Norm Pollock wrote:I ran a similar 100 game experiment with slight changes. With the understanding that 100 games is not statistically significant, the result was that using a 16-move book gets +38 better Elo than using an 8-move book. Both used the same engine, Rybka 2.3.2a w32 1cpu, on an AMD 3000+ at time-control: 2' + 1", with the Fritz 9 manager.
The two ("ctg") books, 16-move and 8-move were built by me from the same database of 262,000 quality games taken from my 40H/Grand collection. Neither book had any restrictions or recommendations on which lines to use. The books each used a minimum of 3 occurrences. The two books were of the same quality, with the only difference being their lengths.
Code: Select all
Rybka 2.3.2a 32-bit-16 55.5/100 +38 elo
Rybka 2.3.2a 32-bit-8 44.5/100 -37 elo
My analysis:
Because of the short time-controls, the engine with the 8-move book used up time making many moves (about 4 on average) that turned out to be in the 16-move book. Because of this time differential for the rest of the game, the engine using the 16-move book was on occasion able to search at a higher depth and get better results. If there were bad book moves in the 16-move book, they did not occur often enough to equalize the time differential advantage.
If there were longer time-controls, then the use of the 16-move book would have less of an advantage. But with a short time-control, as used here, the result indicates that a longer book gets a better result.
Games will be made available if anyone wants to see them. The "ctg" books will also be made available if requested.
I just created two ("abk") books, a 16-moves and 12-moves were built from your database of 262,000 quality games taken from your 40H/Grand collection. Neither book had any restrictions or recommendations on which lines to use. The books each used a minimum of 3 occurrences. The two books were of the same quality, with the only difference being their lengths.
Your analysis is correct with shorter time control than 5 minutes the 16 moves book gain time and because of this time differential for the rest of the game, the engine using the 16-move book was on occasion able to search at a higher depth and get better results. If there were bad book moves in the 16-move book, they did not occur often enough to equalize the time differential advantage.
Rybka 2.3.2a w32-A with 16 moves
Rybka 2.3.2a w32-B with 12 moves
Engine Score Ry Ry S-B
1: Rybka v2.3.2a.w32-B 55.5/100 ···································································································· ==1=0==1==1=====00==1=1=0===0=11====1===1=11=1=11=1===1=====1====0=1==============00=1===110=0=1==0= 2469.7
2: Rybka v2.3.2a.w32-A 44.5/100 ==0=1==0==0=====11==0=0=1===1=00====0===0=00=0=00=0===0=====0====1=0==============11=0===001=1=0==1= ···································································································· 2469.7
100 games played / Tournament is finished
Name of the tournament: Arena tournament
Site/ Country: RUTH-07E2FB46AF, United States
Level: Blitz 5/1
Hardware: AMD Athlon(TM) XP 2000+ 1662 MHz with 992 MB Memory
Operating system: Microsoft Windows XP Home Edition Service Pack 3 (Build 2600)
PGN-File: C:\Program Files\Arena\Books\arena.pgn
Website:
E-Mail Address:
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It is very strange that I such a good result, with lines like this one 1.d4 Na6?
[Event "Arena tournament"]
[Site "RUTH-07E2FB46AF"]
[Date "2009.11.01"]
[Round "99"]
[White "Rybka v2.3.2a.w32-A"]
[Black "Rybka v2.3.2a.w32-B"]
[Result "1-0"]
[ECO "B08"]
[Opening "Pirc"]
[Variation "Classical, Spassky System, 6...d5"]
[WhiteElo "2900"]
[TimeControl "300+1"]
[Termination "adjudication"]
[PlyCount "112"]
[WhiteType "program"]
[BlackType "program"]
1. d4 Na6 2. e4 c6 3. Nf3 Nf6 {(Ng8f6 Nb1c3 b7b5 e4e5 b5b4 e5xf6 b4xc3
b2xc3 e7xf6 Bf1d3 Bf8d6)} 4. e5 {(e4e5 Nf6d5 Bf1e2 d7d6 c2c4 Nd5b4 a2a3
Qd8a5)} Nd5 {(Nf6d5 c2c4 Nd5c7 Bf1d3 g7g6 OO Bf8g7 Nb1c3 OO)} 5. c4 {(c2c4
Nd5b6 Nb1c3 d7d6 Bc1e3 d6xe5 Nf3xe5 Nb6d7 f2f4 Nd7xe5 d4xe5 Qd8xd1+ Ra1xd1
Na6b4)} Ndc7 {(Nd5c7 Bf1d3 g7g6 OO Bf8g7 Nb1c3 OO a2a3 Nc7e6)} 6. Bd3
{(Bf1d3 g7g6 Nb1c3 Bf8g7 OO OO Bc1e3 Na6b4 Bd3e4)} g6 {(g7g6 OO Bf8g7 Nb1c3
OO Bc1e3 Na6b4 Bd3e2 c6c5)} 7. Nc3 {(Nb1c3 Bf8g7 OO OO Bc1e3 Na6b4 Bd3b1
d7d5 e5xd6/ep)} Bg7 {(Bf8g7 OO OO Bc1e3 d7d6 e5xd6 e7xd6 a2a3 Nc7e6 Rf1e1)}
8. O-O {(OO OO Qd1b3 Nc7e6 Bc1e3 Qd8b6 Bd3e4 Qb6xb3)} O-O {(OO Bc1e3 d7d6
e5xd6 e7xd6 Qd1b3 Nc7e6 Ra1e1 c6c5)} 9. Be3 {(Bc1e3 d7d5 e5xd6/ep e7xd6
a2a3 Nc7e6 Qd1d2 f7f5)} d6 {(d7d6 e5xd6 e7xd6 a2a3 Nc7e6 Rf1e1 Qd8b6
Nc3a4)} 10. exd6 {(e5xd6 e7xd6 a2a3 Nc7e6 Qd1d2 f7f5 g2g3 Bc8d7 b2b4)} exd6
{(e7xd6 Rf1e1 Nc7e6 a2a3 Qd8b6 Nc3a4 Qb6c7)} 11. a3 {(a2a3 Nc7e6 Qd1d2 f7f5
g2g3 Bc8d7 b2b4 Qd8b6)} Bg4 {(Bc8g4 Bd3e2 Rf8e8 h2h3 Bg4f5 Qd1b3 c6c5)} 12.
