Testing depend largely on good Openings

[Chessqueen]

Some people always are judging engines based on their performance, but a big factor that most of us do NOT take into consideration is that fact that well balanced opening has to be used otherwise an engine rate even 100 to 14o rating lower can easily draw against the stronger engine, for instance with this opening if Black is the lower rated engine and it is about 120 to 140 ratings weaker it can easily draw, but if the stronger engine take Black side it will win easy.

[pgn][Event "Computer chess game"]
[Site "DESKTOP-OFQ3C0P"]
[Date "2022.07.03"]
[Round "?"]
[White "Stockfish_15_x64_avx2"]
[Black "Komodo-12.1.1-64bit-bmi2"]
[Result "1/2-1/2"]
[BlackElo "3430"]
[Time "13:05:38"]
[WhiteElo "3555"]
[TimeControl "900+10"]
[Termination "adjudication"]
[PlyCount "131"]
[WhiteType "program"]
[BlackType "program"]


1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d5 6. O-O dxc4 7. Nbd2 b5 8.
Ne5 Nd5 9. b3 Nc3 10. Qe1 Qxd4 11. Nxf7 Nd5 12. Ng5 h6 13. bxc4 bxc4 14. e3
Qe5 15. Nxc4 Qxg5 16. e4 Qh5 17. exd5 Bxa1 18. d6 exd6 19. Bxa8 Bh3 20. Bg2
Bxg2 21. Qe6+ Kh7 22. Kxg2 Bg7 23. f3 Qb5 24. Ne3 Re8 25. Qf7 Qd7 26. Qc4
c5 27. Rd1 Qe6 28. Qxe6 Rxe6 29. f4 Nc6 30. Kf1 Nb4 31. a3 Nc6 32. Nd5 Re4
33. Kf2 Kg8 34. Nf6+ Bxf6 35. Rxd6 Bd4+ 36. Kf3 Re1 37. Bd2 Rf1+ 38. Ke2
Rf2+ 39. Ke1 Kf7 40. Rxd4 Rxh2 41. Rd6 Nd4 42. Bc3 Nc2+ 43. Kf1 Ne3+ 44.
Ke1 Ng4 45. Rc6 c4 46. Rxc4 Rh3 47. Rc5 Rxg3 48. f5 gxf5 49. Rxf5+ Ke6 50.
Rc5 h5 51. Kf1 h4 52. Be1 Rh3 53. Rg5 Nf6 54. Rg7 Rxa3 55. Bxh4 Nd5 56. Bd8
Ra2 57. Rh7 Ke5 58. Ke1 Kd4 59. Kd1 a5 60. Bxa5 Rxa5 61. Ke2 Ra2+ 62. Kf3
Ra3+ 63. Kf2 Nf6 64. Rh4+ Ne4+ 65. Ke2 Re3+ 66. Kf1 *
[/quote]



[pgn][Event "Computer chess game"]
[Site "DESKTOP-OFQ3C0P"]
[Date "2022.07.03"]
[Round "?"]
[White "Dragon-2.6.1-64bit-avx2"]
[Black "Stockfish_15_x64_avx2"]
[Result "*"]
[BlackElo "3530"]
[ECO "D77"]
[Opening "Neo-Grünfeld, 6.O-O dxc4"]
[Time "19:21:03"]
[WhiteElo "3565"]
[TimeControl "120+38"]
[Termination "time forfeit"]
[PlyCount "124"]
[WhiteType "program"]
[BlackType "program"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d5 6. O-O dxc4 7. Nbd2 b5 8.
Ne5 Nd5 9. b3 Nc3 10. Qe1 Qxd4 11. Nxf7 Nd5 12. Ng5 h6 13. bxc4 bxc4 14. e3
Qe5[/pgn][/pgn]

[Chessqueen]

In this case using the same opening up to move 15 which benefit the Black side, even if they are just a few rating points apart Black will win easy.

[pgn][Event "Computer chess game"]
[Site "DESKTOP-OFQ3C0P"]
[Date "2022.07.03"]
[Round "?"]
[White "Dragon-2.6.1-64bit-avx2"]
[Black "Stockfish_15_x64_avx2"]
[Result "0-1"]
[BlackElo "3555"]
[ECO "D77"]
[Opening "Neo-Grünfeld, 6.O-O dxc4"]
[Time "19:21:03"]
[WhiteElo "340"]
[TimeControl "900+10"]
[Termination "adjudication"]
[PlyCount "153"]
[WhiteType "program"]
[BlackType "program"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d5 6. O-O dxc4 7. Nbd2 b5 8.
Ne5 Nd5 9. b3 Nc3 10. Qe1 Qxd4 11. Nxf7 Nd5 12. Ng5 h6 13. bxc4 bxc4 14. e3
Qe5 15. Nxc4 Qxg5 16. e4 Qh5 17. exd5 Bxa1 18. d6 exd6 19. Bxa8 Bh3 20. Bg2
Bxg2 21. Qe6+ Kh7 22. Kxg2 Bg7 23. f3 Qb5 24. Ne3 Re8 25. Qf7 Qd7 26. Qc4
Re5 27. Rd1 Qe7 28. Re1 Rc5 29. Qb3 Nc6 30. Bb2 Bxb2 31. Qxb2 h5 32. Qd2
Qf8 33. Re2 Ne5 34. Rf2 Qa8 35. Qd4 Kg7 36. h3 Kf7 37. g4 Ke6 38. Qb4 a5
39. Qa4 Qc6 40. Qb3+ Kd7 41. Qg8 Qb5 42. gxh5 gxh5 43. Qh7+ Kc8 44. h4 Nd3
45. Rd2 Nf4+ 46. Kg3 Ne2+ 47. Kh2 Nc3 48. Ng2 Qb1 49. Qh8+ Kb7 50. Qd4 Nb5
51. Qf4 Qb4 52. Qe3 a4 53. Qd3 d5 54. Kg3 d4 55. Nf4 Re5 56. Rd1 Qd6 57.
Rd2 Kb6 58. Kg2 Qf6 59. Kg3 c6 60. Ng2 a3 61. f4 Rc5 62. Kh2 Qf5 63. Qe2
Rc3 64. Kg1 Rc1+ 65. Kh2 Rb1 66. Qd3 Qxd3 67. Rxd3 Rf1 68. Rb3 Rf2 69. Kg3
Rxa2 70. Rb1 Rb2 71. Ra1 Rb3+ 72. Kf2 Nd6 73. f5 Nxf5 74. Nf4 c5 75. Nxh5
Nxh4 76. Ng7 c4 77. Ne6 {User Adjudication} *[/pgn]

[lkaufman]

This is precisely why so many are switching to unbalanced openings (with color reversal). If you look at the current CCRL Complete Rapid list, the top five engines (four stockfish versions and latest Komodo Dragon) are all within four elo points (!), while the next six (five Stockfish versions or derivatives plus previous Komodo Dragon) are within another dozen Elo of the top five, using reasonably balanced openings. The best engines just don't lose games against each other anymore with good openings (with 4 cpu and Rapid tc). With unbalanced openings, the average result of a two game match between equal opponents is likely to be one win and one draw, or at least close to that. If one engine is just slightly stronger, it will tend to be the one that scores the 1.5. So instead of a four elo gap, we might see a forty elo gap or more when unbalanced openings are used. With good openings, I think it is unlikely that any engine will ever reach 3600 (top now is 3540) on that CCRL Rapid list; at about 2 elo per year, it would take 30 years, but progress will surely get less each year. With unbalanced openings, it is true that there is a practical upper limit of 192 elo on the result between two super engines, assuming that they are strong enough never to lose from the nearly winning side. But as long as engine pairings are limited to maybe 150 elo apart or less, there is no obvious limit to how high ratings might go with unbalanced openings, 5000, 6000, who knows? You may argue that this is artificial, that only "balanced" (i.e. typical GM) openings should be used or else it's not real chess, and that is a valid argument, but unless we go with unbalanced openings computer chess is dying; there isn't enough room for further gains from the normal starting position, the path to a draw is too clear now. We just have to learn to think in terms of pairs of games; as long as each side gets White once from the same opening, it is fair, it's just not how chess is played between humans (well, so far anyway).

[Modern Times]

<snip> but unless we go with unbalanced openings computer chess is dying; there isn't enough room for further gains from the normal starting position, the path to a draw is too clear now.

Only at the very top. Computer chess is very much alive further down. What is killing it are the endless arguments about what is "acceptable" or not and to whom, in terms of "originality".

[Graham Banks]

You may argue that this is artificial, that only "balanced" (i.e. typical GM) openings should be used or else it's not real chess, and that is a valid argument, but unless we go with unbalanced openings computer chess is dying.

People have been saying that computer chess is dying for the past 15 years, yet these days there are more engines than there ever were in the past.

As a chessplayer, I prefer that engines play balanced lines, not given artificial wins.
Most draws have some interest involved anyway.

However, I'd say that unlike myself and Frank (and perhaps a few others), most testers aren't interested in watching decent games. They just want to spit out as many games as they can to construct a rating list.

[Chessqueen]

You may argue that this is artificial, that only "balanced" (i.e. typical GM) openings should be used or else it's not real chess, and that is a valid argument, but unless we go with unbalanced openings computer chess is dying.

People have been saying that computer chess is dying for the past 15 years, yet these days there are more engines than there ever were in the past.

As a Chessplayer, I prefer that engines play balanced lines, not given artificial wins.
Most draws have some interest involved anyway.

