Perft world leaderboards + engine dev utilities

[Sapling]

I wanted to make a quick post about the recent developments on TGCT (The grand chess tree)

I've added various tools that I hope are useful for engine dev, specifically when building your move generator, including: FEN / PGN / Bitboard visualisers, an online WASM perft tool, and a CLI perft test suite.
https://grandchesstree.com/tools

I've also started work on 'perftwars' which is essentially a move generator leaderboard (still a WIP), so far it's ranked 13 popular move generators / engines. I've been especially impressed by mperft which clocked in at 171B nps on my test rig (multi threaded + hashing), truly insane performance.

https://grandchesstree.com/leaderboard

Will happily add any other (cpu for now) move generators / engines people want to see tested.

[abulmo2]

I've been especially impressed by mperft which clocked in at 171B nps on my test rig (multi threaded + hashing), truly insane performance.

Nice to see that mperft performance impressed you. I saw from the json files you ran mperft with the --bulk option. You should try the --nullmove option instead, that is faster, using tricks discussed here: viewtopic.php?t=86085.

[jasper.sinclair]

https://github.com/AriaKafie/chessnut

modernized:
https://github.com/FireFather/chessnut
perft 7
nodes 3195901860
time 5856 ms

also, possibly of interest:
https://github.com/FireFather/perft-times
(unfortunately not updated for 2 years)

[jasper.sinclair]

perft 7

https://github.com/rafid-dev/jet
6.30 s
507286009

https://github.com/lucametehau/CloverEngine
7.46 s
428405075

https://github.com/Hin-Yu-Evan-Fung/Mae ... ess-Engine
7.65 s
417764949

and as someone aleady suggested: Xiphos
7.33 s

[Sapling]

Thank you for the suggestions!

I've benchmarked all here:
https://grandchesstree.com/leaderboard

caps #7 789M nps
clover #9, 652M nps
xiphos #10, 621M nps
chessnut #16, 463M nps
maestro #19 401M nps

- Jet didn't pass my test suite, opened a GH issue https://github.com/rafid-dev/jet/issues/26

[Aleks Peshkov]

My engine petrel was originally designed with perft in mind. Current perft code is not heavily optimised as it updates some redundant chess data but it still relatively fast as it uses hash.

Syntax: "perft D". It can change hash size with standard UCI Hash setoption.