For an added datapoint: I've managed to get a pretty fast perft using bitboards. Code is all open source and available here: https://github.com/peterellisjones/rust_move_gen

For the initial position I get 0.79 seconds for P6 single threaded, no hash vs 0.655 for qperft compiled with -O3. This goes ...

I recently open-sourced a perft generation tool I'm building in Rust as a stepping-stone to building my own engine that I think is reasonably fast. I get perft(6) in about 0.21 seconds on my 2015 2.5Ghz i7 Macbook Pro. I'm cheating a bit because it's multi-threaded but when it was single-threaded ...