Search found 3479 matches

by Vinvin
Mon May 27, 2019 10:14 am
Forum: Computer Chess Club: General Topics
Topic: Nemeth Gambit Revisited
Replies: 13
Views: 2308

Re: Nemeth Gambit Revisited

Ted, what was the time of your runs? Maybe to short? Because Vinvin's 4:26 min shows other results. Hi ! It's a 4:26 min but with a lot of learning before. Especially to find 1...Ke5 is losing. I'll post the difference between SF and McCain after 1...Ke5? where SF understand very late that black is...
by Vinvin
Mon May 27, 2019 6:42 am
Forum: Computer Chess Club: General Topics
Topic: Nemeth Gambit Revisited
Replies: 13
Views: 2308

Re: Nemeth Gambit Revisited

After 8 hours, e5 hold advantage for black : McCain-X3_x64_modern: ... 50/82 6:57:15 212 844 749 345 8 501 634 +0,29 1. ... d6 2.Rd1+ Ke5 3.Nf3+ Kf6 4.Qxe4 h6 5.0-0 Kf7 6.b4 Kg8 7.b5 Na5 8.Rd3 e5 9.Nc4 Be6 10.Ncxe5 Qe8 11.Ng6 Bf7 12.Qxe8 Bxe8 13.Nxh8 Bxb5 14.Rxc3 Bxf1 15.Kxf1 Kxh8 16.Rc7 Re8 17.Bxa7...
by Vinvin
Sun May 26, 2019 10:32 pm
Forum: Computer Chess Club: General Topics
Topic: Nemeth Gambit Revisited
Replies: 13
Views: 2308

Re: Nemeth Gambit Revisited

Nd4, Ke5 and Ne5 seem to be losing. I'll start on overnight analyze with the 2 best moves ( e5 and d6) McCain-X3_x64_modern: ... 32/66 04:26 1 993 794 411 7 490 539 +2,06 1. ... Nd4 2.Bxd4 e5 3.Be3 Bxa3 4.Rd1+ Nd2 5.Ne2 Bxb2 6.Bxd2 cxd2+ 7.Rxd2+ Kc5 8.0-0 d5 9.Qg3 Kc6 10.Rxb2 b6 11.Rc1+ Kb7 12.Nc3 B...
by Vinvin
Wed May 22, 2019 8:45 pm
Forum: Computer Chess Club: General Topics
Topic: SF Dev need 150s (2.5 min) to find Qh6
Replies: 15
Views: 2049

Re: SF Dev need 150s (2.5 min) to find Qh6

Around 15 seconds (6*4GHz) for McCain-X3 to find Qh6!! McCain-X3_x64_modern: Found 511 tablebases ... 32/15 00:08 86 973 812 9 737 327 0,00 1.Kb7 f6 2.Qc6+ Kf7 3.Qxd5+ Kxg7 4.exf6+ Kh8 5.Qxg8+ Kxg8 6.fxe7 Kf7 7.Kxb8 Kxe7 33/30+ 00:14 142 674 364 9 984 210 +0,04 1.Qh6 33/30+ 00:14 144 743 091 9 992 6...
by Vinvin
Thu May 09, 2019 8:55 pm
Forum: Computer Chess Club: General Topics
Topic: h4 wins
Replies: 4
Views: 645

Re: h4 wins

Recent version of SF has trouble here.
But I tested the version from 2019-04-20 and it's quite fast here.
by Vinvin
Fri May 03, 2019 2:02 pm
Forum: Computer Chess Club: General Topics
Topic: interesting position from CCC 8
Replies: 6
Views: 529

Re: interesting position from CCC 8

Qxg5 here (from Komodo MC-Xiphos) seems quite difficult for non-NN engines. It is not obvious that giving up the queen is the most powerful move. How can we be sure it is the best move? After playing the move, let SF analyse a bit, go back one move and start a "2 best moves" analyse : Stockfish_190...
by Vinvin
Thu May 02, 2019 9:08 pm
Forum: Chess Players Forum
Topic: Is Carlsen's approach similar to that of AlphaZero?
Replies: 11
Views: 1482

Re: Is Carlsen's approach similar to that of AlphaZero?

serpico wrote:
Tue Apr 30, 2019 5:59 pm
In the last few months I've read on some blogs that Carlsen's approach in this 2019 is similar to that of AlphaZero. Could there be any truth in this?
Not at all, AlphaZero, LC0 and Stockfish (on an average computer) still around 500 elo over Carlsen.
by Vinvin
Wed Apr 24, 2019 11:27 am
Forum: Computer Chess Club: General Topics
Topic: Vachier-Lagrave - Naiditsch, GRENKE 2019 R3 : 25.Nf6+ !
Replies: 9
Views: 1075

Vachier-Lagrave - Naiditsch, GRENKE 2019 R3 : 25.Nf6+ !

rn2kr2/1pp1b1p1/4p3/1Pp1P2p/p1P1NP1P/P7/1B4P1/3RR1K1 w - - 1 25 SF has trouble to see 25.Nf6+ ! After the move 25.Nf6+, SF sees an advantage for white : rn2kr2/1pp1b1p1/4pN2/1Pp1P2p/p1P2P1P/P7/1B4P1/3RR1K1 b - - 2 25 Stockfish_190305_x64_modern: ... 32/59 00:07 55.800k 7.663k -0,33 25. ... gxf6 26....
by Vinvin
Wed Apr 17, 2019 11:24 pm
Forum: Computer Chess Club: General Topics
Topic: Middlegame positional test-suite
Replies: 20
Views: 4486

Re: Middlegame positional test-suite

... Stockfish finds this for me in about a minute using ten threads. It pretty well sticks with it and seems to be clearly best. 1r3bk1/rnR2p1p/pp2pnp1/3p4/3P4/1P2PB1P/P2BNPP1/R5K1 w - - acd 40; acs 433; bm a4; c3 "a4"; cce 0; ce 45; id "midgames.210"; pm a4; pv a4 Raa8 Kf1 h5 Rc2 a5 Nf4 Nd6 Nd3 Rc...