Designing an analysis friendly Stockfish?

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Jeremy Bernstein
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Re: Designing an analysis friendly Stockfish?

Post by Jeremy Bernstein » Sat Feb 05, 2011 2:18 pm

New builds, based on PA_J + GTB, attached. github updated.

Testing so far seems good. I chucked the tournament I was running in favor of a very fast tournament when I discovered an issue with the opening books (I was using Stockfish's own book for all 3 engines. Apparently Stockfish only knows how to play the Najdorf.). I guess that this is why I don't generally run tests -- too dumb. Stockfish_64 and Stockfish_PA_I_GTB_64 were neck in neck, with PA_J_64 about 6 games behind. With a round-robin tourney of 75 games, that could mean anything.

In general, very drawish play between these 3 engines, which is to be expected. I don't think the modifications have much, if any effect on strength, time management, etc. whatsoever, at least not at these time controls.

BTW, I increased the number of cores on my VM to 2, so we're seeing multicore runs here.

New tourney. 5 seconds + 100ms, 300 games total which makes for a better sample size. I suspect that the PA_J is a tiny bit weaker than PA_I based on what I was seeing in the 1/1 games, but let's see how it fares at these time controls.
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Jeremy Bernstein
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Joined: Wed Jun 09, 2010 7:49 am
Real Name: Jeremy Bernstein
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Re: Designing an analysis friendly Stockfish?

Post by Jeremy Bernstein » Sat Feb 05, 2011 4:36 pm

In case anyone else wants to run some tests, here are the 3 engines I'm working with, all compiled with exactly the same settings.
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Jeremy Bernstein
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Real Name: Jeremy Bernstein
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Re: Designing an analysis friendly Stockfish?

Post by Jeremy Bernstein » Sat Feb 05, 2011 5:29 pm

Here's a game:

