Variable-shift perfect hashing (fancy magic) is not especially slower than using pext/pdep, and in any case, there is little value in making move generation mor

Variable-shift perfect hashing (fancy magic) is not especially slower than using pext/pdep, and in any case, there is little value in making move generation more performant. A decent move generator using perfect hashing can run at 40 mnode/s, but Stockfish runs at about 1 mnode/s with a single thread (because of the other work it does). A quick application of Amdahl's law shows that the performance gain from speeding up move generation by any amount is negligible. In fact, with a transposition table and staged move generation, for many nodes only a fraction of possible moves are generated.