Online chess engines on powerul machines - what are the options?

Dann Corbit · Post by **Dann Corbit** » Tue Jul 24, 2018 11:10 pm

Karol Majewski wrote: ↑Tue Jul 24, 2018 11:06 pm
Dann Corbit wrote: ↑Tue Jul 24, 2018 10:52 pm Only 36 plies. Any position that has been played a lot, I have already analyzed.
36 is my rock bottom depth. If it is a position I am interested in, I usually go to 40 or more now.

Then engine (probably stockfish but it could be Komodo or Houdini) favored Bd7 also, but gave an advantage of about 1/2 pawn to white.
Hmmm... 1/2 pawn is to much to call it equality. I'm searching for an equlizer. I belive that 10...Bd7 in a long run should give something around 0.2. So hard to prove it.

Yes, 36 plies is not enough depth to trust for opening analysis.
Looks like Cfish is doing a good job so far.

Dann Corbit · Post by **Dann Corbit** » Wed Jul 25, 2018 12:12 am

Looks to me like white is probably a little better. But it is certainly playable, at any rate. Current SF prefers Nd7. Sometimes, it is a good idea to force the move you want and then analyze.

Code: Select all

Searching: r1b1kb1r/1pq2ppp/p3pn2/2p1N3/Q2P4/2P1B3/PP3PPP/R3KB1R b KQkq - 0 1
infinite: 0 time: 0 increment: 0 moves to go: 0