[Event "SF RR"]
[Site "JEREMYBERNS2F5A"]
[Date "2011.02.05"]
[Round "19"]
[White "Stockfish_PA_J_GTB_64"]
[Black "Stockfish_64"]
[Result "1/2-1/2"]
[BlackElo "2200"]
[ECO "B92"]
[Opening "Sicilian"]
[Time "17:18:50"]
[Variation "Najdorf, 6.Be2 e5 7.Nb3 Be7 8.O-O O-O 9.Be3 Be6 10.Nd5"]
[WhiteElo "2200"]
[TimeControl "60+1"]
[Termination "normal"]
[PlyCount "209"]
[WhiteType "program"]
[BlackType "program"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8.
Be2 Be7 9. Qd3 Nbd7 10. Nd5 {(Nc3-d5 Be6xd5 e4xd5 O-O O-O b7-b5 a2-a4 b5-b4
Be3-d2 Nd7-b6 Bd2xb4 e5-e4 Qd3-d4 Nb6xd5 Bb4-a5 Qd8-b8 Ba5-d2 Rf8-c8)
+0.28/17 3} O-O 11. O-O Bxd5 12. exd5 Qc7 13. Rfd1 h6 14. Rac1 a5 {(a6-a5
c2-c4 b7-b6 Qd3-b1 Rf8-b8 Nb3-d2 Nd7-c5 Nd2-f1 h6-h5 h2-h3 Rb8-b7 Nf1-d2
Rb7-b8 Nd2-b3 a5-a4 Nb3xc5 b6xc5 Qb1-c2 e5-e4) -0.56/18 3} 15. c4 {(c2-c4
Rf8-c8 Qd3-b1 b7-b6 Rd1-e1 Ra8-b8 Qb1-f5 Nd7-c5 Nb3xc5 b6xc5 Rc1-b1 Rb8-b7
Be2-d3 Rc8-b8 b2-b3 a5-a4 b3xa4 Rb7-b4 Rb1xb4 Rb8xb4 Be3-d2 Rb4xa4)
+0.60/18 3} b6 {(b7-b6 Qd3-f5 Nd7-c5 Nb3xc5 b6xc5 Be3-d2 Rf8-b8 Rc1-b1
Qc7-d7 Qf5-c2 a5-a4 Rd1-e1 Qd7-c8 Be2-f3 a4-a3 b2-b3 Qc8-d7 Re1-f1 Nf6-g4
Rb1-e1) -0.64/19 4} 16. Qb1 {(Qd3-b1 Rf8-b8 Nb3-d2 Nd7-c5 Nd2-f1 Qc7-d7
h2-h3 Nc5-e4 f2-f3 Ne4-c5 Nf1-g3 Ra8-a7 Ng3-f5 Ra7-c7 Qb1-c2 Nf6-h5 Rd1-e1)
+0.64/17 3} Rfb8 {(Rf8-b8 Qb1-c2 Rb8-c8 Qc2-f5 a5-a4 Nb3-d2 Nd7-c5 Nd2-b1
Qc7-d7 Qf5xd7 Nf6xd7 Nb1-c3 f7-f5 Nc3-b5 Nd7-f6 f2-f3 Kg8-f7 Be3-d2 g7-g5)
-0.56/18 3} 17. Nd2 {(Nb3-d2 Nd7-c5 Nd2-f1 Qc7-d7 h2-h3 Nf6-e4 f2-f3 Ne4-f6
Nf1-g3 Nf6-h7 f3-f4 e5xf4 Be3xf4 Be7-g5 Be2-g4 Qd7-c7 Bf4xg5 h6xg5 Rd1-e1
Nh7-f6 Bg4-f3 Rb8-e8 Ng3-f5 Qc7-d7) +0.52/18 3} Nc5 {(Nd7-c5 Nd2-f1 Nf6-h7
Rc1-c3 Qc7-d7 Nf1-g3 Be7-g5 Be3xg5 h6xg5 a2-a3 a5-a4 Qb1-f5 Qd7-e7 Qf5-h3
g7-g6 Qh3-h6 Qe7-f8 Qh6xf8+ Nh7xf8 Be2-g4) -0.56/19 3} 18. Nf1 {(Nd2-f1
Qc7-d7 Nf1-g3 Nf6-g4 Be2xg4 Qd7xg4 Ng3-f5 Be7-f8 h2-h3 Qg4-h5 Rd1-e1 Ra8-a7
Rc1-c3 Qh5-g6 Be3xc5 b6xc5 Rc3-g3 Qg6-f6 Qb1-c2 g7-g6) +0.52/20 3} Qd7
{(Qc7-d7 Nf1-g3 Nf6-g4 Be2xg4 Qd7xg4 Ng3-f5 Be7-f8 b2-b3 Qg4-g6 Rd1-e1
Qg6-f6 f2-f3 g7-g6 Nf5-g3 Qf6-h4 Be3-f2 Qh4-d8 Rc1-d1 Bf8-e7 Bf2-e3 Be7-g5
Ng3-e4 Bg5xe3+ Re1xe3 Nc5xe4 Qb1xe4) -0.44/18 3} 19. Ng3 {(Nf1-g3 Nf6-g4
Be2xg4 Qd7xg4 Ng3-f5 Be7-f8 f2-f3 Qg4-h5 Nf5-g3 Qh5-g6 Qb1-c2 Bf8-e7 Ng3-f5
Kg8-f8 b2-b3 Rb8-b7 Rd1-e1 Kf8-g8 Be3xc5 b6xc5 Nf5xe7+ Rb7xe7 Qc2xg6 f7xg6)
+0.44/19 2} Ng4 {(Nf6-g4 Be2xg4 Qd7xg4 Ng3-f5 Be7-f8 Qb1-c2 Qg4-g6 b2-b3
Ra8-a7 Rd1-e1 Qg6-h7 Be3xc5 b6xc5 Re1-e3 g7-g6 Re3-g3 Kg8-h8 Nf5-e3 Kh8-g8
Qc2-d2) -0.60/20 3} 20. Bxg4 {(Be2xg4 Qd7xg4 Ng3-f5 Be7-f8 Rd1-f1 Rb8-b7
b2-b3 Qg4-g6 Rf1-e1 Ra8-e8 f2-f3 Qg6-h7 a2-a3 g7-g6 b3-b4 g6xf5 b4xc5 d6xc5
Qb1-b5 Re8-d8) +0.52/19 3} Qxg4 {(Qd7xg4 Ng3-f5 Be7-f8 b2-b3 Qg4-g6 Rd1-e1
Qg6-g4 Qb1-c2 Qg4-g6 a2-a3 Rb8-b7 Rc1-a1 Bf8-e7 b3-b4 a5xb4 a3xb4) -0.60/15
0} 21. Nf5 {(Ng3-f5 Be7-f8 b2-b3 Rb8-b7 f2-f3 Qg4-g6 a2-a3 Nc5xb3 Nf5xh6+
g7xh6 Qb1xb3 Bf8-e7 Qb3-b1 Qg6xb1 Rc1xb1 Ra8-c8 Rb1xb6 Rb7xb6 Be3xb6 Rc8xc4
Bb6xa5) +0.52/18 2} Bf8 {(Be7-f8 Qb1-c2 Qg4-g6 b2-b3 Qg6-f6 Nf5-g3 Qf6-g6
f2-f3 Qg6-f6 Rd1-e1 Ra8-a7 Ng3-e4 Qf6-h4 Be3-f2 Qh4-f4 Rc1-d1) -0.52/17 3}
22. Qc2 {(Qb1-c2 Rb8-b7 b2-b3 Qg4-g6 Rd1-e1 Ra8-c8 f2-f3 Rb7-b8 g2-g3
Nc5-a6 Be3-d2 b6-b5 Bd2xa5 b5xc4 b3xc4 Na6-b4 Ba5xb4 Rb8xb4 g3-g4 Qg6-g5)
+0.40/17 4} Qg6 {(Qg4-g6 b2-b3 Qg6-h7 Rd1-e1 g7-g6 Nf5-g3 f7-f5 Ng3-e2
Bf8-e7 Ne2-c3 e5-e4 Be3xc5 b6xc5 Nc3-b5 Rb8-b7 Re1-e3 Be7-g5 Nb5xd6 Bg5xe3
f2xe3) -0.40/18 3} 23. b3 {(b2-b3 Qg6-h7 Rd1-e1 g7-g6 Nf5-g3 f7-f5 Ng3-e2
Bf8-e7 Ne2-c3 Kg8-g7 Nc3-b5 Rb8-b7 f2-f4 e5-e4 Be3-d4+ Kg7-g8 Re1-e3
Ra8-c8) +0.48/17 3} Qh7 {(Qg6-h7 Rd1-e1 g7-g6 Nf5-g3 f7-f5 Ng3-e2 Bf8-g7
f2-f3 g6-g5 Be3xc5 b6xc5 Ne2-c3 Bg7-f6 Nc3-b5 Qh7-d7 a2-a3 Kg8-g7 Rc1-d1
g5-g4) -0.48/19 3} 24. Rb1 {(Rc1-b1 g7-g6 Nf5-g3 f7-f5 Ng3-e2 f5-f4 Be3xc5
b6xc5 Ne2-c3 Qh7-f7 Nc3-b5 Kg8-g7 Rd1-d3 Rb8-b7 Rd3-c3 Bf8-e7 Rb1-e1 Qf7-f5
Qc2xf5 g6xf5 g2-g3 f4xg3 Rc3xg3+ Kg7-f7) +0.28/18 3} g6 {(g7-g6 Nf5-g3
f7-f5 Ng3-e2 Qh7-d7 Ne2-c3 Kg8-g7 Nc3-b5 Bf8-e7 Rd1-e1 f5-f4 Be3xc5 b6xc5
Rb1-d1 Kg7-h7 Rd1-d2 Kh7-g7 Re1-b1 Kg7-h7 Rd2-d1 Kh7-g7 Rd1-d2) -0.12/17 3}
25. Ng3 {(Nf5-g3 f7-f5 Ng3-e2 f5-f4 Be3xc5 b6xc5 Ne2-c3 Qh7-f7 Nc3-b5
Kg8-g7 Rd1-d3 Rb8-b7 Rd3-c3 Bf8-e7 Rb1-e1 Qf7-f5 Qc2-d1 Qf5-c8 Rc3-c1 a5-a4
b3xa4 Qc8-f5) +0.16/19 3} f5 {(f7-f5 Ng3-e2 Qh7-d7 f2-f3 Kg8-g7 Rb1-c1
Qd7-f7 Ne2-c3 Bf8-e7 Nc3-b5 Rb8-c8 Be3-f2 Kg7-h7 Rd1-e1 Kh7-g7 Bf2-e3
Ra8-b8 Rc1-b1) -0.20/17 2} 26. Ne2 {(Ng3-e2 f5-f4 Be3xc5 b6xc5 Ne2-c3
Qh7-f7 Nc3-b5 Kg8-g7 Rd1-d3 Qf7-d7 Rd3-h3 Bf8-e7 Rb1-e1 Be7-f6 Rh3-f3
Bf6-e7 Rf3-c3 Rb8-f8 Rc3-h3 Qd7-f5 Qc2xf5 Rf8xf5) +0.16/20 4} Qd7 {(Qh7-d7
f2-f3 Kg8-g7 Rb1-c1 Bf8-e7 Ne2-c3 Be7-h4 Nc3-b5 f5-f4 Be3-d2 Rb8-c8 Bd2-e1
Bh4xe1 Rd1xe1 Qd7-e7 Rc1-d1 Qe7-d7 a2-a3 Qd7-e7 b3-b4) -0.16/19 3} 27. a3
{(a2-a3 Bf8-g7 f2-f3 e5-e4 Be3xc5 e4xf3 Bc5-f2 f3xe2 Qc2xe2 Bg7-e5 Qe2-d2
Qd7-g7 Bf2-e3 Kg8-h7 Be3-f4 Be5xf4 Qd2xf4 Qg7-c7 Qf4-e3 Rb8-e8) +0.16/17 3}
Kg7 {(Kg8-g7 f2-f3 Bf8-e7 Ne2-c3 Rb8-c8 Be3-f2 f5-f4 Rb1-b2 Qd7-f5 Qc2xf5
g6xf5 Bf2xc5 b6xc5 Kg1-f2 Rc8-g8 g2-g3 Kg7-f7 Rb2-e2 f4xg3+ h2xg3 Be7-f6
Rd1-h1) -0.16/19 3} 28. f3 {(f2-f3 f5-f4 Be3-f2 Bf8-e7 Ne2-c3 Qd7-f5 Qc2xf5
g6xf5 Nc3-b5 Rb8-c8 Rd1-c1 Rc8-g8 Bf2xc5 b6xc5 Kg1-f2 Kg7-f7 g2-g3 f4xg3+
h2xg3 Ra8-b8) +0.16/17 3} f4 {(f5-f4 Be3-f2 Qd7-f7 Ne2-c3 Rb8-c8 Nc3-b5
Nc5-d7 Qc2-e4 Bf8-e7 Rd1-e1 Qf7-f6 Qe4-c2 Nd7-c5 Re1-e2 Nc5-d7 Rb1-e1 a5-a4
b3-b4 Qf6-f5 Qc2-c3 Qf5-f7 Re1-d1 Qf7-f5 Qc3-c1) -0.28/20 7} 29. Bf2