Be2 {(Bd3e2 Rf8e8 h2h3 Bg4xf3 Be2xf3 Nc7e6 b2b4 Ne6g5 b4b5)} Re8 {(Rf8e8
h2h3 Bg4d7 Qd1b3 Bd7f5 Rf1e1 b7b6 g2g4)} 13. h3 {(h2h3 Bg4xf3 Be2xf3 Nc7e6
Qd1d2 Qd8h4 Ra1d1 Ra8d8 Bf3g4)} Bf5 {(Bg4f5 Rf1e1 d6d5 Qd1b3 Qd8d7 c4xd5
Nc7xd5 Nc3xd5 Bf5e6 Nd5b6 a7xb6 Qb3xb6 Qd7c7)} 14. Re1 {(Rf1e1 Bg7f6 Qd1b3
Ra8b8 Ra1d1 h7h5)} d5 {(d6d5 Qd1d2 d5xc4 Be2xc4 b7b5 Bc4b3 Bf5e6 Bb3c2
Nc7d5)} 15. Rc1 {(Ra1c1 d5xc4 Be2xc4 Qd8d7 Bc4b3 Bg7f6 Qd1d2 Ra8d8)} dxc4
{(d5xc4 Be2xc4 Qd8d7 Bc4b3 b7b5 Qd1e2 b5b4)} 16. Bxc4 {(Be2xc4 Bf5e6 Bc4b3
Be6xb3 Qd1xb3 Qd8d7 Rc1d1 Nc7d5)} b5 {(b7b5 Bc4d3 Bf5xd3 Qd1xd3 Qd8d7 Qd3d2
Nc7e6 d4d5)} 17. Bd3 {(Bc4d3 Bf5xd3 Qd1xd3 Nc7e6 b2b4 Qd8d7 Nc3e4)} Qd7
{(Qd8d7 Bd3c2 Ra8d8 b2b4 Re8e7 Nc3e2 Nc7d5)} 18. Bf1 {(Bd3f1 b5b4 a3xb4
Na6xb4 g2g4 Bf5e6 Nf3e5 Qd7d6)} h5 {(h7h5 Qd1d2 b5b4 Nc3a4 b4xa3 b2xa3
Nc7b5)} 19. Qd2 {(Qd1d2 Bg7f6 Be3g5 Bf6xg5 Qd2xg5 Re8xe1 Rc1xe1 Ra8e8
Re1xe8+ Qd7xe8 Nf3h4 Bf5c2)} Rad8 {(Ra8d8 Be3g5 Re8xe1 Rc1xe1 Rd8e8 Re1xe8+
Qd7xe8 Qd2e3 Qe8e6)} 20. Bg5 {(Be3g5 f7f6 Bg5e3 g6g5 b2b4 Nc7d5 Bf1d3
Bf5xd3)} Rxe1 {(Re8xe1 Rc1xe1 f7f6 Bg5e3 g6g5 Bf1d3 Rd8e8 Qd2c2 Bf5xd3)}
21. Rxe1 {(Rc1xe1)} f6 {(f7f6 Bg5e3 g6g5 Bf1d3 Rd8e8 Qd2c2 Bf5xd3 Qc2xd3
Nc7d5)} 22. Bh6 {(Bg5h6 Bg7xh6 Qd2xh6 Qd7g7 Qh6c1 Qg7f7 Nc3e4 Bf5xe4 Re1xe4
Rd8d6 Bf1d3)} Bxh6 {(Bg7xh6 Qd2xh6 Qd7g7 Qh6c1 Nc7e6 Bf1d3 Bf5xd3 Re1xe6
b5b4)} 23. Qxh6 {(Qd2xh6 Qd7g7 Qh6c1 Qg7f7 Nc3e4 Bf5xe4 Re1xe4 Rd8d6 Qc1f4
Rd6d7 Qf4c1 Qf7d5)} Qg7 {(Qd7g7 Qh6c1 Qg7f7 Nf3h4 Rd8xd4 Nh4xf5 g6xf5 Qc1e3
Qf7d7)} 24. Qc1 {(Qh6c1 Qg7f7 Nc3e4 Bf5xe4 Re1xe4 Rd8d6 a3a4 Qf7d5 Re4e1)}
Qf7 {(Qg7f7 Nf3h4 Rd8xd4 Nh4xf5 g6xf5 Qc1e3 Qf7d7 Qe3h6 Qd7f7 Bf1e2 h5h4
Re1d1)} 25. Ne4 {(Nc3e4 Bf5xe4 Re1xe4 Rd8d6 a3a4 Rd6e6 Re4xe6 Qf7xe6 a4xb5
c6xb5 Bf1d3 g6g5 Qc1c2)} Bxe4 {(Bf5xe4 Re1xe4 Rd8d6 a3a4 Rd6e6 Re4xe6
Qf7xe6 a4xb5 c6xb5 Bf1d3 g6g5)} 26. Rxe4 {(Re1xe4)} Rd6 {(Rd8d6 a3a4 Rd6e6
Re4xe6 Qf7xe6 a4xb5 c6xb5 Bf1d3 g6g5 Nf3xg5 f6xg5 Qc1xg5+ Kg8f8 Qg5xh5)}
27. a4 {(a3a4 Rd6e6 Re4xe6 Qf7xe6 a4xb5 c6xb5 Bf1d3 g6g5 Nf3xg5 f6xg5
Qc1xg5+ Kg8f8 Qg5xh5 Qe6e1+)} Re6 {(Rd6e6 Re4xe6 Qf7xe6 a4xb5 c6xb5 Bf1d3
g6g5 Qc1c2 Kg8g7 Qc2d2 Kg7g8 Qd2c3 Kg8g7 Qc3c2)} 28. Rxe6 {(Re4xe6 Qf7xe6