 1   +0.37   00:00  959499  b5 
 2   -0.35   00:00   1416K  Nd7 Rd1 
 3   -0.20   00:00   2670K  Nd7 h3 Rb8 
 4   -0.20   00:00   2706K  Nd7 Be2 Rb8 f4 
 5   -0.23   00:00   2778K  Nd7 Be2 Rb8 f4 b5 Qc2 Nxe5 fxe5 cxd4 Bxd4 
 6   -0.27   00:00   2937K  Nd7 O-O-O Rb8 dxc5 Qxe5 Bf4 
 7   -0.18   00:00   3120K  Nd7 Be2 Rb8 O-O-O b5 Qc2 Nxe5 dxe5 Bb7 
 8   -0.27   00:00   3139K  Nd7 Bb5 cxd4 cxd4 Rb8 Be2 b5 Rc1 
 9   -0.35   00:00   3193K  Bd7 Nxd7 Nxd7 g3 Be7 Bg2 cxd4 cxd4 O-O 
10   -0.20   00:00   3217K  Nd7 Bb5 cxd4 cxd4 Rb8 Be2 b5 Rc1 bxa4 Rxc7 Bd6 
11   -0.26   00:00   3456K  Nd7 f4 Rb8 dxc5 Bxc5 Bxc5 b5 Qd4 Qxc5 Qxc5 Nxc5 O-O-O 
12   -0.27   00:00   3611K  Nd7 f4 Rb8 dxc5 Bxc5 Bxc5 b5 Qd4 Qxc5 Qxc5 Nxc5 Be2 Bb7 Kf2 O-O Rhd1 
13   -0.24   00:00   3849K  Nd7 f4 Rb8 Bd3 b5 Qd1 c4 Bc2 Nf6 O-O Nd5 Bd2 g6 a4 Bd6 axb5 axb5 Qf3 
14   -0.18   00:00   5162K  Nd7 Bd3 Bd6 Nf3 b5 Bxb5 cxd4 Bxd7+ Bxd7 Qxd4 e5 Qd3 Bb5 Qc2 
15   -0.31   00:00   5311K  Nd7 O-O-O cxd4 Nxd7 Bxd7 Qxd4 Bc6 Be2 Rd8 Qxd8+ Qxd8 Rxd8+ Kxd8 Rd1+ Kc7 Bf4+ Kc8 f3 Be7 Be5 f6 Bg3 
16   -0.29   00:00   5556K  Nd7 O-O-O cxd4 Nxd7 Bxd7 Qxd4 Bc6 Be2 Rd8 Qg4 h5 Rxd8+ Qxd8 Qg3 h4 Qg4 Qd5 Bf3 Qxa2 Bxc6+ bxc6 Rd1 Be7 Qxg7 Rf8 
17   -0.22   00:00   5840K  Nd7 O-O-O cxd4 Nxd7 Bxd7 Qxd4 Bc6 Be2 Rd8 Qxd8+ Qxd8 Rxd8+ Kxd8 Rd1+ Kc7 Bf4+ Kc8 f3 Be7 Kc2 Rd8 Rxd8+ Bxd8 c4 
18   -0.26   00:00   6320K  Nd7 O-O-O cxd4 Nxd7 Bxd7 Qxd4 Bc6 Be2 Rd8 Qxd8+ Qxd8 Rxd8+ Kxd8 Rd1+ Kc7 Bf4+ Kc8 f3 Be7 Kc2 Rd8 Rxd8+ Bxd8 Be3 g6 Kd3 Bc7 g3 
19   -0.25   00:01   7101K  Nd7 O-O-O cxd4 Nxd7 Bxd7 Qxd4 Bc6 Be2 Rd8 Qg4 h5 Qg5 Rd5 Rxd5 Bxd5 Rd1 Bxa2 Bf4 Be7 Qg3 h4 Bxc7 hxg3 
20   -0.33   00:02  19397K  Nd7 Nf3 cxd4 Bxd4 Qc6 Qd1 b5 Bd3 Bb7 O-O Bc5 a4 O-O axb5 axb5 Qe2 Rxa1 Rxa1 Bxd4 cxd4 Qd6 Bxb5 Bxf3 Qxf3 
21   -0.29   00:02  20858K  Nd7 Nf3 cxd4 Bxd4 Qc6 Qc2 b5 Bd3 Bb7 O-O-O Bc5 Bxh7 Bxd4 Rxd4 Nf6 Bd3 Qc7 Qe2 Kf8 Re1 Rh5 Bc2 Rd5 Kb1 
22   -0.23   00:03  27312K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Nxd7 Qxd7 Qxd4 Qxd4 Bxd4 O-O-O O-O-O f6 Kc2 Bd6 Rhe1 e5 Be3 Bc7 a4 h5 b4 b5 a5 Kb7 
23   -0.24   00:05  47078K  Nd7 O-O-O cxd4 Nxd7 Bxd7 Qxd4 Bc6 Be2 Rd8 Qxd8+ Qxd8 Rxd8+ Kxd8 Bb6+ Kc8 Rd1 Be7 f3 Bd8 Bxd8 Rxd8 Rxd8+ Kxd8 Kd2 f5 c4 e5 b4 Kc7 Bd3 g6 Ke3 
24   -0.18   00:06  61817K  Nd7 Nf3 Rb8 dxc5 Bxc5 Bf4 Bd6 Bxd6 Qxd6 Rd1 Qc7 Qg4 O-O Qg3 Qxg3 hxg3 b5 Be2 Nf6 Ne5 Bb7 f3 Rfd8 Rxd8+ Rxd8 g4 Nd7 Nd3 e5 Kf2 e4 Nb4 Nc5 
25   -0.34   00:08  77284K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 Nxf7 Kxf7 axb5 axb5 Rd1 Rhd8 Qh4 Kg8 O-O Be5 h3 Bf6 Bg5 Rf8 Bxf6 Rxf6 Rd2 Raf8 Qd4 Qc4 Qb6 Qc6 Qxc6 bxc6 Ra1 
26   -0.26   00:09  84799K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 Nxf7 Kxf7 axb5 axb5 Rd1 Rhd8 Qh4 b4 O-O bxc3 bxc3 Kg8 Qh3 Qf7 Bd4 e5 Bb6 Bc7 Bxc7 Rxd1 Rxd1 Qxc7 Qe6+ Kh8 Qd5 Rc8 c4 b6 h3 Qxc4 Qxe5 
27   -0.32   00:11 104655K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Rxa6 Rxa6 bxa6 Kd2 Ra8 Ra1 a5 Ra4 Kc6 g3 e5 b4 Kb5 Rxa5+ Rxa5 bxa5 Kxa5 Kd3 
28   -0.33   00:11 109435K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 a5 Ra1 f5 f4 Ra8 b3 Kc6 Kc2 e5 fxe5 Bxe5 g3 
29   -0.22   00:13 127080K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Bc7 Ra2 Kd7 bxa6 Rxa6 Rxa6 bxa6 Kd2 a5 Ra1 f5 g3 e5 Kc2 Rb8 b3 g6 c4 e4 Bf4 Ra8 Kc3 Bxf4 
30   -0.33   00:14 141896K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 a5 Ra1 f5 g3 e5 Kc2 Rb8 b3 f4 Bd2 f3 Be3 Ke6 g4 Kd6 h4 
