Botvinnik mastery

lucasart · Post by **lucasart** » Sat Aug 10, 2013 1:53 pm

emadsen wrote:
One could let strong engines play the game from the position after Rd4, where the engine plays against itself. And I bet you that all these games would be either draws, or white would win.
I ran a shootout from the position after ... Rd4 with nine strong engines, plus my own modest engine. White never lost.
Code: Select all
128 MB hash
Intel i7 960 @ 3.20 GHz
1 CPU

Shoot out&#58;
----- Time = Blitz 2m -----
Critter 1.6a 64-bit   ½-½
HIARCS 14 WCSC   1-0
Junior 12.5.0.3   ½-½
Komodo 5.1r2 64-bit   1-0
MadChess 1.3.04   1-0
Rybka 4.1 SSE42 x64   ½-½
Shredder 12 UCI   1-0
Spike 1.4   1-0
Stockfish 2.2.2 SSE42   1-0
Zappa Mexico II x64   1-0
 
Score White&#58; 85%, 10 Games

Thank you for the results. Very interesting. Now, finally, we're talking facts rather than hand waving...

Lyudmil is too biaised to see the truth

Lyudmil Tsvetkov · Post by **Lyudmil Tsvetkov** » Sat Aug 10, 2013 3:35 pm

lucasart wrote:
emadsen wrote:
One could let strong engines play the game from the position after Rd4, where the engine plays against itself. And I bet you that all these games would be either draws, or white would win.
I ran a shootout from the position after ... Rd4 with nine strong engines, plus my own modest engine. White never lost.
Code: Select all
128 MB hash
Intel i7 960 @ 3.20 GHz
1 CPU

Shoot out&#58;
----- Time = Blitz 2m -----
Critter 1.6a 64-bit   ½-½
HIARCS 14 WCSC   1-0
Junior 12.5.0.3   ½-½
Komodo 5.1r2 64-bit   1-0
MadChess 1.3.04   1-0
Rybka 4.1 SSE42 x64   ½-½
Shredder 12 UCI   1-0
Spike 1.4   1-0
Stockfish 2.2.2 SSE42   1-0
Zappa Mexico II x64   1-0
 
Score White&#58; 85%, 10 Games
Thank you for the results. Very interesting. Now, finally, we're talking facts rather than hand waving...

Lyudmil is too biaised to see the truth

Lucas, please repeat the same shootout from position N2:
[D][D]1r4k1/2bbq2p/8/p1p1p1p1/2PpPp2/1P3P2/P1Q2BPP/3R1RK1 w - - 0 33
which follows almost in a fully forced way from the main position, and report the results, if you do not mind. I already asked Erik to do so, I hope he will be able to complete another test run. Or, alternatively, you could run shootouts with different time controls with Disco of both positions. You will see that, even though Disco might evaluate both positions almost equally, it will lose with black often in the first position, but almost never in the second.

The problem with engines is that do not see the right continuation from the main diagram, which necessarily includes playing f7-f5-f4 for black, followed by further storms. If you do not play f7-f5-f4, it is very likely that you are going to lose with black.

I hope very much someone is going to post results with such a shootout, to be able to talk facts, and not just to wave hands

zullil · Post by **zullil** » Sat Aug 10, 2013 3:57 pm

lucasart wrote:
emadsen wrote:
One could let strong engines play the game from the position after Rd4, where the engine plays against itself. And I bet you that all these games would be either draws, or white would win.
I ran a shootout from the position after ... Rd4 with nine strong engines, plus my own modest engine. White never lost.
Code: Select all
128 MB hash
Intel i7 960 @ 3.20 GHz
1 CPU

Shoot out&#58;
----- Time = Blitz 2m -----
Critter 1.6a 64-bit   ½-½
HIARCS 14 WCSC   1-0
Junior 12.5.0.3   ½-½
Komodo 5.1r2 64-bit   1-0
MadChess 1.3.04   1-0
Rybka 4.1 SSE42 x64   ½-½
Shredder 12 UCI   1-0
Spike 1.4   1-0
Stockfish 2.2.2 SSE42   1-0
Zappa Mexico II x64   1-0
 
Score White&#58; 85%, 10 Games
Thank you for the results. Very interesting. Now, finally, we're talking facts rather than hand waving...

Lyudmil is too biaised to see the truth

The data may be irrelevant. If, as Lyudmil suggests, engines simply do not know how to proceed in such positions, then the results from engine testing simply confirms their ignorance.

Let's have Lyudmil play Black against Stockfish, starting from

[D]1r1r2k1/2b1qp1p/b1p3p1/p1p1p3/2P1P3/1PN1BP2/P1Q3PP/R2R2K1 b - - 0 25

I assume he'll start with Rd4!!