a4xb5 c6xb5 Bf1d3 g6g5 Nf3xg5 f6xg5 Qc1xg5+ Kg8f8 Qg5xh5 Qe6e1+ Bd3f1
Kf8e7)} Qxe6 {(Qf7xe6)} 29. axb5 {(a4xb5 c6xb5 Bf1d3 g6g5 Qc1d2 Qe6d7 Qd2c3
Kg8g7 Qc3b3 Qd7f7)} cxb5 {(c6xb5)} 30. Bd3 {(Bf1d3 g6g5 Qc1d2 Qe6d7 Qd2c3
Kg8g7 Qc3a3 Qd7e6 Kg1f1)} g5 {(g6g5 Qc1c2 Kg8g7 Bd3g6 h5h4 Bg6d3 Qe6e7)}
31. h4 {(h3h4 g5g4 Nf3h2 Kg8g7 Nh2f1 Qe6b3 Bd3c2 Qb3d5)} g4 {(g5g4 Nf3h2
Qe6d5 Qc1h6 Qd5xd4 Bd3g6 Qd4d5)} 32. Nh2 {(Nf3h2 Kg8g7 Nh2f1 Qe6b3 Bd3e4
Kg7f7 Nf1g3)} Nb4 {(Na6b4 Bd3g6 Qe6d7 Qc1h6 Nb4c6 Bg6xh5 f6f5 Qh6g6+ Kg8f8
Qg6f6+ Kf8g8)} 33. Bg6 {(Bd3g6 Qe6d7 Qc1h6 g4g3 Nh2f3 g3xf2+ Kg1xf2 Nc7e6
Bg6f5 Qd7f7 Bf5xe6)} Qd7 {(Qe6d7 Qc1h6 g4g3 Nh2f3 g3xf2+ Kg1xf2 Nc7d5 Kf2g1
a7a5 Qh6xh5 Qd7c7)} 34. Qh6 {(Qc1h6 g4g3 Nh2f3 g3xf2+ Kg1xf2 Nc7e6 Bg6f5
Qd7f7 Bf5xe6 Qf7xe6 Qh6g6+ Kg8f8)} g3 {(g4g3 Nh2f3 g3xf2+ Kg1xf2 Nc7e6
Kf2f1 Nb4d5 g2g3 Ne6c7 Bg6xh5 Qd7g7 Qh6xg7+ Kg8xg7 Kf1f2)} 35. Nf3 {(Nh2f3
g3xf2+ Kg1xf2 Nc7e6 Bg6f5 Qd7f7 Bf5xe6 Qf7xe6 Qh6g6+ Kg8f8 Nf3g5 Qe6c4)}
gxf2+ {(g3xf2+ Kg1xf2 Nc7e6 Kf2f1 Nb4d5 g2g3 Ne6c7 Bg6xh5 Qd7g7 Qh6xg7+
Kg8xg7 Kf1f2 a7a5)} 36. Kxf2 {(Kg1xf2 Nc7e6 Bg6f5 Qd7f7 Bf5xe6 Qf7xe6
Qh6g6+ Kg8f8 Nf3g5 Qe6c4 Qg6xf6+ Kf8e8)} Ne6 {(Nc7e6 Bg6f5 Qd7f7 Bf5xe6
Qf7xe6 Qh6g6+ Kg8f8 Nf3g5 Qe6c4 Qg6xf6+ Kf8e8 Kf2g3 Nb4d3)} 37. Bf5 {(Bg6f5
Qd7f7 Bf5xe6 Qf7xe6 Qh6g6+ Kg8f8 Nf3g5 Qe6c4 Qg6xf6+ Kf8e8 Kf2g3 Nb4c6)}
Qf7 {(Qd7f7 Bf5xe6 Qf7xe6 Qh6g6+ Kg8f8 Nf3g5 Qe6c4 Qg6xf6+ Kf8e8 Ng5f3
Qc4d5 Kf2g3)} 38. Bxe6 {(Bf5xe6 Qf7xe6 Qh6g6+ Kg8f8 Nf3g5 Qe6c4 Qg6xf6+
Kf8e8 Kf2g3 Nb4c6 Qf6g6+ Ke8d7 Qg6f5+ Kd7c7)} Qxe6 {(Qf7xe6 Qh6g6+ Kg8f8
Nf3g5 Qe6c4 Qg6xf6+ Kf8e8 Ng5f3 Nb4d3+ Kf2g3 a7a5 Qf6f5 Ke8d8)} 39. Qg6+
{(Qh6g6+ Kg8f8 Nf3g5 Nb4d3+ Qg6xd3 f6xg5 h4xg5 a7a6 Qd3e2 Qe6g6 Qe2f3+
Kf8e8 Qf3a8+ Ke8e7)} Kf8 {(Kg8f8)} 40. Ng5 {(Nf3g5 Nb4d3+ Qg6xd3 f6xg5
h4xg5 a7a6 Qd3e2 Qe6g6 Qe2f3+ Kf8e8 Qf3a8+ Ke8e7 Qa8b7+ Ke7f8)} Nd3+
{(Nb4d3+ Qg6xd3 f6xg5 h4xg5 a7a6 Qd3e2 Qe6g6 Qe2f3+ Kf8e7 Qf3b7+ Ke7e8
Qb7c8+ Ke8e7 Qc8c7+)} 41. Qxd3 {(Qg6xd3)} fxg5 {(f6xg5 h4xg5 a7a6 Qd3e2
Qe6g6 Qe2f3+ Kf8e7 Qf3b7+ Ke7e8 Qb7c8+ Ke8e7 Qc8c7+ Ke7e6 Qc7e5+)} 42. hxg5
{(h4xg5 b5b4 Qd3h7 Qe6g4 Qh7h8+ Kf8f7 Qh8f6+ Kf7g8 Qf6e5 Qg4h4+ Kf2g1
a7a5)} a6 {(a7a6 Qd3e3 Qe6d7 Qe3e4 Kf8g7 Qe4e5+ Kg7g6 Qe5f6+ Kg6h7 Kf2e3