31   -0.26   00:16 163692K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 a5 Ra1 f5 g3 Rb8 Kc2 e5 b3 f4 Bd2 f3 Be3 Ke6 Ra4 h5 h3 Rd8 
32   -0.36   00:23 226064K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 a5 Ra1 Rb8 Kc2 f5 g3 e5 Ra4 g6 b3 h5 c4 Kc6 Bd2 Bb6 Bxa5 Bxf2 Bc3 
33   -0.29   00:28 273846K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 a5 Ra1 f5 g3 e5 b4 axb4 cxb4 Bd6 b5 Rb8 Ra7+ Ke6 b6 
34   -0.34   00:30 292983K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 a5 Ra1 f5 g3 e5 b4 axb4 cxb4 Bd6 Kc3 Rb8 Ra7+ Kc6 Bc5 Bxc5 bxc5 Kxc5 Rxg7 Kd5 Rxh7 Rc8+ Kd3 
35   -0.15   01:07 655584K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 a5 Ra1 f5 g3 e5 Kc2 g6 c4 Rc8 b3 e4 b4 axb4 Ra7 b3+ Kxb3 Kc6 Ra6+ Kd7 Rf6 Be5 Rf7+ Kc6 Kc2 
36   -0.13   01:48   1058M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 a5 Ra1 f5 g3 e5 b4 axb4 cxb4 Bd6 b5 Rb8 Ra7+ Ke6 b6 f4 gxf4 exf4 Bd4 Be5 Bxe5 Kxe5 b7 Kd6 Kd3 Kc7 Ke4 Kb6 
37   -0.13   02:33   1500M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 a5 g3 Rb8 Kc2 a4 Ra1 Ra8 Kd3 Kc6 Kc4 Ra5 Ra2 Rb5 Rxa4 Rxb2 Kd3 Rb7 Rc4+ Kd5 Rb4 Kc6 Rxb7 Kxb7 h3 Kc6 
38   -0.15   03:02   1790M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 a5 Ra1 f5 g3 e5 Ra4 Kc6 b3 g6 Rc4+ Kd7 Kc2 e4 h4 Rc8 Bd4 Rf8 Ra4 Ra8 Be3 Rc8 Rc4 Be5 Rxc8 
39   -0.25   03:34   2096M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 Kc6 Kc2 a5 Ra1 h5 Ra4 e5 Rc4+ Kd7 g3 g6 b3 Rd8 Re4 Ra8 Ra4 Rd8 Ra1 Kc6 Bg5 Rb8 Bd2 Ra8 c4 Bb6 
40   -0.35   04:00   2345M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 Kc6 b3 f5 Ra1 a5 f4 Rb8 Kc2 Re8 Ra4 g6 h4 Kb7 Kd3 Rd8+ Kc4 Rd1 b4 Re1 Bd4 axb4 Ra7+ Kc6 
41   -0.25   05:35   3291M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 Rb8 Kc2 a5 Ra1 Kc6 Bd2 Bb6 c4 Bd4 Bc3 Bxc3 Kxc3 Ra8 g4 g5 Rf1 f6 f4 a4 fxg5 fxg5 Ra1 Kd6 Kd4 e5+ Kc3 Kc5 b3 a3 b4+ Kc6 Kb3 
42   -0.26   05:49   3427M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 Rb8 Kc2 a5 b3 Kc6 g3 Rd8 Ra1 Bb6 Bxb6 Kxb6 Re1 Rd5 g4 h5 h3 Rc5 f3 Kc6 Re2 g6 Rd2 hxg4 hxg4 f5 c4 fxg4 fxg4 
43   -0.19   07:30   4456M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 Rb8 Kc2 a5 b3 Kc6 g3 Rd8 Bd2 e5 f3 Re8 c4 e4 fxe4 Rxe4 Kd3 Re8 Ra1 Bb6 Bxa5 Re3+ Kc2 Bxa5 Rxa5 Re2+ Kc3 Rxh2 b4 Rg2 Rc5+ Kd6 Rg5 
44   -0.22   10:45   6361M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qa4 O-O b6 Qe7 O-O-O Rfd8 Kc2 Rac8 Rhe1 g6 Qe4 Bd6 h4 Bc5 Bg5 f6 Be3 Bxe3 Qxe3 e5 f4 Re8 fxe5 fxe5 Qe4 Rc6 Rd5 Rxb6 Rxe5 Qxe5 Qxe5 Rxe5 Rxe5 Kf7 g4 Re6 Rxe6 Kxe6 b4 Kd6 Kd3 b6 Kd4 
45   -0.18   17:12  10109M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra4 Rxa6 Rxa6 bxa6 Kd2 Kc6 Ra1 a5 b3 Rd8+ Kc2 Bb6 Bxb6 Kxb6 Re1 Rd5 g4 h5 h3 Kc6 Re2 Rc5 Re4 hxg4 hxg4 g5 Re3 Kd6 Rh3 Rc8 Rd3+ Ke7 Rd1 
46   -0.37   17:55  10527M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qa4 O-O b6 Qe7 O-O-O Rfd8 h4 h6 Rxd8+ Rxd8 Rd1 f5 h5 Kf7 f3 Rd5 Kc2 Rxd1 Kxd1 Qd6+ Kc2 Ke7 Qc4 Kd7 b4 Bf6 Qd3 Qxd3+ Kxd3 e5 c4 Kd6 Ke2 Kc6 c5 Kd5 g4 fxg4 fxg4 Kc4 c6 
47   -0.40   28:22  16914M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qa4 O-O b6 Qe7 O-O-O Rfd8 g3 f5 Rhe1 Kf7 Kc2 Bf6 g4 Qe8 Qxe8+ Kxe8 gxf5 Rxd1 Rxd1 exf5 Rd5 g6 Rc5 Rd8 Kb3 Be7 Re5 Rd7 Bg5 Kf7 Bxe7 Rxe7 Rd5 Re6 Rd7+ Re7 Rc7 Ke6 Rxe7+ Kxe7 Kb4 Kd6 c4 Kc6 c5 a5+ Kc4 a4 
48   -0.33   30:00  17895M  Nd7 Bb5
Nodes: 17895396542
Nodes/second: 9941870
Best move: Nd7
Ponder move: Bb5

