Search found 134 matches

by gaard
Thu Jan 07, 2021 2:36 am
Forum: Computer Chess Club: General Topics
Topic: BMI2 vs AVX2 (Stockfish versions)
Replies: 8
Views: 687

Re: BMI2 vs AVX2 (Stockfish versions)

Hi everybody, Is there a difference between the two? Is one instruction set faster than the other? My CPU (10900k) supports both of them. Thx. I have a an i7-9750H and the AVX2 compile is approximately 3% slower for this CPU, after testing by running the benchmark 30+ times for each compile and com...
by gaard
Thu Dec 17, 2020 1:18 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Position Causes Stockfish and Komodo To Crash
Replies: 135
Views: 9782

Re: Position Causes Stockfish and Komodo To Crash

So, if you abandon your crusade about the only proper and right way, There is a right way and a wrong way here - which is why input validation has been standard practice in software engineering for decades. Except apparently some chess engine programmers, people have gotten that message. Just add a...
by gaard
Mon Dec 14, 2020 6:28 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: Stockfish 200902 (Stockfish 12) vs Stockfish 201212
Replies: 5
Views: 637

Re: Stockfish 200902 (Stockfish 12) vs Stockfish 201212

Score of Stockfish 200902 vs stockfish 201212: 48 - 164 - 812 [0.443] ... Stockfish 200902 playing White: 8 - 140 - 364 [0.371] 512 ... Stockfish 200902 playing Black: 40 - 24 - 448 [0.516] 512 ... White vs Black: 32 - 180 - 812 [0.428] 1024 Elo difference: -39.5 +/- 9.5, LOS: 0.0 %, DrawRatio: 79....
by gaard
Mon Dec 14, 2020 5:36 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: Stockfish 200902 (Stockfish 12) vs Stockfish 201212
Replies: 5
Views: 637

Re: Stockfish 200902 (Stockfish 12) vs Stockfish 201212

Score of Stockfish 200902 vs stockfish 201212: 45 - 147 - 712 [0.444] ... Stockfish 200902 playing White: 8 - 127 - 317 [0.368] 452 ... Stockfish 200902 playing Black: 37 - 20 - 395 [0.519] 452 ... White vs Black: 28 - 164 - 712 [0.425] 904 Elo difference: -39.4 +/- 10.2, LOS: 0.0 %, DrawRatio: 78....
by gaard
Mon Dec 14, 2020 3:41 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Position Causes Stockfish and Komodo To Crash
Replies: 135
Views: 9782

Re: Position Causes Stockfish and Komodo To Crash

Someone recently wasted their time writing up 20 paragraphs showing how they could "exploit" Stockfish into crashing.... If you send a chess engine garbage, you should expect garbage. If you don't know it is garbage, then maybe a GUI should be doing it for you. The above has been affirmed many time...
by gaard
Mon Dec 14, 2020 3:17 am
Forum: Computer Chess Club: General Topics
Topic: Queens Gambit
Replies: 14
Views: 1358

Re: Queens Gambit

I enjoyed it, as did my wife. It is a good engaging story. But I think it is not realistic about OTB chess in a lot of ways. For example: 1. You don't get to be a strong player by studying openings. Although later in the series she does talk about studying the middlegame/endgame. 2. Very few player...
by gaard
Mon Dec 14, 2020 3:05 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: Stockfish 200902 (Stockfish 12) vs Stockfish 201212
Replies: 5
Views: 637

Re: Stockfish 200902 (Stockfish 12) vs Stockfish 201212

# PLAYER : RATING POINTS PLAYED (%) 1 stockfish 201212 : 22.4 307.0 547 56.1% 2 Stockfish 200902 : -22.4 240.0 547 43.9% White advantage = -69.14 Draw rate (equal opponents) = 50.00 % 547 of 1024 games finished. PGN: will follow when tournament complete
by gaard
Mon Dec 14, 2020 1:23 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: Stockfish 200902 (Stockfish 12) vs Stockfish 201212
Replies: 5
Views: 637

Re: Stockfish 200902 (Stockfish 12) vs Stockfish 201212

Score of Stockfish 200902 vs stockfish 201212: 22 - 63 - 225 [0.434] ... Stockfish 200902 playing White: 4 - 58 - 93 [0.326] 155 ... Stockfish 200902 playing Black: 18 - 5 - 132 [0.542] 155 ... White vs Black: 9 - 76 - 225 [0.392] 310 Elo difference: -46.2 +/- 19.9, LOS: 0.0 %, DrawRatio: 72.6 % 31...
by gaard
Mon Dec 14, 2020 12:20 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: Stockfish 200902 (Stockfish 12) vs Stockfish 201212
Replies: 5
Views: 637

Re: Stockfish 200902 (Stockfish 12) vs Stockfish 201212

# PLAYER : RATING POINTS PLAYED (%) 1 stockfish 201212 : 28.6 90.5 157 57.6% 2 Stockfish 200902 : -28.6 66.5 157 42.4% White advantage = -93.33 Draw rate (equal opponents) = 50.00 % 157 of 1024 games finished. PGN: https://drive.google.com/file/d/1UZGPGnYRXCevSuVchubTpZI3cAgQEmOV/view?usp=sharing
by gaard
Sun Dec 13, 2020 11:46 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: Stockfish 200902 (Stockfish 12) vs Stockfish 201212
Replies: 5
Views: 637

Stockfish 200902 (Stockfish 12) vs Stockfish 201212

Threads=1 Contempt=0 Analysis Contempt=Off Hash=128 TC=60"+1" Positions: swapped Openings: 2moves_v2.pgn syzygy: 3-4-5 CPU: i7-9750H cutechess-cli: -resign movecount=5 score=900 # PLAYER : RATING POINTS PLAYED (%) 1 stockfish 201212 : 24.6 40.5 72 56.3% 2 Stockfish 200902 : -24.6 31.5 72 43.8% White...