Lyudmil Tsvetkov · Post by **Lyudmil Tsvetkov** » Sat Aug 10, 2013 4:36 pm

zullil wrote:
lucasart wrote:
emadsen wrote:
One could let strong engines play the game from the position after Rd4, where the engine plays against itself. And I bet you that all these games would be either draws, or white would win.
I ran a shootout from the position after ... Rd4 with nine strong engines, plus my own modest engine. White never lost.
Code: Select all
128 MB hash
Intel i7 960 @ 3.20 GHz
1 CPU

Shoot out&#58;
----- Time = Blitz 2m -----
Critter 1.6a 64-bit   ½-½
HIARCS 14 WCSC   1-0
Junior 12.5.0.3   ½-½
Komodo 5.1r2 64-bit   1-0
MadChess 1.3.04   1-0
Rybka 4.1 SSE42 x64   ½-½
Shredder 12 UCI   1-0
Spike 1.4   1-0
Stockfish 2.2.2 SSE42   1-0
Zappa Mexico II x64   1-0
 
Score White&#58; 85%, 10 Games
Thank you for the results. Very interesting. Now, finally, we're talking facts rather than hand waving...

Lyudmil is too biaised to see the truth
The data may be irrelevant. If, as Lyudmil suggests, engines simply do not know how to proceed in such positions, then the results from engine testing simply confirms their ignorance.

Let's have Lyudmil play Black against Stockfish, starting from

[D]1r1r2k1/2b1qp1p/b1p3p1/p1p1p3/2P1P3/1PN1BP2/P1Q3PP/R2R2K1 b - - 0 25

I assume he'll start with Rd4!!

I do not know about Stockfish, but I can challenge DiscoCheck for the title of average chess champion. Disco will represent the average engine side, and me, the average human side.

zullil · Post by **zullil** » Sat Aug 10, 2013 5:31 pm

Lyudmil Tsvetkov wrote: I do not know about Stockfish, but I can challenge DiscoCheck for the title of average chess champion. Disco will represent the average engine side, and me, the average human side.

OK, DiscoCheck plays 26. Bxd4

[D]1r4k1/2b1qp1p/b1p3p1/p1p1p3/2PBP3/1PN2P2/P1Q3PP/R2R2K1 b - - 0 26

Your move!

Lyudmil Tsvetkov · Post by **Lyudmil Tsvetkov** » Sat Aug 10, 2013 6:19 pm

zullil wrote:
Lyudmil Tsvetkov wrote: I do not know about Stockfish, but I can challenge DiscoCheck for the title of average chess champion. Disco will represent the average engine side, and me, the average human side.
OK, DiscoCheck plays 26. Bxd4

[D]1r4k1/2b1qp1p/b1p3p1/p1p1p3/2PBP3/1PN2P2/P1Q3PP/R2R2K1 b - - 0 26

Your move!

Hi Louis.
You make me laugh

There is no way to control the fairness of competition. Perhaps Disco will use Stockfish for advice, or I might use Disco to decide on my moves...

I would urge again any chess friend to make the suggested shootout, starting from the second position, and kindly report the results. I would confess defeat if white scores better in the shootout. There should not be big difference between the 2 positions in terms engines evaluate them, but in the second one there is simply no way to go wrong, while in the first there is, and therefore shootouts show white in advantage.

Or, if Lucas wishes, in the second position he might put a knight on d3 instead of the bishop on f2, I do not mind.

zullil · Post by **zullil** » Sat Aug 10, 2013 7:39 pm

Lyudmil Tsvetkov wrote: I would urge again any chess friend to make the suggested shootout, starting from the second position

I notice that when Stockfish eventually captures the rook on d4, it immediately replies to the recapture cxd4 with c5. For example,

Code: Select all

info depth 46 seldepth 61 score cp -121 nodes 12855780744 nps 7984664 time 1610059 multipv 1 pv d8d4 c3a4 a6c8 a1c1 g8g7 c2f2 f7f6 a4b2 c8e6 b2d3 b8d8 f2c2 d8b8 c2e2 b8d8 d3b2 d8a8 e2c2 a8b8 e3f2 e7d6 f2d4 c5d4 c4c5 d6d8 c2f2 d8e7 d1f1 b8d8 b2a4 d8b8 f1d1 e6c8 f2c2 b8b4 c2d2 c8a6 a4b2 b4b8 b2d3 a6c8 d1e1 c8a6 e1d1

