New Classification System in Game Review
Hi all!
We have released some really cool changes to Move Classifications in Game Review. The general goal is to have our classifications more accurately reflect how humans think and talk about the game.
- Improved Blunder Classification - It used to be that if the engine evaluation went down a lot, then you’d get a blunder. However, this isn’t how humans tend to evaluate. Engine evals can drop due to weird positional considerations that are hard to understand and require long-term precise play from your opponent to punish. In contrast, blunders are typically considered very immediate and concrete. The new blunder definition requires your move to lose material or allow a forced checkmate, in addition to the large drop in engine eval.
- New Miss Classification - Sometimes a move is bad not because something went horribly wrong with your own position, but because you failed to punish your opponent’s bad move. For example: you’re in an even game, your opponent gives you the opportunity to fork and win a piece, but you just make a normal continuing move as if nothing happened. These cases will be covered by a new classification called Miss, which will be denoted with a Ø glyph.
As always, would love to hear your feedback and let us know if you find any bugs! 