{(Be3-f2 Bf8-e7 Ne2-c3 Rb8-c8 Nc3-b5 Qd7-f5 Qc2-e2 Qf5-f7 b3-b4 Nc5-d7
Rb1-a1 Qf7-f6 Rd1-c1 Qf6-g5 Nb5-c3 Qg5-h5 Nc3-e4 Ra8-a7 Rc1-d1 a5xb4 a3xb4)
+0.24/20 3} Qf7 {(Qd7-f7 Ne2-c3 Nc5-d7 Nc3-b5 Rb8-c8 Rd1-c1 Bf8-e7 Qc2-e2
Nd7-c5 Rc1-e1 h6-h5 Bf2xc5 b6xc5 Qe2-c2 Qf7-f5 Qc2xf5 g6xf5 Kg1-f2 a5-a4
b3xa4 Ra8xa4) -0.28/19 2} 30. Nc3 {(Ne2-c3 Bf8-e7 Nc3-b5 Rb8-c8 Rd1-e1
Nc5-d7 Rb1-d1 Qf7-f6 Re1-e2 Qf6-f7 Qc2-c3 Qf7-f6 Qc3-c1 Qf6-f7 Rd1-d2
Nd7-c5 Bf2xc5 b6xc5 Qc1-c2 Qf7-f5 Qc2xf5 g6xf5) +0.24/20 2} Qb7 {(Qf7-b7
b3-b4 a5xb4 a3xb4 Nc5-d7 Rb1-a1 Bf8-e7 Qc2-d3 Ra8xa1 Rd1xa1 Rb8-a8 Ra1xa8
Qb7xa8 Qd3-b1 Qa8-c8 Qb1-a2 Kg7-f7 Nc3-b5 Qc8-b7 g2-g3 Qb7-c8 g3xf4 e5xf4
Bf2-d4) -0.40/18 5} 31. b4 {(b3-b4 a5xb4 a3xb4 Nc5-d7 c4-c5 d6xc5 Nc3-b5
Bf8-e7 b4xc5 Be7xc5 d5-d6 Bc5xf2+ Qc2xf2 Ra8-a5 Nb5-c7 g6-g5 Qf2-c2 b6-b5
Rd1-d5 g5-g4 Rd5xb5 Ra5xb5 Rb1xb5 Qb7-a7+ Qc2-f2 Qa7xf2+ Kg1xf2 Rb8xb5
Nc7xb5 g4xf3 g2xf3) +0.60/18 2} axb4 {(a5xb4 a3xb4 Nc5-d7 Nc3-b5 Nd7-f6
Rb1-a1 Rb8-c8 g2-g3 Nf6-h5 Qc2-d3 Bf8-e7 Kg1-g2 Nh5-f6 Rd1-e1 g6-g5 Kg2-g1
f4xg3 h2xg3 g5-g4 Ra1xa8 Rc8xa8) -0.52/19 4} 32. axb4 {(a3xb4 Nc5-d7 c4-c5
d6xc5 b4xc5 Bf8xc5 Bf2xc5 Nd7xc5 d5-d6 Qb7-f7 Nc3-d5 Nc5-d7 Nd5-e7 Ra8-a7
Qc2-c6 Rb8-a8 Ne7-d5 Ra7-a2 Nd5-c3 Ra2-a5 Rd1-c1 Ra8-a6 Nc3-e4 Ra5-a2)
+0.44/19 3} Nd7 {(Nc5-d7 g2-g3 Qb7-a6 Nc3-b5 Qa6-a2 Rb1-b2 Qa2-a4 g3xf4
Qa4xc2 Rb2xc2 e5xf4 Kg1-g2 Ra8-a4 Bf2-d4+ Kg7-f7 Rd1-e1 Ra4xb4 Re1-e6
Rb4-a4 Nb5xd6+ Bf8xd6 Re6xd6) -0.76/17 2} 33. Nb5 {(Nc3-b5 Bf8-e7 g2-g3
Rb8-f8 Kg1-g2 f4xg3 h2xg3 Nd7-f6 Qc2-d3 Ra8-a2 Nb5-c3) +0.60/20 7} Nf6
{(Nd7-f6 Qc2-e2 Qb7-d7 Rb1-a1 Qd7-b7 Rd1-e1 Rb8-c8 Re1-b1 Rc8-b8 Rb1-d1
Rb8-e8 Bf2-h4 Bf8-e7 Rd1-e1 Re8-c8 Qe2-d3 g6-g5 Bh4-f2) -0.60/18 2} 34. g3
{(g2-g3 Nf6-h5 Rb1-a1 Bf8-e7 Kg1-g2 Rb8-c8 Qc2-e2 Rc8-f8 g3-g4 Nh5-f6 h2-h3
Rf8-c8 Qe2-d3 Nf6-d7 Rd1-e1 Rc8-g8) +0.60/16 2} Nh5 {(Nf6-h5 Kg1-g2 Qb7-d7
Rb1-a1 Qd7-b7 g3-g4 Nh5-f6 h2-h3 Bf8-e7 Rd1-e1 Rb8-c8 Qc2-d3 g6-g5 Re1-d1
Rc8-f8 Rd1-b1 Rf8-c8 Rb1-d1) -0.56/16 2} 35. Kg2 {(Kg1-g2 Rb8-c8 c4-c5
d6xc5 d5-d6 Qb7-d7 b4xc5 b6xc5 Qc2-e2 Nh5-f6 Qe2xe5 f4xg3 h2xg3 Ra8-b8
Nb5-c7 Rb8xb1 Nc7-e6+ Kg7-f7 Ne6xf8) +0.72/17 2} Kh7 {(Kg7-h7 g3-g4 Nh5-f6
h2-h4 Kh7-g7 Qc2-e2 Rb8-d8 Rb1-c1 Ra8-a4 g4-g5 h6xg5 h4xg5 Nf6-h7 Nb5-c3
Ra4-a8 Nc3-e4 Bf8-e7 Bf2-h4 Rd8-h8) -0.76/16 3} 36. Qe2 {(Qc2-e2 Qb7-d7
Rb1-a1 Qd7-b7 g3-g4 Nh5-f6 Ra1xa8 Rb8xa8 h2-h4 Kh7-g7 g4-g5 h6xg5 h4xg5
Nf6-h7 c4-c5 b6xc5 b4xc5 Nh7xg5 Nb5xd6) +0.72/15 2} Qe7 {(Qb7-e7 g3-g4
Nh5-f6 Rb1-a1 Qe7-b7 h2-h4 Kh7-g7 g4-g5 h6xg5 h4xg5 Nf6-h7 Ra1xa8 Rb8xa8
c4-c5 b6xc5 b4xc5 Qb7-a6 Rd1-e1 Nh7xg5 Nb5xd6 Bf8xd6 Qe2xa6 Ra8xa6 c5xd6
Ra6xd6 Re1xe5) -0.96/16 2} 37. Ra1 {(Rb1-a1 Qe7-b7 Qe2-b2 Qb7-e7 Qb2-c2
f4xg3 h2xg3 Qe7-g5 Ra1xa8 Rb8xa8 Nb5-c7 Ra8-a3 Nc7-e6 Nh5-f4+ Ne6xf4 e5xf4
g3-g4 h6-h5) +0.80/16 2} Qb7 {(Qe7-b7 g3-g4 Nh5-f6 h2-h4 Kh7-g7 Rd1-e1
Rb8-d8 Qe2-c2 Rd8-c8 Ra1xa8 Rc8xa8 Re1-h1 h6-h5 g4-g5 Nf6-d7 Rh1-c1 Bf8-e7
Qc2-d3) -0.72/17 2} 38. Qb2 {(Qe2-b2 Qb7-e7 Qb2-c2 Qe7-b7 g3-g4 Nh5-f6
h2-h4 Kh7-g7 Rd1-g1 Bf8-e7 g4-g5 h6xg5 h4xg5 Nf6-h7 Ra1xa8 Rb8xa8 Bf2-h4
Qb7-c8 Kg2-f2 Nh7-f8) +1.01/18 3} Be7 {(Bf8-e7 Qb2-c2 Kh7-g7 Qc2-e2 Kg7-h7
Ra1xa8 Qb7xa8 g3-g4 Nh5-f6 Qe2-b2 Rb8-b7 h2-h3 Qa8-c8 Qb2-c3 Kh7-g7 Rd1-a1
Rb7-b8 Qc3-d3 g6-g5) -0.84/16 2} 39. Rxa8 {(Ra1xa8 Rb8xa8 Rd1-a1 f4xg3
h2xg3 Nh5-f6 Ra1xa8 Qb7xa8 Qb2-e2 Qa8-b8 f3-f4 Be7-f8 f4xe5 d6xe5 Qe2-e3
Kh7-g7 Qe3xb6 Qb8xb6 Bf2xb6 Bf8xb4 Kg2-f3 Kg7-f7 Bb6-c7 e5-e4+ Kf3-e3
Kf7-e7 Bc7-b6 Nf6-d7) +1.21/18 2} Rxa8 {(Rb8xa8 Rd1-a1 f4xg3 h2xg3 Nh5-f6
Ra1xa8 Qb7xa8 Bf2xb6 Qa8-b7 Bb6-f2 Nf6xd5 Qb2-d2 Nd5-b6 Qd2-d3 d6-d5 Bf2xb6
Qb7xb6 Qd3xd5 Be7xb4 Qd5xe5 Qb6-c5 Qe5xc5 Bb4xc5) -1.29/18 1} 40. Ra1
{(Rd1-a1 f4xg3 h2xg3 Nh5-f6 Ra1xa8 Qb7xa8 Qb2-e2 Nf6-d7 f3-f4 Qa8-d8 Qe2-g4
Kh7-g7 f4-f5 Nd7-f8 f5xg6 Nf8xg6 Bf2-e3 Qd8-a8 Qg4-e2 Qa8-a6 Qe2-c2 Qa6-b7)
+1.25/20 1} fxg3 {(f4xg3 h2xg3 Nh5-f6 Ra1xa8 Qb7xa8 Bf2xb6 Qa8-b7 Bb6-f2
Nf6xd5 Qb2-d2 Nd5-b6 Bf2xb6 Qb7xb6 Qd2-d5 Be7-f8 Qd5-f7+ Bf8-g7 Qf7-a7
Qb6-c6 Qa7-c7 Qc6xc7 Nb5xc7 Kh7-g8 Nc7-b5 Bg7-f8 Kg2-f2) -1.53/19 2} 41.
hxg3 {(h2xg3 Nh5-f6 Ra1-a2 Ra8-a6 Qb2-a1 Ra6xa2 Qa1xa2 Nf6-d7 Bf2-e3 Kh7-g7
Qa2-a4 g6-g5 Nb5-c3 Qb7-c8 Nc3-e4 g5-g4 Qa4-c6 g4xf3+ Kg2-f2) +1.33/20 1}
Nf6 {(Nh5-f6 Ra1xa8 Qb7xa8 Bf2xb6 Qa8-b7 Bb6-f2 Nf6xd5 Qb2-d2 Nd5-b6 Bf2xb6
Qb7xb6 Qd2-f2 Qb6xf2+ Kg2xf2 Kh7-g8 Nb5-c7 Be7-d8 Nc7-d5 Kg8-f7 b4-b5
Kf7-e6 Kf2-e3 Ke6-d7 Ke3-e4 Bd8-g5 g3-g4 Kd7-c8 b5-b6) -1.61/20 2} 42. Rxa8
{(Ra1xa8 Qb7xa8 Bf2xb6 Qa8-b7 Bb6-f2 Nf6xd5 Qb2-d2 Nd5-b6 Nb5xd6 Be7xd6
Qd2xd6 Nb6xc4 Qd6-f8 h6-h5 Qf8-c5 Nc4-b2 b4-b5 e5-e4 Qc5-c6 e4xf3+ Kg2xf3
Qb7-f7+ Kf3-e2 Qf7-f5 Qc6-c7+ Kh7-g8 Qc7-b8+ Kg8-f7 Qb8-f4 Qf5xf4 g3xf4)
+1.29/18 2} Qxa8 {(Qb7xa8 Bf2xb6 Qa8-b7 Bb6-f2 Nf6xd5 Qb2-d2 Nd5-b6 Bf2xb6
Qb7xb6 Qd2-f2 Qb6xf2+ Kg2xf2 Kh7-g8 Kf2-e3 Kg8-f7 Nb5-c7 Be7-d8 Nc7-d5
Kf7-e6 b4-b5 Ke6-d7 Ke3-d3 Bd8-a5 Kd3-e4) -1.61/14 0} 43. Bxb6 {(Bf2xb6
Qa8-b7 Bb6-f2 Nf6xd5 Qb2-d2 Nd5-b6 Qd2-e2 d6-d5 Bf2xb6 Qb7xb6 Qe2xe5 Be7xb4
Qe5xd5 Bb4-f8 Qd5-d7+ Bf8-g7 Qd7-d3 Qb6-c6 Qd3-e4 Qc6-c5 f3-f4 Bg7-b2
Kg2-f3) +1.45/19 1} Qb7 {(Qa8-b7 Bb6-f2 Nf6xd5 Qb2-d2 Nd5-b6 Bf2xb6 Qb7xb6
Qd2-f2 Qb6xf2+ Kg2xf2 Kh7-g7 Nb5-c7 Kg7-f7 b4-b5 Be7-d8 Nc7-d5 Kf7-e6
Kf2-e3 Ke6-d7 f3-f4 e5xf4+ Ke3xf4 Bd8-g5+ Kf4-e4 h6-h5 Ke4-d4) -1.53/20 1}
44. Bf2 {(Bb6-f2 Nf6xd5 Qb2-d2 Nd5-b6 Qd2-e2 Nb6-d7 Qe2-d3 h6-h5 Nb5-c3
Kh7-g7 b4-b5 Nd7-f6 Bf2-e3 Qb7-a8 b5-b6 Qa8-b7 Nc3-d5 Be7-f8 Nd5xf6 Kg7xf6
Qd3-e4 Qb7xe4 f3xe4) +1.65/19 1} Nxd5 {(Nf6xd5 Qb2-d2 Nd5-b6 Nb5xd6 Be7xd6