Lyudmil Tsvetkov · Post by **Lyudmil Tsvetkov** » Sat Aug 10, 2013 8:25 pm

zullil wrote:
Lyudmil Tsvetkov wrote: I would urge again any chess friend to make the suggested shootout, starting from the second position
I notice that when Stockfish eventually captures the rook on d4, it immediately replies to the recapture cxd4 with c5. For example,
Code: Select all
info depth 46 seldepth 61 score cp -121 nodes 12855780744 nps 7984664 time 1610059 multipv 1 pv d8d4 c3a4 a6c8 a1c1 g8g7 c2f2 f7f6 a4b2 c8e6 b2d3 b8d8 f2c2 d8b8 c2e2 b8d8 d3b2 d8a8 e2c2 a8b8 e3f2 e7d6 f2d4 c5d4 c4c5 d6d8 c2f2 d8e7 d1f1 b8d8 b2a4 d8b8 f1d1 e6c8 f2c2 b8b4 c2d2 c8a6 a4b2 b4b8 b2d3 a6c8 d1e1 c8a6 e1d1

Yeah, that might be another option, possibly good, black continues in the same way, with Bc8, f5, etc. I do not know what happens then, black will still have attacking opportunities on the king side, but white will have some counterplay (though slow) on the queen side. Possibly Na4 is the much better move, but Stock does not even consider f5, which is the real black threat.

Louis, do you have any idea how Stock evaluates position N2 from the actual game that I posted?

zullil · Post by **zullil** » Sun Aug 11, 2013 1:26 am

Lyudmil Tsvetkov wrote: Louis, do you have any idea how Stock evaluates position N2 from the actual game that I posted?

If you mean this position

[D]1r4k1/2bbq2p/8/p1p1p1p1/2PpPp2/1P3P2/P1Q2BPP/3R1RK1 w - - 0 33

then Stockfish thinks White has a small advantage:

Code: Select all

Searching&#58; 1r4k1/2bbq2p/8/p1p1p1p1/2PpPp2/1P3P2/P1Q2BPP/3R1RK1 w - - 0 33
infinite&#58; 1 ponder&#58; 0 time&#58; 0 increment&#58; 0 moves to go&#58; 0
 1   +1.62   00&#58;00      40  Qd2 
 2   +1.62   00&#58;00     295  Qd2 a4 
 3   +1.01   00&#58;00     936  Qd2 a4 Qd3 axb3 axb3 
 4   +1.01   00&#58;00    1633  Qd2 a4 Qd3 axb3 axb3 
 5   +0.85   00&#58;00    7333  Qd3 a4 Rb1 axb3 axb3 
 6   +0.93   00&#58;00    9003  Qd2 a4 Rb1 Be6 Rfd1 axb3 axb3 
 7   +0.91   00&#58;00   15365  Rb1 g4 Kh1 gxf3 gxf3 Qg5 Rg1 
 8   +0.75   00&#58;00   62244  Rb1 g4 Kh1 Qg5 Qd2 Qg6 Bh4 gxf3 gxf3 Bh3 
 9   +0.69   00&#58;00  119377  Qe2 a4 Rb1 Qd6 Rfd1 Kg7 Rb2 axb3 axb3 
10   +0.69   00&#58;00  159285  Qe2 a4 Rb1 Qd6 Rfd1 Kg7 Rb2 Rb4 Be1 Rb8 Rd3 Bc6 Rd1 
                            axb3 axb3 
11   +0.67   00&#58;00  257732  Qe2 a4 Rb1 Qd6 Rfd1 Kg7 Rb2 Rb4 Be1 Rb8 h4 axb3 hxg5 
                            Ba4 axb3 Bxb3 
12   +0.67   00&#58;00  379225  Qe2 a4 Rb1 Qd6 Rfd1 Kg7 Rb2 Rb4 Be1 Rb8 h4 axb3 hxg5 
                            Ba4 axb3 Bxb3 
13   +0.61   00&#58;01   1541K  h3 a4 Ra1 Qd6 Rfd1 Kg7 Qd3 Ra8 Rdb1 Be6 Kh2 Bf7 Rf1 
                            axb3 axb3 
14   +0.67   00&#58;01   2371K  h3 a4 Rb1 Qd6 Rfd1 Qa6 Ra1 Ra8 Qb2 Qb7 Be1 Be6 Rab1 
                            axb3 Qxb3 Qxb3 axb3 
15   +0.71   00&#58;01   3400K  h3 a4 Rb1 h5 bxa4 Ra8 Rb5 Kf7 Rfb1 Qd6 R1b2 Bxb5 
                            cxb5 Ke7 Rb1 Ba5 a3 Qb6 Qc4 Bc3 
16   +0.71   00&#58;02   3528K  h3 a4 Rb1 h5 bxa4 Ra8 Rb5 Kf7 Rfb1 Qd6 R1b2 Bxb5 
                            cxb5 Ke7 Rb1 Ba5 a3 Qb6 Qc4 Bc3 
17   +0.55   00&#58;02   9317K  h3 a4 Rd3 Qd6 Ra1 Kg7 Be1 Qa6 Rdd1 Be6 Bd2 Ra8 Qb2 
                            Qd6 Qb1 axb3 axb3 Rxa1 Qxa1 Qb6 
18   +0.46   00&#58;05  27635K  Qd3 g4 fxg4 Bxg4 Rb1 Qg5 Be1 Kg7 Bd2 Bh5 Rf2 Qg6 
                            Rbf1 Qg5 Kh1 Qg4 Kg1 Qh4 g3 Qh3 Qb1 Qg4 Qd3 
19   +0.57   00&#58;06  36423K  Qe2 a4 Rb1 Qd6 Rfd1 Kg7 Qd2 axb3 axb3 g4 Bh4 Qg6 Kh1 
                            Qh5 Qf2 Rb6 Be7 Rh6 
20   +0.55   00&#58;06  37192K  Qe2 a4 Rb1 Qd6 Rfd1 Kg7 Qc2 axb3 axb3 g4 Ra1 Qb6 Qd3 
                            Bd8 Ra3 gxf3 Qxf3 Qb7 Rda1 Bf6 Ra7 
21   +0.48   00&#58;07  42553K  Qe2 a4 Rb1 Qd6 Rfd1 Kg7 Qc2 g4 bxa4 Ra8 Rb5 Bd8 Qb3 
                            Be7 Kf1 gxf3 gxf3 Qa6 a3 Bxb5 axb5 Qxa3 Qxa3 Rxa3 
                            Ke2 Bd8 
22   +0.40   00&#58;12  79854K  Qe2 a4 Rb1 Qd6 Rfd1 Kg7 Qc2 g4 bxa4 Ra8 Rb5 Bd8 Qb3 
                            Be7 Kf1 Qe6 Ke2 Qa6 a3 Qe6 Rb6 Bc6 Rb1 h6 Rb5 Bxb5 
                            axb5 gxf3+ gxf3 
23   +0.59   00&#58;19 132369K  Qe2 a4 Rb1 Qd6 Rfc1 axb3 axb3 Qg6 Kh1 g4 Bh4 Bd6 Rd1 
                            Qh5 Qf2 Qh6 Rd3 Ra8 Rg1 Kg7 Rdd1 Rb8 Rb1 Qh5 Rgd1 
                            Bc6 Rg1 Bd7 
24   +0.48   00&#58;20 143104K  Qe2 a4 Rb1 Qd6 Rfc1 axb3 axb3 Qg6 Kh1 g4 Bh4 Bd6 Rd1 
                            Qh5 Qf2 Qh6 Re1 Qg6 Rec1 Qh5 Rg1 Kg7 Rgd1 Bc6 Rg1 
                            Bd7 
25   +0.48   00&#58;22 157769K  Qe2 a4 Rb1 Qd6 Rfc1 axb3 axb3 g4 Bh4 Qg6 Kh1 Bd6 Rd1 
