Search found 172 matches

by MMarco
Fri Feb 26, 2021 5:21 pm
Forum: Computer Chess Club: General Topics
Topic: I stumbled upon this article on the new Nvidia RTX GPUs
Replies: 68
Views: 13537

Re: I stumbled upon this article on the new Nvidia RTX GPUs

Here are some bench results with latest v27.0 Lc0 binary. There is a substancial NPS increase, especially with extra parameters: --max-collision-events=917 --max-collision-visits=1000 --max-out-of-order-evals-factor=2.4 They were suggested on Lc0 discord, and I found them to be elo gainer (about +5 ...
by MMarco
Thu Feb 25, 2021 11:47 am
Forum: Computer Chess Club: General Topics
Topic: Rybka vs Fat Fritz controversies
Replies: 33
Views: 1913

Re: Rybka vs Fat Fritz controversies

1) Rybka had clear improvements over any other chess engine at the time, while FF2 doesn't. 2) To this day, many people still acknowledge Vas's contributions despite all the controversies, while ASilver has never contributed one single game to Stockfish or Leela training. I agree. Rybka may or may ...
by MMarco
Fri Feb 19, 2021 12:04 am
Forum: Computer Chess Club: General Topics
Topic: Interesting read about Fat Fritz 2
Replies: 73
Views: 4969

Interesting read about Fat Fritz 2

An important message from open source chess organizations: https://lichess.org/blog/YCvy7xMAACIA80 ... -a-rip-off
by MMarco
Thu Feb 04, 2021 8:00 pm
Forum: Computer Chess Club: General Topics
Topic: NNs seem to solve the Gusev Qxe5!! easily.
Replies: 29
Views: 4966

Re: NNs seem to solve the Gusev Qxe5!! easily.

But Stockfish dev(12 November 2019) cannot solve it even after 35 billion nodes searched and 67 ply. It cannot even find the Qxe5 move. Stockfish is known for pruning. Stockfish doesn't "look for the best move", it instead "looks for a move that probably wasn't a bad move". Late move reductions fun...
by MMarco
Wed Feb 03, 2021 1:17 am
Forum: Computer Chess Club: General Topics
Topic: NNs seem to solve the Gusev Qxe5!! easily.
Replies: 29
Views: 4966

Re: NNs seem to solve the Gusev Qxe5!! easily.

If You do insignificant change like Ra1->b1 are NN engines still as fast? I reckon it would still see it. It is not storing exact positions like the *.lrn file of crafty but storing ideas with similar piece configuration on the board. But as a side note, using SF12+, I quickly fired up my available...
by MMarco
Wed Jan 20, 2021 1:09 am
Forum: Computer Chess Club: General Topics
Topic: GPU Engine List
Replies: 6
Views: 1078

Re: GPU Engine List

jshriver wrote:
Tue Jan 19, 2021 10:37 pm
Any other engines that utilize the GPU during play other than lc0 and derivatives?
Try Ceres, it is not a derivative of Lc0, but it uses the same nets: https://github.com/dje-dev/Ceres
by MMarco
Fri Jan 15, 2021 8:21 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: Lc0 - various size nets vs Stockfish 201225
Replies: 0
Views: 716

Lc0 - various size nets vs Stockfish 201225

Match: Lc0 - various size nets vs Stockfish 201225 modern Hardware: GTX 1660 Ti, Ryzen-7 3750H Time control: 20s + 0.5s (time forfeit disabled) Openings: TCEC superfinals 10-19 (500 pos.) + balsa_v500.pgn (500 pos.) bench (startpos 1.5s): Stockfish = 1,100,000 nps / J104.1-30 = 38 000 nps / 730730= ...
by MMarco
Sat Jan 09, 2021 6:52 am
Forum: Computer Chess Club: General Topics
Topic: Arasan20 testsuite VS 4 top solvers
Replies: 41
Views: 6127

Re: Arasan20 testsuite VS 4 top solvers

For this one Rd2 is also an easy win 65) Rc6-c8 3r2k1/6p1/B1R2p1p/1pPr1P2/3P4/8/1P3nP1/2KR4 w - - bm Rc8; id "arasan20.65"; c0 "Ruffian-Arasan, test game 2009"; HMMMMM. Not sure. Maybe! 1. Rd2 Ne4 2. Rd3 (of course there is Rd1 repeating) Nxc5! 3. Rxc5 Rxc5 4. dxc5 Rxd3 5. c6?? (stockfish's choice)...
by MMarco
Sat Jan 09, 2021 5:00 am
Forum: Computer Chess Club: General Topics
Topic: Arasan20 testsuite VS 4 top solvers
Replies: 41
Views: 6127

Re: Arasan20 testsuite VS 4 top solvers

HekaStockfish 261120 sees both moves as winning: [36] 3.13 a4 Rh8 a5 bxa5 bxa5 Tg8 De2 Df7 Cg5 Dd7 Fh3 Txh3 Cxh3 h6 Cf2 Fc8 c5 Da4 cxd6 cxd6 Tc6 Dxa5 Dc4 Fd7 Dxa6 Db4 Txd6 Tf8 Db6 Da3 Tc6 Fxc6 dxc6 Rh7 c7 Tc8 Db7 Da8 Dxa8 Txa8 Td8 Ta1+ Rg2 [36] 3.02 c5 Cxd5 c6 Fxc6 Txc6 Cxe3 Fxa6 Cxd1 Cg5 Rf8 h3 d5 ...
by MMarco
Sat Jan 09, 2021 2:51 am
Forum: Computer Chess Club: General Topics
Topic: Arasan20 testsuite VS 4 top solvers
Replies: 41
Views: 6127

Re: Arasan20 testsuite VS 4 top solvers

This one (#132) is solved by Crystal 3.0 [d]r2q1r2/1b2bpkp/p3p1p1/2ppP1P1/7R/1PN1BQR1/1PP2P1P/4K3 w - - 0 1 [25] 12.90 Df6+ Fxf6 gxf6+ Dxf6 exf6+ Rxf6 Fxc5 Tfe8 Txh7 d4 Fxd4+ e5 Fe3 Th8 Tgh3 Txh7 Txh7 Td8 Th4 Rg7 f4 exf4 Txf4 Te8 Rf2 Rg8 Td4 Rf8 Tc4 Te5 Tf4 f5 Fd4 Re7 Fxe5 Re6 d:26/55 1:Df6+ t:112....