Qd2xd6 Nb6xc4 Qd6-c5 Nc4-d2 Qc5-c3 Qb7-d5 b4-b5 e5-e4 b5-b6 e4xf3+ Kg2-g1
Nd2-c4 b6-b7 Qd5xb7 Qc3xc4 Qb7-b1+ Qc4-f1 Qb1-b3 Qf1-e1 Qb3-d5 Bf2-e3
Kh7-g7 Qe1-c3+ Kg7-f7 Kg1-f2 h6-h5) -2.26/19 1} 45. Qd2 {(Qb2-d2 Nd5-b6
Qd2-e2 Nb6-c8 c4-c5 Qb7-d7 Nb5xd6 Nc8xd6 c5xd6 Qd7xd6 b4-b5 Kh7-g7 b5-b6
Qd6-d5 Qe2-a6 Be7-d6 Qa6-a7+ Kg7-f6 b6-b7 e5-e4 Qa7-d4+ Kf6-e6 Qd4xe4+
Qd5xe4 f3xe4 Bd6-b8 Bf2-e3 g6-g5 Kg2-f3 Ke6-d7) +1.61/19 2} Nb6 {(Nd5-b6
Nb5xd6 Be7xd6 Qd2xd6 Nb6xc4 Qd6-c5 Nc4-d2 Qc5-c3 Qb7-d5 b4-b5 e5-e4 b5-b6
e4xf3+ Kg2-g1 Nd2-c4 b6-b7 Qd5xb7 Qc3xc4 Qb7-b1+ Kg1-h2 Qb1-b7 Qc4-d3
Qb7-c6 Qd3-e3 g6-g5 Qe3-d3+ Kh7-g7 Bf2-d4+ Kg7-f7 Kh2-g1 Qc6-d5 Kg1-f2
Qd5-a2+ Kf2-e3) -2.06/20 1} 46. Nxd6 {(Nb5xd6 Be7xd6 Qd2xd6 Nb6xc4 Qd6-c5
Nc4-d2 Qc5-c3 Qb7-d5 b4-b5 e5-e4 b5-b6 e4xf3+ Kg2-g1 Nd2-c4 b6-b7 Qd5xb7
Qc3xc4 Qb7-b1+ Kg1-h2 Qb1-b7 Qc4-d3 Qb7-c6 Qd3-d2 Qc6-e6 Qd2-d1 Qe6-f5
Qd1-d6 Qf5-f7 Kh2-g1 Kh7-g7 Qd6-e5+ Kg7-h7) +2.06/20 2} Bxd6 {(Be7xd6
Qd2xd6 Nb6xc4 Qd6-c5 Nc4-d2 Qc5-c3 Qb7-d5 b4-b5 e5-e4 b5-b6 e4xf3+ Kg2-g1
Nd2-c4 b6-b7 Qd5xb7 Qc3xc4 Qb7-b1+ Kg1-h2 Qb1-b7 Qc4-d3 Qb7-c6 Qd3-e3 h6-h5
Kh2-g1 Qc6-d5 Bf2-e1 g6-g5 Kg1-f2 h5-h4) -2.34/20 1} 47. Qxd6 {(Qd2xd6
Nb6xc4 Qd6-c5 Nc4-d2 Qc5-c3 Qb7-d5 b4-b5 g6-g5 b5-b6 g5-g4 Qc3-c7+ Kh7-g6
b6-b7 Qd5xf3+ Kg2-g1 Qf3-d1+ Kg1-h2 Nd2-f1+ Kh2-g2 Nf1-e3+ Bf2xe3 Qd1-f3+
Kg2-h2 Qf3-e2+) +1.73/19 2} Nxc4 {(Nb6xc4 Qd6-c5 Nc4-d2 Qc5-c3 Qb7-d5 b4-b5
g6-g5 g3-g4 e5-e4 b5-b6 e4xf3+ Kg2-h2 Qd5-d6+ Kh2-g1 Nd2-e4 Qc3xf3 Ne4xf2
Qf3-f7+ Kh7-h8 Qf7xf2 Qd6-b4 Qf2-f6+ Kh8-g8 Qf6-g6+ Kg8-f8 Qg6xh6+ Kf8-e8
Qh6-e6+ Ke8-d8 Qe6-d5+ Kd8-e8 Qd5-c6+ Ke8-e7 Qc6-c7+ Ke7-e6 b6-b7 Qb4-b1+
Kg1-g2) -1.93/17 1} 48. Qc5 {(Qd6-c5 Nc4-d2 Qc5-c3 Qb7-d5 b4-b5 e5-e4 b5-b6
e4xf3+ Kg2-g1 Nd2-c4 b6-b7 Qd5xb7 Qc3xc4 Qb7-b1+ Kg1-h2 Qb1-b7 Qc4-d3
Qb7-c6 Kh2-g1 Qc6-c1+ Qd3-f1 Qc1-c3 Qf1-e1 Qc3xe1+ Bf2xe1 g6-g5 g3-g4
Kh7-g6 Kg1-f2 h6-h5) +2.06/19 0} Nd2 {(Nc4-d2 Qc5-c3 Qb7-d5 b4-b5 e5-e4
b5-b6 e4xf3+ Kg2-g1 Nd2-c4 b6-b7 Qd5xb7 Qc3xc4 Qb7-b1+ Kg1-h2 Qb1-b7 Qc4-d3
Qb7-c6 Qd3-d4 Qc6-b7 Qd4-f6 Qb7-b3 Qf6-e7+ Kh7-g8 Qe7-e8+ Kg8-h7 Qe8-d7+
Kh7-g8) -2.14/17 1} 49. Qc3 {(Qc5-c3 Qb7-d5 b4-b5 g6-g5 b5-b6 g5-g4 b6-b7
g4xf3+ Kg2-g1 Qd5xb7 Qc3xd2 Qb7-b1+ Bf2-e1 Qb1-b6+ Qd2-f2 Qb6-c6 Qf2-e3
e5-e4 Be1-d2 Kh7-g7 Kg1-f2 Kg7-f7 Qe3xh6 Qc6xh6 Bd2xh6 Kf7-e6 Bh6-d2)
+2.14/20 1} Qd5 {(Qb7-d5 b4-b5 g6-g5 Qc3-c7+ Kh7-g8 Qc7-c6 Qd5-d3 Qc6-e6+
Kg8-h7 Qe6-f7+ Kh7-h8 Qf7-f8+ Kh8-h7 g3-g4 e5-e4 Qf8-f5+ Kh7-g7 f3xe4
Qd3xe4+ Qf5xe4 Nd2xe4 b5-b6 Ne4-d6 Bf2-g3 Nd6-b7 Kg2-f3 Kg7-f7 Kf3-e4
Kf7-e6) -1.89/18 1} 50. b5 {(b4-b5 g6-g5 Qc3-c7+ Kh7-g8 Qc7-c6 Qd5-d3
Qc6-e6+ Kg8-h7 Qe6-f7+ Kh7-h8 g3-g4 e5-e4 Qf7-f6+ Kh8-h7 Qf6-f5+ Kh7-g7
f3xe4 Qd3xe4+ Qf5xe4 Nd2xe4 b5-b6 Ne4-d6 Bf2-g3 Nd6-b7 Bg3-e5+ Kg7-f7
Kg2-f3 Nb7-c5 Kf3-e3 Kf7-e6 Be5-g7 Ke6-d5 Bg7xh6) +2.02/19 1} g5 {(g6-g5
Qc3-c7+ Kh7-g8 Qc7-c6 Qd5-d3 Qc6-e6+ Kg8-h7 Qe6-f7+ Kh7-h8 Qf7-f8+ Kh8-h7
g3-g4 e5-e4 Qf8-f5+ Kh7-g7 f3xe4 Qd3xe4+ Qf5xe4 Nd2xe4 b5-b6 Ne4-d6 Bf2-g3
Nd6-b7 Kg2-f3 Kg7-f7 Bg3-e5 Kf7-e6 Be5-g7 Ke6-d5 Bg7xh6) -1.89/18 1} 51.
Qc7+ {(Qc3-c7+ Kh7-g8 Qc7-c6 Qd5-d3 Qc6-e6+ Kg8-h7 Qe6-f7+ Kh7-h8 g3-g4
e5-e4 Qf7-f6+ Kh8-h7 Qf6-f5+ Kh7-g7 f3xe4 Qd3xe4+ Qf5xe4 Nd2xe4 b5-b6
Ne4-d6 Bf2-g3 Nd6-b7 Bg3-e5+ Kg7-f7 Kg2-f3 Nb7-c5 Kf3-e3 Kf7-e6 Be5-g7
Ke6-d5 Bg7xh6 Kd5-c6 Bh6xg5 Kc6xb6 Bg5-e7) +2.02/18 1} Kg8 {(Kh7-g8 Qc7-c6
Qd5-d3 Qc6-e8+ Kg8-h7 Qe8-f7+ Kh7-h8 g3-g4 e5-e4 Qf7-f8+ Kh8-h7 Qf8-f5+
Kh7-g7 f3xe4 Qd3xe4+ Qf5xe4 Nd2xe4 b5-b6 Ne4-d6 Bf2-g3 Nd6-b7 Bg3-e5+
Kg7-f7 Kg2-f3 Nb7-a5 Kf3-e4 Kf7-e6 Be5-d4 Na5-b7 Bd4-g7 Nb7-d6+ Ke4-d4
h6-h5) -2.06/20 1} 52. Qc6 {(Qc7-c6 Qd5-d3 Qc6-e6+ Kg8-h7 Qe6-f7+ Kh7-h8
Qf7-f8+ Kh8-h7 g3-g4 e5-e4 Qf8-f5+ Kh7-g7 f3xe4 Qd3xe4+ Qf5xe4 Nd2xe4 b5-b6
Ne4-d6 Bf2-g3 Nd6-b7 Bg3-e5+ Kg7-f7 Kg2-f3 Nb7-c5 Kf3-e3 Kf7-e6 Be5-g7
Ke6-d5 Bg7xh6 Kd5-c6 Bh6xg5 Kc6xb6 Bg5-e7) +2.06/19 0} Qd3 {(Qd5-d3 Qc6-e8+
Kg8-h7 Qe8-f7+ Kh7-h8 Qf7-f8+ Kh8-h7 g3-g4 e5-e4 Qf8-f5+ Kh7-g7 f3xe4
Qd3xe4+ Qf5xe4 Nd2xe4 b5-b6 Ne4-d6 Bf2-g3 Nd6-b7 Bg3-e5+ Kg7-f8 Kg2-g3
Kf8-g8 Kg3-f3 Kg8-f7 Kf3-e4 Kf7-e6 Be5-g7 Nb7-d6+ Ke4-d3 Ke6-d5 Bg7xh6)
-2.06/20 1} 53. Qe6+ {(Qc6-e6+ Kg8-h7 Qe6-f7+ Kh7-h8 g3-g4 e5-e4 Qf7-f6+
Kh8-h7 Qf6-f5+ Kh7-g7 f3xe4 Qd3xe4+ Qf5xe4 Nd2xe4 b5-b6 Ne4-d6 Bf2-g3
Nd6-b7 Bg3-e5+ Kg7-f7 Kg2-f3 Nb7-c5 Kf3-e3 Kf7-e6 Be5-g7 Ke6-d5 Bg7-f8
Nc5-b7 Bf8xh6) +1.97/18 1} Kh7 {(Kg8-h7 Qe6-f7+ Kh7-h8 Qf7-f8+ Kh8-h7 g3-g4
e5-e4 Qf8-f7+ Kh7-h8 Qf7-f6+ Kh8-h7 b5-b6 e4xf3+ Kg2-h2 Qd3-e2 Qf6-d4
Nd2-b3 Qd4-d7+ Kh7-g6 Qd7-d6+ Kg6-g7 Kh2-g1 Nb3-d2 Bf2-d4+ Kg7-f7 Qd6-d7+
Qe2-e7 Qd7xe7+ Kf7xe7 b6-b7 f3-f2+ Kg1xf2) -2.50/18 1} 54. Qf7+ {(Qe6-f7+
Kh7-h8 Qf7-f8+ Kh8-h7 g3-g4 e5-e4 b5-b6 e4xf3+ Kg2-h2 Qd3-e2 Qf8-f5+ Kh7-g7
Qf5-d7+ Kg7-g6 Qd7-d6+ Kg6-h7 Qd6-d4 Nd2-b3 Qd4-d7+ Kh7-g6 Qd7-c6+ Kg6-g7
Qc6-c3+ Kg7-g6 Kh2-g3 Qe2-b5 Qc3-c7 Nb3-a5 Kg3xf3 Qb5-d5+ Kf3-e3) +2.18/14
0} Kh8 {(Kh7-h8 Qf7-f6+ Kh8-g8 g3-g4 Qd3-f1+ Kg2-g3 Qf1-d3 Qf6-e6+ Kg8-h7
Qe6-f5+ Qd3xf5 g4xf5 Nd2-c4 Bf2-c5 Kh7-g7) -2.14/6 0} 55. Qf8+ {(Qf7-f8+
Kh8-h7 g3-g4 Qd3-f1+ Kg2-g3 Qf1-e2 Qf8-a3 Nd2-f1+ Kg3-g2 Nf1-d2 Qa3-e7+
Kh7-g6 Qe7-f8 Qe2-f1+ Kg2-g3 Qf1-e2 Qf8-a3 Nd2-f1+ Kg3-g2 Nf1-d2 b5-b6
e5-e4 Qa3-d6+ Kg6-g7 Qd6-e5+ Kg7-g8 Qe5-d5+ Kg8-g7 Qd5-d7+ Kg7-g6 Qd7-f5+)
+2.30/17 0} Kh7 {(Kh8-h7 g3-g4 e5-e4 Qf8-f7+ Kh7-h8 Qf7-f6+ Kh8-h7 Qf6-f5+
Kh7-g7 f3xe4 Qd3xe4+ Qf5xe4 Nd2xe4 b5-b6 Ne4-d6 Bf2-g3 Nd6-b7 Bg3-e5+)
-1.53/6 0} 56. g4 {(g3-g4 Qd3-f1+ Kg2-g3 Qf1-e2 Qf8-f7+ Kh7-h8 Qf7-e8+
Kh8-g7 Qe8-d7+ Kg7-g8 Qd7-c8+ Kg8-f7 Qc8-c6 Nd2-f1+ Kg3-h3 Qe2xf2) +2.30/19