                            Qh5 Qf2 Qh6 Re1 Qg6 Rec1 Qh5 Rg1 Kg7 Rgd1 Bc6 Rg1 
                            Bd7 
26   +0.28   01&#58;25 670606K  Qe2 g4 Kh1 a4 Rb1 axb3 axb3 Qg5 Be1 Bd6 Ba5 Kh8 Rb2 
                            Rg8 fxg4 Bxg4 Qd3 Be6 Ra2 Qh5 Kg1 Qh4 Rfa1 Ra8 Qc2 
                            Rg8 Bb6 f3 g3 Qh3 
27   +0.30   01&#58;54 894190K  Be1 g4 fxg4 Qg5 h3 h5 gxh5 Bxh3 Bh4 Qxh4 gxh3 Kf7 
                            Rd3 Qxh5 Kh2 Bd8 Rg1 Bf6 Rg4 Ke7 Kg1 Ke6 Qg2 Qh7 Kh2 
                            Kf7 Kg1 Ke6 
28   +0.32   02&#58;01 948386K  Be1 g4 fxg4 Qg5 h3 h5 gxh5 Bxh3 Bh4 Qxh4 gxh3 Kf7 
                            Rd3 Qxh5 Qg2 Qh7 Qf3 Rh8 Rf2 Qh4 Rg2 Qe1+ Kh2 
29   +0.26   02&#58;35   1215M  Be1 g4 fxg4 Bxg4 Rb1 Qd6 Rb2 Bd7 Qd3 Qg6 a3 Bc6 Re2 
                            Kh8 Rff2 Qe6 Rb2 Qg6 Rfe2 Rf8 Kh1 Qg4 h3 Qe6 b4 axb4 
                            axb4 f3 
30   +0.22   02&#58;55   1368M  Be1 g4 fxg4 Bxg4 Rb1 Qd6 Rb2 Bd7 Qd3 Qg6 a3 Kg7 Rff2 
                            Bc6 Rfe2 Rf8 Kh1 Ra8 Rb1 Bd8 Ra1 Be7 Kg1 Qe6 Raa2 
                            Qg4 Rab2 Qe6 Ra2 
31   +0.32   03&#58;19   1552M  Be1 g4 fxg4 Bxg4 Rb1 Bd7 Qd3 Qg7 a3 Qg6 Rf2 Bc6 Re2 
                            Rf8 Kh1 Qg4 Qf3 Qe6 Bd2 Kh8 b4 cxb4 axb4 Qxc4 bxa5 
                            Qa4 Rc1 Rb8 Rf2 Ra8 Kg1 Bxa5 Bxa5 
32   +0.24   04&#58;43   2217M  Be1 g4 fxg4 Bxg4 Rb1 Qf7 Rf2 Be6 a3 Kh8 Rc1 Qg6 Qd3 
                            Bd7 Rb1 Rf8 Re2 Bg4 Rc2 Bd7 Kh1 Bc6 Re2 Qg4 Qf3 Qe6 
                            a4 Qg6 Bh4 Bd6 Rd1 Rg8 g3 
33   +0.24   05&#58;46   2711M  Be1 g4 fxg4 Bxg4 Rb1 Qf7 Rf2 Be6 a3 Kh8 Rc1 Qg6 Qd3 
                            Bd7 Rb1 Rf8 Kh1 Bc6 Re2 Qg4 Qf3 Qe6 Rbb2 Ra8 Qd3 Bd6 
                            Kg1 Kg7 Rb1 Qg6 b4 cxb4 axb4 axb4 
34   +0.36   06&#58;42   3164M  Be1 g4 fxg4 Bxg4 Rb1 Qf7 Rf2 Be6 a3 Kh8 Rc1 Qg6 Qd3 
                            Bd7 Rb1 Rf8 Kh1 Bc6 Re2 Qg4 Qf3 Qe6 Rbb2 Ra8 Bh4 Bd6 
                            a4 Qg6 Rb1 Rb8 Kg1 Kg8 Rbb2 Rb4 
35   +0.20   12&#58;38   6113M  Be1 g4 fxg4 Bxg4 Rb1 Bd7 a3 Bc6 Rf2 Qe6 Qd3 Kh8 b4 
                            Qg6 Re2 axb4 axb4 cxb4 Bxb4 Ra8 Be7 Qe6 Ba3 Qg6 Qf3 
                            Kg7 Bb4 Bd8 Qd3 Bc7 Qh3 Bd6 Bxd6 Qxd6 g3 d3 Rf2 Qd4 
                            gxf4 
36   +0.24   15&#58;41   7604M  Be1 g4 fxg4 Bxg4 Rb1 Bd7 a3 Bc6 Rf2 Qe6 Qd3 Qg4 Bd2 
                            Qg6 Re2 Kh8 b4 axb4 axb4 cxb4 Bxb4 Ra8 Rbb2 Ra1+ 
37   +0.26   20&#58;57  10195M  Be1 g4 fxg4 Bxg4 Rb1 Qd6 Qd3 Qg6 a3 Bd7 Rf2 Bc6 Re2 
                            Rf8 Kh1 Qg4 Qf3 Qe6 Bd2 Kh8 Qd3 Qg4 Rf1 Rb8 
38   +0.28   25&#58;39  12526M  Be1 g4 fxg4 Bxg4 Rb1 Qd6 Qd3 Qg6 Rf2 Bd7 Kh1 Bc6 Re2 
                            Qg4 Qf3 Qg6 a3 Qe6 Qd3 Qg4 b4 
39   +0.28   28&#58;15  13845M  Be1 g4 fxg4 Bxg4 Rb1 Qd6 Qd3 Qg6 Rf2 Bd7 Kh1 Bc6 Re2 
                            Qg4 Qf3 Qg6 a3 Qe6 Qd3 Qg4 b4 
40   +0.28   32&#58;40  16070M  Be1 g4 fxg4 Bxg4 Rb1 Qd6 Qd3 Qg6 Rf2 Bd7 Kh1 Bc6 Re2 
                            Qg4 Qf3 Qg6 a3 Qe6 Qd3 Qg6 b4 axb4 axb4 cxb4 Rxb4 
Nodes&#58; 18927790950
Nodes/second&#58; 8231260
Best move&#58; Be1
Ponder move&#58; g4

