Test position - Jakovenko, D.–Vachier Lagrave, M.

Ferdy · Post by **Ferdy** » Wed May 20, 2015 2:03 pm

How do other engines react to the pawn thrust h4? MVL here played e5.
I am in the process of re-writing my king safety. Opening the h-file is one, fracturing the pawn shelter is the other.

Jakovenko, D.2738–Vachier Lagrave, M.27541–0
A15KM FIDE GP 2015519.05.2015

[d]rnbq1rk1/ppp1ppbp/6p1/3n4/7P/2N2NP1/PP1PPPB1/R1BQK2R b KQ - 0 7

Deuterium is confused

.

Code: Select all

FEN: rnbq1rk1/ppp1ppbp/6p1/3n4/7P/2N2NP1/PP1PPPB1/R1BQK2R b KQ - 0 7

Deuterium v2015.1.35.161:
 13/31	00:03	 1,529k	500k	 0.00	1. ... Nc6 2.h5 gxh5 3.Rxh5 Nf6 4.Rc5 Nd7 5.Rh5 Nf6
 14/29	00:03	 1,827k	495k	 0.00	1. ... Nc6 2.h5 gxh5 3.Rxh5 Nf6 4.Rc5 Nd7 5.Rh5 Nf6
 15/30	00:05	 2,610k	493k	 0.00	1. ... Nc6 2.h5 gxh5 3.Rxh5 Nf6 4.Rc5 Nd7 5.Rh5 Nf6
 16/36	00:22	 11,222k	504k	 0.00	1. ... h5 2.0-0 Nc6 3.d4 Bg4 4.Rb1 Qd7 5.e4 Nb6 6.d5 Na5 7.Qe2 Nac4 8.Bf4 c5 9.dxc6
 17/32	00:27	 13,817k	503k	-0.05	1. ... h5 2.0-0 Nc6 3.Ng5 e6 4.a3 Qd7 5.e3 Nxc3 6.dxc3 f6 7.Qxd7 Bxd7 8.Rd1 Rfd8 9.Ne4 Be8 10.Rxd8 Rxd8 11.Nc5
 18/33	00:37	 19,155k	506k	-0.16	1. ... h5 2.0-0 Nc6 3.Ng5 e6 4.e3 f6 5.Nge4 a5 6.d4 b6 7.Bh3 Bd7 8.Bd2 e5 9.Bxd7 Qxd7 10.Qb3 Rfd8
 19/38	01:29	 45,586k	511k	-0.18	1. ... Nf6 2.d4 Nbd7 3.0-0 Nb6 4.b3 c6 5.e4 Bg4 6.Bg5 Nh5 7.Rc1 h6 8.Be3 Nf6 9.Bf4 Nh5 10.Be5 Bxe5
 20/38	02:25	 74,331k	510k	-0.12	1. ... Nf6 2.d4 Nbd7 3.0-0 Nb6 4.e4 Bg4 5.Qc2 c6 6.Ne2 Re8 7.Be3 Nfd7 8.Rfd1 Nf6 9.Bf4 Nh5 10.Be5 f6 11.Qb3+ e6

op12no2 · Post by **op12no2** » Wed May 20, 2015 4:08 pm

JS Stockfish 5 is confused too:-

http://op12no2.me/toys/lozza/fen.htm?e= ... 07&act=ana

(JS SF5 takes a while to initialise)

Eelco de Groot · Post by **Eelco de Groot** » Thu May 21, 2015 3:42 am

It looks like this is a position where Stockfish plays differently with PV searches than with the normal search, with only the PV move searched with a full search.

This is normal Stockfish with adapted verification search, that has a little less nullmove, but I don't know if that has an impact here, maybe a little because Multi PV also gives different best moves than single PV.

Normal seach ended with

35/51 69:41 -0.27 1...h6 2.O-O c5 3.d4 cxd4 4.Nxd5 Qxd5
5.Be3 d3 6.Ne1 Qd6 7.Nxd3 Nc6 8.Nf4 Qxd1
9.Raxd1 Bf5 10.Bc5 Bxb2 11.e4 Bc8
12.Nd5 b6 13.Bxe7 Nxe7 14.Nxe7+ Kg7 (10.326.199.296) 2469

