TalkChess.com

There is some interaction probably between the two, but at alternate plies in this case, you do probcut when you have a very good position, but nullmove did not work because you need a tactical solution. (nullmoveing not very good if you have tactics) the search is then shortened a lot and your alph...

In Stockfish, I think it is more a case of some overlap with all the LMR rules. Razoring is done at depth < 2 and LMR for depth >= 3 so maybe either of these could incorporate depth = 2 (or LMR more of the razoring depths) Of course these reductions are still different in very many ways/subrules (of...

I still only have my old Athlon running so to compare I can try some very old programs, that are maybe more comparable to the programs playing in the game. Only 32 bit engines, because the operating system is 32 bit. I tried my Rebel 12 Betazoid personality and it finds 1. Bxh8, but at first with a ...

Thanks for looking into it Mike! You confirm more or less what I thought. The bench seemed good so that is a good start, and the hardware, cooling etc seem certainly up to the task. So if it is just a question of giving more hash, that is easy to do. At least for starters. I don't know if he has fou...

In reference to a question on Fishcooking from Branko , with a new 3950X, I was wondering if the guys here with Threadrippers could maybe check if the depths are okay. The bench result that Branko reported with 32 threads is impressive, but I should he not get deeper with Stockfish even if it is onl...

Thanks for running this! I think it is a good intermediate result, even though it is not the highest for Stockfish on your list, but there is always the error bars. This is likely very close to Stockfish 11 so in that respect the test is important. Thanks!

Betazoid II is holding on to Rxd3! Depth 17, after 1 hour 42 minutes 01:42:53.8 -0,41 17 1864586045 Rxd3 cxd3 Rf1 Rbd8 Unfortunately, this was also not yet completely stable because Betazoid II went back to Be4, but it lasted well into the 18th iteration. . . 00:07:01.6 -0,61 15 435903875 e4 Bxf4 B...

Betazoid II is holding on to Rxd3! Depth 17, after 1 hour 42 minutes

01:42:53.8 -0,41 17 1864586045 Rxd3 cxd3 Rf1 Rbd8

Ugh, I ran a bunch of engines on the position, several found it at Depth 7, some at Depth 6, and the rest were not noteworthy. Then Talkchess failed to load and I only got "confirm form resubmission" once, and Talkchess failed to load, and the post was lost in the ether. But I guess this new A/B ch...

If you compile with -modern instead of -BMI2 is that not the simplest, for Stockfish I mean? You avoid the bad PEXT/PDEP instructions that Gian-Carlo mentions in another post here, they are implemented (in ZEN I suppose, not all recent AMD processors?) but Stockfish has better solution doing it with...