Lyudmil Tsvetkov · Post by **Lyudmil Tsvetkov** » Sun Aug 11, 2013 5:15 am

zullil wrote:

Lyudmil Tsvetkov wrote: Louis, do you have any idea how Stock evaluates position N2 from the actual game that I posted?

If you mean this position

[D]1r4k1/2bbq2p/8/p1p1p1p1/2PpPp2/1P3P2/P1Q2BPP/3R1RK1 w - - 0 33

then Stockfish thinks White has a small advantage:

Code: Select all

Searching&#58; 1r4k1/2bbq2p/8/p1p1p1p1/2PpPp2/1P3P2/P1Q2BPP/3R1RK1 w - - 0 33
infinite&#58; 1 ponder&#58; 0 time&#58; 0 increment&#58; 0 moves to go&#58; 0
 1   +1.62   00&#58;00      40  Qd2 
 2   +1.62   00&#58;00     295  Qd2 a4 
 3   +1.01   00&#58;00     936  Qd2 a4 Qd3 axb3 axb3 
 4   +1.01   00&#58;00    1633  Qd2 a4 Qd3 axb3 axb3 
 5   +0.85   00&#58;00    7333  Qd3 a4 Rb1 axb3 axb3 
 6   +0.93   00&#58;00    9003  Qd2 a4 Rb1 Be6 Rfd1 axb3 axb3 
 7   +0.91   00&#58;00   15365  Rb1 g4 Kh1 gxf3 gxf3 Qg5 Rg1 
 8   +0.75   00&#58;00   62244  Rb1 g4 Kh1 Qg5 Qd2 Qg6 Bh4 gxf3 gxf3 Bh3 
 9   +0.69   00&#58;00  119377  Qe2 a4 Rb1 Qd6 Rfd1 Kg7 Rb2 axb3 axb3 
10   +0.69   00&#58;00  159285  Qe2 a4 Rb1 Qd6 Rfd1 Kg7 Rb2 Rb4 Be1 Rb8 Rd3 Bc6 Rd1 
                            axb3 axb3 
11   +0.67   00&#58;00  257732  Qe2 a4 Rb1 Qd6 Rfd1 Kg7 Rb2 Rb4 Be1 Rb8 h4 axb3 hxg5 
                            Ba4 axb3 Bxb3 
12   +0.67   00&#58;00  379225  Qe2 a4 Rb1 Qd6 Rfd1 Kg7 Rb2 Rb4 Be1 Rb8 h4 axb3 hxg5 
                            Ba4 axb3 Bxb3 
13   +0.61   00&#58;01   1541K  h3 a4 Ra1 Qd6 Rfd1 Kg7 Qd3 Ra8 Rdb1 Be6 Kh2 Bf7 Rf1 
                            axb3 axb3 
14   +0.67   00&#58;01   2371K  h3 a4 Rb1 Qd6 Rfd1 Qa6 Ra1 Ra8 Qb2 Qb7 Be1 Be6 Rab1 
                            axb3 Qxb3 Qxb3 axb3 
15   +0.71   00&#58;01   3400K  h3 a4 Rb1 h5 bxa4 Ra8 Rb5 Kf7 Rfb1 Qd6 R1b2 Bxb5 
                            cxb5 Ke7 Rb1 Ba5 a3 Qb6 Qc4 Bc3 
16   +0.71   00&#58;02   3528K  h3 a4 Rb1 h5 bxa4 Ra8 Rb5 Kf7 Rfb1 Qd6 R1b2 Bxb5 
                            cxb5 Ke7 Rb1 Ba5 a3 Qb6 Qc4 Bc3 
17   +0.55   00&#58;02   9317K  h3 a4 Rd3 Qd6 Ra1 Kg7 Be1 Qa6 Rdd1 Be6 Bd2 Ra8 Qb2 
                            Qd6 Qb1 axb3 axb3 Rxa1 Qxa1 Qb6 
18   +0.46   00&#58;05  27635K  Qd3 g4 fxg4 Bxg4 Rb1 Qg5 Be1 Kg7 Bd2 Bh5 Rf2 Qg6 
                            Rbf1 Qg5 Kh1 Qg4 Kg1 Qh4 g3 Qh3 Qb1 Qg4 Qd3 
19   +0.57   00&#58;06  36423K  Qe2 a4 Rb1 Qd6 Rfd1 Kg7 Qd2 axb3 axb3 g4 Bh4 Qg6 Kh1 