If that is the case are you only using Balanced Chess Openings in your tests?

[Graham Banks]

You may argue that this is artificial, that only "balanced" (i.e. typical GM) openings should be used or else it's not real chess, and that is a valid argument, but unless we go with unbalanced openings computer chess is dying.

People have been saying that computer chess is dying for the past 15 years, yet these days there are more engines than there ever were in the past.

As a Chessplayer, I prefer that engines play balanced lines, not given artificial wins.
Most draws have some interest involved anyway.

If that is the case are you only using Balanced Chess Openings in your tests?

I try to.

[Lazy_Frank]

You may argue that this is artificial, that only "balanced" (i.e. typical GM) openings should be used or else it's not real chess, and that is a valid argument, but unless we go with unbalanced openings computer chess is dying.

People have been saying that computer chess is dying for the past 15 years, yet these days there are more engines than there ever were in the past.

As a chessplayer, I prefer that engines play balanced lines, not given artificial wins.
Most draws have some interest involved anyway.

However, I'd say that unlike myself and Frank (and perhaps a few others), most testers aren't interested in watching decent games. They just want to spit out as many games as they can to construct a rating list.

With balanced lines there is always two arguments: sample size too small and error bars always fits to equality.
And no one gives artificial automatic win just screwing up line, engine should fight in attack to win and defend from disadvantage side.

[Chessqueen]

You may argue that this is artificial, that only "balanced" (i.e. typical GM) openings should be used or else it's not real chess, and that is a valid argument, but unless we go with unbalanced openings computer chess is dying.

People have been saying that computer chess is dying for the past 15 years, yet these days there are more engines than there ever were in the past.

As a Chessplayer, I prefer that engines play balanced lines, not given artificial wins.
Most draws have some interest involved anyway.

If that is the case are you only using Balanced Chess Openings in your tests?

I try to.

That is the reason why I always pick or limit opening book to no more than 8 moves deep, and let the engines continue and chosing the best continuation which most of the times are better than the long opening books.

[Chessqueen]

You may argue that this is artificial, that only "balanced" (i.e. typical GM) openings should be used or else it's not real chess, and that is a valid argument, but unless we go with unbalanced openings computer chess is dying.

People have been saying that computer chess is dying for the past 15 years, yet these days there are more engines than there ever were in the past.

As a Chessplayer, I prefer that engines play balanced lines, not given artificial wins.
Most draws have some interest involved anyway.

If that is the case are you only using Balanced Chess Openings in your tests?

I try to.

That is the reason why I always pick or limit opening book to no more than 8 moves deep, and let the engines continue choosing the best continuation which most of the times are better than the long opening books.

I took the same Opening, but limited to only 7 Moves and let both engines finds their own variation and Komodo Dragon found much better moves for the White pieces than the opening book that had Black side winning after move 21. As you can see top engines can generate much better variations if you limit the opening up to 7 or 8 moves. In the opening book move 7. Nbd2 was worse than what Komodo found 7. Ne5, and all the other moves from that point on.....