Karol Majewski · Post by **Karol Majewski** » Wed Jul 25, 2018 12:19 am

Dann Corbit wrote: ↑Wed Jul 25, 2018 12:12 am Looks to me like white is probably a little better. But it is certainly playable, at any rate. Current SF prefers Nd7. Sometimes, it is a good idea to force the move you want and then analyze.

Code: Select all

Searching: r1b1kb1r/1pq2ppp/p3pn2/2p1N3/Q2P4/2P1B3/PP3PPP/R3KB1R b KQkq - 0 1
infinite: 0 time: 0 increment: 0 moves to go: 0

 1   +0.37   00:00  959499  b5 
 2   -0.35   00:00   1416K  Nd7 Rd1 
 3   -0.20   00:00   2670K  Nd7 h3 Rb8 
 4   -0.20   00:00   2706K  Nd7 Be2 Rb8 f4 
 5   -0.23   00:00   2778K  Nd7 Be2 Rb8 f4 b5 Qc2 Nxe5 fxe5 cxd4 Bxd4 
 6   -0.27   00:00   2937K  Nd7 O-O-O Rb8 dxc5 Qxe5 Bf4 
 7   -0.18   00:00   3120K  Nd7 Be2 Rb8 O-O-O b5 Qc2 Nxe5 dxe5 Bb7 
 8   -0.27   00:00   3139K  Nd7 Bb5 cxd4 cxd4 Rb8 Be2 b5 Rc1 
 9   -0.35   00:00   3193K  Bd7 Nxd7 Nxd7 g3 Be7 Bg2 cxd4 cxd4 O-O 
10   -0.20   00:00   3217K  Nd7 Bb5 cxd4 cxd4 Rb8 Be2 b5 Rc1 bxa4 Rxc7 Bd6 
11   -0.26   00:00   3456K  Nd7 f4 Rb8 dxc5 Bxc5 Bxc5 b5 Qd4 Qxc5 Qxc5 Nxc5 O-O-O 
12   -0.27   00:00   3611K  Nd7 f4 Rb8 dxc5 Bxc5 Bxc5 b5 Qd4 Qxc5 Qxc5 Nxc5 Be2 Bb7 Kf2 O-O Rhd1 
13   -0.24   00:00   3849K  Nd7 f4 Rb8 Bd3 b5 Qd1 c4 Bc2 Nf6 O-O Nd5 Bd2 g6 a4 Bd6 axb5 axb5 Qf3 
14   -0.18   00:00   5162K  Nd7 Bd3 Bd6 Nf3 b5 Bxb5 cxd4 Bxd7+ Bxd7 Qxd4 e5 Qd3 Bb5 Qc2 
15   -0.31   00:00   5311K  Nd7 O-O-O cxd4 Nxd7 Bxd7 Qxd4 Bc6 Be2 Rd8 Qxd8+ Qxd8 Rxd8+ Kxd8 Rd1+ Kc7 Bf4+ Kc8 f3 Be7 Be5 f6 Bg3 
16   -0.29   00:00   5556K  Nd7 O-O-O cxd4 Nxd7 Bxd7 Qxd4 Bc6 Be2 Rd8 Qg4 h5 Rxd8+ Qxd8 Qg3 h4 Qg4 Qd5 Bf3 Qxa2 Bxc6+ bxc6 Rd1 Be7 Qxg7 Rf8 
17   -0.22   00:00   5840K  Nd7 O-O-O cxd4 Nxd7 Bxd7 Qxd4 Bc6 Be2 Rd8 Qxd8+ Qxd8 Rxd8+ Kxd8 Rd1+ Kc7 Bf4+ Kc8 f3 Be7 Kc2 Rd8 Rxd8+ Bxd8 c4 
18   -0.26   00:00   6320K  Nd7 O-O-O cxd4 Nxd7 Bxd7 Qxd4 Bc6 Be2 Rd8 Qxd8+ Qxd8 Rxd8+ Kxd8 Rd1+ Kc7 Bf4+ Kc8 f3 Be7 Kc2 Rd8 Rxd8+ Bxd8 Be3 g6 Kd3 Bc7 g3 
19   -0.25   00:01   7101K  Nd7 O-O-O cxd4 Nxd7 Bxd7 Qxd4 Bc6 Be2 Rd8 Qg4 h5 Qg5 Rd5 Rxd5 Bxd5 Rd1 Bxa2 Bf4 Be7 Qg3 h4 Bxc7 hxg3 
20   -0.33   00:02  19397K  Nd7 Nf3 cxd4 Bxd4 Qc6 Qd1 b5 Bd3 Bb7 O-O Bc5 a4 O-O axb5 axb5 Qe2 Rxa1 Rxa1 Bxd4 cxd4 Qd6 Bxb5 Bxf3 Qxf3 
21   -0.29   00:02  20858K  Nd7 Nf3 cxd4 Bxd4 Qc6 Qc2 b5 Bd3 Bb7 O-O-O Bc5 Bxh7 Bxd4 Rxd4 Nf6 Bd3 Qc7 Qe2 Kf8 Re1 Rh5 Bc2 Rd5 Kb1 
22   -0.23   00:03  27312K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Nxd7 Qxd7 Qxd4 Qxd4 Bxd4 O-O-O O-O-O f6 Kc2 Bd6 Rhe1 e5 Be3 Bc7 a4 h5 b4 b5 a5 Kb7 
23   -0.24   00:05  47078K  Nd7 O-O-O cxd4 Nxd7 Bxd7 Qxd4 Bc6 Be2 Rd8 Qxd8+ Qxd8 Rxd8+ Kxd8 Bb6+ Kc8 Rd1 Be7 f3 Bd8 Bxd8 Rxd8 Rxd8+ Kxd8 Kd2 f5 c4 e5 b4 Kc7 Bd3 g6 Ke3 
24   -0.18   00:06  61817K  Nd7 Nf3 Rb8 dxc5 Bxc5 Bf4 Bd6 Bxd6 Qxd6 Rd1 Qc7 Qg4 O-O Qg3 Qxg3 hxg3 b5 Be2 Nf6 Ne5 Bb7 f3 Rfd8 Rxd8+ Rxd8 g4 Nd7 Nd3 e5 Kf2 e4 Nb4 Nc5 
25   -0.34   00:08  77284K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 Nxf7 Kxf7 axb5 axb5 Rd1 Rhd8 Qh4 Kg8 O-O Be5 h3 Bf6 Bg5 Rf8 Bxf6 Rxf6 Rd2 Raf8 Qd4 Qc4 Qb6 Qc6 Qxc6 bxc6 Ra1 
26   -0.26   00:09  84799K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 Nxf7 Kxf7 axb5 axb5 Rd1 Rhd8 Qh4 b4 O-O bxc3 bxc3 Kg8 Qh3 Qf7 Bd4 e5 Bb6 Bc7 Bxc7 Rxd1 Rxd1 Qxc7 Qe6+ Kh8 Qd5 Rc8 c4 b6 h3 Qxc4 Qxe5 
27   -0.32   00:11 104655K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Rxa6 Rxa6 bxa6 Kd2 Ra8 Ra1 a5 Ra4 Kc6 g3 e5 b4 Kb5 Rxa5+ Rxa5 bxa5 Kxa5 Kd3 
28   -0.33   00:11 109435K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 a5 Ra1 f5 f4 Ra8 b3 Kc6 Kc2 e5 fxe5 Bxe5 g3 
29   -0.22   00:13 127080K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Bc7 Ra2 Kd7 bxa6 Rxa6 Rxa6 bxa6 Kd2 a5 Ra1 f5 g3 e5 Kc2 Rb8 b3 g6 c4 e4 Bf4 Ra8 Kc3 Bxf4 
