## Representation Matters for Mastering Chess: Improved Feature Representation in AlphaZero Outperforms Switching to Transformers
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https://www.aiml.informatik.tu-darmstadt.de/papers/czech24representation.pdf>
From 20 seconds skimming through, they claim that adding those planes to standard resnet planes outperform (some definition of) switching to transformers:
* grouped mask of all P1 pieces
* grouped mask of all P2 pieces
* Checkerboard
* 5 planes filled with the same value: number of {PAWN, KNIGHT, BISHOP, ROOK, QUEEN} we have
* 5 planes filled with the same value: diff of {PAWN, KNIGHT, BISHOP, ROOK, QUEEN} "we" and "opponent" has
* All ones if there are opposite color bishops
* all pieces giving check
+150 Elo