[pgn][Event "Computer chess game"]
[Site "DESKTOP-OFQ3C0P"]
[Date "2022.07.03"]
[Round "?"]
[White "Dragon-2.6.1-64bit-avx2"]
[Black "Stockfish_15_x64_avx2"]
[Result "1/2-1/2"]
[BlackElo "3560"]
[ECO "D77"]
[Opening "Neo-Grünfeld, 6.O-O dxc4"]
[Time "19:21:03"]
[WhiteElo "3540"]
[TimeControl "900+10"]
[Termination "normal"]
[PlyCount "118"]
[WhiteType "program"]
[BlackType "program"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d5 6. O-O dxc4 7. Ne5 Ne8 8.
Na3 c5 9. Be3 {(Bc1-e3 c5xd4 Be3xd4 Ne8-d6 Ne5xc4 Bg7xd4 Qd1xd4 Nd6xc4
Qd4xc4 Nb8-c6 Rf1-d1 Qd8-b6 Qc4-b5 Bc8-e6 Qb5xb6 a7xb6 Bg2-d5 Be6xd5 Rd1xd5
Rf8-d8 Rd5-b5 Ra8-a6 Kg1-f1 Rd8-c8 Ra1-d1 Kg8-f8 Rd1-d7 Rc8-b8 Rd7-d2
Kf8-e8 g3-g4 Rb8-d8 Kf1-e1 f7-f6 Rb5-b3 Rd8xd2 Ke1xd2 h7-h5 g4xh5 g6xh5
Kd2-c3 Nc6-e5 f2-f4 Ne5-c6 Na3-c4) +0.44/38 57} cxd4 {(c5xd4 Be3xd4 Ne8-d6
Ne5xc4 Bg7xd4 Qd1xd4 Nd6xc4 Qd4xc4 Nb8-c6 Rf1-d1 Qd8-b6 Qc4-b5 Bc8-e6
Qb5xb6 a7xb6 Bg2-d5 Be6xd5 Rd1xd5 Rf8-d8 Rd5-b5 Ra8-a6 Kg1-f1 Rd8-c8 Ra1-d1
Kg8-f8 Rd1-d7 Rc8-b8 g3-g4 Kf8-e8 Rd7-d2 f7-f6 Rb5-b3 Rb8-d8 Rd2xd8+ Nc6xd8
Kf1-e1 Nd8-e6 Ke1-d2 Ne6-c5 Rb3-h3 Nc5-e4+ Kd2-e1 Ne4-g5 Rh3-c3 Ng5-f7
f2-f3) -0.23/36 18} 10. Bxd4 {(Be3xd4 Ne8-d6 Ne5xc4 Bg7xd4 Qd1xd4 Nd6xc4
Qd4xc4 Nb8-c6 Rf1-d1 Qd8-b6 Qc4-b5 Bc8-e6 Qb5xb6 a7xb6 Bg2-d5 Be6xd5 Rd1xd5
Rf8-d8 Rd5-b5 Ra8-a6 Kg1-f1 Rd8-c8 Ra1-d1 Kg8-f8 Rd1-d7 Rc8-b8 Kf1-e1
Kf8-e8 Rd7-d2 Rb8-d8 Rd2xd8+ Nc6xd8 Ke1-d2 Nd8-e6 Rb5-b3 Ne6-d4 Rb3-d3
Nd4-c6 Rd3-c3 f7-f6 Rc3-b3) +0.48/36 29} Nd6 {(Ne8-d6 Ne5xc4 Bg7xd4 Qd1xd4
Nd6xc4 Qd4xc4 Nb8-c6 Rf1-d1 Qd8-b6 Qc4-b5 Bc8-e6 Qb5xb6 a7xb6 Bg2-d5 Be6xd5
Rd1xd5 Ra8-a5 Ra1-d1 Ra5xd5 Rd1xd5 Rf8-a8 Kg1-f1 Kg8-f8 Kf1-e1 Kf8-e8
Rd5-b5 Ra8-a6 g3-g4 f7-f6 Ke1-d2 Nc6-d4 Rb5-b4 Nd4-c6 Rb4-b3 Ra6-a4 Rb3xb6
Ra4xg4 Rb6xb7) -0.33/35 55} 11. Nexc4 {(Ne5xc4 Bg7xd4 Qd1xd4 Nd6xc4 Qd4xc4
Nb8-c6 Rf1-d1 Qd8-b6 Qc4-b5 Bc8-e6 Qb5xb6 a7xb6 Bg2-d5 Be6xd5 Rd1xd5 Rf8-d8
Ra1-d1 Rd8xd5 Rd1xd5 Ra8-a5 Rd5-b5 Ra5-a6 Kg1-f1 Kg8-f8 Kf1-e1 Kf8-e8
Ke1-d2 Nc6-d4 Rb5-b4 Nd4-c6 Rb4-b3 Nc6-d4 Rb3-d3 Nd4-f5 f2-f3 Nf5-d6 Rd3-b3
Ke8-d8 g3-g4 Kd8-e8) +0.50/36 24} Bxd4 {(Bg7xd4 Qd1xd4 Nd6xc4 Qd4xc4 Nb8-c6
Rf1-d1 Qd8-b6 Qc4-b5 Bc8-e6 Qb5xb6 a7xb6 Bg2-d5 Be6xd5 Rd1xd5 Rf8-d8 Ra1-d1
Rd8xd5 Rd1xd5 f7-f6 Kg1-f1 Kg8-f7 Kf1-e1 Kf7-e8 f2-f3 Nc6-e5 Rd5-b5 Ra8-a6
Ke1-d1 Ne5-f7 Rb5-b4 Nf7-d6 Kd1-c2 Ke8-d7 Kc2-b3 Kd7-c6 Na3-c2 Ra6-a8
Nc2-d4+ Kc6-c7 a2-a4 e7-e5 Nd4-b5+ Nd6xb5 Rb4xb5) -0.24/38 23} 12. Qxd4
{(Qd1xd4 Nd6xc4 Qd4xc4 Nb8-c6 Rf1-d1 Qd8-b6 Qc4-b5 Bc8-e6 Qb5xb6 a7xb6
Bg2-d5 Be6xd5 Rd1xd5 Rf8-d8 Ra1-d1 Rd8xd5 Rd1xd5 f7-f6 Kg1-f1 Kg8-f7 Kf1-e1
h7-h5 Ke1-d2 Nc6-e5 f2-f3 Kf7-e8 Rd5-b5 Ke8-d7 Rb5-b3 Kd7-c6 Na3-c2 Ra8-a5
e2-e4 Ra5-a4 a2-a3 Ra4-c4 Nc2-b4+ Kc6-d6 h2-h4 f6-f5 f3-f4 Rc4-d4+ Nb4-d3
f5xe4 f4xe5+ Kd6-d5) +0.44/39 25} Nxc4 {(Nd6xc4 Qd4xc4 Nb8-c6 Rf1-d1 Qd8-b6
Qc4-b5 Bc8-e6 Qb5xb6 a7xb6 Bg2-d5 Be6xd5 Rd1xd5 Rf8-d8 Ra1-d1 Rd8xd5 Rd1xd5
f7-f6 Kg1-f1 Kg8-f7 Kf1-e1 Ra8-a5 Rd5-d7 Ra5-a7 Ke1-d2 Kf7-e8 Rd7-d5 Nc6-e5
f2-f3 Ra7-a5 Rd5xa5 b6xa5 Kd2-c3 Ke8-d7 Na3-c4 Ne5xc4 Kc3xc4 Kd7-c6 f3-f4
b7-b5+ Kc4-d4 h7-h5 e2-e4 Kc6-d6) -0.19/34 31} 13. Qxc4 {(Qd4xc4 Nb8-c6
Rf1-d1 Qd8-b6 Qc4-b5 Bc8-e6 Qb5xb6 a7xb6 Bg2-d5 Be6xd5 Rd1xd5 Rf8-d8 Ra1-d1
Rd8xd5 Rd1xd5 f7-f6 Kg1-f1 Kg8-f7 Kf1-e1 Ra8-a5 Rd5-d7 Ra5-a7 Ke1-d2 Kf7-e8
Rd7-d5 Nc6-e5 Rd5-b5 Ra7-a6 h2-h4 Ke8-d7 Rb5-b3 Ne5-f7 f2-f3 h7-h5 Kd2-c3
Nf7-d6 Rb3-b4) +0.36/33 32} Nc6 {(Nb8-c6 Rf1-d1 Qd8-b6 Qc4-b5 Bc8-e6 Qb5xb6
a7xb6 Bg2-d5 Be6xd5 Rd1xd5 Rf8-d8 Ra1-d1 Rd8xd5 Rd1xd5 Kg8-f8 Kg1-f1 Kf8-e8
Kf1-e1 Ra8-a5 Rd5-b5 Ra5-a6 Ke1-d2 Nc6-d4 Rb5-d5 Nd4-e6 Kd2-c1 Ne6-c7
Rd5-d3 b6-b5 Rd3-b3 Ke8-d8 f2-f3 Kd8-d7 e2-e4 Kd7-c6 Kc1-b1 Kc6-c5 Rb3-c3+
Kc5-d6 Rc3-c1 h7-h5 f3-f4 f7-f6 Rc1-d1+ Kd6-e6) -0.30/36 22} 14. Rfd1
{(Rf1-d1 Qd8-b6 Qc4-b5 Bc8-e6 Qb5xb6 a7xb6 Bg2-d5 Be6xd5 Rd1xd5 Ra8-a5
Ra1-d1 Rf8-a8 Rd5-d7 Ra8-a7 Rd7-c7 b6-b5 Rd1-d5 b5-b4 Na3-b5 Ra7-a6 Rc7xb7
Ra5xa2 Rd5-d2 Kg8-f8 Rb7-c7 Kf8-g7 Rc7-d7 b4-b3 Kg1-g2 Ra6-a4 f2-f3 Ra2-a1
Rd7-c7 Ra4-b4 Nb5-c3 Rb4-c4 g3-g4 h7-h5 g4xh5 g6xh5 Kg2-f2) +0.32/38 38}