30   -0.33   00:14 141896K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 a5 Ra1 f5 g3 e5 Kc2 Rb8 b3 f4 Bd2 f3 Be3 Ke6 g4 Kd6 h4 
31   -0.26   00:16 163692K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 a5 Ra1 f5 g3 Rb8 Kc2 e5 b3 f4 Bd2 f3 Be3 Ke6 Ra4 h5 h3 Rd8 
32   -0.36   00:23 226064K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 a5 Ra1 Rb8 Kc2 f5 g3 e5 Ra4 g6 b3 h5 c4 Kc6 Bd2 Bb6 Bxa5 Bxf2 Bc3 
33   -0.29   00:28 273846K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 a5 Ra1 f5 g3 e5 b4 axb4 cxb4 Bd6 b5 Rb8 Ra7+ Ke6 b6 
34   -0.34   00:30 292983K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 a5 Ra1 f5 g3 e5 b4 axb4 cxb4 Bd6 Kc3 Rb8 Ra7+ Kc6 Bc5 Bxc5 bxc5 Kxc5 Rxg7 Kd5 Rxh7 Rc8+ Kd3 
35   -0.15   01:07 655584K  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 a5 Ra1 f5 g3 e5 Kc2 g6 c4 Rc8 b3 e4 b4 axb4 Ra7 b3+ Kxb3 Kc6 Ra6+ Kd7 Rf6 Be5 Rf7+ Kc6 Kc2 
36   -0.13   01:48   1058M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 a5 Ra1 f5 g3 e5 b4 axb4 cxb4 Bd6 b5 Rb8 Ra7+ Ke6 b6 f4 gxf4 exf4 Bd4 Be5 Bxe5 Kxe5 b7 Kd6 Kd3 Kc7 Ke4 Kb6 
37   -0.13   02:33   1500M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 a5 g3 Rb8 Kc2 a4 Ra1 Ra8 Kd3 Kc6 Kc4 Ra5 Ra2 Rb5 Rxa4 Rxb2 Kd3 Rb7 Rc4+ Kd5 Rb4 Kc6 Rxb7 Kxb7 h3 Kc6 
38   -0.15   03:02   1790M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 a5 Ra1 f5 g3 e5 Ra4 Kc6 b3 g6 Rc4+ Kd7 Kc2 e4 h4 Rc8 Bd4 Rf8 Ra4 Ra8 Be3 Rc8 Rc4 Be5 Rxc8 
39   -0.25   03:34   2096M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 Kc6 Kc2 a5 Ra1 h5 Ra4 e5 Rc4+ Kd7 g3 g6 b3 Rd8 Re4 Ra8 Ra4 Rd8 Ra1 Kc6 Bg5 Rb8 Bd2 Ra8 c4 Bb6 
40   -0.35   04:00   2345M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 Kc6 b3 f5 Ra1 a5 f4 Rb8 Kc2 Re8 Ra4 g6 h4 Kb7 Kd3 Rd8+ Kc4 Rd1 b4 Re1 Bd4 axb4 Ra7+ Kc6 
41   -0.25   05:35   3291M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 Rb8 Kc2 a5 Ra1 Kc6 Bd2 Bb6 c4 Bd4 Bc3 Bxc3 Kxc3 Ra8 g4 g5 Rf1 f6 f4 a4 fxg5 fxg5 Ra1 Kd6 Kd4 e5+ Kc3 Kc5 b3 a3 b4+ Kc6 Kb3 
42   -0.26   05:49   3427M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 Rb8 Kc2 a5 b3 Kc6 g3 Rd8 Ra1 Bb6 Bxb6 Kxb6 Re1 Rd5 g4 h5 h3 Rc5 f3 Kc6 Re2 g6 Rd2 hxg4 hxg4 f5 c4 fxg4 fxg4 
43   -0.19   07:30   4456M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra2 Rxa6 Rxa6 bxa6 Kd2 Rb8 Kc2 a5 b3 Kc6 g3 Rd8 Bd2 e5 f3 Re8 c4 e4 fxe4 Rxe4 Kd3 Re8 Ra1 Bb6 Bxa5 Re3+ Kc2 Bxa5 Rxa5 Re2+ Kc3 Rxh2 b4 Rg2 Rc5+ Kd6 Rg5 
44   -0.22   10:45   6361M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qa4 O-O b6 Qe7 O-O-O Rfd8 Kc2 Rac8 Rhe1 g6 Qe4 Bd6 h4 Bc5 Bg5 f6 Be3 Bxe3 Qxe3 e5 f4 Re8 fxe5 fxe5 Qe4 Rc6 Rd5 Rxb6 Rxe5 Qxe5 Qxe5 Rxe5 Rxe5 Kf7 g4 Re6 Rxe6 Kxe6 b4 Kd6 Kd3 b6 Kd4 
45   -0.18   17:12  10109M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qb4 Bd6 Qa5 Qxa5 Rxa5 Kd7 bxa6 Bc7 Ra4 Rxa6 Rxa6 bxa6 Kd2 Kc6 Ra1 a5 b3 Rd8+ Kc2 Bb6 Bxb6 Kxb6 Re1 Rd5 g4 h5 h3 Kc6 Re2 Rc5 Re4 hxg4 hxg4 g5 Re3 Kd6 Rh3 Rc8 Rd3+ Ke7 Rd1 
46   -0.37   17:55  10527M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qa4 O-O b6 Qe7 O-O-O Rfd8 h4 h6 Rxd8+ Rxd8 Rd1 f5 h5 Kf7 f3 Rd5 Kc2 Rxd1 Kxd1 Qd6+ Kc2 Ke7 Qc4 Kd7 b4 Bf6 Qd3 Qxd3+ Kxd3 e5 c4 Kd6 Ke2 Kc6 c5 Kd5 g4 fxg4 fxg4 Kc4 c6 
47   -0.40   28:22  16914M  Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 axb5 Bxe5 Qa4 O-O b6 Qe7 O-O-O Rfd8 g3 f5 Rhe1 Kf7 Kc2 Bf6 g4 Qe8 Qxe8+ Kxe8 gxf5 Rxd1 Rxd1 exf5 Rd5 g6 Rc5 Rd8 Kb3 Be7 Re5 Rd7 Bg5 Kf7 Bxe7 Rxe7 Rd5 Re6 Rd7+ Re7 Rc7 Ke6 Rxe7+ Kxe7 Kb4 Kd6 c4 Kc6 c5 a5+ Kc4 a4 
48   -0.33   30:00  17895M  Nd7 Bb5
Nodes: 17895396542
Nodes/second: 9941870
Best move: Nd7
Ponder move: Bb5

