal game in the three-way tied Open between leaders Ian Nepomniachtchi and Hikaru Nakamura & Tan Zhongyi vs Aleksandra Goryachkina in the Women's section among others.

The final rest day of the Open and Women's Candidates is over: Check out our Round 12 recap blog with annotations from GM Brandon Jacobson and IM / WGM Padmini Rout ahead of the penultimate round, which starts at 18:45 UTC today.

The European Women Chess Championship kicks off in less than 5 minutes in Rhodes, Greece, with 182 players from 35 countries participating! You can follow the games here.

Watch Round 12 of the Candidates with us and our hosts IM Irene Sukandar, IM Laura Unuk and GM Felix Blohberger on Twitch and YouTube. Current Open leader Nepomniachtchi takes on Praggnanandhaa and Women's leader Tan tries to defend her 1st place with Black against Salimova.

With just 3 rounds to go, Ian Nepomniachtchi and Tan Zhongyi are back in the sole lead of the Open and Women's Candidates, respectively. Find out what happened in Round 11 of the Candidates in our recap blog.