36/51 72:06 -0.21++ 1...h6 (10.678.831.701) 2468

36/51 77:48 -0.27-- 1...h6 2.O-O (11.476.340.957) 2458

36/51 78:32 -0.21++ 1...h6 (11.584.446.478) 2458

36/51 82:39 -0.29-- 1...h6 2.O-O (12.192.168.596) 2458

36/51 83:32 -0.23 1...h6 2.O-O c5 3.d4 cxd4 4.Nxd5 Qxd5
5.Be3 Bg4 6.Nxd4 Qd7 7.Qd3 e5 8.Nb5 Qxd3
9.exd3 Nc6 10.Nd6 Rab8 11.Rfc1 e4
12.Nxe4 Rfd8 13.Rab1 Nd4 14.Rc4 b5 (12.327.924.014) 2459

37/51 92:01 -0.29-- 1...h6 2.O-O (13.602.633.035) 2463

37/51 94:06 -0.23++ 1...h6 (13.925.245.064) 2466

37/51 95:21 -0.29-- 1...h6 2.O-O (14.112.939.752) 2466

37/51 97:47 -0.22++ 1...h6 (14.488.698.533) 2469

best move: h7-h6 time: 127:47.387 min n/s: 2.469.414 nodes: 19.140.343.489

But in Multi PV, after rebooting the engine:

[d]rnbq1rk1/ppp1ppbp/6p1/3n4/7P/2N2NP1/PP1PPPB1/R1BQK2R b KQ -

Engine: SfVerification__007 MOD MP (4 threads, 512 MB)
by Tord Romstad, Marco Costalba and Joona Kiiski

34 130:53 -0.24 1...Nf6 2.O-O Na6 3.d4 c6 4.b3 Bf5
5.Bb2 Nd5 6.Ne5 Nxc3 7.Bxc3 Nc7 8.e3 Qc8
9.Ba5 Rb8 10.e4 Bxe5 11.dxe5 Bg4
12.f3 b6 13.Bc3 Bh3 14.Qe2 Bxg2 (19.580.778.612) 2493

34 130:53 -0.24 1...e5 2.h5 Nxc3 3.dxc3 Qxd1+ 4.Kxd1 Rd8+
5.Ke1 f6 6.hxg6 hxg6 7.Nd2 Nc6 8.Ne4 Ne7
9.Be3 a5 10.Rc1 Rb8 11.Ba7 Ra8
12.Bc5 Nc6 13.Be3 Ne7 14.f4 exf4 (19.580.778.612) 2493

34 130:53 -0.24 1...Nc6 2.h5 Bg4 3.h6 Bf6 4.O-O Bxf3
5.Bxf3 e6 6.Bg2 Rb8 7.Ne4 Be7 8.d3 Nd4
9.Bd2 c6 10.Rb1 Rc8 11.Re1 Qb6 12.b4 Qc7
13.a3 Rfd8 14.Qc1 Nf6 (19.580.778.612) 2493

34 130:53 -0.25 1...Bg4 2.h5 Nc6 3.h6 Bf6 4.O-O Bxf3
5.Bxf3 e6 6.Bg2 Rb8 7.Ne4 Be7 8.d3 Nd4
9.Bd2 c6 10.Rb1 Rc8 11.Nc3 Bg5 12.e3 Nb5
13.Nxb5 cxb5 14.e4 Nb6 (19.580.778.612) 2493

34 130:53 -0.27 1...h5 2.O-O c5 3.Ng5 e6 4.Nxd5 exd5
5.Qb3 c4 6.Qb5 Nc6 7.Bxd5 Na5 8.Be4 a6
9.Qb4 Bg4 10.d4 Bxe2 11.Bd2 Nc6
12.Qxb7 Nxd4 13.Qxa8 Qxa8 14.Bxa8 Bxf1 (19.580.778.612) 2493

34 130:53 -0.29 1...h6 2.d4 c5 3.Nxd5 Qxd5 4.Be3 cxd4
5.O-O d3 6.Ne1 Qd6 7.Qxd3 Qf6 8.Qd2 Kh7
9.Rc1 Nc6 10.Nd3 Bf5 11.Rc5 Rfd8
12.Rfc1 Qe6 13.b4 Be4 14.Bxe4 Qxe4 (19.580.778.612) 2493
____________________________________________________________

35 201:01 -0.19 1...Nf6 2.d4 Na6 3.Bf4 c6 4.e4 Bg4
5.Qd2 Qb6 6.Be3 Rad8 7.O-O Be6 8.d5 Qa5
9.Rad1 cxd5 10.Nxd5 Qxd2 11.Nxe7+ Kh8
12.Nxd2 Bxa2 13.Ra1 Be6 14.Nc6 bxc6 (30.288.939.476) 2511