Qd7d5 g5g6+ Kh7g8)} 43. Qe3 {(Qd3e3 Qe6d7 Qe3e4 Qd7d8 Qe4e5 Kf8f7 d4d5
Kf7g6 d5d6)} Qd7 {(Qe6d7 Qe3e4 Kf8g7 Kf2g3 Qd7f7 Kg3h4 b5b4 Qe4e5+ Kg7g8
Qe5b8+ Kg8g7)} 44. Qe4 {(Qe3e4 Qd7d8 Qe4e5 Kf8f7 Kf2g3 Qd8d7 Qe5f6+ Kf7g8
Qf6g6+ Kg8f8)} Qd8 {(Qd7d8 Qe4e5 Kf8f7 Kf2g3 Qd8d7 Qe5f6+ Kf7g8 Qf6g6+
Kg8f8 Qg6e4 Kf8g7 Kg3h4 Qd7f7 d4d5)} 45. Qe5 {(Qe4e5 Kf8f7 Kf2g3 Qd8d7
Qe5e4 Kf7g7 Kg3h4 Qd7f7)} Kf7 {(Kf8f7 Kf2g3 Qd8d7 Qe5f6+ Kf7g8 Qf6g6+ Kg8f8
Qg6e4 Kf8g7 Kg3h4 Qd7f7 d4d5)} 46. Kg3 {(Kf2g3 Qd8c8 Qe5e4 a6a5 Kg3h4 Qc8c1
Qe4f5+ Kf7g7)} Qd7 {(Qd8d7 Qe5e4 Kf7g7 Kg3h4 Qd7d8 Kh4xh5 Qd8h8+ Kh5g4
Qh8c8+ Qe4f5)} 47. Qe4 {(Qe5e4 Kf7g7 Kg3h4 Qd7f7 d4d5 Qf7f1 Kh4xh5 Qf1h1+
Kh5g4 Qh1d1+ Kg4h4)} Kg7 {(Kf7g7 Kg3h4 Qd7f7 d4d5 Qf7f1 Kh4xh5 Qf1h1+ Kh5g4
Qh1d1+ Kg4g3 Qd1b3+ Kg3f4)} 48. Kh4 {(Kg3h4 Qd7f7 d4d5 Qf7f1 Kh4xh5 Qf1h1+
Kh5g4 Qh1d1+ Kg4h4 Qd1d2 b2b4)} Qf7 {(Qd7f7 d4d5 Qf7f1 Kh4xh5 Qf1h1+ Kh5g4
Qh1d1+ Kg4g3 Qd1b3+ Kg3f4)} 49. Qe5+ {(Qe4e5+ Kg7g8 Qe5f6 Qf7e8 g5g6 Qe8d7
Kh4xh5 a6a5 Qf6f7+ Qd7xf7 g6xf7+ Kg8g7 g2g4)} Kg8 {(Kg7g8 Qe5f6 Qf7d7
Kh4xh5 a6a5 g5g6 a5a4 Qf6f7+ Qd7xf7 g6xf7+ Kg8xf7 g2g4 Kf7e6 g4g5)} 50. Qf6
{(Qe5f6 Qf7d7 Kh4xh5 Qd7h7+ Qf6h6 Qh7d7 Qh6g6+ Kg8h8 Qg6xa6 Qd7c7 Qa6f6+
Kh8g8 Qf6e6+ Kg8f8)} Qd7 {(Qf7d7 Kh4xh5 Qd7h7+ Qf6h6 Qh7d7 Qh6xa6 Kg8f8
Qa6h6+ Kf8g8 Qh6g6+ Kg8f8 Qg6f6+ Kf8g8 g5g6)} 51. Kxh5 {(Kh4xh5 Qd7h7+
Qf6h6 Qh7d7 Qh6xa6 Qd7h7+ Qa6h6 Qh7d7 Qh6g6+ Kg8f8 Qg6f6+ Kf8g8 g5g6 b5b4)}
Qh7+ {(Qd7h7+ Qf6h6 Qh7d7 Qh6xa6 Kg8f8 Qa6h6+ Kf8g8 Qh6g6+ Kg8f8 Qg6f6+
Kf8g8 g5g6)} 52. Qh6 {(Qf6h6)} Qd7 {(Qh7d7 Qh6xa6 Kg8f8 Qa6h6+ Kf8g8 Qh6g6+
Kg8f8 Qg6f6+ Kf8g8 g5g6)} 53. Qxa6 {(Qh6xa6 Qd7h7+ Qa6h6 Qh7d7 Qh6g6+ Kg8f8
Qg6f6+ Kf8g8 g5g6)} Kf8 {(Kg8f8 Qa6h6+ Kf8g8 Qh6g6+ Kg8f8 Qg6f6+ Kf8g8 g5g6
b5b4 Kh5h6 Qd7c7 Qf6e6+)} 54. Qf6+ {(Qa6f6+ Kf8g8 g5g6 Qd7c7 Qf6e6+ Kg8f8
Qe6f5+ Kf8g8 Qf5d5+ Kg8h8 Qd5e5+ Qc7xe5+ d4xe5 Kh8g7)} Kg8 {(Kf8g8 g5g6
Qd7e8 Qf6e5 Qe8f8 Qe5e6+ Kg8g7 Qe6d7+ Kg7f6 Qd7c6+ Kf6e7 Qc6c5+ Ke7e8
Qc5xb5+)} 55. g6 {(g5g6 Qd7e8 Qf6e5 Qe8f8 Qe5e6+ Kg8g7 Qe6d7+ Kg7f6 Qd7c6+
Kf6e7 Qc6c5+ Ke7e8 Qc5xb5+ Ke8d8)} Qe8 {(Qd7e8 Qf6e5 Qe8f8 Qe5e6+ Kg8g7
Qe6d7+ Kg7f6 Qd7c6+ Kf6e7 Qc6c5+ Ke7e8 Qc5xb5+ Ke8d8 Qb5b8+)} 56. Qe5