                            Qh5 Qf2 Rb6 Be7 Rh6 
20   +0.55   00&#58;06  37192K  Qe2 a4 Rb1 Qd6 Rfd1 Kg7 Qc2 axb3 axb3 g4 Ra1 Qb6 Qd3 
                            Bd8 Ra3 gxf3 Qxf3 Qb7 Rda1 Bf6 Ra7 
21   +0.48   00&#58;07  42553K  Qe2 a4 Rb1 Qd6 Rfd1 Kg7 Qc2 g4 bxa4 Ra8 Rb5 Bd8 Qb3 
                            Be7 Kf1 gxf3 gxf3 Qa6 a3 Bxb5 axb5 Qxa3 Qxa3 Rxa3 
                            Ke2 Bd8 
22   +0.40   00&#58;12  79854K  Qe2 a4 Rb1 Qd6 Rfd1 Kg7 Qc2 g4 bxa4 Ra8 Rb5 Bd8 Qb3 
                            Be7 Kf1 Qe6 Ke2 Qa6 a3 Qe6 Rb6 Bc6 Rb1 h6 Rb5 Bxb5 
                            axb5 gxf3+ gxf3 
23   +0.59   00&#58;19 132369K  Qe2 a4 Rb1 Qd6 Rfc1 axb3 axb3 Qg6 Kh1 g4 Bh4 Bd6 Rd1 
                            Qh5 Qf2 Qh6 Rd3 Ra8 Rg1 Kg7 Rdd1 Rb8 Rb1 Qh5 Rgd1 
                            Bc6 Rg1 Bd7 
24   +0.48   00&#58;20 143104K  Qe2 a4 Rb1 Qd6 Rfc1 axb3 axb3 Qg6 Kh1 g4 Bh4 Bd6 Rd1 
                            Qh5 Qf2 Qh6 Re1 Qg6 Rec1 Qh5 Rg1 Kg7 Rgd1 Bc6 Rg1 
                            Bd7 
25   +0.48   00&#58;22 157769K  Qe2 a4 Rb1 Qd6 Rfc1 axb3 axb3 g4 Bh4 Qg6 Kh1 Bd6 Rd1 
                            Qh5 Qf2 Qh6 Re1 Qg6 Rec1 Qh5 Rg1 Kg7 Rgd1 Bc6 Rg1 
                            Bd7 
26   +0.28   01&#58;25 670606K  Qe2 g4 Kh1 a4 Rb1 axb3 axb3 Qg5 Be1 Bd6 Ba5 Kh8 Rb2 
                            Rg8 fxg4 Bxg4 Qd3 Be6 Ra2 Qh5 Kg1 Qh4 Rfa1 Ra8 Qc2 
                            Rg8 Bb6 f3 g3 Qh3 
27   +0.30   01&#58;54 894190K  Be1 g4 fxg4 Qg5 h3 h5 gxh5 Bxh3 Bh4 Qxh4 gxh3 Kf7 
                            Rd3 Qxh5 Kh2 Bd8 Rg1 Bf6 Rg4 Ke7 Kg1 Ke6 Qg2 Qh7 Kh2 
                            Kf7 Kg1 Ke6 
28   +0.32   02&#58;01 948386K  Be1 g4 fxg4 Qg5 h3 h5 gxh5 Bxh3 Bh4 Qxh4 gxh3 Kf7 
                            Rd3 Qxh5 Qg2 Qh7 Qf3 Rh8 Rf2 Qh4 Rg2 Qe1+ Kh2 
29   +0.26   02&#58;35   1215M  Be1 g4 fxg4 Bxg4 Rb1 Qd6 Rb2 Bd7 Qd3 Qg6 a3 Bc6 Re2 
                            Kh8 Rff2 Qe6 Rb2 Qg6 Rfe2 Rf8 Kh1 Qg4 h3 Qe6 b4 axb4 
                            axb4 f3 
30   +0.22   02&#58;55   1368M  Be1 g4 fxg4 Bxg4 Rb1 Qd6 Rb2 Bd7 Qd3 Qg6 a3 Kg7 Rff2 
                            Bc6 Rfe2 Rf8 Kh1 Ra8 Rb1 Bd8 Ra1 Be7 Kg1 Qe6 Raa2 
                            Qg4 Rab2 Qe6 Ra2 
31   +0.32   03&#58;19   1552M  Be1 g4 fxg4 Bxg4 Rb1 Bd7 Qd3 Qg7 a3 Qg6 Rf2 Bc6 Re2 
                            Rf8 Kh1 Qg4 Qf3 Qe6 Bd2 Kh8 b4 cxb4 axb4 Qxc4 bxa5 