Qb6 {(Qd8-b6 Qc4-b5 Bc8-e6 Qb5xb6 a7xb6 Bg2-d5 Be6xd5 Rd1xd5 Rf8-d8 Ra1-d1
Rd8xd5 Rd1xd5 f7-f6 Kg1-f1 Kg8-f7 Kf1-e1 Kf7-e8 Rd5-b5 Ra8-a6 Ke1-d2 Nc6-d4
Rb5-d5 Nd4-e6 f2-f3 h7-h5 Rd5-d3 Ne6-c7 Kd2-c1 b6-b5 Rd3-b3 Ke8-d7 e2-e4
Kd7-c8 Kc1-b1 Ra6-b6 h2-h4 Kc8-d7 Na3-c2 Kd7-c8) -0.21/36 26} 15. Qb5
{(Qc4-b5 Bc8-e6 Qb5xb6 a7xb6 Bg2-d5 Be6xd5 Rd1xd5 Rf8-d8 Rd5-b5 Ra8-a6
Kg1-f1 Rd8-d4 Ra1-c1 Rd4-d7 e2-e3 h7-h5 Kf1-e1 f7-f6 Ke1-e2 Kg8-g7 f2-f4
Nc6-a7 Rb5-b4 Kg7-f7 Rc1-c3 b6-b5 Rc3-d3 Rd7-c7 e3-e4 Ra6-a4 Rb4xa4 b5xa4
Rd3-c3 Rc7xc3 b2xc3) +0.36/37 35} Be6 {(Bc8-e6 Qb5xb6 a7xb6 Bg2-d5 Be6xd5
Rd1xd5 Rf8-d8 Rd5-b5 Ra8-a6 Kg1-f1 Rd8-d4 Ra1-c1 f7-f6 e2-e3 Rd4-d7 Kf1-e2
Nc6-a7 Rb5-b3 Kg8-f7 h2-h3 h7-h5 Rc1-c2 b6-b5 Rb3-b4 Kf7-e6 Rc2-c3 Ke6-f7
h3-h4 Ra6-d6 Rc3-c2 Rd6-a6 Rc2-c1 Kf7-e8 Rb4-b3 Ke8-f7 Rc1-c5 Ra6-c6 Rc5-c3
Rc6xc3 b2xc3 Rd7-c7) -0.14/38 26} 16. Qxb6 {(Qb5xb6 a7xb6 Bg2-d5 Be6xd5
Rd1xd5 Rf8-d8 Rd5-b5 Ra8-a6 Kg1-f1 Rd8-d4 Ra1-c1 Rd4-d7 e2-e3 f7-f6 Kf1-e2
Kg8-f7 f2-f4 Nc6-a7 Rb5-b3 b6-b5 g3-g4 Ra6-a4 Na3xb5 Na7xb5 Rb3xb5 Ra4xa2
h2-h4 Ra2-a6 Rc1-d1 Rd7xd1 Ke2xd1 Ra6-a1+ Kd1-e2 Ra1-g1 Ke2-f3 Rg1-f1+
Kf3-e4 Rf1-g1 g4-g5 Rg1-h1 Rb5xb7 Rh1xh4 g5xf6 Kf7xf6 Rb7-b8 Rh4-h1 b2-b4
h7-h5) +0.22/39 29} axb6 {(a7xb6 Bg2-d5 Be6xd5 Rd1xd5 Rf8-d8 Rd5-b5 Ra8-a6
Kg1-f1 Rd8-d4 Ra1-c1 f7-f6 e2-e3 Rd4-d7 Kf1-e2 Kg8-f7 Rc1-c2 h7-h5 h2-h4
Rd7-c7 Rc2-c4 Rc7-d7 Rc4-c1 Rd7-d6 Rc1-d1 Nc6-a7 Rb5-b4 Na7-c6 Rb4-b3
Rd6xd1 Ke2xd1 Nc6-e5 Kd1-e2 Ne5-d7 Rb3-b4 Kf7-e6 f2-f4 f6-f5 e3-e4 f5xe4
Rb4xe4+ Ke6-f7 Re4-b4 Ra6-a5 Ke2-e3 Nd7-f6 Rb4-b5) -0.17/39 19} 17. Bd5
{(Bg2-d5 Be6xd5 Rd1xd5 Rf8-d8 Rd5-b5 Ra8-a6 Kg1-f1 Rd8-d4 Ra1-c1 Rd4-d7
e2-e3 f7-f6 Kf1-e2 Kg8-f7 h2-h3 Rd7-c7 Rc1-c4 Rc7-d7 Rc4-c2 Nc6-a7 Rb5-b4
Na7-c6 Rb4-b3 h7-h5 f2-f4 Nc6-a5 Rb3-b5 Na5-c6 Rc2-d2 Kf7-e8 Rb5-b3 Rd7xd2+
Ke2xd2 Nc6-d8 e3-e4 Ra6-a4 Kd2-e3 Nd8-f7 Ke3-d3 g6-g5 Rb3xb6 h5-h4 g3xh4)
+0.31/40 30} Bxd5 {(Be6xd5 Rd1xd5 Rf8-d8 Rd5-b5 Ra8-a6 Kg1-f1 Rd8-d4 Ra1-c1
Rd4-d7 Kf1-e1 f7-f6 e2-e3 Kg8-f7 Ke1-e2 h7-h5 Rb5-b3 Nc6-a5 Rb3-b4 Na5-c6
Rb4-b5 Rd7-d6 Rc1-d1 Rd6xd1 Ke2xd1 Nc6-e5 Kd1-e2 Kf7-e8 f2-f4 Ne5-d7 Rb5-d5
Nd7-c5 Rd5-d4 Ra6-a8 Ke2-d2 g6-g5 f4xg5 f6xg5 Rd4-b4 Nc5-d7 Na3-c4 Ra8xa2
Nc4xb6 Nd7xb6 Rb4xb6) -0.12/39 33} 18. Rxd5 {(Rd1xd5 Rf8-d8 Rd5-b5 Ra8-a6
Kg1-f1 Rd8-d4 Ra1-c1 f7-f6 e2-e3 Rd4-d7 Kf1-e2 Kg8-f7 f2-f4 h7-h5 Rc1-c3
Nc6-a7 Rb5-b3 b6-b5 Rc3-d3 Rd7-c7 Ke2-d2 Kf7-e6 e3-e4 Rc7-c5 Rd3-d4 Na7-c6
Rd4-d5 Rc5xd5+ e4xd5+ Ke6xd5 Na3xb5 Ra6xa2 Nb5-c3+ Kd5-c4 Rb3xb7 Ra2-a6
Rb7-c7 f6-f5 Kd2-e2 Ra6-b6) +0.21/37 25} Rfd8 {(Rf8-d8 Rd5-b5 Ra8-a6 Kg1-f1
Rd8-d4 Ra1-c1 f7-f6 e2-e3 Rd4-d7 Kf1-e2 Kg8-f7 Rc1-c2 h7-h5 Rc2-c3 Rd7-d6
Rc3-d3 Rd6xd3 Ke2xd3 Nc6-e5+ Kd3-e2 Kf7-e8 Rb5-b4 Ke8-d7 f2-f4 Ne5-f7 e3-e4
Kd7-c6 Rb4-c4+ Kc6-d7 Rc4-d4+ Kd7-c6 Ke2-d3 e7-e5 Rd4-c4+ Kc6-d7 Na3-b5
Ra6xa2 Rc4-c7+ Kd7-e8 Nb5-c3 Ra2xb2 Nc3-d5) -0.06/38 39} 19. Rb5 {(Rd5-b5
Ra8-a6 Kg1-f1 Rd8-d4 Kf1-e1 f7-f6 e2-e3 Rd4-a4 Ra1-d1 Kg8-f7 Rd1-d3 Nc6-e5
Rd3-c3 Ne5-d7 Ke1-d2 g6-g5 f2-f4 Nd7-c5 Rc3-c4 Nc5-e4+ Kd2-d3 Ra4xa3+
Kd3xe4 Ra3xa2 f4xg5 f6xg5 Rc4-b4 Ra6-a5 Rb5xb6 Ra2-a1 Rb4-b5 Ra5xb5 Rb6xb5
Ra1-h1 Ke4-f5 Rh1xh2 Kf5xg5) +0.28/37 58} Ra6 {(Ra8-a6 Kg1-f1 Rd8-d4 Kf1-e1
f7-f6 e2-e3 Rd4-b4 Rb5xb4 Nc6xb4 Ke1-d2 Ra6-a5 Kd2-c3 Nb4-d5+ Kc3-c4 Nd5-c7
e3-e4 Ra5-c5+ Kc4-d3 Nc7-a6 Na3-c2 b6-b5 f2-f3 Kg8-f7 Kd3-d2 Rc5-c6 Ra1-d1
e7-e5 Nc2-e1 Kf7-e7 Ne1-d3 Rc6-d6 Kd2-e2 Rd6-c6 h2-h4 Rc6-c2+ Rd1-d2 Rc2-c4
Ke2-e3 b5-b4 g3-g4 Na6-c5 Nd3xc5 Rc4xc5) -0.16/40 25} 20. Kf1 {(Kg1-f1
Rd8-d4 Ra1-c1 Rd4-d7 e2-e3 f7-f6 Kf1-e2 Nc6-a7 Rb5-b3 Kg8-f7 Rc1-c2 h7-h5
Rc2-c1 Kf7-e6 h2-h3 b6-b5 Rc1-a1 Ra6-c6 Ra1-d1 Rc6-c5 Rd1xd7 Ke6xd7 Ke2-d2
Kd7-c7 Na3-c2 Na7-c6 Nc2-e1 b5-b4 Ne1-d3 Rc5-a5 Nd3xb4 Nc6xb4 Rb3xb4 Ra5xa2
g3-g4) +0.23/36 27} Rd4 {(Rd8-d4 Ra1-c1 Rd4-d7 e2-e3 f7-f6 Kf1-e2 Kg8-f7
h2-h3 Nc6-a7 Rb5-b3 b6-b5 Rc1-c5 Ra6-c6 Rc5-c3 Rc6xc3 b2xc3 Rd7-c7 f2-f4
Rc7-c5 e3-e4 g6-g5 f4-f5 Kf7-e8 Ke2-d3 b7-b6 h3-h4 h7-h5 Rb3-b1 g5xh4 g3xh4
Ke8-f7 Rb1-b4 Na7-c6 Rb4xb5 Nc6-e5+ Kd3-c2 Rc5xb5 Na3xb5 Ne5-f3) -0.04/35