35 201:01 -0.19 1...e5 2.h5 Nxc3 3.dxc3 Qxd1+ 4.Kxd1 Rd8+
5.Ke1 Nc6 6.Be3 f6 7.Rd1 Be6 8.Nd2 Ne7
9.Bc5 Kf7 10.b3 Nc6 11.Nc4 Rxd1+
12.Kxd1 a5 13.a4 f5 14.Bxc6 bxc6 (30.288.939.476) 2511

35 201:01 -0.26 1...h5 2.O-O c5 3.Nxd5 Qxd5 4.d3 Nc6
5.Be3 Qd6 6.Rc1 Nd4 7.Nxd4 cxd4
8.Bg5 Bg4 9.Qb3 e5 10.Rc2 Rac8
11.Rfc1 Rxc2 12.Rxc2 Rb8 13.Bd5 Qd7
14.a4 a6 (30.288.939.476) 2511

35 201:01 -0.26 1...Nc6 2.h5 Bg4 3.h6 Bf6 4.O-O Bxf3
5.Bxf3 e6 6.Bg2 Rb8 7.Rb1 Re8 8.Ne4 Be7
9.d3 Nd4 10.Bd2 c6 11.Re1 a6 12.b4 Qc7
13.a4 Rbd8 14.Qc1 e5 (30.288.939.476) 2511

35 201:01 -0.26 1...h6 2.d4 c5 3.Nxd5 Qxd5 4.Be3 cxd4
5.O-O d3 6.Ne1 Qd6 7.Qxd3 Rd8 8.Rd1 Nc6
9.Qxd6 Rxd6 10.Rxd6 exd6 11.Nd3 Bg4
12.Re1 Rc8 13.b3 a5 14.Nf4 Nb4 (30.288.939.476) 2511

35 201:01 -0.31 1...Bg4 2.h5 Nc6 3.h6 Bf6 4.O-O Bxf3
5.Bxf3 e6 6.Ne4 Rb8 7.e3 Be7 8.d4 f5
9.Nc3 Bg5 10.e4 fxe4 11.Bg4 Bxc1
12.Rxc1 Nxc3 13.Bxe6+ Kh8 14.bxc3 e3 (30.288.939.476) 2511

Ferdy · Post by **Ferdy** » Thu May 21, 2015 9:00 am

Eelco de Groot wrote:It looks like this is a position where Stockfish plays differently with PV searches than with the normal search, with only the PV move searched with a full search.

This is normal Stockfish with adapted verification search, that has a little less nullmove, but I don't know if that has an impact here, maybe a little because Multi PV also gives different best moves than single PV.

Normal seach ended with

35/51 69:41 -0.27 1...h6 2.O-O c5 3.d4 cxd4 4.Nxd5 Qxd5
5.Be3 d3 6.Ne1 Qd6 7.Nxd3 Nc6 8.Nf4 Qxd1
9.Raxd1 Bf5 10.Bc5 Bxb2 11.e4 Bc8
12.Nd5 b6 13.Bxe7 Nxe7 14.Nxe7+ Kg7 (10.326.199.296) 2469

36/51 72:06 -0.21++ 1...h6 (10.678.831.701) 2468

36/51 77:48 -0.27-- 1...h6 2.O-O (11.476.340.957) 2458

36/51 78:32 -0.21++ 1...h6 (11.584.446.478) 2458

36/51 82:39 -0.29-- 1...h6 2.O-O (12.192.168.596) 2458

36/51 83:32 -0.23 1...h6 2.O-O c5 3.d4 cxd4 4.Nxd5 Qxd5
5.Be3 Bg4 6.Nxd4 Qd7 7.Qd3 e5 8.Nb5 Qxd3
9.exd3 Nc6 10.Nd6 Rab8 11.Rfc1 e4
12.Nxe4 Rfd8 13.Rab1 Nd4 14.Rc4 b5 (12.327.924.014) 2459

37/51 92:01 -0.29-- 1...h6 2.O-O (13.602.633.035) 2463

37/51 94:06 -0.23++ 1...h6 (13.925.245.064) 2466

37/51 95:21 -0.29-- 1...h6 2.O-O (14.112.939.752) 2466

37/51 97:47 -0.22++ 1...h6 (14.488.698.533) 2469

best move: h7-h6 time: 127:47.387 min n/s: 2.469.414 nodes: 19.140.343.489

This is a reasonable move not allowing white to open the h-file. It's disadvantage is not developing other pieces that may influence play in the center, but the move h7h6 gives more priority to king safety. I run IDEA and white is trying to attack h6 by standard setup like d3/Be3 followed by Qd2.