0} Qf1+ {(Qd3-f1+ Kg2-g3 Qf1-e2 Qf8-a3 Nd2-f1+ Kg3-g2 Qe2xb5 Qa3-e7+ Kh7-g6
Qe7-d6+ Kg6-f7 Qd6-d1 e5-e4 f3xe4 Qb5-c4 Bf2-g1 Qc4xe4+ Kg2xf1 Kf7-g6
Qd1-d6+ Kg6-f7 Qd6-d7+ Kf7-g6 Kf1-f2 Qe4-f4+ Kf2-e2 Qf4-c4+ Ke2-d2 Qc4-b4+
Kd2-e2 Qb4-c4+) -2.98/18 1} 57. Kg3 {(Kg2-g3 Qf1-e2 Qf8-f7+ Kh7-h8 Qf7-e8+
Kh8-g7 Qe8-d7+ Kg7-g6 Qd7-c6+ Kg6-f7 Qc6-c3 Nd2-f1+ Kg3-g2 Nf1-d2 Qc3-c7+
Kf7-g6 Qc7-d6+ Kg6-g7 Qd6-d7+ Kg7-h8 Qd7-e8+ Kh8-g7 Qe8-d7+) +2.26/20 0}
Qe2 {(Qf1-e2 Qf8-a3 Nd2-f1+ Kg3-g2 Nf1-d2 b5-b6 e5-e4 Qa3-e7+ Kh7-g8
Qe7-e6+ Kg8-g7 Qe6-e5+ Kg7-g8 Qe5-e6+) -2.86/19 1} 58. Qa3 {(Qf8-a3 Nd2-f1+
Kg3-g2 Nf1-d2 Qa3-e7+ Kh7-g6 Qe7-d6+ Kg6-h7 Qd6-d7+ Kh7-h8 Qd7-f5 Qe2-f1+
Kg2-g3 Qf1-e2 Qf5-c8+ Kh8-g7 Qc8-c3 Nd2xf3 Qc3-c7+ Kg7-f6 Qc7-c6+ Kf6-g7
Qc6-b7+ Kg7-g8 Qb7xf3 Qe2xb5 Qf3-e4 Kg8-g7 Bf2-e3 Kg7-f6 Qe4-f5+ Kf6-g7
Qf5-e6) +2.58/19 1} Nf1+ {(Nd2-f1+ Kg3-g2 Nf1-d2 Qa3-e7+ Kh7-g8 Qe7-e6+
Kg8-g7 Qe6-d7+ Kg7-h8 Qd7-f5 Qe2-f1+ Kg2-g3 Qf1-e2 Qf5-c8+ Kh8-h7 Qc8-c2+
Kh7-g7 Qc2-c3 Nd2-f1+ Kg3-g2 Qe2xb5 Qc3-e1 Kg7-g6 Qe1xf1 Qb5xf1+ Kg2xf1
h6-h5 Bf2-e3 h5xg4 f3xg4 Kg6-f6 Kf1-e2) -3.03/17 1} 59. Kg2 {(Kg3-g2 Nf1-d2
Qa3-e7+ Kh7-g6 Qe7-d6+ Kg6-h7 Qd6-d7+ Kh7-h8 Qd7-f5 e5-e4 Qf5-f8+ Kh8-h7
Qf8-f7+ Kh7-h8 Qf7-e8+ Kh8-h7 Qe8-e7+ Kh7-h8 Qe7-f8+) +2.58/19 0} Nd2
{(Nf1-d2 Qa3-e7+ Kh7-g6 Qe7-e8+ Kg6-g7 Qe8-d7+ Kg7-h8 Qd7-f5 e5-e4 Qf5-f8+
Kh8-h7 Qf8-f7+ Kh7-h8 Qf7-f6+ Kh8-h7 Qf6-f7+) -2.90/19 1} 60. Qe7+
{(Qa3-e7+ Kh7-g6 Qe7-f8 Qe2-f1+ Kg2-g3 Qf1-e2 Qf8-d6+ Kg6-f7 Qd6-c7+
Kf7-g8) +2.42/18 1} Kg6 {(Kh7-g6 Qe7-e6+ Kg6-g7 Qe6-d7+ Kg7-h8 Qd7-f5 e5-e4
f3xe4 Nd2xe4 Qf5-f8+ Kh8-h7 Qf8-f7+ Kh7-h8 Qf7-f3 Qe2xf3+ Kg2xf3 Ne4-d6
b5-b6 Kh8-g7 Bf2-c5 Nd6-b7 Bc5-a3 Kg7-f7 Kf3-e4 Kf7-e6 Ba3-f8 Nb7-d6+
Ke4-d4) -2.06/17 1} 61. Qd6+ {(Qe7-d6+ Kg6-g7 Qd6-d7+ Kg7-h8 Qd7-f5 e5-e4
f3xe4 Nd2xe4 Qf5-f8+ Kh8-h7 Qf8-f3 Qe2-c2 Qf3-f7+ Kh7-h8 b5-b6 Ne4xf2
Qf7xf2 Qc2-c6+ Kg2-g1 Qc6-c1+ Kg1-h2 Kh8-g8 Kh2-g3 Qc1-c3+ Qf2-f3 Qc3-e5+
Kg3-f2 Kg8-g7) +1.89/14 0} Kg7 {(Kg6-g7 Qd6-d7+ Kg7-h8 Qd7-f5 e5-e4 f3xe4
Nd2xe4 Qf5-f8+ Kh8-h7 Qf8-f7+ Kh7-h8 Qf7-f3 Qe2xf3+ Kg2xf3 Ne4-d6 b5-b6
Kh8-g7 Bf2-c5 Nd6-b7 Bc5-b4 Kg7-f7 Kf3-e4 Kf7-e6 Bb4-f8 Nb7-a5 Ke4-d3
Ke6-e5 Bf8xh6 Ke5-f4 Kd3-d4 Na5-b7 Kd4-d5 Kf4xg4) -2.66/19 1} 62. Qd7+
{(Qd6-d7+ Kg7-h8 Qd7-f5 e5-e4 f3xe4 Nd2xe4 Qf5-f8+ Kh8-h7 Qf8-f7+ Kh7-h8
Qf7-f3 Qe2-c4 b5-b6 Qc4-b4 Qf3-f5 Kh8-g7 Qf5-d7+ Kg7-g6 b6-b7 Ne4-f6 Qd7-c8
Qb4-e4+ Kg2-f1 Qe4-b1+ Kf1-e2 Qb1-b2+ Ke2-f3 Qb2-b3+ Bf2-e3 Qb3-d1+ Kf3-g3
Nf6-e4+) +2.50/17 0} Kh8 {(Kg7-h8 Qd7-f5 e5-e4 f3xe4 Nd2xe4 Qf5-f8+ Kh8-h7
Qf8-f7+ Kh7-h8 Qf7-f3 Qe2-c2 Qf3-f8+ Kh8-h7 b5-b6 Qc2-c6 Qf8-f7+ Kh7-h8
Bf2-e3 Ne4-f6+ Kg2-g3 Qc6-d6+ Kg3-h3 Qd6-c6 Qf7-f8+ Kh8-h7 Kh3-g3 Nf6-e4+
Kg3-f3 Ne4-d6+ Kf3-e2 Qc6-c2+) -2.22/16 0} 63. Qf5 {(Qd7-f5 e5-e4 f3xe4
Nd2xe4 Qf5-f8+ Kh8-h7 Qf8-f7+ Kh7-h8 Qf7-f3 Qe2-c4 b5-b6 Qc4-b4 Qf3-f5
Kh8-g7 Qf5-d7+ Kg7-g6 b6-b7 Ne4-f6 Qd7-f5+ Kg6-g7 Qf5-f3 Qb4-b2 Kg2-g3
Nf6-d7) +2.50/18 1} e4 {(e5-e4 f3xe4 Nd2xe4 Qf5-f8+ Kh8-h7 Qf8-f7+ Kh7-h8
Qf7-f3 Qe2xf3+ Kg2xf3 Ne4-d6 b5-b6 Kh8-g7 Bf2-g3 Nd6-b7 Kf3-e4 Kg7-f6
Ke4-d5 Kf6-e7 Kd5-c6 Nb7-d8+ Kc6-c7 Nd8-e6+ Kc7-c8 Ne6-c5 Bg3-f2 Nc5-e4
b6-b7 Ne4-d6+ Kc8-c7 Nd6xb7 Kc7xb7 Ke7-d6 Bf2-d4) -3.07/17 0} 64. fxe4
{(f3xe4 Nd2xe4 Qf5-f3 Qe2-c4 Qf3-f8+ Kh8-h7 Qf8-f5+ Kh7-g8 Qf5-g6+ Kg8-f8
Qg6xh6+ Kf8-f7 Qh6-h7+ Kf7-e8 Qh7-g6+ Ke8-e7 b5-b6 Ne4xf2 Qg6xg5+ Ke7-d7
Qg5-f5+ Kd7-d8 Qf5-f8+ Kd8-d7 Qf8-g7+ Kd7-c8 Kg2xf2 Qc4-c5+ Kf2-f3 Qc5xb6)
+2.10/15 0} Nxe4 {(Nd2xe4 Qf5-f3 Qe2-c4 b5-b6 Qc4-d5 Qf3-f5 Qd5xf5 g4xf5
Ne4-d6 Bf2-c5 Nd6-b7 Bc5-f8 h6-h5 Kg2-g3 Kh8-g8 Bf8-h6 g5-g4 Kg3-h4 Kg8-f7
Bh6-g5 Nb7-d6 Kh4xh5 g4-g3 Kh5-g4 g3-g2 Bg5-e3) -2.34/17 0} 65. Qf3
{(Qf5-f3 Qe2-c4 Qf3-f8+ Kh8-h7 Qf8-e7+ Kh7-g6 Qe7-e8+ Kg6-g7 Qe8-d7+ Kg7-g6
b5-b6 Ne4-f6 Qd7-f5+ Kg6-g7 b6-b7 Qc4-b4 Qf5-f3 Qb4-b2 Kg2-g3 Qb2-e5+
Kg3-h3 h6-h5 Qf3-g3 h5xg4+ Kh3-h2 Qe5xg3+ Bf2xg3 Nf6-d7 Kh2-g2) +2.62/16 1}
Qc4 {(Qe2-c4 b5-b6 Qc4-d5 Bf2-e1 Kh8-g8 Kg2-h3 Qd5-b7 Be1-b4 Ne4-c5 Qf3xb7
Nc5xb7 Kh3-g3 Kg8-g7 Kg3-f3 Kg7-f7 Kf3-e4 Nb7-d8 Ke4-d4 Kf7-e6 Kd4-e4
Ke6-d7) -2.26/16 0} 66. Qf8+ {(Qf3-f8+ Kh8-h7 Qf8-e7+ Kh7-g6 Qe7-e8+ Kg6-g7
Qe8-d7+ Kg7-g8 b5-b6 Qc4-e2 Qd7-c8+ Kg8-g7 Qc8-f5 Ne4xf2 Qf5xf2 Qe2xg4+
Qf2-g3 Qg4-e4+ Kg2-f2 Kg7-g6) +2.30/16 1} Kh7 {(Kh8-h7 b5-b6 Qc4-d5 Qf8-f5+
Qd5xf5 g4xf5 Ne4-d6 Kg2-f3 h6-h5 Bf2-c5 Nd6-b7 Bc5-e3 g5-g4+ Kf3-f4 Kh7-g7
Be3-f2 Kg7-h6 Bf2-h4 Nb7-d6 Bh4-e7 Nd6-b7 Be7-f6 Kh6-h7 Bf6-h4 Kh7-h6
Bh4-f2 Nb7-d6 Bf2-c5 Nd6-b7 Bc5-d4 Nb7-d6 Bd4-e5 Nd6-b7 Be5-f6) -2.90/19 1}
67. Qf5+ {(Qf8-f5+ Kh7-g8 Qf5-g6+ Kg8-f8 Qg6xh6+ Kf8-f7 Qh6-c6 Qc4xc6 b5xc6
Kf7-e7 Kg2-f3 Ne4-d2+ Kf3-e2 Nd2-c4 c6-c7 Ke7-d7) +2.14/13 0} Kg8 {(Kh7-g8
Qf5-g6+ Kg8-f8 Qg6xh6+ Kf8-f7 Qh6-h7+ Kf7-e8 Qh7-g6+ Ke8-d8 Qg6-f5 Ne4xf2
Qf5xg5+ Kd8-c7 Kg2xf2 Qc4-c2+ Kf2-g3 Qc2-c3+ Kg3-h2 Qc3-c2+ Kh2-h3 Qc2-c3+
Kh3-h4 Qc3-e1+ Kh4-h5 Qe1-e8+ Qg5-g6 Qe8xb5+ g4-g5 Qb5-e2+ Kh5-h6 Qe2-g4
Qg6-d3) -1.77/16 1} 68. Qg6+ {(Qf5-g6+ Kg8-f8 Qg6xh6+ Kf8-e7 Qh6-g7+ Ke7-e8
Qg7-d4 Qc4-e2 Qd4-h8+ Ke8-f7 Qh8-h7+ Kf7-f8 Qh7-h6+ Kf8-f7 Qh6-h7+)
+1.85/13 1} Kf8 {(Kg8-f8 Qg6xh6+ Kf8-f7 Qh6-h7+ Kf7-e8 Qh7-g6+ Ke8-d8
Qg6-b6+ Kd8-c8 Qb6-a6+ Kc8-d7 Qa6-b7+ Kd7-e6 Qb7-b6+ Ke6-f7 Qb6-a7+ Kf7-e6
Qa7-h7 Ke6-d6 Qh7-g6+ Kd6-e7 Qg6-g7+ Ke7-e8 Qg7-e5+ Ke8-d7 Qe5-d4+ Qc4xd4
Bf2xd4 Ne4-d6 b5-b6 Kd7-c6 Kg2-f3) -1.85/18 1} 69. Qxh6+ {(Qg6xh6+ Kf8-f7
Qh6-h7+ Kf7-e8 Qh7-g6+ Ke8-d7 Qg6-g7+ Kd7-c8 Qg7-h8+ Kc8-b7 Qh8-h7+ Kb7-b8
Qh7-a7+ Kb8-c8 Qa7-a8+ Kc8-d7 Qa8-b7+ Kd7-e6 Qb7-b6+ Ne4-d6 Qb6-e3+ Ke6-d7