27} 21. Rc1 {(Ra1-c1 f7-f6 e2-e3 Rd4-d7 Kf1-e2 Kg8-f7 Rc1-c2 h7-h5 h2-h3
Nc6-a7 Rb5-b3 b6-b5 Rc2-c3 Ra6-a4 Na3xb5 Na7xb5 Rb3xb5 Ra4xa2 Rc3-b3 Rd7-c7
Ke2-f3 Rc7-c2 Rb5xb7 Ra2-a1 Rb3-c3 Rc2xc3 b2xc3 Ra1-c1 Rb7-c7 g6-g5 e3-e4
Kf7-e6 h3-h4 g5xh4 g3xh4 Ke6-d6 Rc7-c8 Kd6-d7 Rc8-c5 e7-e5 Kf3-e2 Rc1-h1
Rc5-d5+ Kd7-e6) +0.22/38 36} f6 {(f7-f6 e2-e3 Rd4-d7 Kf1-e2 h7-h5 Rc1-c3
Nc6-a7 Rb5-b3 Kg8-f7 Rb3-b4 Na7-c6 Rb4-b5 Nc6-a7 Rb5-b3 Na7-c6 Rc3-d3
Rd7xd3 Ke2xd3 Nc6-e5+ Kd3-e2 g6-g5 f2-f4 Ne5-d7 Rb3-b4 Kf7-g6 f4xg5 f6xg5
Na3-c4 Ra6xa2 Nc4xb6 Nd7xb6 Rb4xb6+ Kg6-f5 h2-h3 Ra2-a1 Rb6xb7 Ra1-c1
Rb7-b4 Rc1-c2+ Ke2-f3 g5-g4+ h3xg4+ h5xg4+ Rb4xg4 Rc2xb2 Rg4-f4+ Kf5-g6
Rf4-e4 Kg6-f6 Kf3-g4) -0.03/39 99} 22. e3 {(e2-e3 Rd4-d7 Kf1-e2 Kg8-f7
Rc1-c2 h7-h5 h2-h3 Nc6-a7 Rb5-b3 b6-b5 h3-h4 Ra6-a4 Rc2-c5 b7-b6 Rc5-c2
b5-b4 Rc2-c4 Na7-c6 Rc4xc6 b4xa3 b2xa3 Rd7-a7 Rc6-c3 Ra7-a5 Rc3-d3 g6-g5
h4xg5 f6xg5 Ke2-f3 b6-b5 Rd3-c3 Kf7-f6 Kf3-g2 Kf6-f7 Rc3-c5 Kf7-f6 Rc5-c6+
e7-e6 Rc6-b6) +0.13/38 23} Rd7 {(Rd4-d7 Rc1-c3 Kg8-f7 Kf1-e2 Nc6-a7 Rb5-b3
h7-h5 Rc3-d3 Kf7-e8 e3-e4 Na7-c6 Rd3xd7 Ke8xd7 Ke2-e3 Nc6-e5 f2-f3 Ra6-a4
h2-h3 g6-g5 h3-h4 g5xh4 g3xh4 e7-e6 f3-f4 Ne5-g4+ Ke3-f3 Ng4-h2+ Kf3-g3
Nh2-g4 Kg3-f3) 0.00/32 23} 23. Rc3 {(Rc1-c3 h7-h5 Kf1-e2 Kg8-f7 h2-h4
Nc6-a7 Rb5-b3 Na7-c6 Rc3-c2 Rd7-d5 f2-f4 Rd5-d7 Rc2-d2 Rd7xd2+ Ke2xd2
Kf7-e6 Kd2-e2 Ke6-d7 Ke2-f2 Nc6-a7 Na3-b1 Ra6xa2 Rb3xb6 Kd7-c7 Rb6-b3
Ra2-a1 Nb1-c3 Na7-c6 e3-e4 Ra1-h1 Nc3-d5+ Kc7-c8 Rb3-c3 Kc8-d7 Nd5-b6+
Kd7-c7) +0.15/36 22} h5 {(h7-h5 Kf1-e2 Kg8-f7 f2-f3 Nc6-a7 Rb5-b3 b6-b5
h2-h4 Ra6-a5 Rc3-c5 Ra5-a4 Na3xb5 Ra4xa2 Rc5-c7 Rd7xc7 Nb5xc7 Na7-c8 Rb3xb7
Nc8-d6 Rb7-b4 Ra2-a5 Rb4-b3 Ra5-a2 Rb3-b4) 0.00/36 30} 24. Ke2 {(Kf1-e2
Kg8-f7 Rc3-b3 Rd7-d6 Rb3-d3 Rd6xd3 Ke2xd3 Kf7-e8 f2-f4 Nc6-a7 Rb5-b3 Ke8-d7
Kd3-c3 b6-b5 Kc3-b4 Kd7-e6 Kb4-c5 Ke6-f5 Na3xb5 Na7xb5 Rb3xb5 Kf5-g4 Rb5xb7
Ra6xa2 Kc5-d4 Kg4-h3 Rb7xe7 Kh3xh2 Re7-g7 Ra2-a4+ Kd4-d3 Kh2xg3 Rg7xg6+
Kg3-f3 Rg6xf6 Ra4-e4 f4-f5 Re4xe3+ Kd3-c4 Re3-e4+ Kc4-c5 Re4-f4 Rf6-f8
h5-h4 f5-f6 Rf4-f5+ Kc5-d6) +0.23/38 44} Kf7 {(Kg8-f7 h2-h3 Nc6-a7 Rb5-b3
Na7-c6 Rc3-d3 Rd7xd3 Ke2xd3 Nc6-e5+ Kd3-e2 Ne5-d7 Rb3-b4 Nd7-c5 Ke2-d2
Kf7-e8 f2-f3 Ke8-d7 Rb4-d4+ Kd7-e8 Rd4-d5 g6-g5 Rd5-d4 Ra6-a8 Rd4-b4 Ke8-f7
Rb4-b5 Ra8-a6 Kd2-c3 Kf7-e8 h3-h4 g5xh4 g3xh4 Ke8-d7 Na3-c2 Ra6xa2 b2-b4
Nc5-a4+ Kc3-b3 Ra2-b2+ Kb3xa4 Rb2xc2 Rb5xh5 Kd7-c6 b4-b5+ Kc6-d6) -0.02/39
37} 25. h3 {(h2-h3 Nc6-a7 Rb5-b3 Na7-c6 Rc3-d3 Rd7xd3 Ke2xd3 Nc6-e5+ Kd3-e2
Kf7-e8 h3-h4 Ke8-d8 e3-e4 Ne5-f7 f2-f3 Nf7-d6 Ke2-d2 Kd8-d7 Kd2-c2 g6-g5
h4xg5 f6xg5 Na3-b5 Ra6xa2 Nb5xd6 e7xd6 Rb3xb6 Ra2-a1 Rb6xb7+ Kd7-c6 Rb7-g7
Ra1-f1 Rg7xg5 Rf1xf3 Kc2-c1 Rf3-f1+ Kc1-d2 Rf1-f3 Kd2-e2 Rf3-b3 Ke2-f1
Kc6-d7 Kf1-g1 Kd7-e6 Kg1-g2 Rb3xb2+ Kg2-h3) +0.11/36 61} Na7 {(Nc6-a7
Rb5-b3 Na7-c6 f2-f4 Rd7-d5 h3-h4 Rd5-d7 Rc3-d3 Kf7-e6 Rd3xd7 Ke6xd7 Ke2-f3
Nc6-a7 Rb3-d3+ Kd7-e6 Rd3-c3 Ke6-d7 e3-e4 Na7-c6 Kf3-e3 b6-b5 Rc3-d3+
Kd7-e8 Rd3-b3 b5-b4 Na3-c2 Ra6xa2 Nc2xb4 Ra2-a1 Nb4-d3 Ra1-g1 Ke3-f2 Rg1-d1
Kf2-e2 Rd1-g1 Ke2-f2) 0.00/42 76} 26. Rbb3 {(Rb5-b3 Na7-c6 Na3-c4 Ra6xa2
Nc4xb6 Rd7-d6 Nb6-c4 Rd6-d7 Rb3-b5 Nc6-a7 Rb5-b6 Ra2-a1 h3-h4 Na7-c6 Rb6-b3
Ra1-g1 Rc3-c2 Rg1-h1 Rb3-b5 Nc6-a7 Rb5-b4 Na7-c6 Rb4-b6 Rh1-a1 Nc4-d2
Nc6-e5 Nd2-f3 Ne5xf3 Ke2xf3 Ra1-d1 Rb6-b5 Rd1-e1 Rc2-c4 Re1-d1 Rb5-b3
Rd1-a1 Rc4-c2 Ra1-d1 Kf3-e2 Rd1-d6 Rb3-b5 Rd6-d5 Rb5-b4 Rd5-d3 Ke2-f3)
+0.10/45 74} Nc6 {(Na7-c6 Na3-c4 Ra6xa2 Nc4xb6 Rd7-d6 Nb6-c4 Rd6-d7 h3-h4
Kf7-e8 Nc4-d2 Ra2-a5 Nd2-e4 Ra5-e5 f2-f3 Rd7-c7 Rb3-b6 Re5-a5 Ke2-f2 Ra5-a1
f3-f4 Rc7-d7 Rc3-c2 Rd7-c7 Kf2-g2 Ra1-b1 Kg2-f2 Ke8-f7 Ne4-c5 Nc6-d8 Kf2-f3
Kf7-e8 Rc2-c3 Ke8-f7 Kf3-e2 Rb1-h1 Rb6-b4 Rh1-b1 Rb4-b5 Rb1-g1 Ke2-f3
Rg1-f1+ Kf3-e2) 0.00/41 17} 27. Nc4 {(Na3-c4 Ra6xa2 Nc4xb6 Rd7-d6 Nb6-c4
Rd6-d7 Nc4-d2 Ra2-a1 Nd2-f3 g6-g5 Nf3-e1 Ra1-b1 h3-h4 g5xh4 g3xh4 Nc6-e5
Ne1-d3 Ne5xd3 Rc3xd3 Rd7-c7 Rb3-b4 Rb1-h1 Rd3-c3 Rc7-c6 Rb4xb7 Rc6xc3 b2xc3
Rh1xh4 Rb7-b8 Rh4-h1 Ke2-f3 Rh1-c1 Rb8-h8 Rc1xc3 Rh8xh5 Rc3-c2 Rh5-b5
Kf7-e6 Rb5-b6+ Ke6-d7 Rb6-b7+ Kd7-e6 Rb7-b4 Ke6-d6 Rb4-d4+ Kd6-e6) +0.03/38
