Search found 156 matches

by elpapa
Thu Nov 17, 2016 12:33 am
Forum: Computer Chess Club: General Topics
Topic: Cursed win at TCEC
Replies: 296
Views: 241960

Re: Cursed win at TCEC

Evert wrote:There's simply no room for discussion.
And yet here we are on page eight.
by elpapa
Mon Nov 07, 2016 12:13 am
Forum: Computer Chess Club: General Topics
Topic: Official Stockfish 8 binaries removed from official site?
Replies: 2
Views: 755

Re: Official Stockfish 8 binaries removed from official site

Leto wrote:I was about to start my testing of SF8 x64 12CPU for CEGT 40/4 but https://stockfishchess.org/ has me downloading Stockfish 7 instead of Stockfish 8. Were the SF8 binaries removed?
I get SF8. Try refreshing or clearing cache.
by elpapa
Wed Sep 28, 2016 2:04 am
Forum: Computer Chess Club: General Topics
Topic: Perfect play
Replies: 37
Views: 7053

Perfect play

Strong engines playing each other draw more often than weak engines playing each other. Now, if we draw a graph (elo/draw%), find a best fit curve and extrapolate it, we should be able to estimate the strength of engines playing perfect chess (=100% draws). Does this seem reasonable? Has it been done?
by elpapa
Sat Sep 24, 2016 1:52 pm
Forum: Computer Chess Club: General Topics
Topic: am = h6, but what is bm?
Replies: 8
Views: 1286

Re: am = h6, but what is bm?

To late to edit, after ...h6, depth 38:

Bxh6: +0.44 for white
by elpapa
Sat Sep 24, 2016 1:34 pm
Forum: Computer Chess Club: General Topics
Topic: am = h6, but what is bm?
Replies: 8
Views: 1286

Re: am = h6, but what is bm?

SF 160827, multi-pv 4, depth 32:

h6: -0.62
h5: -1.56
Re8: -2.74
Qb6: -5.27

Edit:
And after ...h5, depth 38:

Ne4: +2.06 for white
by elpapa
Sat Sep 24, 2016 1:07 pm
Forum: Computer Chess Club: General Topics
Topic: How fast was the Cray?
Replies: 21
Views: 6719

Re: How fast was the Cray?

mar wrote:
OT: That chart has some flaws, 2 MFLOPS on Atari 2600?! Give me a break :)
1MHz 6502 (no FPU), 2 cycles minimum per instruction...
Yes, that is obviously way off. And no need to use math either, you just have to look at it. :D
by elpapa
Fri Sep 23, 2016 5:11 pm
Forum: Computer Chess Club: General Topics
Topic: How fast was the Cray?
Replies: 21
Views: 6719

Re: How fast was the Cray?

I found this chart comparing MFLOPS: http://pages.experts-exchange.com/processing-power-compared/ According to this, the original iPhone was slightly faster than a Cray-1, and an iPhone 6 is about 15 times faster than the first iPhone. The Tianhe-2 super-computer is almost 100 million times as fast ...
by elpapa
Mon Aug 29, 2016 9:06 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Nullmove bugs
Replies: 30
Views: 4262

Re: Nullmove bugs

if (depth >= 4 && nodetype != NodeTypePV && !incheck && PopCount(b->sidemask[b->side] > 2)) { [­/code] How did you come up with depth >=4? Depth >= 2 works best for me. Make sure you call qsearch when depth <= 0 and not depth == 0 if you make this change. Nullmove reduces by R + 1. My R is 3, so 3 ...
by elpapa
Mon Aug 29, 2016 8:55 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Nullmove bugs
Replies: 30
Views: 4262

Re: Nullmove bugs

if (depth >= 4 && nodetype != NodeTypePV && !incheck && PopCount(b->sidemask[b->side] > 2)) { [­/code] How did you come up with depth >=4? Depth >= 2 works best for me. Make sure you call qsearch when depth <= 0 and not depth == 0 if you make this change. Nullmove reduces by R + 1. My R is 3, so 3 ...
by elpapa
Mon Aug 29, 2016 8:38 pm
Forum: Computer Chess Club: General Topics
Topic: "It's like a chess master losing out to a computer.&quo
Replies: 7
Views: 1574

Re: "It's like a chess master losing out to a computer.

Rochester wrote:I say NO! The fighter is for war. The chess is not real war. The chess is only for game, no kill people!
Killing your opponent with a jet fighter. That could save the day if you're in trouble. I bet it's not mentioned in the rules either, at least not specifically.