Opponent Rating Change Calculator

Automatically looking up my past opponent’s current ratings

January 16, 2023 · 3 min

Calculating Centipawn Loss

Introduction I recently saw this tweet: Measuring performance by CPL instead of rating or result is a revelation! I’ve lost games to strong players where I have played well (low CPL), and beaten weaker players and played badly (high CPL). Should help see through the result / rating change to your true performance. pic.twitter.com/OwK146NI9k — Pascoe Rapacci (@prapacci) January 13, 2022 I’ve been trying to figure out a way to measure progress....

January 14, 2022 · 7 min

Splitting apart PGN variants

How I used pgn-extract to split a PGN into variants

November 16, 2021 · 7 min