EG Cook

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Posts: 2006
Joined: Sat Feb 16, 2008 6:38 am
Full name: Peter Martan

Re: EG Cook

Post by peter » Tue Mar 19, 2019 5:16 pm

Nordlandia wrote:
Tue Mar 19, 2019 4:47 pm
If 50-move rule is unchecked for syzygy. Stockfish may not enforce 50-move rule.
Enforced or not, it's a counting rule, except as for studies. The best 7men line after 17...Nxd2 (which can be denied for two more moves with 17.Kb1 instead of Kc1, so longest line to mate after 17.Kb1 Qf6 18.Rc3 Nxd2 would bei -#229, not in 218 :)), is drawn at move 67 in game play, no matter what you enforce, that's the best line stored in Losomosovs, just because they don't store 50 moves boundaries doesn't mean, it's won, if mate cannot be enforced because of 50 moves boundary. In game play it's drawn, so SF's eval is too high, not too low.

Posts: 90
Joined: Mon Apr 16, 2012 5:23 pm
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Re: EG Cook

Post by Dicaste » Tue Mar 19, 2019 7:49 pm

Analysis Lc0 with the latest Ender network and Syzygy tablebases.

Code: Select all

New game Line
r5b1/5N1k/B6P/2b2K1N/R3n3/p6p/3P4/8 w - - 0 1

Analysis by Lc0 v0.21.0 Ender:

1.Nf6+ Nxf6 2.Bd3 Ne4 3.Ng5+ Kxh6 4.Rxa8 Bd5 5.Rh8+ Kg7 6.Rh7+ Kg8 7.Rxh3 Nd6+ 8.Ke5 a2 9.Kxd5 a1Q 10.Kxc5 Nb7+ 11.Kb6 Qb2+ 12.Kc6 Nd8+ 13.Kc7 Qd4 14.Re3 Kg7 15.Ne4 Nf7 16.Bb5 Kh8 17.Bc6 Qd8+ 18.Kb7 Ne5 19.Bb5 Kg7 20.Nc3 Qd6 21.Ne4 Qd5+ 22.Ka6 Qd8 23.Kb7 Qd4 24.Ka6 Kf8 25.Kb7 Ke7 26.Ka6 Nc4 27.Bxc4 Qxc4+ 
  Black is better: -/+ (-1.28)  Depth: 38/64   00:10:34  10947kN, tb=293817

(,  19.03.2019)

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