But in Multi PV, after rebooting the engine:

[d]rnbq1rk1/ppp1ppbp/6p1/3n4/7P/2N2NP1/PP1PPPB1/R1BQK2R b KQ -

Engine: SfVerification__007 MOD MP (4 threads, 512 MB)
by Tord Romstad, Marco Costalba and Joona Kiiski

34 130:53 -0.24 1...Nf6 2.O-O Na6 3.d4 c6 4.b3 Bf5
5.Bb2 Nd5 6.Ne5 Nxc3 7.Bxc3 Nc7 8.e3 Qc8
9.Ba5 Rb8 10.e4 Bxe5 11.dxe5 Bg4
12.f3 b6 13.Bc3 Bh3 14.Qe2 Bxg2 (19.580.778.612) 2493

34 130:53 -0.24 1...e5 2.h5 Nxc3 3.dxc3 Qxd1+ 4.Kxd1 Rd8+
5.Ke1 f6 6.hxg6 hxg6 7.Nd2 Nc6 8.Ne4 Ne7
9.Be3 a5 10.Rc1 Rb8 11.Ba7 Ra8
12.Bc5 Nc6 13.Be3 Ne7 14.f4 exf4 (19.580.778.612) 2493

34 130:53 -0.24 1...Nc6 2.h5 Bg4 3.h6 Bf6 4.O-O Bxf3
5.Bxf3 e6 6.Bg2 Rb8 7.Ne4 Be7 8.d3 Nd4
9.Bd2 c6 10.Rb1 Rc8 11.Re1 Qb6 12.b4 Qc7
13.a3 Rfd8 14.Qc1 Nf6 (19.580.778.612) 2493

34 130:53 -0.25 1...Bg4 2.h5 Nc6 3.h6 Bf6 4.O-O Bxf3
5.Bxf3 e6 6.Bg2 Rb8 7.Ne4 Be7 8.d3 Nd4
9.Bd2 c6 10.Rb1 Rc8 11.Nc3 Bg5 12.e3 Nb5
13.Nxb5 cxb5 14.e4 Nb6 (19.580.778.612) 2493

34 130:53 -0.27 1...h5 2.O-O c5 3.Ng5 e6 4.Nxd5 exd5
5.Qb3 c4 6.Qb5 Nc6 7.Bxd5 Na5 8.Be4 a6
9.Qb4 Bg4 10.d4 Bxe2 11.Bd2 Nc6
12.Qxb7 Nxd4 13.Qxa8 Qxa8 14.Bxa8 Bxf1 (19.580.778.612) 2493

34 130:53 -0.29 1...h6 2.d4 c5 3.Nxd5 Qxd5 4.Be3 cxd4
5.O-O d3 6.Ne1 Qd6 7.Qxd3 Qf6 8.Qd2 Kh7
9.Rc1 Nc6 10.Nd3 Bf5 11.Rc5 Rfd8
12.Rfc1 Qe6 13.b4 Be4 14.Bxe4 Qxe4 (19.580.778.612) 2493
____________________________________________________________

35 201:01 -0.19 1...Nf6 2.d4 Na6 3.Bf4 c6 4.e4 Bg4
5.Qd2 Qb6 6.Be3 Rad8 7.O-O Be6 8.d5 Qa5
9.Rad1 cxd5 10.Nxd5 Qxd2 11.Nxe7+ Kh8
12.Nxd2 Bxa2 13.Ra1 Be6 14.Nc6 bxc6 (30.288.939.476) 2511

35 201:01 -0.19 1...e5 2.h5 Nxc3 3.dxc3 Qxd1+ 4.Kxd1 Rd8+
5.Ke1 Nc6 6.Be3 f6 7.Rd1 Be6 8.Nd2 Ne7
9.Bc5 Kf7 10.b3 Nc6 11.Nc4 Rxd1+
12.Kxd1 a5 13.a4 f5 14.Bxc6 bxc6 (30.288.939.476) 2511

35 201:01 -0.26 1...h5 2.O-O c5 3.Nxd5 Qxd5 4.d3 Nc6
5.Be3 Qd6 6.Rc1 Nd4 7.Nxd4 cxd4
8.Bg5 Bg4 9.Qb3 e5 10.Rc2 Rac8
11.Rfc1 Rxc2 12.Rxc2 Rb8 13.Bd5 Qd7
14.a4 a6 (30.288.939.476) 2511