Stocky missed here that after Nd7 Bb5 cxd4 Bxd7+ Bxd7 Qxd4 Bb5 a4 Bd6 there is Nxf7! and black has horrible pawn structure and white is just much better. After 10...Bd7 black has knight against bishop but his pawn structure is super compact and black can fully equlize - that's my conclusion. Told you - this is very deep.

zullil · Post by **zullil** » Wed Jul 25, 2018 1:31 am

Cfish-dev. Search is ongoing:

+0.25 10... Bd7 11. Nxd7 Nxd7 12. Be2 Bd6 13. Rd1 O-O 14. dxc5 Nxc5 15. Qc2 Rad8 16. g3 b5 17. O-O Na4 18. Rfe1 h6 19. Bc1 Qc6 20. Bf1 Be7 21. Bf4 Rxd1 22. Rxd1 Nb6 23. Bg2 Qc8 24. Qe4 Na4 25. Rd2 Bg5 26. Bxg5 hxg5 27. Bf3 Qc5 28. Be2 Nb6 29. Rd4 Na4 30. Qc2 Nb6 31. Bf1 Rc8 32. Qd2 Nc4 33. Rd8+ Rxd8 34. Qxd8+ Qf8 35. Qxf8+ Kxf8 36. Bxc4 bxc4 (depth 49, 2:41:27)

Nay Lin Tun · Post by **Nay Lin Tun** » Wed Jul 25, 2018 1:51 am

Karol Majewski wrote: ↑Tue Jul 24, 2018 10:03 pm OK, so here's the position. Black to move. After moving pieces and looking at evaluations I came to the conclusion that 10...Bd7 is objectively stronger than 10...Nd7. Now I want to - kind of - prove it and check if the engine (probably latest Stocky) will find 10...Bd7 in a single run. This requires very deep analysis and very powerful machine, I think. Best line should start like: 10...Bd7 11.Nxd7 Nxd7 and now probably 12.Be2 or 12.Rd1 or even 12.g3...

