Freeware against commercial chess software: Arena 3.5.1 vs Chessbase Fritz 17

I already know these links, but thx! (I actually have almost 500 engines in my pc! )

And also Fire 8 has released 5 days ago! It stronger than fire 7.1 about 130-140 elo!!

Yes, there is Fire 8 on my blitz. You must choose only the best engines for the tournament, or it will be impossible to finish it. Publish your cross-table and best games on a embedded game player on your page....  

I didn't have so much time.

OK,

Fire 8 it's interesting because it's not a simple Stockfish derivate.  Add also Killfish 1.4 Hybrid and Apha Sub Zero to your list, they are very strong for me.

Watch also Forchess.ru for find strong engines

Can you give the link of Killfish?? I can't find the link.

k thx

How to add book in Arena?

It accepts .abk opening libraries from the menu Opening Books (then enable it to use in all engines details) or inside every engine configuration (If available) using .bin opening libraries 

Can I join any one?

Join opening books? Yes.

hi, long time not active here.

Just updated Super Blitz 32  Too many draws by Stockfish 13!  Eman 6.94 is the new winner, so I have updated also the NNUE from default (very old) to the last one.

Yes, you can find here https://ru.wikipedia.org/wiki/Killfish 

Finally Stockfish 13, with latest NNUE, is first! Fat Fritz 2.0 (Chessbase's illegal Stockfish clone) isn't 1th but only 10th

there is ff 2.1

FF2.1 It's not number one, AGAIN. Every time they update the clone, there is already a Stockfish 13-dev (and an updated NNUE) stronger

Just updated SuperBlitz32 with SlowChess 2.5 using the same new NNUE of latest Stockfish-DEV, and it is much stronger, so the  other TOP engines have lost some points.

FF2.1 is just a clone of the Latest dev versions of SF.