35 201:01 -0.26 1...Nc6 2.h5 Bg4 3.h6 Bf6 4.O-O Bxf3
5.Bxf3 e6 6.Bg2 Rb8 7.Rb1 Re8 8.Ne4 Be7
9.d3 Nd4 10.Bd2 c6 11.Re1 a6 12.b4 Qc7
13.a4 Rbd8 14.Qc1 e5 (30.288.939.476) 2511

35 201:01 -0.26 1...h6 2.d4 c5 3.Nxd5 Qxd5 4.Be3 cxd4
5.O-O d3 6.Ne1 Qd6 7.Qxd3 Rd8 8.Rd1 Nc6
9.Qxd6 Rxd6 10.Rxd6 exd6 11.Nd3 Bg4
12.Re1 Rc8 13.b3 a5 14.Nf4 Nb4 (30.288.939.476) 2511

35 201:01 -0.31 1...Bg4 2.h5 Nc6 3.h6 Bf6 4.O-O Bxf3
5.Bxf3 e6 6.Ne4 Rb8 7.e3 Be7 8.d4 f5
9.Nc3 Bg5 10.e4 fxe4 11.Bg4 Bxc1
12.Rxc1 Nxc3 13.Bxe6+ Kh8 14.bxc3 e3 (30.288.939.476) 2511

Nf6 also stops activity in the h-file. I use sf6, will post IDEA results later when I get some positions.

Ferdy · Post by **Ferdy** » Thu May 21, 2015 9:17 am

op12no2 wrote:JS Stockfish 5 is confused too:-

http://op12no2.me/toys/lozza/fen.htm?e= ... 07&act=ana

(JS SF5 takes a while to initialise)

When I click the link the engine starts immediately, and is using my resources. I don't think this is a good practice, at least provide some button to press whether to run or not, and give warning that it will use my resources.

op12no2 · Post by **op12no2** » Thu May 21, 2015 1:38 pm

Fair enough Ferdinand. I won't include the &act=ana (action = analysis) on URLs any more.

WRT a warning when you click Analyse - do you mean your expectation was that it ran on the server and not in your browser?

Dann Corbit · Post by **Dann Corbit** » Fri May 22, 2015 2:46 am

Code: Select all

Analysis of X:\users\dcorbit\MOMAT.EPD   
5/21/2015 5:19:09 PM Level: 1480 Seconds
Analyzing engine: Stockfish-mingw