[d]r1b1kb1r/1pq2ppp/p3pn2/2p1N3/Q2P4/2P1B3/PP3PPP/R3KB1R b KQkq - 3 10

Well here are my choices with my own decisions,

10... Bd7 is the only move, other moves are quite bad. 10.--- Nd7 simply cramp position, white knight on e5 is already strong, and black cant avoid saving bishop pair.
12. Be2 is simply the best, the plan is keeping an eye on black's queen side via Bf3 . Alternative Bd3 is not that good as king side attack is not an option in this position and also Bd3 simply blocked "d" file. Alternative g3, Bg2, O-O is not necessary as Be2,O-O, Bf3 work the same .(so g3, Bg2 ,O-O simply delay castling by one tempo and simply weakened the king side pawns structure).
12. Rd1 or Be2 may be exactly the same evaluation by engines or Be2 is better because they both may reach to the same position after transposition, however, Be2 is logical choice first cos, it logically move the priority piece.
And also after castling, there is better option in moving .14.Rfd1, and 15. Rac1.
If you move 12. Rd1 in that position you are simply losing king side's rook's best "d" file.

Karol Majewski · Post by **Karol Majewski** » Wed Jul 25, 2018 2:36 am

Nay Lin Tun wrote: ↑Wed Jul 25, 2018 1:51 am
Karol Majewski wrote: ↑Tue Jul 24, 2018 10:03 pm OK, so here's the position. Black to move. After moving pieces and looking at evaluations I came to the conclusion that 10...Bd7 is objectively stronger than 10...Nd7. Now I want to - kind of - prove it and check if the engine (probably latest Stocky) will find 10...Bd7 in a single run. This requires very deep analysis and very powerful machine, I think. Best line should start like: 10...Bd7 11.Nxd7 Nxd7 and now probably 12.Be2 or 12.Rd1 or even 12.g3...

[d]r1b1kb1r/1pq2ppp/p3pn2/2p1N3/Q2P4/2P1B3/PP3PPP/R3KB1R b KQkq - 3 10
Well here are my choices with my own decisions,
10... Bd7 is the only move, other moves are quite bad. 10.--- Nd7 simply cramp position, white knight on e5 is already strong, and black cant avoid saving bishop pair.
12. Be2 is simply the best, the plan is keeping an eye on black's queen side via Bf3 . Alternative Bd3 is not that good as king side attack is not an option in this position and also Bd3 simply blocked "d" file. Alternative g3, Bg2, O-O is not necessary as Be2,O-O, Bf3 work the same .(so g3, Bg2 ,O-O simply delay castling by one tempo and simply weakened the king side pawns structure).
12. Rd1 or Be2 may be exactly the same evaluation by engines or Be2 is better because they both may reach to the same position after transposition, however, Be2 is logical choice first cos, it logically move the priority piece.
And also after castling, there is better option in moving .14.Rfd1, and 15. Rac1.
If you move 12. Rd1 in that position you are simply losing king side's rook's best "d" file.

Thanks for your input. I also think that 12.Be2 is critical. And then black should play Bd6 and the line continues: 13.dxc5 Bxc5 14.Bf4 e5 and now white has three good options 15.Bd2, 15.Bg5 and 15.Bg3. I've managed to equlize in all three but 15.Bg3 is probably the most challenging.

zullil · Post by **zullil** » Wed Jul 25, 2018 2:39 am

zullil wrote: ↑Wed Jul 25, 2018 1:31 am Cfish-dev. Search is ongoing:

+0.25 10... Bd7 11. Nxd7 Nxd7 12. Be2 Bd6 13. Rd1 O-O 14. dxc5 Nxc5 15. Qc2 Rad8 16. g3 b5 17. O-O Na4 18. Rfe1 h6 19. Bc1 Qc6 20. Bf1 Be7 21. Bf4 Rxd1 22. Rxd1 Nb6 23. Bg2 Qc8 24. Qe4 Na4 25. Rd2 Bg5 26. Bxg5 hxg5 27. Bf3 Qc5 28. Be2 Nb6 29. Rd4 Na4 30. Qc2 Nb6 31. Bf1 Rc8 32. Qd2 Nc4 33. Rd8+ Rxd8 34. Qxd8+ Qf8 35. Qxf8+ Kxf8 36. Bxc4 bxc4 (depth 49, 2:41:27)

+0.33 10... Bd7 11. Nxd7 Nxd7 12. g3 Be7 13. O-O-O O-O-O 14. Qc2 Nb6 15. Bg2 Nd5 16. Bxd5 Rxd5 17. dxc5 Bxc5 18. Rxd5 Bxe3+ 19. fxe3 exd5 20. Qd3 Qe7 21. Rf1 f6 22. Kd2 Qe6 23. Rf5 Rd8 24. a4 h6 25. Rf4 Kc7 26. Rd4 Qh3 27. Qe2 Rd7 28. Qf2 a5 29. Kc2 Qe6 30. Qf3 b6 31. e4 dxe4 32. Qf4+ Kc6 33. Rxe4 Qd5 34. Rc4+ Kb7 35. Rd4 Qg2+ 36. Qd2 Qxd2+ 37. Kxd2 Kc6 38. Rxd7 (depth 51, 2:55:22)

Karol Majewski · Post by **Karol Majewski** » Wed Jul 25, 2018 2:41 am

zullil wrote: ↑Wed Jul 25, 2018 1:31 am Cfish-dev. Search is ongoing:

+0.25 10... Bd7 11. Nxd7 Nxd7 12. Be2 Bd6 13. Rd1 O-O 14. dxc5 Nxc5 15. Qc2 Rad8 16. g3 b5 17. O-O Na4 18. Rfe1 h6 19. Bc1 Qc6 20. Bf1 Be7 21. Bf4 Rxd1 22. Rxd1 Nb6 23. Bg2 Qc8 24. Qe4 Na4 25. Rd2 Bg5 26. Bxg5 hxg5 27. Bf3 Qc5 28. Be2 Nb6 29. Rd4 Na4 30. Qc2 Nb6 31. Bf1 Rc8 32. Qd2 Nc4 33. Rd8+ Rxd8 34. Qxd8+ Qf8 35. Qxf8+ Kxf8 36. Bxc4 bxc4 (depth 49, 2:41:27)