Qe3xg5 Nd6xb5 Qg5-f5+ Kd7-d6 Bf2-g3+ Kd6-e7 g4-g5) +1.77/13 0} Kf7 {(Kf8-f7
Qh6-h7+ Kf7-e8 Qh7-g6+ Ke8-d8 Qg6-b6+ Kd8-c8 Qb6-a6+ Kc8-d8 Qa6-a8+ Kd8-e7
Qa8-a7+ Ke7-e6 Qa7-h7 Ke6-d6 Qh7-g6+ Kd6-e7 Qg6-g7+ Ke7-d6 Qg7-d4+ Qc4xd4
Bf2xd4 Kd6-d5 Bd4-e3 Ne4-d6 b5-b6 Kd5-c6 Be3xg5 Kc6xb6 Bg5-f4) -1.85/18 1}
70. Qh7+ {(Qh6-h7+ Kf7-e8 Qh7-g6+ Ke8-d7 Qg6-g7+ Kd7-e8 Qg7-e5+ Ke8-d7
Qe5-d4+ Qc4xd4 Bf2xd4 Ne4-d6 b5-b6 Kd7-c6 Kg2-f3 Nd6-f7 Kf3-f2 Nf7-h6
Kf2-g3 Nh6-f7 Kg3-f3 Nf7-h6) +1.77/15 1} Ke8 {(Kf7-e8 Qh7-g6+ Ke8-d8
Qg6-b6+ Kd8-c8 Qb6-a6+ Kc8-d7 Qa6-b7+ Kd7-e6 Qb7-b6+ Ke6-f7 Qb6-a7+ Kf7-e6
Qa7-e3 Ke6-d7 Qe3-d4+ Qc4xd4 Bf2xd4 Ne4-d6 b5-b6 Kd7-c6 Kg2-f3 Kc6-b7
Kf3-e3 Kb7-c6 Ke3-d3 Nd6-c8 Bd4-e3) -1.89/17 0} 71. Qg6+ {(Qh7-g6+ Ke8-d7
Qg6-g7+ Kd7-e8 Qg7-e5+ Ke8-d7 Qe5-d4+ Qc4xd4 Bf2xd4 Ne4-d6 b5-b6 Kd7-c6
Kg2-f3 Nd6-f7 Kf3-f2 Nf7-h6 Kf2-g3 Nh6-f7 Bd4-e3 Nf7-e5 Be3-d4) +1.69/14 0}
Kd8 {(Ke8-d8 Qg6-b6+ Kd8-c8 Qb6-a6+ Kc8-d8 Qa6-a5+ Kd8-c8 Qa5-a8+ Kc8-d7
Qa8-a7+ Kd7-c8 Qa7-d4 Qc4-e6 Qd4-h8+ Kc8-c7 Qh8-h7+ Kc7-d8 Qh7-f5 Qe6xf5
g4xf5 Ne4-d6) -1.57/17 1} 72. Qf5 {(Qg6-f5 Qc4-e2 Qf5-f3 Qe2-c4 Bf2-e3
Kd8-e7 b5-b6 Qc4-c2+ Kg2-h3 Qc2-b1 Be3-c1 Qb1-b4 Kh3-g2) +1.97/12 0} Nxf2
{(Ne4xf2 Kg2xf2 Qc4-d4+ Kf2-f3 Kd8-c7 Qf5-f7+ Kc7-d8 Qf7-g8+ Kd8-c7 Qg8xg5
Qd4-d1+ Kf3-e4 Qd1-b1+ Ke4-d4 Qb1-b2+ Kd4-d3 Qb2-b3+ Kd3-e2 Qb3-c4+ Ke2-d2
Qc4-d4+ Kd2-c1 Qd4-c3+ Kc1-d1 Qc3-d3+ Qg5-d2 Qd3xb5 Qd2-f4+ Kc7-d7 g4-g5
Qb5-d3+ Kd1-e1 Kd7-e6 Ke1-f2) -1.29/13 1} 73. Qxg5+ {(Qf5xg5+ Kd8-d7
Qg5-f5+ Kd7-e7 Kg2xf2 Qc4-d4+ Kf2-g3 Qd4-c3+ Kg3-h4 Qc3-d4 Kh4-h5 Qd4-h8+
Kh5-g5 Qh8-d4 Kg5-h4 Qd4-h8+ Kh4-g5) +2.62/11 1} Kc7 {(Kd8-c7 Qg5-g7+
Kc7-b6 Qg7-g6+ Kb6-a5 Kg2xf2 Qc4-c5+ Kf2-g2 Qc5-d5+ Kg2-g3 Qd5-e5+ Kg3-h3
Qe5-e3+ Kh3-h4 Qe3-e1+ Kh4-h5 Qe1-h1+ Kh5-g5 Qh1-c1+ Kg5-f6 Qc1-c3+ Kf6-e6
Qc3-c4+ Ke6-d6 Qc4-d4+ Kd6-e7 Qd4-a7+ Ke7-f6 Qa7-d4+ Kf6-f7 Qd4-d7+ Kf7-f8
Qd7xb5 Qg6-f5) -1.37/14 0} 74. Kxf2 {(Kg2xf2 Qc4-d4+ Kf2-f3 Qd4-d1+ Kf3-e4
Qd1-e2+ Ke4-f5 Qe2-d3+ Kf5-e6 Qd3-d7+ Ke6-e5 Qd7-d6+ Ke5-e4 Qd6-b4+ Ke4-f3
Qb4-b3+ Qg5-e3 Qb3-d5+ Kf3-f4 Qd5-c4+ Kf4-g3 Kc7-b7 Qe3-f4) +2.98/11 0}
Qc2+ {(Qc4-c2+ Kf2-f3 Qc2-d3+ Qg5-e3 Qd3xb5 Qe3-e7+ Kc7-b6 g4-g5 Qb5-f5+
Kf3-e3 Kb6-b5 Ke3-d4 Qf5-f4+ Kd4-d5 Qf4-c4+ Kd5-e5 Qc4-e2+ Ke5-f6 Qe2-f2+
Kf6-g6 Qf2-f3 Qe7-d7+ Kb5-b4 Kg6-g7 Qf3-c3+ Kg7-f7 Qc3-c4+ Kf7-f6) -2.30/13
1} 75. Kf3 {(Kf2-f3 Qc2-d1+ Kf3-e4 Qd1-e2+ Ke4-f5 Qe2-d3+ Kf5-e6 Qd3-d7+
Ke6-e5 Qd7-d6+ Ke5-e4 Qd6-b4+ Ke4-f3 Qb4-b3+ Qg5-e3 Qb3-d5+ Kf3-f4 Qd5-c4+
Kf4-g3 Kc7-b7 Qe3-f4) +3.31/13 1} Qd3+ {(Qc2-d3+ Qg5-e3 Qd3xb5 Qe3-e7+
Kc7-b6 g4-g5 Qb5-f5+ Kf3-e3 Kb6-b5 Ke3-d4 Qf5-f4+ Kd4-d5 Qf4-c4+ Kd5-e5
Qc4-e2+ Ke5-f6 Qe2-f3+ Kf6-g7 Qf3-c3+ Qe7-f6 Qc3-c7+ Kg7-g6 Qc7-g3 Qf6-e6
Kb5-c5 Kg6-f6) -2.46/16 0} 76. Qe3 {(Qg5-e3 Qd3-d5+ Kf3-f4 Kc7-d7 g4-g5
Qd5-c4+ Kf4-g3 Qc4-c7+ Qe3-f4 Qc7-a5 Kg3-g4 Qa5-a2 Qf4-f5+ Kd7-d6 Qf5-f6+
Kd6-d7 Qf6-c6+ Kd7-d8 Qc6-d6+ Kd8-e8) +4.28/12 0} Qxb5 {(Qd3xb5 Qe3-e7+
Kc7-b6 g4-g5 Qb5-f5+ Kf3-e3 Kb6-b5 Ke3-d4 Qf5-f4+ Kd4-d5 Qf4-c4+ Kd5-e5
Qc4-c3+ Ke5-f4 Qc3-d4+ Qe7-e4 Qd4-f2+ Kf4-e5 Qf2-g3+ Ke5-f5 Qg3-f2+ Kf5-e6
Qf2-b6+ Ke6-e7 Qb6-c7+ Ke7-f6 Qc7-d8+ Qe4-e7 Qd8-h8+ Kf6-g6 Qh8-h1 Kg6-g7
Qh1-a1+ Kg7-f7 Qa1-f1+ Qe7-f6 Qf1-c4+ Kf7-g6 Kb5-b4 Kg6-h6 Qc4-h4+ Kh6-g7)
-2.46/16 0} 77. Qe7+ {(Qe3-e7+ Kc7-c8) +M53/100 1} Kb6 {(Kc7-b6 Qe7-e6+
Kb6-c7 Kf3-f4 Qb5-f1+ Kf4-e5 Qf1-g1 Ke5-f6 Qg1-f2+ Kf6-g7 Qf2-d4+ Kg7-g6
Qd4-d3+ Kg6-f6 Qd3-f1+ Kf6-g7 Qf1-a1+ Qe6-f6 Qa1-a4 Qf6-e7+ Kc7-c8 g4-g5
Qa4-d4+ Kg7-g6 Qd4-d2 Kg6-f6 Qd2-f2+ Kf6-g7 Qf2-d4+) -2.78/15 0} 78. Qe6+
{(Qe7-e6+ Kb6-b7 Qe6-e4+ Kb7-a6) +M52/100 1} Kc7 {(Kb6-c7 Kf3-f4 Qb5-f1+
Kf4-e5 Qf1-g1 Ke5-f6 Qg1-f2+ Kf6-g7 Qf2-d4+ Kg7-g6 Qd4-d3+ Kg6-f6 Qd3-f1+
Kf6-g7 Qf1-h3 Qe6-e5+ Kc7-c6 g4-g5 Kc6-d7 g5-g6 Qh3-g4 Kg7-f6 Qg4-h4+
Kf6-f5 Qh4-f2+ Kf5-g5 Qf2-g2+ Kg5-f6) -3.03/15 0} 79. Kf4 {(Kf3-f4)
+1.73/100 1} Qf1+ {(Qb5-f1+ Kf4-e5 Qf1-e1+ Ke5-f6 Qe1-f2+ Kf6-g7 Qf2-d4+
Kg7-f7 Qd4-f4+ Kf7-g6 Qf4-h2 g4-g5 Qh2-h4 Kg6-f6 Qh4-f4+ Qe6-f5 Qf4-h4
Kf6-f7 Qh4-c4+ Kf7-f8 Qc4-b4+ Kf8-g7 Qb4-b2+ Qf5-f6 Qb2-e2 Kg7-f7 Qe2-c4+
Kf7-f8 Qc4-g4 g5-g6 Kc7-d7 g6-g7) -3.23/16 0} 80. Kg5 {(Kf4-g5 Qf1-b5+
Kg5-f6) +M49/6 0} Kb8 {(Kc7-b8 Qe6-e5+ Kb8-b7 Kg5-g6 Qf1-d3+ Qe5-f5 Qd3-e3
Kg6-f7 Kb7-c7 g4-g5 Kc7-d6 Qf5-f6+ Kd6-d7 g5-g6 Qe3-e8+ Kf7-g7 Qe8-e4
Qf6-f7+ Kd7-d6 Kg7-g8 Qe4-c2 Qf7-f6+ Kd6-d5 g6-g7 Qc2-g2 Qf6-f5+ Kd5-d6
Kg8-f7) -3.27/16 0} 81. Qe5+ {(Qe6-e5+ Kb8-a7) +M47/6 0} Kb7 {(Kb8-b7
Kg5-g6 Qf1-d3+ Kg6-f7 Qd3-c4+ Qe5-e6 Qc4-f4+ Kf7-g6 Qf4-g3 g4-g5 Kb7-b8
Qe6-e7 Qg3-d3+ Kg6-g7 Qd3-d4+ Qe7-f6 Qd4-d7+ Qf6-f7 Qd7-d4+ Kg7-g8 Qd4-e4
g5-g6 Kb8-c8 g6-g7 Kc8-d8 Qf7-f1 Qe4-h4 Kg8-f7) -3.87/16 1} 82. Kg6
{(Kg5-g6 Qf1-d3+ Kg6-f6) +M46/6 0} Qd3+ {(Qf1-d3+ Kg6-f7 Qd3-c4+ Qe5-e6
Qc4-f1+ Kf7-g8 Qf1-g2 Qe6-e7+ Kb7-c6 g4-g5 Kc6-b5 Qe7-e8+ Kb5-a5 g5-g6
Qg2-d5+ Kg8-h7 Qd5-h5+ Kh7-g7 Qh5-f3 Qe8-f7 Qf3-e4 Kg7-f8 Qe4-a8+ Kf8-e7
Qa8-e4+ Ke7-d7 Qe4-d3+ Kd7-e8 Ka5-b4) -3.95/15 0} 83. Qf5 {(Qe5-f5) +M45/6
0} Qg3 {(Qd3-g3 g4-g5 Kb7-c6 Kg6-f6 Qg3-h4 Kf6-f7 Qh4-g3 g5-g6 Qg3-c7+
Kf7-g8 Qc7-d8+ Kg8-g7 Qd8-e7+ Qf5-f7 Qe7-e4 Kg7-g8 Kc6-b6 Qf7-f6+ Kb6-c7
g6-g7 Kc7-d7 Qf6-f7+ Kd7-d6 Qf7-f6+ Kd6-d7) -4.00/16 2} 84. g5 {(g4-g5)
+2.22/6 0} Kc7 {(Kb7-b6 Kg6-g7 Qg3-e1 Kg7-f7 Qe1-g3 Kf7-g7) -4.00/16 0} 85.
Kf6 {(Kg6-f6) +M39/6 0} Qh4 {(Qg3-h4 Kf6-f7 Qh4-h5+ Kf7-g7 Qh5-h2 g5-g6
Kc7-d8 Qf5-e6 Qh2-g3 Kg7-g8 Qg3-h2 Qe6-f6+ Kd8-d7 Qf6-f5+ Kd7-e7 g6-g7
Ke7-e8 Qf5-e4+ Ke8-d7 Kg8-f7 Qh2-f2+ Kf7-g6 Qf2-g1+ Kg6-h5 Qg1-c5+ Kh5-h6