{(Qf6e5 Qe8f8 Qe5e6+ Kg8g7 Qe6d7+ Kg7f6 Qd7c6+ Kf6e7 Qc6c5+ Ke7e8 Qc5xb5+
Ke8d8 Qb5b8+ Kd8e7)} Qf8 {(Qe8f8 Qe5e6+ Kg8g7 Qe6d7+ Kg7f6 Qd7c6+ Kf6e7
Qc6c5+ Ke7e8 Qc5xb5+ Ke8d8 Qb5b8+ Kd8e7 Qb8b4+)} 57. ... {1-0 Arena
Adjudication} 1-0
[Event "Arena tournament"]
[Site "RUTH-07E2FB46AF"]
[Date "2009.11.01"]
[Round "100"]
[White "Rybka v2.3.2a.w32-B"]
[Black "Rybka v2.3.2a.w32-A"]
[Result "1/2-1/2"]
[BlackElo "2900"]
[ECO "D35"]
[Opening "QGD"]
[Variation "Exchange, 4...Nxd5"]
[TimeControl "300+1"]
[Termination "normal"]
[PlyCount "150"]
[WhiteType "program"]
[BlackType "program"]
1. d4 d5 2. e3 Nf6 3. c4 Nc6 {(Nb8c6 Nb1c3 Bc8f5 Ng1f3 e7e6 c4xd5 Nf6xd5
Qd1b3 Bf8b4)} 4. cxd5 {(c4xd5 Nf6xd5 Ng1f3 Bc8g4 Qd1b3 Qd8d6 Nb1c3 OOO
Nc3xd5 Qd6xd5 Qb3xd5 Rd8xd5 Bf1c4)} Nxd5 {(Nf6xd5 Ng1f3 e7e6 Nb1c3 Bf8d6
Bf1c4 OO OO Nd5xc3)} 5. Nf3 {(Ng1f3 e7e6 Nb1c3 Bf8b4 Bc1d2 OO Bf1b5 Bb4d6
OO)} e6 {(e7e6 Nb1c3 Bf8d6 e3e4 Nd5xc3 b2xc3 OO Bf1d3 f7f6 OO)} 6. Nc3
{(Nb1c3 Bf8d6 e3e4 Nd5xc3 b2xc3 f7f6 Bf1d3 OO OO)} Bd6 {(Bf8d6 e3e4 Nd5xc3
b2xc3 f7f6 Bf1d3 OO OO Bc8d7)} 7. e4 {(e3e4 Nd5xc3 b2xc3 f7f6 Bf1d3 OO OO
Bc8d7 Ra1b1)} Nxc3 {(Nd5xc3 b2xc3 OO Bf1d3 b7b6 OO Bc8b7 Ra1b1 Qd8d7 e4e5)}
8. bxc3 {(b2xc3)} f6 {(f7f6 Bf1d3 OO Qd1c2 e6e5 d4d5 Nc6a5 OO Bc8d7)} 9.
Bd3 {(Bf1d3 OO OO Qd8e8 Ra1b1 a7a6 Bc1e3 Qe8h5 h2h3)} O-O {(OO Qd1c2 e6e5
d4d5 Nc6a5 OO Bc8d7 Bc1e3)} 10. O-O {(OO Qd8e8 Ra1b1 a7a6 h2h3 Ra8b8 Rf1e1
Qe8h5 d4d5)} Qe8 {(Qd8e8 Ra1b1 a7a6 Bc1e3 b7b6 Rf1e1 Bc8b7)} 11. Rb1
{(Ra1b1 a7a6 h2h3 Ra8b8 Rf1e1 Qe8h5 d4d5 Nc6e7)} a6 {(a7a6 Bc1e3 b7b6 Nf3d2
Nc6a5 e4e5 f6xe5 Nd2e4)} 12. h3 {(h2h3 Ra8b8 Rf1e1 Qe8h5 c3c4 b7b6 c4c5)}
Qh5 {(Qe8h5 Bc1e3 Ra8b8 c3c4 b7b6 Bd3e2 Qh5a5)} 13. c4 {(c3c4 Bd6e7 c4c5
Rf8d8 Bc1e3 a6a5 Qd1b3 Qh5g6 a2a3)} Rd8 {(Rf8d8 c4c5 Bd6e7 Bc1e3 a6a5 Qd1b3
Qh5f7 a2a3)} 14. c5 {(c4c5 Bd6e7 Bc1e3 a6a5 a2a3 a5a4 Qd1c2 Nc6a5 Qc2c3)}
Be7 {(Bd6e7 Bc1e3 Ra8b8 Qd1c2 Bc8d7 Qc2c3 b7b5 c5xb6/ep)} 15. Be3 {(Bc1e3
Ra8b8 Qd1c2 Bc8d7 Bd3e2 Qh5f7 Be3f4 Rd8c8)} Rb8 {(Ra8b8 Qd1c2 Bc8d7 Bd3c4
Kg8h8 Qc2c3 Qh5g6 e4e5)} 16. Qc2 {(Qd1c2 Bc8d7 Bd3e2 b7b5 c5xb6/ep Rb8xb6
Be3f4 Nc6b4)} Bd7 {(Bc8d7 Bd3e2 b7b5 c5xb6/ep c7xb6 Be3f4 Nc6b4 Qc2d2)} 17.
