It took about 4 hours because I didn’t just add the feature, I had to carefully integrate it into a pretty large Streamlit + chess PGN system without breaking anything. I was kinda stupid and ignored the MAIN ERROR which was in plain sight and struggled for 3 hours ;-; The main challenge was that PGN “TimeControl” data isn’t always clean or consistent, so I had to handle edge cases like missing values, weird formats, and games that don’t follow the usual “base+increment” pattern.

I added a classifier to turn raw time controls (like 60+0 or 600+5) into readable labels like Bullet, Blitz, Rapid, and Classical. This makes the overall experience more enjoyable…

For example, Bullet games naturally have more blunders, while Classical games tend to look much higher quality, so the guessing becomes more realistic and skill based instead of random.

Ok now time to take a break and touch grass :D