40} Rxa2 {(Ra6xa2 Nc4xb6 Rd7-d6 Nb6-c4 Rd6-d7 Nc4-d2 Ra2-a1 Nd2-f3 g6-g5
Rc3-d3 Rd7-c7 Rd3-c3 Rc7-d7) 0.00/44 22} 28. Nxb6 {(Nc4xb6 Rd7-d6 Nb6-c4
Rd6-d7 Rb3-b5 Nc6-a7 Rb5-b6 Ra2-a1 Rc3-a3 Ra1xa3 b2xa3 Na7-c6 g3-g4 h5xg4
h3xg4 g6-g5 a3-a4 Rd7-d5 Rb6xb7 Rd5-c5 Nc4-d6+ Kf7-f8 Nd6-f5 Rc5-c2+ Ke2-f3
Rc2-a2 a4-a5 Ra2xa5 Kf3-g3 Ra5-a4 f2-f3 Ra4-a7 Rb7-b6 Nc6-e5 Rb6-b8+ Kf8-f7
Rb8-h8 Ne5-c6 Rh8-h7+ Kf7-g8 Rh7-h1 Nc6-e5 Rh1-c1 Kg8-f7 f3-f4) +0.08/40
18} Rd6 {(Rd7-d6 Nb6-c4 Rd6-d7 Rb3-b5 Nc6-a7 Rb5-b6 Ra2-a1 Rc3-a3 Ra1xa3
b2xa3 Na7-c6 Rb6-b5 Nc6-d8 Nc4-a5 Rd7-c7 Ke2-d2 Kf7-e8 a3-a4 Rc7-d7+ Kd2-c3
Rd7-c7+ Kc3-d3 Rc7-d7+ Kd3-c3) 0.00/44 18} 29. Nc4 {(Nb6-c4 Rd6-d7 Rc3-c1)
+0.07/43 92} Rd7 {(Rd6-d7 Rc3-c1 Rd7-c7 Ke2-d1 Rc7-d7+ Kd1-e1 Nc6-a5 Nc4xa5
Ra2xa5 Ke1-e2 Ra5-d5 h3-h4 Rd5-d2+ Ke2-e1 Rd2-d5 Ke1-f1 Rd5-d6 Kf1-e2
Rd6-d2+) 0.00/41 20} 30. Rc1 {(Rc3-c1 Rd7-c7 Ke2-d1 Rc7-d7+ Kd1-e1 Nc6-a5
Nc4xa5 Ra2xa5 h3-h4 Ra5-d5 Ke1-f1 Rd5-d6 Rb3-b4 Rd6-c6 Rc1xc6 b7xc6 Kf1-e2
Rd7-d5 Rb4-c4 Rd5-b5 b2-b4 e7-e5 f2-f4 e5xf4 g3xf4 Kf7-e7 Ke2-d3 Ke7-d6
e3-e4 Kd6-d7 Kd3-e3 Kd7-c7 Rc4-d4 c6-c5 b4xc5 Rb5xc5) +0.08/36 17} Rc7
{(Rd7-c7 Ke2-d1 Rc7-d7+ Kd1-e1 Nc6-a5 Nc4xa5 Ra2xa5 h3-h4 Ra5-d5 Ke1-f1
Rd5-d6 Rb3-b4 b7-b6 Rc1-c2 Rd7-a7 Kf1-e2 Ra7-d7 Rb4-b5 Rd7-a7 Rb5-b4)
0.00/41 21} 31. Rb5 {(Rb3-b5 Nc6-a7 Rb5-b6 Na7-c8 Rb6-b4 Kf7-e6 Rc1-c3
Ra2-a6 f2-f4 Ra6-c6 g3-g4 h5xg4 h3xg4 b7-b5 Nc4-a3 Rc6xc3 b2xc3 Rc7xc3
Na3xb5 Rc3-c1 Ke2-f3 Nc8-d6 Nb5xd6 Ke6xd6 Rb4-b8 Kd6-e6 Rb8-g8 Ke6-f7
Rg8-h8 Rc1-f1+ Kf3-g2 Rf1-c1 Rh8-b8 Kf7-e6 Kg2-f3 Rc1-c7 Rb8-b6+) +0.05/36
16} Na7 {(Nc6-a7 Rb5-b4 Na7-c6 Rb4-b5) 0.00/40 18} 32. Rb6 {(Rb5-b6 Na7-c8
Rb6-b4 Kf7-e6 Rc1-c3 Ra2-a6 Rc3-b3 Ra6-c6 Nc4-a3 Nc8-d6 Na3-b5 Nd6xb5
Rb4xb5 Rc6-c2+ Ke2-f3 Rc7-d7 Rb5-b6+ Ke6-f7 Rb3-c3 Rc2xc3 b2xc3 Rd7-c7
c3-c4 Rc7xc4 Rb6xb7 Rc4-c1 Rb7-b4 Rc1-h1 h3-h4 Kf7-e6 Rb4-b7 Rh1-c1 Rb7-b6+
Ke6-f7 Rb6-b2 Rc1-d1 Rb2-b4 Rd1-d2 g3-g4 Rd2-a2 g4xh5 g6xh5) +0.04/38 17}
Nc8 {(Na7-c8 Rb6-b4 Kf7-e6 Rc1-c3 Nc8-d6 Ke2-d3 Ra2-a1 Nc4xd6 Rc7xc3+ b2xc3
Ke6xd6 Rb4xb7 Ra1-a2 f2-f4 Ra2-g2 g3-g4 h5xg4 h3xg4 Rg2xg4 c3-c4 g6-g5
f4-f5 Rg4-g1 c4-c5+ Kd6xc5 Rb7xe7 Kc5-d5 Re7-e6 Rg1-g3 Re6xf6 Kd5-e5 Rf6-f8
g5-g4 f5-f6 Ke5-e6 Rf8-b8 Ke6xf6 Rb8-b6+ Kf6-f5 Rb6-b5+ Kf5-g6 Rb5-b6+
Kg6-f7 Rb6-b7+ Kf7-g6) +0.04/37 18} 33. Rb4 {(Rb6-b4 Kf7-e6 Ke2-d3 Ra2-a6
Rc1-c3 Rc7-d7+ Kd3-e2 Rd7-c7 e3-e4 Ra6-c6 Ke2-d3 Rc7-d7+ Kd3-e3 Rd7-c7
Ke3-d3) 0.00/38 24} Ke6 {(Kf7-e6 Rc1-c3 Nc8-d6 Ke2-d3 Ra2-a6 e3-e4 Nd6xc4
Rc3xc4 Ke6-d7 Rc4xc7+ Kd7xc7 Rb4-c4+ Kc7-d6 Rc4-d4+ Kd6-c6 Rd4-c4+ Kc6-d6)
0.00/39 23} 34. Rc3 {(Rc1-c3 Ra2-a6 Rc3-b3 Ra6-c6 Nc4-a3 Nc8-d6 Na3-b5
Nd6xb5 Rb4xb5 Rc6-c2+ Ke2-f3 Rc7-d7 Rb5-b6+ Ke6-f7 Rb3-c3 Rc2xc3 b2xc3
Rd7-c7 c3-c4 Rc7xc4 Rb6xb7 h5-h4 g3xh4 Rc4xh4 Kf3-g2 Rh4-h5 Rb7-b4 Kf7-e6
h3-h4 Rh5-h8 Rb4-e4+ Ke6-f7 Re4-d4 f6-f5 Rd4-b4 Rh8-c8 Kg2-g3 Kf7-e6 f2-f3)
+0.04/39 60} Nd6 {(Nc8-d6 Ke2-d3 Ra2-a1 Nc4xd6 Rc7xc3+ Kd3xc3 Ke6xd6 Kc3-d3
Ra1-f1 Kd3-e2 Rf1-h1 h3-h4 Kd6-c6 Rb4-c4+ Kc6-d6 Rc4-d4+ Kd6-c7 Rd4-c4+
Kc7-d8 Rc4-d4+ Kd8-c7) 0.00/43 18} 35. Kd3 {(Ke2-d3 Ra2-a1 Nc4xd6 Rc7xc3+
b2xc3 Ke6xd6 Rb4xb7 Ra1-a2 f2-f4 Ra2-g2 g3-g4 h5xg4 h3xg4 Rg2xg4 c3-c4
Rg4-g1 c4-c5+ Kd6-e6 Kd3-c4 g6-g5 f4xg5 f6xg5 Kc4-d4 g5-g4 Kd4-e4 Rg1-c1
Rb7-b6+ Ke6-f7 Ke4-d5 g4-g3 Rb6-b2 Rc1-d1+ Kd5-e4 Rd1-c1 Rb2-g2 Rc1xc5
Rg2xg3 Rc5-b5 Rg3-h3 Kf7-e6 Rh3-h6+ Ke6-d7 Rh6-h8 Rb5-b4+ Ke4-f5 Rb4-b5+
Kf5-f4 Rb5-b2) +0.04/43 24} Ra6 {(Ra2-a6 e3-e4 Nd6xc4 Rc3xc4 Ke6-d7 Rc4-d4+
Kd7-e6 h3-h4 Ra6-a1 Rb4-b6+ Ke6-f7 Rb6-b4 Ra1-d1+ Kd3-e3 Rd1-e1+ Ke3-d3
Re1-c1 Rd4-c4 Rc7-d7+ Kd3-e2 Rc1-h1 Rc4-c3 Rh1-d1 Rb4-b6 Rd7-d2+ Ke2-e3
Rd2-d7 Ke3-e2) 0.00/38 19} 36. Nxd6 {(Nc4xd6 Ra6xd6+ Kd3-e2 Ke6-d7 g3-g4
h5xg4 Rb4xg4 Rc7xc3 b2xc3 Rd6-c6 Ke2-d3 Rc6-d6+ Kd3-c4 Rd6-c6+ Kc4-b3 g6-g5
Rg4-d4+ Kd7-e6 h3-h4 Rc6-b6+ Kb3-c2 g5xh4 Rd4xh4 Ke6-f5 Rh4-c4 Kf5-e6
Rc4-d4 Ke6-f5 Rd4-h4 Kf5-e6 Rh4-e4+ Ke6-d7 Re4-d4+ Kd7-c6 Rd4-g4 Rb6-a6
Rg4-e4 Kc6-d7 Kc2-b3 Kd7-d6 Re4-b4 Kd6-c7 Rb4-c4+ Kc7-d6) +0.04/41 26}
Rxd6+ {(Ra6xd6+ Kd3-e2 Ke6-d7 g3-g4 h5xg4 h3xg4 Rc7xc3 b2xc3 Kd7-c6 Rb4-c4+