Be2 {(Bd3e2 b7b5 c5xb6/ep Rb8xb6 Be3f4 Qh5g6 Bf4xc7 Rb6xb1 Qc2xb1 Rd8c8)}
Qg6 {(Qh5g6 Be3f4 Rd8c8 Qc2d3 Nc6d8 Qd3e3 Bd7c6 d4d5)} 18. Bf4 {(Be3f4
Rd8c8 Be2c4 Nc6a5 Bc4d3 b7b5)} Rdc8 {(Rd8c8 Qc2d3 Nc6d8 Qd3e3 Bd7c6 d4d5
e6e5)} 19. Qd3 {(Qc2d3 e6e5 d4xe5 Bd7e6 Qd3e3 Be6xa2 Rb1d1 b7b6)} a5 {(a6a5
a2a3 Nc6d8 Qd3c2 Nd8c6 Be2d3 Qg6f7 Bd3c4 b7b5 c5xb6/ep)} 20. Qe3 {(Qd3e3
Qg6f7 Qe3d2 g7g5 Bf4g3 h7h5 Be2c4)} Kh8 {(Kg8h8 a2a3 a5a4 Rf1d1 Kh8g8
Be2d3)} 21. Rfc1 {(Rf1c1 f6f5 e4xf5 Qg6xf5 Be2d3 Qf5d5 a2a3 Be7f6)} f5
{(f6f5 e4xf5 Qg6xf5 Be2d3 Qf5d5 Rb1b2 Be7f6)} 22. exf5 {(e4xf5 Qg6xf5 Be2d3
Qf5d5 Rb1b3 Be7f6 Bd3e4 Qd5h5)} Qxf5 {(Qg6xf5 Be2d3 Qf5h5 Rb1b5 Be7f6 Rc1b1
Qh5d5)} 23. Bd3 {(Be2d3 Qf5h5 Rb1b5 Be7f6 a2a3 Qh5d5 Bd3e4)} Qh5 {(Qf5h5
Rb1b5 Be7f6 Bd3c4 Qh5f5 g2g4)} 24. Rb5 {(Rb1b5 Be7f6 a2a3 Qh5d5 Bd3e4 Qd5a2
Rc1b1 Nc6b4)} Bf6 {(Be7f6 Bd3c4 Qh5f5 g2g4 Qf5g6 Bc4d3)} 25. a3 {(a2a3
Qh5d5 Bd3e4 Qd5a2 Rc1b1 Nc6b4 Rb5xa5)} Be8 {(Bd7e8 Rc1b1 Qh5d5 Bd3e4 Qd5c4
Qe3b3 Qc4xb3)} 26. Be2 {(Bd3e2 Nc6xd4 Nf3xd4 Bf6xd4 Qe3d2 Bd4xf2+ Kg1xf2
Qh5f7 c5c6 Be8xc6 Rb5xa5 Rc8f8)} Qd5 {(Qh5d5 Be2c4 Qd5d8 Qe3xe6 Be8h5 d4d5
Bh5xf3 d5xc6)} 27. Bc4 {(Be2c4 Qd5d8 Qe3xe6 Be8h5 d4d5)} Qd8 {(Qd5d8 Qe3xe6
Be8d7 Qe6e3 Qd8f8 Qe3d2 Qf8e8 Rc1e1 Qe8g6)} 28. Qxe6 {(Qe3xe6 Be8d7 Qe6e4
Qd8f8 Bc4d3 g7g6 d4d5 Rc8e8)} Bh5 {(Be8h5 g2g4 Bh5g6 d4d5 Nc6d4 Nf3xd4
Bf6xd4 Rc1d1 Bd4f6)} 29. g4 {(g2g4 Bh5g6 d4d5 Nc6d4 Nf3xd4 Bf6xd4 Rc1d1
Bd4c3 Qe6e3)} Bg6 {(Bh5g6 d4d5 Nc6d4 Nf3xd4 Bf6xd4 Rc1d1 Bd4f6 Bc4d3 Bg6xd3
Rd1xd3 a5a4)} 30. d5 {(d4d5 Nc6d4 Nf3xd4 Bf6xd4 Rc1d1 c7c6 d5xc6 Bd4xf2+
Kg1xf2 Qd8xd1 Rb5xb7 Qd1d4+ Qe6e3)} Nd4 {(Nc6d4 Nf3xd4 Bf6xd4 Rc1d1 c7c6
d5xc6 Bd4xf2+ Kg1xf2 Qd8xd1 Rb5xb7 Qd1d4+ Qe6e3 Qd4xe3+ Bf4xe3)} 31. Nxd4
{(Nf3xd4 Bf6xd4 Rc1d1 Bd4xf2+ Kg1xf2 Qd8h4+ Kf2g2 Rc8e8 Bf4g3 Qh4d8 Bg3xc7
Qd8xc7 Qe6d6)} Bxd4 {(Bf6xd4)} 32. Rd1 {(Rc1d1 Bd4xf2+ Kg1xf2 Qd8h4+ Kf2g2
Rc8e8 Bf4g3 Qh4d8 Bg3xc7 Qd8xc7 Qe6d6 Qc7xd6 c5xd6 b7b6)} Bxf2+ {(Bd4xf2+
Kg1xf2 Qd8h4+ Kf2g2 Rc8e8 Bf4g3 Qh4d8 Bg3xc7 Qd8xc7 Qe6d6 Qc7xd6 c5xd6
Rb8d8 Rb5xb7)} 33. Kxf2 {(Kg1xf2 Qd8h4+ Kf2g2 Rc8e8 Bf4g3 Qh4d8 Bg3xc7
Qd8xc7 Qe6d6 Qc7xd6 c5xd6 b7b6 d6d7 Re8d8)} Qh4+ {(Qd8h4+)} 34. Kg2 {(Kf2g2
Rc8e8 Bf4g3 Qh4d8 Bg3xc7 Qd8xc7 Qe6d6 Qc7xd6 c5xd6 b7b6 d6d7 Re8d8 d5d6
Bg6e4+)} Re8 {(Rc8e8 Bf4g3 Qh4g5 Qe6d7 Re8e7 Rb5xb7 Re7xd7 Rb7xb8+ Rd7d8