Qc5-d6+ Kh6-h7 Qd6-h2+ Kh7-g6 Qh2-g1+) -4.24/16 0} 86. Ke6 {(Kf6-e6) +M38/6
0} Qc4+ {(Qh4-c4+ Qf5-d5 Qc4-g4+ Ke6-f7 Qg4-f4+ Kf7-g7 Kc7-b6 g5-g6 Kb6-a6
Kg7-h7 Qf4-h2+ Kh7-g8 Qh2-b8+ Kg8-f7 Qb8-c7+ Kf7-f6 Qc7-c3+ Kf6-e7 Qc3-c7+
Qd5-d7 Qc7-c3 Qd7-e6+ Ka6-b7 Ke7-f8 Qc3-g3 g6-g7) -4.72/15 0} 87. Qd5
{(Qf5-d5 Qc4-g4+ Ke6-f6) +M37/6 0} Qa6+ {(Qc4-a6+ Ke6-e7 Qa6-a1 Qd5-c4+
Kc7-b6 g5-g6 Qa1-a3+ Ke7-d7 Qa3-b2 Qc4-c7+ Kb6-a6 Qc7-d6+ Ka6-b7 Qd6-d5+
Kb7-b6 Kd7-e7 Qb2-a1 Qd5-e6+ Kb6-b5 Ke7-f7 Qa1-f1+ Kf7-g8 Qf1-f3 g6-g7
Kb5-c5 Qe6-e7+ Kc5-c6 Qe7-e8+ Kc6-b6 Qe8-b8+ Kb6-a5 Qb8-f8 Qf3-e4 Qf8-c5+
Ka5-a4 Kg8-f7) -5.09/16 1} 88. Kf5 {(Ke6-f5) +2.82/6 0} Qc8+ {(Qa6-c8+
Qd5-e6 Qc8-f8+ Qe6-f6 Qf8-c8+ Kf5-f4 Qc8-h3 g5-g6 Qh3-f1+ Kf4-g5 Qf1-g2+
Kg5-f5 Qg2-h3+ Kf5-e4 Qh3-g2+ Ke4-e5 Qg2-e2+ Ke5-f5 Qe2-f1+ Kf5-e6 Qf1-c4+
Ke6-e7 Qc4-c5+ Ke7-f7 Qc5-d5+ Qf6-e6 Qd5-h5 Qe6-e7+ Kc7-c6 Qe7-e4+ Kc6-d7
Kf7-f6 Qh5-h8+ g6-g7 Qh8-h6+ Qe4-g6 Qh6-h4+ Qg6-g5 Qh4-d4+ Qg5-e5 Qd4-b6+
Kf6-g5 Qb6-g1+ Kg5-h5 Qg1-h1+ Kh5-g6 Qh1-c6+ Qe5-f6 Qc6-g2+ Qf6-g5 Qg2-c6+
Kg6-h7 Qc6-e4+ Qg5-g6 Qe4-e7 Qg6-d3+) -4.12/15 1} 89. Kf6 {(Kf5-f6) +M40/6
0} Qh8+ {(Qc8-h8+ Kf6-f7 Qh8-h7+ Kf7-f8 Qh7-h8+ Qd5-g8 Qh8-h1 Qg8-f7+
Kc7-d6 Qf7-e7+ Kd6-c6 Qe7-e6+ Kc6-b5 Qe6-f5+ Kb5-a4 g5-g6 Qh1-a8+ Kf8-e7
Qa8-g2 Qf5-d7+ Ka4-a5 Qd7-d8+ Ka5-b5 Qd8-d3+ Kb5-c5 Qd3-c3+ Kc5-d5 Qc3-f6
Kd5-c4 g6-g7 Qg2-b7+ Ke7-e8 Qb7-c8+ Qf6-d8 Qc8-e6+ Ke8-f8 Qe6-f5+) -4.68/15
0} 90. Kg6 {(Kf6-g6) +2.46/6 0} Kb6 {(Kc7-b6 Qd5-e6+ Kb6-c5 Qe6-f5+ Kc5-c4
Qf5-e4+ Kc4-c3 Kg6-f7 Qh8-c8 Qe4-e5+ Kc3-c2 g5-g6 Qc8-d7+ Kf7-f6 Qd7-c6+
Kf6-f5 Qc6-f3+ Kf5-e6 Qf3-c6+ Qe5-d6 Qc6-e4+ Ke6-d7 Qe4-g4+ Qd6-e6 Qg4-d4+
Kd7-e8 Qd4-c3 Qe6-f5+ Kc2-b3 Ke8-f7 Qc3-c7+ Kf7-f8) -3.71/16 1} 91. Kf5
{(Kg6-f5 Qh8-f8+ Kf5-e4) +M51/100 1} Qh3+ {(Qh8-h3+ Kf5-f6 Qh3-h8+ Kf6-g6
Qh8-e8+ Kg6-f5 Qe8-f8+ Kf5-e4 Qf8-e8+ Qd5-e5 Qe8-g6+ Ke4-f4 Qg6-h5 Qe5-e6+
Kb6-c5 g5-g6 Qh5-h6+ Kf4-f5 Qh6-f8+ Qe6-f6 Qf8-c8+ Kf5-g5 Qc8-g8 Qf6-e5+
Kc5-b4 Qe5-d4+ Kb4-b5 g6-g7) -3.79/14 1} 92. Kf6 {(Kf5-f6 Qh3-c3+ Qd5-e5)
+M50/100 1} Qh8+ {(Qh3-h8+ Kf6-g6 Qh8-e8+ Kg6-f5 Qe8-f8+ Kf5-e4 Qf8-c8
Qd5-b3+ Kb6-a7 Qb3-a3+ Ka7-b7 Qa3-b2+ Kb7-a7 Qb2-f2+ Ka7-a8 Qf2-a2+ Ka8-b8
Qa2-b1+ Kb8-a7 g5-g6 Qc8-e6+ Ke4-d4 Qe6-d6+ Kd4-c4 Qd6-e6+ Kc4-c5 Qe6-e3+
Kc5-d6 Qe3-f4+ Kd6-e6 Qf4-e3+ Ke6-f7 Qe3-f3+ Kf7-e7 Qf3-g3 Qb1-a2+ Ka7-b6
Qa2-e6+ Kb6-c5 Ke7-f6) -3.55/13 0} 93. Kg6 {(Kf6-g6) +M49/6 0} Qe8+
{(Qh8-e8+ Kg6-f5 Qe8-f8+ Kf5-e4 Qf8-c8 Qd5-b3+ Kb6-a5 Qb3-a3+ Ka5-b6
Qa3-d6+ Kb6-b5 Qd6-d3+ Kb5-b6 g5-g6 Qc8-e6+ Ke4-f4 Qe6-f6+ Kf4-g4 Qf6-e6+
Kg4-g5 Qe6-e7+ Kg5-f5 Qe7-f8+ Kf5-g4 Qf8-f6 Qd3-e3+ Kb6-a6 Qe3-g5 Qf6-e6+
Qg5-f5 Qe6-e7 Qf5-f4) -3.67/16 1} 94. Kf5 {(Kg6-f5) +2.86/6 0} Qf8+
{(Qe8-f8+ Kf5-e4 Qf8-c8 Qd5-b3+ Kb6-a5 Qb3-a3+ Ka5-b6 Qa3-d6+ Kb6-b7
Qd6-e7+ Kb7-b8 Qe7-e5+ Kb8-b7 Qe5-b2+ Kb7-a7 Qb2-f2+ Ka7-a8 Qf2-a2+ Ka8-b8
Qa2-b1+ Kb8-a7 g5-g6 Qc8-e6+ Ke4-d4 Qe6-d6+ Kd4-e3 Qd6-g3+ Ke3-d4 Qg3-d6+)
-3.71/17 0} 95. Kg4 {(Kf5-g4) +2.66/6 0} Qc8+ {(Qf8-c8+ Kg4-f4 Qc8-f8+
Kf4-e4 Qf8-c8 Qd5-d6+ Kb6-b5 Qd6-d3+ Kb5-b6 g5-g6 Qc8-e6+ Ke4-f4 Qe6-f6+
Kf4-g4 Qf6-e6+ Kg4-g5 Qe6-e7+ Kg5-f5 Qe7-f8+ Kf5-g4 Qf8-b4+ Kg4-h5 Qb4-c5+
Kh5-h6 Qc5-e5 g6-g7 Qe5-h2+ Kh6-g5) -3.75/16 1} 96. Kf4 {(Kg4-f4 Qc8-f8+
Qd5-f5) +M48/6 0} Qf8+ {(Qc8-f8+ Kf4-e4 Qf8-c8 Qd5-d6+ Kb6-a7 Qd6-e7+
Ka7-a8 Ke4-e5 Qc8-c3+ Ke5-f5 Qc3-c8+ Qe7-e6 Qc8-c5+ Kf5-f6 Qc5-f8+ Kf6-g6
Qf8-d8 Qe6-f6 Qd8-c8 Kg6-h6 Qc8-h3+ Kh6-g7 Ka8-b8 Qf6-d8+) -3.63/15 0} 97.
Ke4 {(Kf4-e4 Qf8-e7+ Qd5-e5) +M47/6 0} Qc8 {(Qf8-c8 Qd5-d6+ Kb6-b7 Qd6-e7+
Kb7-b8 Qe7-e5+ Kb8-b7 Ke4-f4 Qc8-f8+ Kf4-g4 Qf8-c8+ Qe5-f5 Qc8-c4+ Kg4-h5
Kb7-b6 g5-g6 Qc4-d4 Qf5-e6+ Kb6-b5 Kh5-g5 Qd4-d8+ Kg5-f4 Qd8-d4+ Qe6-e4
Qd4-g1 Kf4-f5 Qg1-f2+ Kf5-g5 Qf2-d2+ Kg5-g4 Qd2-a2 g6-g7) -3.71/16 0} 98.
Qd6+ {(Qd5-d6+ Kb6-b5) +M46/6 0} Kb5 {(Kb6-b5 Qd6-d3+ Kb5-b6 g5-g6 Qc8-e6+
Ke4-f4 Qe6-f6+ Kf4-g4 Qf6-e5 Qd3-d7 Qe5-f6 Qd7-f5 Qf6-d4+ Kg4-h5 Kb6-c6
Qf5-c8+ Kc6-b6 Qc8-e6+ Kb6-b5 Kh5-g5 Qd4-d8+ Kg5-f4 Qd8-d2+ Kf4-f5 Qd2-d3+
Qe6-e4 Qd3-d7+ Kf5-f4 Qd7-d2+ Kf4-e5 Kb5-c5 Ke5-f6) -3.83/16 0} 99. g6
{(g5-g6 Qc8-g4+ Ke4-e5) +M45/6 0} Qg4+ {(Qc8-g4+ Ke4-e3 Qg4-h3+ Ke3-d4
Qh3-h4+ Kd4-d3 Qh4-h3+ Kd3-d2 Qh3-h6+ Kd2-c2 Qh6-g5 Kc2-d3 Kb5-a5 Qd6-e6
Ka5-b4 Qe6-b6+ Kb4-a4 Qb6-d4+ Ka4-b5 Qd4-d7+ Kb5-c5 g6-g7 Qg5-g3+ Kd3-e4
Qg3-h4+ Ke4-f3 Qh4-h1+ Kf3-g4 Qh1-g2+ Kg4-f4 Qg2-f2+ Kf4-g5 Qf2-e3+ Kg5-g6
Qe3-g3+ Kg6-h7 Qg3-h4+ Kh7-g8 Qh4-h6) -3.83/15 0} 100. Ke3 {(Ke4-e3) +M44/6
0} Qh3+ {(Qg4-h3+ Ke3-d4 Qh3-g4+ Kd4-c3 Qg4-g5 Qd6-d7+ Kb5-a5 Qd7-e6 Ka5-b5
Qe6-c4+ Kb5-a5 Qc4-b4+ Ka5-a6 Qb4-a4+ Ka6-b7 Qa4-d7+ Kb7-a6 g6-g7) -3.79/16
1} 101. Kd2 {(Ke3-d2 Qh3-g2+ Kd2-d3) +M43/6 0} Qg2+ {(Qh3-g2+ Kd2-c3 Qg2-h1
Qd6-b8+ Kb5-a6 Qb8-g3 Qh1-c1+ Kc3-d4 Qc1-b2+ Kd4-d5 Qb2-b5+ Kd5-e6 Qb5-e8+
Ke6-f5 Qe8-c8+ Kf5-f4 Qc8-c4+ Kf4-f5 Qc4-c8+) -3.19/15 1} 102. Kc3
{(Kd2-c3) +M42/6 0} Qh1 {(Qg2-h1 Qd6-d7+ Kb5-c5 Qd7-c7+ Kc5-b5 Qc7-c4+
Kb5-b6 Qc4-e6+ Kb6-c5 Kc3-d3 Qh1-b1+ Kd3-e2 Kc5-b5 Qe6-e5+ Kb5-c4 g6-g7
Qb1-d3+ Ke2-e1 Qd3-b1+ Ke1-f2 Qb1-b6+) -3.79/15 0} 103. Qe6 {(Qd6-e6
Qh1-a1+ Kc3-d3) +M41/6 0} Ka5 {(Kb5-a5 Kc3-d4 Qh1-a1+ Kd4-d5 Qa1-d1+ Kd5-e5
Qd1-e1+ Ke5-f5 Qe1-f2+ Kf5-g5 Qf2-g3+ Qe6-g4 Qg3-e3+ Qg4-f4 Qe3-e7+ Kg5-g4
Qe7-e2+ Kg4-f5 Qe2-c2+ Qf4-e4 Qc2-f2+ Kf5-g5 Qf2-d2+ Kg5-f6 Qd2-d8+ Qe4-e7
Qd8-b6+ Kf6-f7 Qb6-b3+ Qe7-e6 Qb3-f3+ Kf7-e8 Qf3-c3 Qe6-f5+ Ka5-b6 Ke8-f8)
-4.20/14 0} 104. Kc4 {(Kc3-c4) +4.56/6 0} Qc6+ {(Qh1-c6+ Qe6xc6) 0.00/25 0}
105. Qxc6 {(Qe6xc6) 0.00/100 1 Stalemate} 1/2-1/2

