Why do people blunder?



Brain fog from only having time to play when tired. Switching time controls and not engaging active thinking about changes in position. Only evaluating some of the elements in play and missing key factors due to this.

I had a game i think on 2023 that i had 100.0 accuracy because at the opening he blundered his queen
Brain fog from only having time to play when tired. Switching time controls and not engaging active thinking about changes in position. Only evaluating some of the elements in play and missing key factors due to this.
Totally this. But then I have some days when I’m just not sharp at all. Chess is helping me to see this. Interestingly I’m a morning person but I’ve noticed that I’m not necessarily that sharp at chess first thing. Last hour before bed is typically the time I have to play/study but it’s not the best time for my brain.