Search found 18 matches

by TommyTC
Tue Dec 11, 2018 12:37 am
Forum: Computer Chess Club: General Topics
Topic: A0 - SF, Game 3 of 110 after 15...Qd7, 18.01.2018
Replies: 0
Views: 746

A0 - SF, Game 3 of 110 after 15...Qd7, 18.01.2018

r2q1rk1/pb2bpp1/1p1p1n1p/2pP2N1/P6P/6P1/1PQBPPB1/R3K2R b KQ - 0 15 After 15.a4, SF played 15...Qd7? and is lost! A0 played 16.Bc3 and won a great positional game, but check out this variation: 16.0-0-0! Rfe8 17.Nxf7! Bf8 18.Ng5 Rxe2 19.Rhe1 Rxe1 20.Bh3!! Rxd1+ 21.Kxd1 Qxh3 22.Nxh3 Bxd5. I have not ...
by TommyTC
Wed Dec 05, 2018 8:20 pm
Forum: Computer Chess Club: General Topics
Topic: Lasker - Lipke; Stockfish has difficulty after 39. g4
Replies: 15
Views: 1843

Re: Lasker - Lipke; Stockfish has difficulty after 39. g4

Now I'm a bit confused, since in your original post you gave Nd5 but here I see a knight on e7. My response below was based on your original post. Here is what I did.... I set up the position after 39. g4. Analyzed for 12 hours to depth 78. Looked at the PV and eval: 39...Kf7 40.g5 Nd5 41.h5 Ne7 42...
by TommyTC
Tue Dec 04, 2018 5:32 pm
Forum: Computer Chess Club: General Topics
Topic: Lasker - Lipke; Stockfish has difficulty after 39. g4
Replies: 15
Views: 1843

Re: Lasker - Lipke; Stockfish has difficulty after 39. g4

@Dann Corbit, I agree that Stockfish sees by depth 35 or so that 39...d5?? is losing. @zullil, yes, 39. g4 was clearly subpar and SF easily sees the win after 39. Kg6. In the article I got this game from I was surprised that that wasn't pointed out, especially since it's not easy to see the win afte...
by TommyTC
Sat Dec 01, 2018 6:35 am
Forum: Computer Chess Club: General Topics
Topic: Lasker - Lipke; Stockfish has difficulty after 39. g4
Replies: 15
Views: 1843

Lasker - Lipke; Stockfish has difficulty after 39. g4

Recently Chess.com had an article on games of Lasker. There is an interesting position that Stockfish has difficulty evaluating. Lasker,E - Lipke,P 1-0, Hauptturnier Siegergruppe 1889 8/1pp1k3/p2p1n1p/5K2/5PPP/8/1P1B4/8 b - - 0 39 After 39. g4 an interesting position is on the board where White is a...
by TommyTC
Fri Mar 30, 2018 7:32 pm
Forum: Computer Chess Club: General Topics
Topic: Bugaboo position for SF
Replies: 9
Views: 1381

Re: Bugaboo position for SF

Stockfish has a truly terrible time with this position: [d]8/2p1q3/p3P3/2P4p/1PBP2kP/2N3P1/7K/8 w - - And stockfish cannot solve it even if you let it analyze the position after the winning move for ten minutes before trying to analyze the original problem. On my computer (6 threads and full 6 piec...
by TommyTC
Mon Feb 05, 2018 11:32 pm
Forum: Computer Chess Club: General Topics
Topic: A Turing Test
Replies: 3
Views: 1011

Re: A Turing Test

When I looked at your post using Microsoft Edge (or Google Chrome), I only saw 1 game. When I quoted your text, I then saw the text of the second game. Do you need "/pgn" after the first, and then "pgn" before the second one? [pgn] Two games. First clue, The same two played each other twice. Like th...
by TommyTC
Sun Jan 07, 2018 5:40 pm
Forum: Computer Chess Club: General Topics
Topic: AlphaZero: The 10 Top Shots
Replies: 77
Views: 17412

Re: AlphaZero: The 10 Top Shots

[D] 5q2/3rkp1p/Q3p1pP/P7/5R2/6P1/5PK1/8 b - - 0 65 Cfish and 6-man tables is not seeing a win---yet. info depth 65 seldepth 128 multipv 1 score cp -27 nodes 1840738919005 nps 53839642 hashfull 997 tbhits 4861049579 time 34189286 pv f8b8 f4a4 d7d2 a6c6 b8a7 c6f3 a7c5 a4a1 c5d4 a1a3 d4b2 a3a4 b2b5 a4...
by TommyTC
Tue Jan 02, 2018 9:15 pm
Forum: Computer Chess Club: General Topics
Topic: AlphaZero: The 10 Top Shots
Replies: 77
Views: 17412

Re: AlphaZero: The 10 Top Shots

Regarding this game 9, I was wondering, does anyone get a big score soon after 37...Rh8 instead of the move played by Stockfish 37...Qf8. [D]3k2r1/1b3q2/1p2pPp1/pP1pP3/P2P3P/4Q3/3K4/2R5 b - - Engine: Kaissa (one thread, 512 MB) This is already experimental version 15 of the eval. by T. Romstad, M. ...
by TommyTC
Sun Dec 31, 2017 5:03 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: A Simple Alpha(Go) Zero Tutorial
Replies: 13
Views: 6243

Re: A Simple Alpha(Go) Zero Tutorial

"It assumes basic familiarity with machine learning and reinforcement learning concepts, and should be accessible if you understand neural network basics and Monte Carlo Tree Search. "

I guess "simple" is in the mind of the beholder :)
by TommyTC
Thu Dec 21, 2017 1:26 pm
Forum: Computer Chess Club: General Topics
Topic: Neural networks (NN) explained
Replies: 6
Views: 1694

Re: Neural networks (NN) explained

This video (series) provides a beautiful introduction to neural networks: https://www.youtube.com/watch?v=aircAruvnKk&index=1&list=PLZHQObOWTQDNU6R1_67000Dx_ZCJB-3pi Thank you! I know a bit about computers and a bit about chess, and have dabbled a little with computer chess engines. With all this t...