Note how the PA_J+GTB finds a forced mate around move 80 or so and then loses its way by move 99. What happened?

gaard
Posts: 127
Joined: Thu Jun 10, 2010 1:39 am
Real Name: Martin Wyngaarden
Location: Holland, Michigan

Re: Designing an analysis friendly Stockfish?

Post by gaard » Sat Feb 05, 2011 7:51 pm

fruity wrote:
Uly wrote:Thanks fruity and gaard, here's a quick comparison of Stockfish PA_G and PA_H at 1CPU in the opening position. It seemed mostly luck, but PA_H found 1...e6 much earlier and reached depth 24 much faster, PA_G caught up at depth 25 and finished one minute faster in the end, though.
Engine: Stockfish 2.0.1 PA_G (128 MB)
by Tord Romstad, Marco Costalba, Joona Kii
 15/14	 0:00 	+0.16--	1.Nf3 Nf6 2.e3 d5 3.d4 e6 4.Bd3 c5 5.O-O c4 6.Be2 Nc6 7.Nc3 Bd6 (509.807) 679
 15/09	 0:01 	+0.32++	1.e4 Nf6 2.e5 Nd5 3.Nf3 Nc6 4.d4 e6 5.Bd3 (928.123) 715
 15/09	 0:01 	+0.40++	1.e4 Nf6 2.e5 Nd5 3.Nf3 Nc6 4.d4 e6 5.Bd3 (1.152.385) 730
 15/09	 0:01 	+0.56++	1.e4 Nf6 2.e5 Nd5 3.Nf3 Nc6 4.d4 e6 5.Bd3 (1.424.940) 741
 15/16	 0:03 	+0.44 	1.e4 e5 2.Nf3 Bd6 3.Nc3 Nf6 4.Be2 Nc6 5.O-O O-O 6.d3 b6 7.d4 exd4 8.Nxd4 Bb7 (2.247.548) 749
 16/18	 0:04 	+0.24--	1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Bd3 Nf6 6.O-O Be7 7.Nc3 O-O 8.Re1 Nc6 9.Ng5 d5 (3.151.485) 746
 16/26	 0:05 	+0.32 	1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Qe2 Qe7 6.Nc3 Nxc3 7.dxc3 Qxe2+ 8.Bxe2 Nc6 9.Be3 Be7 10.O-O-O O-O 11.Kb1 Be6 12.Ng5 a6 13.Nxe6 fxe6 (4.052.349) 747
 17/26	 0:05 	+0.32 	1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Qe2 Qe7 6.Nc3 Nxc3 7.dxc3 Qxe2+ 8.Bxe2 Nc6 9.Be3 Be7 10.O-O-O O-O 11.Kb1 Be6 12.Ng5 a6 13.Nxe6 fxe6 (4.252.062) 745
 18/26	 0:06 	+0.32 	1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Qe2 Qe7 6.Nc3 Nxc3 7.dxc3 Qxe2+ 8.Bxe2 Nc6 9.Be3 Be7 10.O-O-O O-O 11.Kb1 Be6 12.Ng5 a6 13.Nxe6 fxe6 (4.601.681) 747
 19/25	 0:07 	+0.40++	1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Qe2 Qe7 6.Nc3 Nxc3 7.dxc3 Qxe2+ 8.Bxe2 Nc6 9.Be3 Be7 10.O-O-O O-O 11.Kb1 Be6 12.Ng5 a6 13.h4 (5.619.232) 750
 19/19	 0:09 	+0.48++	1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Qe7 5.Be2 Ng4 6.Qxd4 d6 7.exd6 cxd6 8.Nc3 Nc6 9.Qa4 Qe6 10.O-O (6.811.131) 754
 19/26	 0:11 	+0.32 	1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Qe7 5.Be2 Ng4 6.Qxd4 h5 7.Nc3 Nc6 8.Qf4 Ncxe5 9.O-O c6 10.Re1 d6 11.h3 Nxf3+ 12.Qxf3 Ne5 13.Qf4 Be6 (8.935.601) 753
 20/26	 0:13 	+0.32 	1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Qe7 5.Be2 Ng4 6.Qxd4 h5 7.Nc3 Nc6 8.Qf4 Ncxe5 9.O-O c6 10.Re1 d6 11.h3 Nxf3+ 12.Qxf3 Ne5 13.Qf4 Be6 (10.320.940) 752
 21/26	 0:17 	+0.32 	1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Qe7 5.Be2 Ng4 6.Qxd4 h5 7.Nc3 Nc6 8.Qf4 Ncxe5 9.O-O c6 10.Re1 d6 11.h3 Nxf3+ 12.Qxf3 Ne5 13.Qf4 Be6 (13.161.101) 750
 22/17	 0:28 	+0.40++	1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Qe7 5.Be2 Ng4 6.Qxd4 h5 7.Nc3 Nc6 8.Qd1 Nxf2 9.Kxf2 (20.919.656) 744
 22/26	 0:35 	+0.24--	1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Ne4 5.Qxd4 f5 6.exf6 Nxf6 7.Nc3 Nc6 8.Qe3+ Be7 9.Bd3 O-O 10.O-O d5 11.Qg5 d4 12.Bc4+ Kh8 13.Rd1 Nd7 (26.047.732) 742
 22/25	 0:48 	+0.44 	1.e4 e5 2.Nf3 Nc6 3.Bc4 Be7 4.Nc3 Nf6 5.O-O O-O 6.d4 exd4 7.Nxd4 Bb4 8.Bg5 Bxc3 9.bxc3 Qe7 10.Bd3 d6 11.Rb1 h6 12.Bh4 Re8 13.f3 (35.672.600) 742
 23/26	 2:12 	+0.36 	1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Nxd4 Nf6 5.Nc3 Be7 6.Be2 O-O 7.Bf4 Bd7 8.O-O Nc6 9.Qd2 Ne5 10.Rad1 Re8 11.Bg3 a6 12.f4 Nc6 13.Bf2 Nxd4 (96.852.976) 733
 24/16	 3:09 	+0.20--	1.e4 e6 2.Nf3 d5 3.e5 Ne7 4.Bb5+ Bd7 5.Bxd7+ Nxd7 6.O-O Nc6 7.d4 Be7 8.c3 O-O (138.809.221) 731
 24/28	 3:51 	+0.24 	1.e4 e6 2.Nf3 d5 3.exd5 exd5 4.d4 Nf6 5.Bb5+ c6 6.Bd3 Be7 7.O-O O-O 8.Nc3 Bd6 9.a3 Re8 10.Bg5 Bg4 11.h3 Bh5 12.g4 Bg6 13.Bxg6 hxg6 14.Re1 (168.932.447) 730
 25/31	 4:50 	+0.20 	1.e4 e6 2.Nf3 d5 3.exd5 exd5 4.d4 Nf6 5.Bb5+ c6 6.Bd3 Be7 7.O-O O-O 8.Nc3 Bd6 9.a3 Re8 10.Re1 Bg4 11.Rxe8+ Qxe8 12.Bg5 Nbd7 13.h3 Bh5 14.g4 (212.238.135) 730
best move: e2-e4 time: 5:06.000 min
Engine: Stockfish 2.0.1 PA_H (128 MB)
by Tord Romstad, Marco Costalba, Joona Kii
 16/16	 0:00 	+0.28--	1.Nf3 Nf6 2.e3 e6 3.d4 d5 4.Bd3 Be7 5.O-O Nc6 6.c4 O-O 7.cxd5 exd5 8.Nc3 Be6 (497.513) 740
 16/13	 0:01 	+0.44++	1.e4 Nc6 2.d4 Nf6 3.e5 Nd5 4.c4 Nb6 5.Nf3 d6 6.exd6 cxd6 7.Nc3 (1.211.455) 760
 16/13	 0:02 	+0.52++	1.e4 Nc6 2.d4 Nf6 3.e5 Nd5 4.c4 Nb6 5.Nf3 d6 6.exd6 cxd6 7.Nc3 (1.549.036) 768
 16/18	 0:03 	+0.44 	1.e4 e6 2.Nf3 d5 3.e5 Nd7 4.Nc3 f6 5.d4 Bb4 6.Bd3 c5 7.O-O cxd4 8.Nxd4 Bxc3 9.bxc3 Nxe5 (2.323.010) 770
 17/19	 0:04 	+0.52 	1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Nc3 Nxc3 6.dxc3 Be7 7.Bc4 c6 8.O-O d5 9.Bb3 O-O 10.Bf4 (3.581.756) 764
 18/20	 0:05 	+0.40--	1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Nc3 Nxc3 6.dxc3 Be7 7.Bc4 c6 8.O-O d5 9.Bb3 O-O 10.Bf4 Be6 (4.032.770) 763
 18/18	 0:05 	+0.28--	1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Nc3 Nxc3 6.dxc3 Be7 7.Bc4 Nc6 8.O-O O-O 9.Qd5 Be6 (4.541.806) 764
 18/24	 0:08 	+0.32 	1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Nc3 Nxc3 6.dxc3 Be7 7.Bc4 Nc6 8.O-O O-O 9.Re1 Bf5 10.Bf4 Be6 11.Bd5 Bh4 12.Qd3 Qf6 (6.262.735) 761
 19/24	 0:08 	+0.32 	1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Nc3 Nxc3 6.dxc3 Be7 7.Bc4 Nc6 8.O-O O-O 9.Re1 Bf5 10.Bf4 Be6 11.Bd5 Bh4 12.Qd3 Qf6 (6.726.012) 764
 20/24	 0:10 	+0.32 	1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Nc3 Nxc3 6.dxc3 Be7 7.Bc4 Nc6 8.O-O O-O 9.Re1 Bf5 10.Bf4 Be6 11.Bd5 Bh4 12.Qd3 Qf6 (8.026.327) 764
 21/24	 0:14 	+0.32 	1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Nc3 Nxc3 6.dxc3 Be7 7.Bc4 Nc6 8.O-O O-O 9.Re1 Bf5 10.Bf4 Be6 11.Bd5 Bh4 12.Qd3 Qf6 (10.885.253) 761
 22/24	 0:21 	+0.24--	1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Nc3 Nxc3 6.dxc3 Be7 7.Bc4 Nc6 8.O-O O-O 9.Re1 Bf5 10.Bf4 Bf6 11.Nd4 Bxd4 12.cxd4 Nb4 (16.389.829) 755
 22/19	 0:31 	+0.40++	1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.O-O O-O 8.Re1 Nc6 9.c4 Bb4 10.cxd5 (23.765.595) 751
 22/24	 1:03 	+0.20 	1.e4 e6 2.Nf3 d5 3.exd5 exd5 4.d4 Nf6 5.Bd3 Nc6 6.O-O Be7 7.Nc3 Bg4 8.Be3 O-O 9.h3 Bh5 10.Re1 Re8 11.a3 Bd6 12.Bf5 Bg6 (47.007.795) 744
 23/25	 1:17 	+0.32++	1.e4 e6 2.Nf3 d5 3.exd5 exd5 4.d4 Nf6 5.Bd3 Nc6 6.O-O Be7 7.c3 O-O 8.Bf4 Bd6 9.Bxd6 Qxd6 10.Nbd2 Re8 11.Qc2 Qf4 12.Rfe1 Bg4 13.Qb3 (57.654.660) 741
 23/22	 1:28 	+0.20 	1.e4 e6 2.Nf3 d5 3.exd5 exd5 4.d4 Nf6 5.Bd3 Bd6 6.Nc3 Nc6 7.O-O O-O 8.Bg5 Nb4 9.Nb5 Bg4 10.Re1 h6 11.Nxd6 Qxd6 (65.272.603) 739
 24/10	 1:45 	+0.28++	1.e4 e6 2.Nf3 d5 3.exd5 exd5 4.d4 Nf6 5.Bd3 Bd6 (77.754.590) 736
 24/26	 1:57 	+0.28 	1.e4 e6 2.Nf3 d5 3.exd5 exd5 4.d4 Nf6 5.Bd3 Nc6 6.O-O Be7 7.Bf4 Bg4 8.c3 O-O 9.Nbd2 Bd6 10.Bxd6 Qxd6 11.Qb3 b6 12.Rae1 Rae8 13.h3 Bh5 (86.755.475) 735
 25/20	 2:44 	+0.20--	1.e4 e6 2.Nf3 d5 3.exd5 exd5 4.d4 Nf6 5.Bd3 Nc6 6.O-O Be7 7.Bf4 O-O 8.Nc3 Bg4 9.Nb5 a6 10.Nxc7 Rc8 (120.464.810) 733
 25/18	 3:49 	+0.12--	1.e4 e6 2.Nf3 d5 3.exd5 exd5 4.Be2 Nf6 5.O-O Bd6 6.d4 O-O 7.Nc3 Re8 8.Bg5 c6 9.Be3 Qe7 (168.546.917) 733
 25/24	 6:10 	+0.20 	1.e4 e6 2.Nf3 d5 3.exd5 exd5 4.Nc3 Nf6 5.d4 Bb4 6.Bd3 Qe7+ 7.Be3 Ng4 8.Qe2 Nxe3 9.Qxe3 Nc6 10.O-O Bxc3 11.bxc3 Qxe3 12.fxe3 O-O (272.208.066) 734
best move: e2-e4 time: 6:12.578 min
The change regarding history and killer moves seems to work well only at lower depths. I'm actually running a 1000 games 20 sec. match, 6 Threads. SF default is clearly in front after 800 games. I'll test SF PA_G against SF default at longer tc tonight.
Any results with the longer time control game for this fix? These updates to history/killers are in version I. Against the default with the new ok_to_use_tt() SF I have a score of +235 -140 =156 from the perspective of the default version at g/24" :(

Jeremy Bernstein
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Re: Designing an analysis friendly Stockfish?

Post by Jeremy Bernstein » Sat Feb 05, 2011 8:33 pm

I would imagine that fast time controls would amplify any slowdown due to additional tablebase or hashing activity. In which case, all seems well. I'm running a 450 game round-robin at 5 minutes per game. I'll post about that tomorrow.
Engine                Score                                                       St                                                     St                                                     St    S-B
Stockfish_64          57,5/108 ······················································ 11=111101=1111==0001100=1110000000011100=100100010000= 010=1101001000=011101101100111111111101=1001100=101011  3002,7
Stockfish_PA_J_GTB_64 52,5/108 00=000010=0000==1110011=0001111111100011=011011101111= ······················································ 111011==100011=01000110100000=11==10110010000010110000  2886,7
Stockfish_PA_I_GTB_64 52,0/108 101=0010110111=100010010011000000000010=0110011=010100 000100==011100=10111001011111=00==01001101111101001111 ······················································  2840,0

162 of 300 games played
Level: Blitz 0:05/0,1
Hardware: Intel(R) Xeon(R) CPU  W3520 @ 2.67GHz 2659 MHz with 1,0 GB Memory
Operating system: Windows 7 Professional Professional (Build 7600) 64 bit

gaard
Posts: 127
Joined: Thu Jun 10, 2010 1:39 am
Real Name: Martin Wyngaarden
Location: Holland, Michigan

Re: Designing an analysis friendly Stockfish?

Post by gaard » Sat Feb 05, 2011 9:15 pm

Uly wrote:What time control are you using? This may be exclusive to incremental time controls (or nothing at all, but Rybka's time management specially sucks at incremental TC, so one is used to seeing patterns).

Bozo the Clown at RF suggested to make a new compile of Stockfish Default and use it for the testing, instead of JA's compile, to compare apples to apples (speed of the compile would be a non factor, clear improvements would stand as better code.)
http://dl.dropbox.com/u/11904592/stockfish_def_G_J.7z

Good idea. These are all compiled under the same conditions and are the most promising versions, IMO.

Jeremy Bernstein
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Re: Designing an analysis friendly Stockfish?

Post by Jeremy Bernstein » Sat Feb 05, 2011 10:53 pm

Engine                Score                                                                                                      St                                                                                                   St                                                                                                   St    S-B
Stockfish_PA_I_GTB_64 103,5/200 ···································································································· 000100==011100=10111001011111=00==0100110111110100111101110101010111=11101011==11111111=0=1111101111 101=0010110111=100010010011000000000010=0110011=0101000==000=0=110000011000010=1==00100101=100101010  10175,
Stockfish_PA_J_GTB_64 98,5/200  111011==100011=01000110100000=11==1011001000001011000010001010101000=00010100==00000000=1=0000010000 ···································································································· 00=000010=0000==1110011=0001111111100011=011011101111=110=111=1110111111001=00111111=1110001=1111111  9848,2
Stockfish_64          98,0/200  010=1101001000=011101101100111111111101=1001100=1010111==111=1=001111100111101=0==11011010=011010101 11=111101=1111==0001100=1110000000011100=100100010000=001=000=0001000000110=11000000=0001110=0000000 ····································································································  9958,0

300 games played / Tournament is finished
PGNs attached.
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SF SBRR.7z
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fruity
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Re: Designing an analysis friendly Stockfish?

Post by fruity » Sat Feb 05, 2011 10:58 pm

gaard wrote: Any results with the longer time control game for this fix? These updates to history/killers are in version I. Against the default with the new ok_to_use_tt() SF I have a score of +235 -140 =156 from the perspective of the default version at g/24" :(
I'm still fiddling around. According to my tests at 20'' all the versions so far are 10-15 Elo below SF default. Best result I've found so far is

(1) remove the history/killer tweak. It seems to work well only for low depths. Could be reintroduced later with tweaking for low depths only, but at the moment it doesn't help to find the best PV TT code, so leave it away for now.

(2) use template and inline for ok_to_use_TT() and the following code

Code: Select all

template <NodeType PvNode>
inline bool ok_to_use_TT(const TTEntry* tte, Depth depth, Value alpha, Value beta, int ply) {
     
    Value v = value_from_tt(tte->value(), ply);

    return
        PvNode ? tte->depth() >= depth && tte->type() == VALUE_TYPE_EXACT && v < beta && v > alpha
               : (      tte->depth() >= depth
                     || v >= Max(value_mate_in(PLY_MAX), beta)
                     || v <= Min(value_mated_in(PLY_MAX), alpha)
                 )
                 &&
                 (
                        ((tte->type() & VALUE_TYPE_LOWER) && v >= beta)
                     || ((tte->type() & VALUE_TYPE_UPPER) && v <= alpha)
                 );
  }
This seems to be about -5 ELO compared to SF default at 20'', but needs more testing, also at longer tc.
It seems there is still work left to find a real neat solution regarding the playing strength.

Jeremy Bernstein
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Re: Designing an analysis friendly Stockfish?

Post by Jeremy Bernstein » Sun Feb 06, 2011 12:01 am

Bildschirmfoto 2011-02-06 um 00.00.26.png

Peter C
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Re: Designing an analysis friendly Stockfish?

Post by Peter C » Sun Feb 06, 2011 12:08 am

Jeremy Bernstein wrote:Here's a game:

...

Note how the PA_J+GTB finds a forced mate around move 80 or so and then loses its way by move 99. What happened?
I'd guess it's probably a bug in the GTB probing. Is the Decemberists' patch applied?

fruity wrote:(1) remove the history/killer tweak. It seems to work well only for low depths. Could be reintroduced later with tweaking for low depths only, but at the moment it doesn't help to find the best PV TT code, so leave it away for now.
I added a UCI option to control the depth in ply it's used up to. With my default setting of 20 (which could/should be tweaked a bit), it's tad better than SF default at 40 moves/1 second.

I've noticed that our SF tends to lose on time more often than the default at hyperbullet (40 moves/1 second), especially in the first 4-5 games. Has anyone else noticed this behavior?

Peter

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