                            Qa4 Rc1 Rb8 Rf2 Ra8 Kg1 Bxa5 Bxa5 
32   +0.24   04&#58;43   2217M  Be1 g4 fxg4 Bxg4 Rb1 Qf7 Rf2 Be6 a3 Kh8 Rc1 Qg6 Qd3 
                            Bd7 Rb1 Rf8 Re2 Bg4 Rc2 Bd7 Kh1 Bc6 Re2 Qg4 Qf3 Qe6 
                            a4 Qg6 Bh4 Bd6 Rd1 Rg8 g3 
33   +0.24   05&#58;46   2711M  Be1 g4 fxg4 Bxg4 Rb1 Qf7 Rf2 Be6 a3 Kh8 Rc1 Qg6 Qd3 
                            Bd7 Rb1 Rf8 Kh1 Bc6 Re2 Qg4 Qf3 Qe6 Rbb2 Ra8 Qd3 Bd6 
                            Kg1 Kg7 Rb1 Qg6 b4 cxb4 axb4 axb4 
34   +0.36   06&#58;42   3164M  Be1 g4 fxg4 Bxg4 Rb1 Qf7 Rf2 Be6 a3 Kh8 Rc1 Qg6 Qd3 
                            Bd7 Rb1 Rf8 Kh1 Bc6 Re2 Qg4 Qf3 Qe6 Rbb2 Ra8 Bh4 Bd6 
                            a4 Qg6 Rb1 Rb8 Kg1 Kg8 Rbb2 Rb4 
35   +0.20   12&#58;38   6113M  Be1 g4 fxg4 Bxg4 Rb1 Bd7 a3 Bc6 Rf2 Qe6 Qd3 Kh8 b4 
                            Qg6 Re2 axb4 axb4 cxb4 Bxb4 Ra8 Be7 Qe6 Ba3 Qg6 Qf3 
                            Kg7 Bb4 Bd8 Qd3 Bc7 Qh3 Bd6 Bxd6 Qxd6 g3 d3 Rf2 Qd4 
                            gxf4 
36   +0.24   15&#58;41   7604M  Be1 g4 fxg4 Bxg4 Rb1 Bd7 a3 Bc6 Rf2 Qe6 Qd3 Qg4 Bd2 
                            Qg6 Re2 Kh8 b4 axb4 axb4 cxb4 Bxb4 Ra8 Rbb2 Ra1+ 
37   +0.26   20&#58;57  10195M  Be1 g4 fxg4 Bxg4 Rb1 Qd6 Qd3 Qg6 a3 Bd7 Rf2 Bc6 Re2 
                            Rf8 Kh1 Qg4 Qf3 Qe6 Bd2 Kh8 Qd3 Qg4 Rf1 Rb8 
38   +0.28   25&#58;39  12526M  Be1 g4 fxg4 Bxg4 Rb1 Qd6 Qd3 Qg6 Rf2 Bd7 Kh1 Bc6 Re2 
                            Qg4 Qf3 Qg6 a3 Qe6 Qd3 Qg4 b4 
39   +0.28   28&#58;15  13845M  Be1 g4 fxg4 Bxg4 Rb1 Qd6 Qd3 Qg6 Rf2 Bd7 Kh1 Bc6 Re2 
                            Qg4 Qf3 Qg6 a3 Qe6 Qd3 Qg4 b4 
40   +0.28   32&#58;40  16070M  Be1 g4 fxg4 Bxg4 Rb1 Qd6 Qd3 Qg6 Rf2 Bd7 Kh1 Bc6 Re2 
                            Qg4 Qf3 Qg6 a3 Qe6 Qd3 Qg6 b4 axb4 axb4 cxb4 Rxb4 
Nodes&#58; 18927790950
Nodes/second&#58; 8231260
Best move&#58; Be1
Ponder move&#58; g4

Thanks Louis.
It is interesting how Stockfish gets from +1.62 score at ply 1 to only +0.28 at ply 40. Search is great

However, if you had to hit that position 20 moves earlier, the engine would think that black is considerably worse, and probably discard it automatically.

Botvinnik mastery

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Re: Botvinnik mastery

Re: Botvinnik mastery

Re: Botvinnik mastery

Re: Botvinnik mastery

Re: Botvinnik mastery

Re: Botvinnik mastery

Re: Botvinnik mastery