 1                      
    Avoid move: 
    Best move (Stockfish-mingw): Nd5-f6
    Not found in: 24:40
     2/2	00:00	         221	5,666	+0.68	Nc6 0-0
     3/4	00:00	         386	8,772	+0.72	e5 d3 Nc6
     4/5	00:00	         913	18,632	+0.35	Nc6 d4 Nxc3 bxc3
     5/5	00:00	       1,832	33,925	+0.36	Bg4 0-0 a6 d4 Nc6
     6/6	00:00	       4,209	69,000	+0.26	Nc6 d4 Bg4 0-0 a6 Qb3
     7/7	00:00	       8,536	123,710	+0.32	Nc6 0-0 Be6 Nxd5 Qxd5 d3 a6
     8/8	00:00	      11,621	150,922	+0.20	Nc6 0-0 Ndb4 d3 Bg4 Be3 Nd5 Nxd5
     9/11	00:00	      30,854	311,656	+0.17	Nc6 0-0 Be6 d4 a6 a3 Nxc3 bxc3 Bd5 Bg5
    10/14	00:00	      72,748	559,600	+0.13	Nc6 0-0 a6 d4 Nb6 d5 Nb4 Ng5 Bxc3 bxc3 N4xd5
    11/15	00:00	     169,727	800,599	+0.17	Nc6 d4 Nb6 0-0 Nxd4 Nxd4 Bxd4 Nb5 Bg7 Qxd8 Rxd8 Nxc7
    12/16	00:00	     614,282	1,629,395	-0.01	c6 0-0 Be6 d4 Nxc3 bxc3 Nd7 Ng5 Bd5 Ne4 Bc4 Bf4
    13/16	00:00	     895,234	1,786,894	-0.01	c6 0-0 Nd7 d4 N7f6 Nxd5 Qxd5 Ne5 Qd8 Bg5 h6 Bf4 Nd5 e4
    14/18	00:01	   2,243,255	2,584,395	-0.09	e5 0-0 c6 d3 Na6 Bd2 Bg4 Rc1 Nxc3 Bxc3 Qe7 d4 e4 Ng5
    15/22	00:01	   2,997,348	2,790,826	-0.14	e5 h5 Nxc3 dxc3 Qxd1+ Kxd1 Nc6 Be3 Bf5 Ke1 a5 Kf1 Rad8 Bc5 Rfe8 hxg6 Bxg6 Ng5
    16/26	00:01	   4,827,521	3,201,273	-0.09	Bg4 0-0 c6 d4 Nd7 Bg5 h6 Bd2 Nxc3 Bxc3 Qc7 Re1 c5 Rc1 Rad8 Nh2 Be6 d5 Ne5 Qd2
    17/26	00:01	   5,612,398	3,342,702	-0.13	Bg4 0-0 c6 d4 Nd7 Bg5 h6 Bd2 Nc7 Be3 Nd5 Nxd5 cxd5 Rc1 Rc8 Qd2 Rxc1 Rxc1
    18/26	00:02	   7,515,913	3,652,047	-0.08	Bg4 0-0 c6 d4 Nd7 Qb3 N7b6 e4 Nc7 Be3 Bxf3 Bxf3 Bxd4 Rad1 Ne6 Bh6 Re8 Be3
    19/26	00:02	   8,822,804	3,912,551	-0.11	Bg4 0-0 c6 d4 Nd7 Qb3 Nxc3 bxc3 Qb6 Qc2 e5 Rb1 Qa6 Rd1 exd4 cxd4 Nb6 e4 Be6 Rb2 Nc4
    20/26	00:03	  13,180,710	4,637,828	-0.13	Bg4 0-0 c6 d4 Nd7 Qb3 Nxc3 bxc3 Qb6 Qc2 e5 Rb1 Qa6 e4 exd4 cxd4 Nb6 Ne5 Bxe5 dxe5 Nc4
    21/28	00:04	  28,592,073	6,277,074	-0.19	Bg4 h5 gxh5 Nh2 Be6 Nxd5 Bxd5 Nf3 Nc6 Rxh5 Qd6 d3 Rad8 Be3 b6 Kf1 Bxb2 Rb1 Bg7 Rb5 Bxf3 Bxf3 Nd4
    22/28	00:07	  51,993,669	7,470,354	-0.24	Bg4 h5 Nc6 hxg6 fxg6 Rh4 Bxf3 Bxf3 Rxf3 exf3 Nd4 Kf1 Qd7 d3 Rf8 Nxd5 Qxd5 f4 e5 Be3 Nf5 Rh2 exf4
    23/31	00:08	  59,515,524	7,685,372	-0.22	Bg4 h5 Nc6 hxg6 fxg6 Rh4 Bxf3 Bxf3 Rxf3 exf3 Nd4 Kf1 Qd7 d3 Rf8 f4 e5 Ne4 h5 a4 exf4 Bxf4 Nxf4 gxf4 c6 Kg1
    24/35	00:10	  81,502,174	8,155,110	-0.17	Bg4 h5 gxh5 Nh2 Be6 Nxd5 Bxd5 Nf3 Nc6 Rxh5 Qd6 d3 Rad8 Kf1 Qg6 Rg5 Qe6 Be3 h6 Rh5 Bxa2 Qd2 Rd5 Rxd5 Bxd5 Bxa7
    25/35	00:16	 149,219,226	8,956,736	-0.17	Nf6 0-0 c5 d4 cxd4 Nxd4 Ng4 Nb3 Nc6 Bf4 Nge5 Qxd8 Rxd8 Rac1 Nc4 Nd5 Nb6 Nc7 Rb8 Rfd1 Bg4 f3 Bd7 Nd5 Ra8 Nc5 Bxb2 Nxb6
