Chess960 perft program written in C++14.
make should build a fast binary. If not then remove the -DPEXT flag and try again.
make
-DPEXT
lastemperor -perft "r3k2r/p1ppqpb1/bn2pnp1/3PN3/1p2P3/2N2Q1p/PPPBBPPP/R3K2R w KQkq -" 6 1024
GPLv3