Rb8xd8+ Qg5xd8 d5d6 c7xd6)} 35. Bg3 {(Bf4g3 Qh4d8 Bg3xc7 Qd8xc7 Qe6d6
Qc7xd6 c5xd6 b7b6 d6d7 Re8d8 d5d6 Bg6e4+ Kg2g3 Be4c6)} Qg5 {(Qh4g5 Qe6d7
Re8e7 Rb5xb7 Re7xd7 Rb7xb8+ Rd7d8 Rb8xd8+ Qg5xd8 d5d6 c7xd6 c5xd6 Bg6e4+
Kg2h2)} 36. Qd7 {(Qe6d7 Re8e7 Rb5xb7 Re7xd7 Rb7xb8+ Rd7d8 Rb8xd8+ Qg5xd8
d5d6 c7xd6 c5xd6 Bg6e8 Rd1f1 Be8c6+)} Re7 {(Re8e7 Rb5xb7 Re7xd7 Rb7xb8+
Rd7d8 Bg3f4 Qg5f6 Rb8xd8+ Qf6xd8 d5d6 c7xd6 Rd1xd6 Qd8e7)} 37. Rxb7
{(Rb5xb7 Re7xd7 Rb7xb8+ Rd7d8 Bg3f4 Qg5e7 Rb8xd8+ Qe7xd8 d5d6 c7xd6 c5xd6
Qd8d7 Rd1c1 h7h5)} Rxd7 {(Re7xd7 Rb7xb8+ Rd7d8 Bg3f4 Qg5f6 Rb8xd8+ Qf6xd8
d5d6 c7xd6 Rd1xd6 Qd8e7 c5c6 Qe7e4+ Kg2g1)} 38. Rxb8+ {(Rb7xb8+)} Rd8
{(Rd7d8)} 39. Bf4 {(Bg3f4 Qg5e7 Rb8xd8+ Qe7xd8 d5d6 c7xd6 c5xd6 Qd8d7 Rd1c1
h7h5 Kg2g3)} Qf6 {(Qg5f6 Rb8xd8+ Qf6xd8 d5d6 c7xd6 c5xd6 Qd8d7 Rd1c1 h7h5
Kg2g3 h5xg4 h3xg4 Bg6f7)} 40. Rxd8+ {(Rb8xd8+ Qf6xd8 d5d6 c7xd6 c5xd6 Qd8d7
Rd1c1 h7h5 Kg2g3 h5xg4 h3xg4 Bg6f7 Bc4a6)} Qxd8 {(Qf6xd8)} 41. d6 {(d5d6
c7xd6 c5xd6 Qd8d7 Rd1c1 h7h5 Kg2g3 h5xg4 h3xg4 Bg6f7 Bc4a6 Qd7a4)} cxd6
{(c7xd6 c5xd6 Qd8d7 Rd1c1 h7h5 Kg2g3 h5xg4 h3xg4 Bg6f7)} 42. cxd6 {(c5xd6
Qd8d7 Rd1c1 h7h5 Kg2g3 h5xg4 h3xg4 Bg6f7 Bc4a6 Qd7a4)} Qd7 {(Qd8d7 Rd1c1
Bg6e4+ Kg2g3 Qd7a4 Bc4d3 Be4b7 Bf4e5)} 43. Rc1 {(Rd1c1 h7h5 Bc4e2 Qd7b7+
Kg2f2 h5xg4 Be2xg4 Qb7b2+ Kf2g3 Qb2xa3+ Kg3h4 Kh8h7)} h5 {(h7h5 Kg2g3 Qd7a4
g4xh5 Qa4xa3+ Kg3g4 Bg6e4 Bc4e6)} 44. Be2 {(Bc4e2 Qd7b7+ Kg2f2 Qb7b6+ Kf2f1
Qb6d4 Rc1c4 Qd4d5 Rc4c7)} Qb7+ {(Qd7b7+ Kg2g3 h5h4+ Kg3f2 Qb7b2 Kf2e1)} 45.
Kf2 {(Kg2f2 Qb7b6+ Kf2f1 Qb6d4 Rc1c4 Qd4d5 Rc4c7 Qd5d4)} h4 {(h5h4 Rc1c7
Qb7b6+ Kf2f1 Qb6b1+ Rc7c1 Qb1b7 Kf1f2 Qb7b2 Kf2e1)} 46. Rc7 {(Rc1c7 Qb7b6+
Kf2f1 Qb6b1+ Rc7c1 Qb1e4 Rc1c8+ Kh8h7)} Qb6+ {(Qb7b6+ Kf2f1 Qb6b1+ Rc7c1
Qb1b7 Rc1c3 Qb7h1+ Kf1f2 Qh1d5 Rc3c4 Bg6d3 Be2xd3 Qd5xd3)} 47. Kf1 {(Kf2f1
Qb6b1+ Rc7c1 Qb1e4 Rc1c4 Qe4h1+ Kf1f2 Qh1d5 Kf2e3 Kh8g8 Rc4c8+ Kg8h7
Rc8c4)} Qb1+ {(Qb6b1+ Rc7c1 Qb1b7 Rc1c3 Qb7h1+ Kf1f2 Qh1d5 Rc3c4 Bg6d3
Be2xd3 Qd5xd3 Rc4c7 Qd3d4+ Kf2f3)} 48. Rc1 {(Rc7c1 Qb1e4 Rc1c4 Qe4h1+ Kf1f2
Qh1d5 Kf2e3 Qd5e6+ Ke3d2 Qe6d5+ Kd2e3 Qd5e6+ Ke3d2 Qe6d5+)} Qb7 {(Qb1b7
Rc1c3 Qb7h1+ Kf1f2 Qh1d5 Rc3c4 Bg6d3 Be2xd3 Qd5xd3 Rc4c7 Qd3d4+ Kf2f3
Qd4d3+ Kf3f2)} 49. Rc3 {(Rc1c3 Qb7h1+ Kf1f2 Qh1d5 Bf4h2 Qd5d4+ Rc3e3 Bg6e4
Be2f3 Be4xf3 Kf2xf3 Qd4d5+ Kf3f2)} Qh1+ {(Qb7h1+ Kf1f2 Qh1d5 Rc3c8+ Kh8h7