Thanks Louis, this is close to my conclusion. Evaluation should be getting closer to zero now. What's your machine? How many CPU's? Hash?

zullil · Post by **zullil** » Wed Jul 25, 2018 2:46 am

Karol Majewski wrote: ↑Wed Jul 25, 2018 2:41 am
zullil wrote: ↑Wed Jul 25, 2018 1:31 am Cfish-dev. Search is ongoing:

+0.25 10... Bd7 11. Nxd7 Nxd7 12. Be2 Bd6 13. Rd1 O-O 14. dxc5 Nxc5 15. Qc2 Rad8 16. g3 b5 17. O-O Na4 18. Rfe1 h6 19. Bc1 Qc6 20. Bf1 Be7 21. Bf4 Rxd1 22. Rxd1 Nb6 23. Bg2 Qc8 24. Qe4 Na4 25. Rd2 Bg5 26. Bxg5 hxg5 27. Bf3 Qc5 28. Be2 Nb6 29. Rd4 Na4 30. Qc2 Nb6 31. Bf1 Rc8 32. Qd2 Nc4 33. Rd8+ Rxd8 34. Qxd8+ Qf8 35. Qxf8+ Kxf8 36. Bxc4 bxc4 (depth 49, 2:41:27)
Thanks Louis, this is close to my conclusion. Evaluation should be getting closer to zero now. What's your machine? How many CPU's? Hash?

Twenty threads and 32 GB hash, with 6-man endgame tables. I'll let the search continue.

zullil · Post by **zullil** » Wed Jul 25, 2018 2:47 am

zullil wrote: ↑Wed Jul 25, 2018 2:39 am
zullil wrote: ↑Wed Jul 25, 2018 1:31 am Cfish-dev. Search is ongoing:

+0.25 10... Bd7 11. Nxd7 Nxd7 12. Be2 Bd6 13. Rd1 O-O 14. dxc5 Nxc5 15. Qc2 Rad8 16. g3 b5 17. O-O Na4 18. Rfe1 h6 19. Bc1 Qc6 20. Bf1 Be7 21. Bf4 Rxd1 22. Rxd1 Nb6 23. Bg2 Qc8 24. Qe4 Na4 25. Rd2 Bg5 26. Bxg5 hxg5 27. Bf3 Qc5 28. Be2 Nb6 29. Rd4 Na4 30. Qc2 Nb6 31. Bf1 Rc8 32. Qd2 Nc4 33. Rd8+ Rxd8 34. Qxd8+ Qf8 35. Qxf8+ Kxf8 36. Bxc4 bxc4 (depth 49, 2:41:27)
+0.33 10... Bd7 11. Nxd7 Nxd7 12. g3 Be7 13. O-O-O O-O-O 14. Qc2 Nb6 15. Bg2 Nd5 16. Bxd5 Rxd5 17. dxc5 Bxc5 18. Rxd5 Bxe3+ 19. fxe3 exd5 20. Qd3 Qe7 21. Rf1 f6 22. Kd2 Qe6 23. Rf5 Rd8 24. a4 h6 25. Rf4 Kc7 26. Rd4 Qh3 27. Qe2 Rd7 28. Qf2 a5 29. Kc2 Qe6 30. Qf3 b6 31. e4 dxe4 32. Qf4+ Kc6 33. Rxe4 Qd5 34. Rc4+ Kb7 35. Rd4 Qg2+ 36. Qd2 Qxd2+ 37. Kxd2 Kc6 38. Rxd7 (depth 51, 2:55:22)

+0.21 10... Bd7 11. Nxd7 Nxd7 12. Be2 Bd6 13. Rd1 O-O 14. dxc5 Nxc5 15. Qc2 Rad8 16. g3 b5 17. O-O Na4 18. Kg2 Nb6 19. Qe4 Nd5 20. Bg5 Nf6 21. Qf3 Be7 22. Rxd8 Rxd8 23. Rd1 Rxd1 24. Bxd1 Nd5 25. Bxe7 Qxe7 26. Qe4 g6 27. Qe5 Qc7 28. Qxc7 Nxc7 29. Kf3 Kf8 30. a4 Ke7 31. h4 h6 32. Ke4 Kd6 33. Kd3 Nd5 34. h5 Ne7 35. hxg6 fxg6 36. Bb3 g5 37. axb5 (depth 52, 3:55:22)

Online chess engines on powerul machines - what are the options?

Re: Online chess engines on powerul machines - what are the options?

Re: Online chess engines on powerul machines - what are the options?

Re: Online chess engines on powerul machines - what are the options?

Re: Online chess engines on powerul machines - what are the options?

Re: Online chess engines on powerul machines - what are the options?

Re: Online chess engines on powerul machines - what are the options?

Re: Online chess engines on powerul machines - what are the options?

Re: Online chess engines on powerul machines - what are the options?

Re: Online chess engines on powerul machines - what are the options?

Re: Online chess engines on powerul machines - what are the options?