Search found 3447 matches

by Vinvin
Fri Jun 14, 2019 10:40 am
Forum: Computer Chess Club: General Topics
Topic: New hard positions since January
Replies: 6
Views: 327

Re: New hard positions since January

I still have to dig in this set : viewtopic.php?f=2&t=69687
by Vinvin
Thu Jun 13, 2019 10:34 pm
Forum: Computer Chess Club: General Topics
Topic: New hard positions since January
Replies: 6
Views: 327

New hard positions since January

Not a lot of new positions for 6 months : 1r3bk1/rnR2p1p/pp2pnp1/3p4/3P4/1P2PB1P/P2BNPP1/R5K1 w - - bm a4; rn2kr2/1pp1b1p1/4p3/1Pp1P2p/p1P1NP1P/P7/1B4P1/3RR1K1 w - - bm Nf6+; -> Not sure it's enough to win ! 1b2k1q1/4ppPp/1pK5/3pP3/3P4/1P6/8/2Q5 w - - bm Qh6; r1bq1b1r/pp1pp1pp/2n1k3/8/4nQ2/N1p1BN1P/...
by Vinvin
Sat Jun 08, 2019 10:04 pm
Forum: Computer Chess Club: General Topics
Topic: Pragg vs Firouzja in asian championship
Replies: 5
Views: 222

Re: Pragg vs Firouzja in asian championship

The game Pragg vs Firouzja was played in round 2. The following positions are worth considering : r7/p1p1n1k1/1p1Nb2p/4P2q/2P1Qrp1/3n1p2/PPB2PPP/R3R1K1 w - - 0 26 Q7/p1p1n1k1/1p1Nb2p/4P2q/2P2rp1/3n1p2/PPB2PPP/R3R1K1 b - - 0 26 Less than 1 second for first position and 3 seconds for the second posit...
by Vinvin
Wed Jun 05, 2019 9:17 pm
Forum: Computer Chess Club: General Topics
Topic: Drawish endgame
Replies: 4
Views: 180

Re: Drawish endgame

SF likes the line : [Event "Computer chess game"] [Site "VINVIN-PC"] [Date "2019.06.05"] [Round "?"] [White "Vinvin"] [Black "Vinvin"] [Result "*"] [FEN "6k1/5pp1/4n2p/B7/1P6/P1n2P2/6PP/6K1 w - - 0 33"] 33. Kf2 Nd5 34. b5 Kf8 35. Ke2 Nc5 36. g4 Nb3 37. Be1 Nd4+ 38. Kd3 Nxb5 39. Kc4 Nbc7 40. Kc5 Ke7 ...
by Vinvin
Wed Jun 05, 2019 8:46 am
Forum: Computer Chess Club: General Topics
Topic: Nemeth Gambit Revisited
Replies: 13
Views: 1146

Re: Nemeth Gambit Revisited

Interesting. Is there a move besides Ke5 that wins the day? Here, I posted an eval for the 2 best moves at depth= 50 : http://talkchess.com/forum3/viewtopic.php?p=799816#p799816 Both move are around 0.00 : McCain-X3_x64_modern: ... 50/82 6:57:15 212 844 749 345 8 501 634 +0,29 1. ... d6 2.Rd1+ Ke5 ...
by Vinvin
Tue Jun 04, 2019 11:59 am
Forum: Computer Chess Club: General Topics
Topic: Nemeth Gambit Revisited
Replies: 13
Views: 1146

Re: Nemeth Gambit Revisited

Some positions from this thread: These are the only three that are actually playable: ... r1bq1b1r/pp1pp1pp/2n5/3k4/4n1Q1/N1p1B2P/PP3PP1/R3K1NR b KQ - acd 40; bm Ke5; ce 39; pv Ke5 Nf3+ Kf6 Qf4+ Ke6 Qxe4+ Kf7 bxc3 Qa5 Qc4+ e6 Nb5 a6 Nbd4 Be7 Nxc6 bxc6 Qf4+ Qf5 Ne5+ Ke8 Qxf5 exf5 O-O Rf8 Rfe1 Rf6 Nc...
by Vinvin
Mon Jun 03, 2019 1:26 pm
Forum: Computer Chess Club: General Topics
Topic: Nemeth Gambit Revisited
Replies: 13
Views: 1146

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 Jun 03, 2019 11:47 am
Forum: Computer Chess Club: General Topics
Topic: sting 15
Replies: 26
Views: 1834

Re: sting 15

lech wrote:
Wed May 29, 2019 10:55 am
I added auto-playing only to get the full PV-line (mate or draw), but now I see that it can be used to solve some difficult positions (very long solution) too.
It seems to be like Monte-Carlo algorithm : deepening some lines to get exact score very deep in those lines.
by Vinvin
Mon May 27, 2019 10:14 am
Forum: Computer Chess Club: General Topics
Topic: Nemeth Gambit Revisited
Replies: 13
Views: 1146

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: 1146

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...