Kc6-d7 Rc4-b4) 0.00/39 33} 37. Ke2 {(Kd3-e2 Rc7xc3 b2xc3 Rd6-c6 Ke2-d3
Rc6-d6+ Kd3-e4 Rd6-c6 g3-g4 h5xg4 h3xg4 Rc6xc3 Rb4xb7 Rc3-c4+ Ke4-f3 g6-g5
Kf3-g3 Rc4-c3 Rb7-b1 Ke6-d6 Rb1-b5 Kd6-e6 Rb5-b4 Ke6-d5 Rb4-d4+ Kd5-e5
Rd4-a4 Rc3-b3 Kg3-f3 Rb3-b7 Ra4-d4 Rb7-c7 Rd4-e4+ Ke5-d5 Re4-a4 Rc7-c1
Ra4-d4+ Kd5-e6 Kf3-g3 Rc1-g1+ Kg3-h3 Rg1-h1+) +0.04/37 30} Rxc3 {(Rc7xc3
b2xc3 Rd6-c6 Ke2-d3 Rc6-d6+ Kd3-e4 Rd6-c6 Ke4-d3) 0.00/43 18} 38. bxc3
{(b2xc3 Rd6-c6 Ke2-d3 Rc6-a6 Rb4xb7 Ra6-a2 f2-f4 Ra2-g2 g3-g4 h5xg4 h3xg4
Rg2xg4 Rb7-b6+ Ke6-d7 Rb6-b1 g6-g5 f4xg5 Rg4xg5 Rb1-a1 Kd7-c7 Kd3-e4 Kc7-b7
Ke4-d4 Rg5-g4+ Kd4-d3 Rg4-g5 Ra1-a4 Kb7-c6 Ra4-a6+ Kc6-d7 c3-c4 Rg5-g1
Kd3-d4 Rg1-e1 Ra6-a7+ Kd7-d6 c4-c5+ Kd6-e6 Ra7-b7 Re1-d1+ Kd4-c4 Rd1-c1+
Kc4-b5 Rc1-e1 Kb5-b6 Re1xe3) +0.04/40 37} Rc6 {(Rd6-c6 Ke2-d3 Rc6-a6 Rb4xb7
Ra6-a2 Rb7-b6+ Ke6-d7 Rb6-b7+ Kd7-e6) 0.00/43 19} 39. Rxb7 {(Rb4xb7 Rc6xc3
Rb7-b6+ Ke6-d7 Ke2-f3 Rc3-c2 Rb6-b7+ Kd7-d6 Rb7-b8 Kd6-e6 Rb8-b5 Rc2-c7
h3-h4 Rc7-c1 Rb5-b8 Rc1-d1 Rb8-h8 Ke6-f7 g3-g4 h5xg4+ Kf3xg4 Rd1-h1 Rh8-h7+
Kf7-e6 Rh7-g7 Rh1-h2 Kg4-g3 Rh2-h1 Rg7-g8 Rh1-g1+ Kg3-f3 Ke6-f7 Rg8-c8
Kf7-g7 Rc8-c4 f6-f5 Rc4-b4 Rg1-c1 Kf3-g2 Rc1-c2 Kg2-g3 Rc2-c1 Rb4-b7)
+0.04/43 85} Rxc3 {(Rc6xc3 Rb7-b6+ Ke6-f5 Rb6-b5+ Kf5-e6 Rb5-b6+) 0.00/38
23} 40. Rb6+ {(Rb7-b6+ Ke6-f5 Rb6-b5+ Kf5-e6 Rb5-a5 Rc3-c4 Ke2-f3 Rc4-b4
g3-g4 h5xg4+ h3xg4 g6-g5 Ra5-a3 Rb4-b1 Kf3-g2 Rb1-c1 Ra3-b3 Ke6-f7 Kg2-f3
Rc1-c6 e3-e4 Rc6-c1 Rb3-b6 Rc1-c4 Kf3-e3 Rc4-c1 Ke3-d3 Rc1-f1 Kd3-e2 Rf1-g1
Ke2-f3 Rg1-f1 Rb6-b7 Rf1-c1 Rb7-b3 Kf7-e6 Rb3-b6+ Ke6-e5 Rb6-b5+ Ke5-e6
Rb5-f5) +0.03/39 19} Kd7 {(Ke6-d7 Ke2-f3 Rc3-c2 Rb6-b8 Kd7-e6 Rb8-b5 Ke6-f7
g3-g4 h5xg4+ h3xg4 Rc2-d2 Rb5-b4 Rd2-a2 Rb4-b5 Ra2-a4 Kf3-g3 g6-g5 Kg3-f3
Ra4-a7 Rb5-b4 Kf7-g7 Rb4-b8 Ra7-a5 Rb8-b3 f6-f5 g4xf5 Ra5xf5+ Kf3-g3 Rf5-e5
Kg3-g4 Kg7-f6 Rb3-b8 Re5-e4+ Kg4-h3 Re4-h4+ Kh3-g3 Rh4-h1 Kg3-f3 Rh1-e1
Rb8-b6+ Kf6-f5 Rb6-b5+ Kf5-g6) +0.05/41 146} 41. Kf3 {(Ke2-f3 Rc3-c2 Rb6-b5
Kd7-e8 Rb5-b8+ Ke8-f7 Rb8-b5 Rc2-d2 h3-h4 Rd2-d6 Rb5-c5 Rd6-d1 e3-e4 Rd1-b1
e4-e5 f6-f5 Kf3-f4 Rb1-b2 Kf4-f3 Rb2-b1) 0.00/32 10} Rc4 {(Rc3-c4 Rb6-b5
Kd7-e6 h3-h4 Rc4-c2 e3-e4 Rc2-c3+ Kf3-e2 Rc3-c7 Ke2-e3 Rc7-a7 Rb5-b6+
Ke6-f7 Rb6-b5 Ra7-a3+ Ke3-e2 Kf7-g7 f2-f3 Kg7-f7 Ke2-f2 Ra3-a6 Kf2-f1
Ra6-a2 Kf1-g1 Ra2-a1+ Kg1-f2 Ra1-a7 Kf2-e2 Ra7-a2+ Ke2-f1 Ra2-a4 Kf1-f2
Ra4-a3 Kf2-g2 Kf7-e6 Kg2-f2 Ra3-a2+ Kf2-g1 Ra2-a6 Kg1-f1 Ke6-f7 Kf1-f2
Ra6-a1) +0.05/41 33} 42. Ra6 {(Rb6-a6 Rc4-c5 Kf3-g2 Rc5-b5 Ra6-a8 Kd7-e6
Ra8-h8 Rb5-c5 Rh8-h7 f6-f5 Rh7-h6 Ke6-f7 Rh6-h8 Kf7-g7 Rh8-a8 Rc5-c4 Kg2-f3
Kg7-f7 Ra8-a2 Kf7-e6 Ra2-b2 Ke6-f7 Rb2-d2 Kf7-e6 Rd2-a2 Ke6-f6 Kf3-g2
Kf6-g7 Ra2-a6 Kg7-f7 Ra6-a7 Kf7-e6 Kg2-f3 Ke6-f7 Ra7-a1 Kf7-e6 Ra1-g1
Ke6-f6 Rg1-e1) +0.03/39 42} Rc5 {(Rc4-c5 Kf3-g2 Rc5-b5 Ra6-a8 Kd7-e6 Ra8-h8
Ke6-f5 Kg2-f3 e7-e5 e3-e4+ Kf5-e6 h3-h4 Rb5-b3+ Kf3-e2 f6-f5 e4xf5+ Ke6xf5
Rh8-a8 Rb3-b6 Ra8-a4 Kf5-f6 Ke2-f3 Rb6-c6 Ra4-b4 Kf6-f5 Rb4-b7 Rc6-d6
Rb7-b5 Rd6-a6 Rb5-b7 Ra6-c6 Rb7-b5 Kf5-e6 Rb5-a5 Rc6-c4 Ra5-b5 Ke6-f6)
+0.04/36 17} 43. Kg2 {(Kf3-g2 Rc5-b5 Ra6-a8 Kd7-e6 Ra8-a4 Rb5-b2 Ra4-h4
Ke6-f7 g3-g4 h5xg4 h3xg4 g6-g5 Rh4-h7+ Kf7-e6 Rh7-h1 Ke6-e5 Rh1-c1 Rb2-b3
Rc1-c5+ Ke5-d6 Rc5-c2 Kd6-e5 Kg2-f3 Ke5-e6 Kf3-g3 Ke6-d5 Rc2-c7 Kd5-d6
Rc7-c4 Kd6-e5 Kg3-f3 e7-e6 Rc4-c2 Rb3-b4 Rc2-c1 Ke5-d6 Rc1-c3 Kd6-e5)
+0.03/36 10} g5 {(g6-g5 Ra6-a8 Kd7-e6 Ra8-h8 g5-g4 Rh8-h7 Rc5-e5 Rh7-g7
Ke6-f5 Rg7-g8 Re5-a5 Rg8-g7 Ra5-a7 Rg7-g8 Ra7-a2 Rg8-g7 e7-e6 h3xg4+ h5xg4
e3-e4+ Kf5xe4 Rg7xg4+ Ke4-e5 Rg4-g7 f6-f5 Rg7-g8 Ra2-c2 g3-g4 f5xg4 Rg8xg4
Ke5-f5 Rg4-g8 Rc2-c7 Kg2-f3 Rc7-d7 Kf3-g3 Rd7-d3+ Kg3-g2) +0.06/37 26} 44.
Kf3 {(Kg2-f3 Rc5-f5+ Kf3-g2 Rf5-c5) 0.00/37 12} Rf5+ {(Rc5-f5+ Kf3-g2 g5-g4
Ra6-a4 g4xh3+ Kg2-f1 Kd7-e8 Ra4-h4 Ke8-f7 Rh4xh3 Kf7-g6 Rh3-h4 e7-e6 Rh4-e4
Kg6-f7 Re4-h4 Rf5-b5 Kf1-g2 Kf7-g6 Rh4-c4 Rb5-b2 Rc4-h4 Rb2-c2 Kg2-f3 e6-e5
Kf3-g2 Kg6-g5 Rh4-a4 Rc2-d2 Ra4-h4 Kg5-g6 Rh4-c4 Rd2-d3 Rc4-c8 Rd3-d1
Rc8-h8 Rd1-d2 Rh8-c8 Kg6-f7 Rc8-h8) +0.04/38 22} 45. Kg2 {(Kf3-g2 Rf5-c5