    26/38	00:36	 348,616,185	9,705,620	-0.27	Nf6 d4 c6 e4 Bg4 Bg5 Nbd7 Qd2 Nb6 0-0 Nc4 Qe2 Bxf3 Qxc4 Bxg2 Kxg2 Qb6 b3 Rfd8 Rad1 a6 Rfe1 Qc7 e5 Nd5 Nxd5 Rxd5 Qe2 e6
    27/38	00:52	 515,273,479	9,846,240	-0.18	Bg4 h5 gxh5 Nh2 Be6 Nxd5 Bxd5 Nf3 Nc6 Rxh5 Qd6 d3 Rfd8 Kf1 Qg6 Rg5 Qe6 Bd2 h6 Rh5 Bxa2 Bh3 Qb3 Qxb3 Bxb3 Rb5 Bd5 e4 Be6 Bxe6 fxe6 Rxb7
    28/38	01:29	 898,386,759	10,105,246	-0.31	e5 h5 Nxc3 dxc3 Qxd1+ Kxd1 Nc6 Ke1 Rd8 Be3 Ne7 hxg6 hxg6 Ng5 f6 Bc5 Nc6 Ne4 Be6 Be3 Kf7 Nc5 Bd5 Bxd5+ Rxd5 Rh7 Rh8 Rxh8 Bxh8 Nxb7 Rb5 Nc5 Rxb2
    29/47	01:52	1,154,048,072	10,242,636	-0.26	e5 h5 Nxc3 dxc3 Qxd1+ Kxd1 Nc6 Ke1 Rd8 Be3 Ne7 hxg6 hxg6 Ng5 f6 Bc5 Nc6 Ne4 Kf7 Ba3 Rb8 b4 Be6 Nc5 Bd5 Bxd5+ Rxd5 Kf1 b6 Na6 Rc8 Rh7
    30/47	02:32	1,565,484,822	10,267,763	-0.26	Nf6 d4 c6 0-0 Ng4 Bg5 h6 Bf4 Nd7 Qc2 Ndf6 Rad1 Nh5 Bc1 Qa5 Bd2 Rd8 e4 Qa6 Bc1 e5 dxe5 Be6 b3 Nxe5 Nxe5 Bxe5 Bxh6 Bg4 Rxd8+ Rxd8 Be3 b6
    31/47	03:06	1,912,739,349	10,270,734	-0.20	Nf6 d4 c6 0-0 Na6 Bg5 Nc7 Qb3 Ne6 Bxf6 exf6 e3 Nc7 d5 Nxd5 Rfd1 Be6 Qxb7 Qb6 Qxb6 axb6 Nd4 f5 Bxd5 Bxd5 Nxd5 cxd5 a3 Rfc8 Kg2 Bxd4 Rxd4 Rc2 b4
    32/47	03:30	2,153,671,387	10,259,779	-0.22	Nf6 d4 c6 0-0 Na6 Bg5 Nc7 Qb3 Ne6 Bxf6 exf6 Rfd1 b6 e3 Bb7 h5 Re8 a4 a5 Nd2 f5 Nc4 Ra6 Rac1 Qc7 Qc2 Bf6 d5 Nc5 d6 Qd7 h6 Rd8
    33/47	03:52	2,390,539,791	10,283,705	-0.22	Nf6 d4 c6 0-0 Na6 Bg5 Nc7 Qb3 Ne6 Bxf6 Bxf6 e3 Qb6 Qa3 Re8 Rfc1 Bg7 Rab1 a5 Na4 Qa7 Qb3 b5 Nc3 a4 Qb4 Bd7 Ne4 Qc7 Qc3 Red8 Nfg5 Nxg5 Nxg5
    34/47	04:51	3,005,551,882	10,331,623	-0.27	Nf6 d4 c6 0-0 Na6 Bg5 Nc7 Qb3 a6 a4 a5 Rfd1 Ncd5 Ne5 Nb4 Nc4 Bg4 Bxf6 Bxf6 d5 Qc7 Ne3 Bd7 dxc6 Bxc6 Ncd5 Nxd5 Nxd5 Qe5 Nxf6+ exf6 Rac1 Bxg2 Kxg2 Rfd8 Rxd8+ Rxd8
    35/47	06:45	4,206,385,392	10,388,470	-0.23	Nf6 d4 c6 0-0 Na6 Bg5 Nc7 Qb3 a6 a4 a5 Rfd1 Ncd5 Ne5 Nb4 Nc4 Bg4 Rd2 h6 Bf4 Nh5 Be5 Be6 Bxg7 Kxg7 e4 Bxc4 Qxc4 Nf6 d5 Qd6 Qd4 cxd5 Nxd5 Nbxd5 exd5 h5 b3
    36/47	08:52	5,559,273,606	10,438,852	-0.26	Nf6 d4 c6 0-0 Na6 Bg5 Nc7 Qb3 Ne6 Bxf6 Bxf6 e3 Qb6 Qa3 Re8 Rac1 Nc7 Ng5 h6 Nge4 Bg7 Na4 Qa5 Qb3 Qb5 Qxb5 Nxb5 Nac5 e5 Nc3 Nxc3 bxc3 Rb8 Rb1 exd4 cxd4
    37/47	11:20	7,141,253,593	10,499,419	-0.25	Nf6 d4 c6 0-0 Na6 Bg5 Nc7 Qb3 Ne6 Bxf6 Bxf6 e3 Qb6 Qa3 Re8 Rfc1 Bg7 Nd2 Nc7 Nc4 Qa6 Qb3 Bf5 Ne4 Ne6 a3 Rad8 a4 h5 Qa3 Bg4 b3 Bf5 Nc5 Nxc5 Qxc5 e6 Qb4
    38/53	21:17	13,496,936,849	10,570,594	-0.22	Nf6 d4 c6 0-0 Na6 Bg5 h6 Bf4 Qb6 Qc2 Nb4 Qc1 Ng4 Rd1 Be6 b3 Nd5 Nxd5 cxd5 Qd2 Rac8 Rac1 f6 Nh2 Nxh2 Kxh2 g5 Be3 Qa6 Kg1 b6 a4 Rfd8 Bf3 Rxc1 Rxc1 Rc8 Rc3 Qb7 Qc2 Rxc3 Qxc3 Qd7
   5/21/2015 5:43:53 PM, Time for this analysis: 00:24:40, Rated time: 24:40

