testing Ethereal 13.50NN x64

Stockfish 14.1NN x64          3623   32.0-68.0   perf=3492   [G.S.]
LCZero 0.28.0 Cudnn (610000)  3604   00.0-00.0   perf=xxxx   [X.X.]  Ethereal 13.75 is released!!
Komodo Dragon 2.5 x64         3586   36.0-64.0   perf=3486   [G.S.]
Komodo Dragon 2.5 x64 (MCTS)  3542   41.0-59.0   perf=3479   [G.S.]
Revenge 2.0NN x64             3470   52.0-48.0   perf=3484   [G.S.]
SlowChess Blitz 2.7NN x64     3458   52.0-48.0   perf=3472   [G.S.]
Koivisto 7.0NN x64            3443   52.0-48.0   perf=3457   [G.S.]
RubiChess 2.2NN x64           3396   64.0-36.0   perf=3496   [G.S.]
Seer 2.4.0NN x64              3386   60.5-39.5   perf=3460   [G.S.]
Nemorino 6.00 x64 NNUE        3379   60.5-39.5   perf=3453   [G.S.]
Igel 3.0.5NN x64              3377   63.5-36.5   perf=3473   [G.S.]