Kg2-f3 Rc5-f5+) 0.00/37 9} Rd5 {(Rf5-d5 Ra6-a8 Kd7-e6 Ra8-h8 g5-g4 Rh8-h6
Rd5-a5 e3-e4 Ra5-a4 Rh6xh5 Ra4xe4 h3xg4 Re4xg4 Kg2-f3 Rg4-g8 Kf3-f4 Rg8-b8
Kf4-g4 Rb8-b2 f2-f4 Rb2-b7 Rh5-h7 Rb7-b5 f4-f5+ Ke6-d7 Rh7-h2 e7-e6 Rh2-h5
Rb5-b2 Kg4-f3 Kd7-d6 Rh5-h6 Kd6-e5 f5xe6 Ke5xe6 Kf3-e3) +0.06/37 35} 46.
Kf3 {(Kg2-f3 Rd5-f5+ Kf3-g2 Rf5-c5) 0.00/39 16} Rf5+ {(Rd5-f5+ Kf3-g2 g5-g4
h3xg4 h5xg4 Ra6-a4 Rf5-g5 Kg2-f1 Kd7-d6 Ra4-e4 Rg5-g7 Re4-c4 Kd6-e5 Rc4-c5+
Ke5-e4 Rc5-c4+ Ke4-d5 Rc4-b4 f6-f5 Kf1-e2 Rg7-f7 Rb4-f4 Kd5-e5 e3-e4 e7-e6
e4xf5 e6xf5 Rf4-b4 Rf7-a7 Rb4-b6 Ra7-c7 Rb6-b8 Rc7-c3 Rb8-e8+ Ke5-d4
Re8-d8+ Kd4-e4 Rd8-e8+ Ke4-d5 Re8-f8 Kd5-e6 Rf8-e8+ Ke6-f7 Re8-a8 Rc3-b3
Ra8-a6 Rb3-b5) +0.05/44 43} 47. Kg2 {(Kf3-g2 Rf5-b5 Ra6-a8 Kd7-e6 Ra8-h8
g5-g4 Rh8-h7 Rb5-e5 h3-h4 Ke6-d6 f2-f4 Re5xe3 Rh7xh5 Re3-e2+ Kg2-g1 Re2-e3
Kg1-f2 Re3-f3+ Kf2-g2 Rf3-b3 Rh5-a5 Rb3-b2+ Kg2-f1 Rb2-b3 Kf1-f2 Rb3-b2+
Kf2-e3 Rb2-b3+ Ke3-e4 Kd6-e6 f4-f5+ Ke6-f7 Ke4-f4 Rb3-b4+ Kf4-e3 Rb4-b3+
Ke3-f4) 0.00/39 29} Rb5 {(Rf5-b5 Ra6-a8 Kd7-e6 Ra8-h8 g5-g4 Rh8-h7 Rb5-e5
h3-h4 Ke6-d6 Kg2-f1 Kd6-d5 Kf1-e1 Kd5-c6 Ke1-f1 Kc6-d7 Rh7-h8 Re5-a5 Kf1-g2
e7-e6 Kg2-f1 Kd7-e7 Rh8-h7+ Ke7-f8 f2-f4 g4xf3/ep Kf1-f2 Ra5-c5 Kf2xf3
Rc5-f5+ Kf3-e4 Rf5-e5+ Ke4-f4 Re5-a5 Rh7-b7 Ra5-c5 Kf4-e4 Kf8-e8 Ke4-f3
Rc5-f5+ Kf3-e2 Ke8-f8 Rb7-h7 Rf5-b5 Ke2-f3 Rb5-c5) +0.01/43 11} 48. Ra8
{(Ra6-a8 Kd7-e6 f2-f3 Rb5-b2+ Kg2-f1 Rb2-b1+ Kf1-e2 Rb1-b2+ Ke2-f1) 0.00/39
7} Ke6 {(Kd7-e6 Ra8-h8 g5-g4 Rh8-h7 Rb5-e5 h3-h4 Ke6-d6 Kg2-f1 Kd6-d5
Kf1-e1 Kd5-c6 Ke1-f1 Kc6-d7 Rh7-h8 e7-e6 Kf1-e2 Re5-a5 Rh8-h7+ Kd7-e8 f2-f4
Ke8-f8 Ke2-f1 Kf8-g8 Rh7-e7 Ra5-a1+ Kf1-f2 Ra1-a6 Kf2-e2 Ra6-b6 Ke2-f2
Rb6-c6 Kf2-f1 Kg8-f8 Re7-h7 Rc6-c3) +0.01/34 25} 49. Rh8 {(Ra8-h8 g5-g4
Rh8-h7 Rb5-e5 h3-h4 Ke6-d6 e3-e4 Kd6-d7 f2-f3 g4xf3+ Kg2xf3 Re5-c5 Kf3-f4
Kd7-e8 g3-g4 h5xg4 Kf4xg4 Rc5-e5 Kg4-f3 Re5-c5 Kf3-g4) 0.00/43 13} g4
{(g5-g4 Rh8-h7 Rb5-e5 h3-h4 Ke6-d6 Kg2-f1 Kd6-d5 Kf1-e1 Kd5-e6 Ke1-f1
Re5-c5 Kf1-g2 Rc5-f5 Kg2-f1 Ke6-d7 Rh7-h8 Kd7-e6 Rh8-h7) 0.00/48 9} 50. Rh7
{(Rh8-h7 Rb5-e5 h3-h4 Ke6-d6 Kg2-f1 Kd6-d5 Kf1-e1 Kd5-e6 Ke1-f1 Re5-c5
Kf1-g2 Rc5-f5 Kg2-f1 Ke6-d7 Rh7-h8 Kd7-e6 Rh8-h7) 0.00/48 41} Re5 {(Rb5-e5
h3-h4 Re5-b5 Kg2-f1 Rb5-c5 Kf1-g2 Rc5-f5 Kg2-f1 Ke6-d7 Rh7-h8 e7-e6 Rh8-h7+
Kd7-e8 Kf1-g2 Rf5-c5 Kg2-f1 Ke8-f8 f2-f4 Rc5-f5 e3-e4 Rf5-a5 Kf1-g2 Kf8-e8
Kg2-f1 Ra5-b5 Kf1-f2 Rb5-b2+ Kf2-f1 Rb2-b1+ Kf1-f2 Rb1-b5 Kf2-f1 Rb5-c5
Kf1-g2 Ke8-f8 Kg2-f2 Rc5-b5 Kf2-g2 Rb5-b2+ Kg2-f1 Rb2-b3 Kf1-g2 Rb3-b5
Kg2-f1 Kf8-g8 Rh7-e7 Rb5-b6 Kf1-g2) +0.01/47 27} 51. h4 {(h3-h4 Ke6-d7
Rh7-h8 e7-e6 Rh8-h7+ Kd7-e8 Rh7-g7 Re5-b5 Rg7-c7 Ke8-f8 f2-f4 Rb5-d5 Kg2-f1
e6-e5 Rc7-h7 e5xf4 e3xf4 Rd5-c5 Rh7-d7 Rc5-c1+ Kf1-g2 Rc1-c2+ Kg2-f1
Rc2-c1+) 0.00/47 8} Kd7 {(Ke6-d7 Rh7-h8 e7-e6 Rh8-h7+ Kd7-e8 Rh7-g7 Re5-b5
Rg7-c7 Ke8-f8 f2-f4 Rb5-d5 Kg2-f1 e6-e5 Rc7-h7 e5xf4 e3xf4 Rd5-c5 Rh7-d7
Rc5-c1+ Kf1-g2 Rc1-c2+ Kg2-f1 Rc2-c1+) 0.00/51 13} 52. Rh8 {(Rh7-h8 e7-e6
Rh8-h7+ Kd7-e8 Rh7-g7 Re5-b5 Rg7-h7 Ke8-f8 f2-f4 Rb5-c5 Kg2-f1 Kf8-g8
Rh7-e7 Rc5-c1+ Kf1-f2 Rc1-c6 Kf2-g2 f6-f5 Kg2-f2 Rc6-c2+ Kf2-f1 Rc2-c6
Kf1-f2) 0.00/53 10} e6 {(e7-e6 Rh8-h6 Kd7-e7 Rh6-h7+ Ke7-f8 Rh7-c7 Kf8-g8
Rc7-e7 Re5-e4 Re7-c7 Re4-e5) 0.00/52 52} 53. Rg8 {(Rh8-g8 Re5-b5 Rg8-g7+
Kd7-d6 Rg7-h7 Rb5-a5 Rh7-h8 Kd6-e7 Rh8-h7+ Ke7-d6) 0.00/62 7} Rb5 {(Re5-b5
Rg8-g7+ Kd7-d6 Rg7-h7 Rb5-a5 Rh7-h8 Kd6-e7 Rh8-h7+ Ke7-d6) 0.00/63 10} 54.
Rg7+ {(Rg8-g7+ Kd7-d6 Rg7-h7 Rb5-a5 Rh7-h8 Kd6-e7 Rh8-h7+ Ke7-d6) 0.00/59
21} Kd6 {(Kd7-d6 Rg7-h7 Rb5-a5 Rh7-h8 Kd6-e7 Rh8-h7+ Ke7-d6) 0.00/62 7} 55.
Rh7 {(Rg7-h7 Rb5-a5 Rh7-h8 Kd6-e7 Rh8-h7+ Ke7-d6) 0.00/64 10} Ra5 {(Rb5-a5
Rh7-h8 Kd6-e7 Rh8-h7+ Ke7-d6) 0.00/64 7} 56. Rh8 {(Rh7-h8 Kd6-e7 Rh8-h7+
Ke7-d6) 0.00/62 8} Ke7 {(Kd6-e7 Rh8-h7+ Ke7-d6 Rh7-h8) 0.00/66 10} 57. Rh7+
{(Rh8-h7+ Ke7-d6 Rh7-h8 Kd6-e7) 0.00/65 11} Kd6 {(Ke7-d6 Rh7-h8 Kd6-e7
Rh8-h7+) 0.00/69 10} 58. Rh8 {(Rh7-h8 Kd6-e7 Rh8-h7+ Ke7-d6) 0.00/68 10}
Ke7 {(Kd6-e7 Rh8-h7+ Ke7-d6) 0.00/69 7} 59. Rh7+ {(Rh8-h7+ Ke7-d6) 0.00/69
6} Kd6 {(Ke7-d6) 0.00/73 10 3-fold repetition} *[/pgn]