Ferdy · Post by **Ferdy** » Fri May 22, 2015 4:59 am

op12no2 wrote:WRT a warning when you click Analyse - do you mean your expectation was that it ran on the server and not in your browser?

Yes.
And it does not mean that I am not willing to use my cpu, but often I use my cpu for other activities.

op12no2 · Post by **op12no2** » Fri May 22, 2015 10:05 am

Yes.
And it does not mean that I am not willing to use my cpu, but often I use my cpu for other activities.

Yep I agree and understand - I'm just wired into it and have been a little thoughtless; I'll do something

After I wrote my question and posted it I realised a lot of ppl here have their CPUs going 100% on testing and a little blip could throw it all off and potentially waste a lot of time.

Ferdy · Post by **Ferdy** » Sat May 23, 2015 9:30 am

Here is partial result of IDEA session. I use Stockfish 6 and 21May2015 Development version. Positive IDEA score is better for white and negative is better for black. The highlighted text in notation are the actual moves in the game.
MVL here played e5 which is best according to IDEA.
[AB1]

Position after 9. d3. Here MVL played 9.... Nc6 which is probably not optimal, according to IDEA the best move is 9... Bg4.
[AB2]

The pgn in the notation.
[pgn]
[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[FEN "rnbq1rk1/ppp1ppbp/6p1/3n4/7P/2N2NP1/PP1PPPB1/R1BQK2R b KQ - 0 7"]
[SetUp "1"]

7... e5 (7... Nf6 8. d4 Na6 9. O-O (9. Bg5 c6)9... c6 10. Bg5) (7... Nc6 8. h5
Nxc3 9. bxc3 e5 10. hxg6 hxg6)(7... h6 8. O-O c5 9. Nxd5 Qxd5 10. d4 cxd4 11.
Be3 Qh5 12. Nxd4 e5 13. Nb5 Nc6 14. Rc1 Rd8 15. Qb3 Be6 16. Qa3) 8. Nxd5 (8.
h5 Nxc3 9. dxc3 Qxd1+ 10. Kxd1 Rd8+ 11. Ke1 Nc6 12. hxg6 hxg6 13. Ng5 a5 14.
a4) 8... Qxd5 9. d3 Nc6 (9... Bg4 10. O-O Qd6 11. Bg5 Na6 12. Nd2 f6 13. Be3
c6) 10. h5 Bg4 11. hxg6 hxg6 12. Rh4 Qd7 13. Qa4 Be6 * [/pgn]

Test position - Jakovenko, D.–Vachier Lagrave, M.

Test position - Jakovenko, D.–Vachier Lagrave, M.

Re: Test position - Jakovenko, D.–Vachier Lagrave, M.

Re: Test position - Jakovenko, D.–Vachier Lagrave, M.

Re: Test position - Jakovenko, D.–Vachier Lagrave, M.

Re: Test position - Jakovenko, D.–Vachier Lagrave, M.

Re: Test position - Jakovenko, D.–Vachier Lagrave, M.

Re: Test position - Jakovenko, D.–Vachier Lagrave, M.

Re: Test position - Jakovenko, D.–Vachier Lagrave, M.

Re: Test position - Jakovenko, D.–Vachier Lagrave, M.

Re: Test position - Jakovenko, D.–Vachier Lagrave, M.