Be2c4 Qd5d4+ Bf4e3 Qd4xd6 Bc4g8+ Kh7h8 Bg8c4+ Kh8h7 Bc4g8+)} 50. Kf2
{(Kf1f2)} Qd5 {(Qh1d5 Rc3c8+ Kh8h7 Be2c4 Qd5d4+ Bf4e3 Qd4xd6 Bc4g8+ Kh7h8
Bg8c4+ Kh8h7 Bc4g8+ Kh7h8 Bg8c4+)} 51. Bh2 {(Bf4h2 Qd5d4+ Rc3e3 Bg6e4 Bh2f4
Kh8g8 Be2b5 Qd4b2+ Bb5e2 Be4c6 Bf4e5 Qb2c2)} Qd4+ {(Qd5d4+ Rc3e3 Bg6e4
Bh2f4 Kh8g8 d6d7 Be4c6 Bf4g5 Qd4xd7 Bg5xh4 Qd7d5)} 52. Re3 {(Rc3e3)} Be4
{(Bg6e4 Bh2f4 Kh8g8 Be2b5 Qd4b2+ Bb5e2 Qb2d4 Be2b5 Qd4b2+ Bb5e2 Qb2d4 Be2b5
Qd4b2+ Bb5e2)} 53. Bf4 {(Bh2f4 Kh8g8 Be2b5 Qd4b2+ Bb5e2 Be4c6 Bf4e5 Qb2c2
Re3c3 Qc2e4 Rc3e3)} Kg8 {(Kh8g8 Be2b5 Qd4b2+ Bb5e2 Be4c6 Bf4e5 Qb2a2 Kf2e1
Kg8f8 Re3c3)} 54. Bb5 {(Be2b5 Qd4b2+ Bb5e2 Be4c6 Bf4e5 Qb2c2 Re3c3 Qc2e4
Rc3e3 Qe4g2+ Kf2e1 Kg8f8)} Qb2+ {(Qd4b2+ Bb5e2 Be4c6 Bf4e5 Qb2a2 Kf2e1
Kg8f8 Re3c3 Qa2d5 Rc3e3)} 55. Be2 {(Bb5e2 Be4c6 Bf4e5 Qb2c2 Kf2e1 Qc2b1+
Ke1d2 Qb1a2+ Kd2e1 Kg8f8 Re3d3 Qa2e6 Rd3e3 Qe6f7)} Bc6 {(Be4c6 Bf4e5 Qb2a2
Kf2e1 Kg8f8 Re3c3 Qa2d5 Rc3e3 Qd5g2 Ke1d1)} 56. Be5 {(Bf4e5 Qb2c2 Kf2e1
Qc2b1+ Ke1d2 Qb1a2+ Kd2e1 Kg8f8 Re3d3 Qa2e6 Rd3e3 Qe6f7 Re3c3 Qf7d5)} Qd2
{(Qb2d2 Re3d3 Qd2c2 Rd3c3 Qc2e4 Rc3e3 Qe4g2+ Kf2e1 Kg8f8 Ke1d1 Kf8f7)} 57.
Rd3 {(Re3d3 Qd2c2 Rd3e3 Kg8f7 Re3c3 Qc2e4 Rc3e3 Qe4g2+ Kf2e1 Kf7f8 Ke1d1
Kf8f7)} Qc2 {(Qd2c2 Rd3c3 Qc2e4 Rc3e3 Qe4g2+ Kf2e1 Kg8f8 Ke1d1 Qg2d5+ Kd1e1
Qd5g2 Ke1d1 Qg2d5+ Kd1e1)} 58. Re3 {(Rd3e3 Kg8f7 Kf2e1 Qc2c1+ Ke1f2 Qc1c5
Be2d3 Kf7f8 Bd3f5 Qc5c1)} Kf8 {(Kg8f8 Re3c3 Qc2e4 Rc3f3+ Kf8g8 Rf3e3 Qe4g2+
Kf2e1 Kg8f8 Ke1d1 Qg2d5+ Kd1e1 Qd5g2 Ke1d1)} 59. Rc3 {(Re3c3 Qc2e4 Rc3f3+
Kf8g8 Rf3e3 Qe4g2+ Kf2e1 Kg8f8 Ke1d1 a5a4 Kd1e1 Qg2d5 Be2f3 Qd5c5)} Qe4
{(Qc2e4 Rc3f3+ Kf8g8 Rf3e3 Qe4g2+ Kf2e1 Kg8f8 Ke1d1 Qg2d5+ Kd1e1 Qd5g2
Ke1d1 Qg2d5+ Kd1e1)} 60. Rf3+ {(Rc3f3+ Kf8g8 Rf3e3 Qe4g2+ Kf2e1 Kg8f8 Ke1d1
a5a4 Be5c3 Qg2d5+ Kd1e1 g7g5 Bc3b4)} Kg8 {(Kf8g8 Rf3e3 Qe4g2+ Kf2e1 Kg8f8
Ke1d1 Qg2d5+ Kd1e1 Qd5g2 Ke1d1 Qg2d5+ Kd1e1 Qd5g2 Ke1d1)} 61. Re3 {(Rf3e3
Qe4g2+ Kf2e1 Kg8f8 Ke1d1 Qg2d5+ Kd1e1 g7g5 Ke1f2 Qd5g2+ Kf2e1 a5a4 Be2d3
Qg2h1+)} Qg2+ {(Qe4g2+ Kf2e1 Kg8f8 Be2c4 Qg2c2 Be5c3 Qc2c1+ Ke1f2 Qc1h1
Bc3e5 a5a4)} 62. Ke1 {(Kf2e1)} Kf8 {(Kg8f8 Be2c4 Qg2c2 Be5c3 Qc2c1+ Ke1f2
Qc1h1 Bc3e5 a5a4 Bc4d3 Qh1d5)} 63. Kd1 {(Ke1d1 Qg2d5+ Kd1e1 g7g5 Ke1f2 a5a4
Kf2e1 Kf8f7 Be2d3 Qd5g2 Be5d4)} Qd5+ {(Qg2d5+ Kd1e1 Qd5c5 Ke1d2 Qc5d5+
Kd2c3 Qd5a2 Kc3d4 Qa2d2+ Be2d3 Qd2b2+)} 64. Ke1 {(Kd1e1 g7g5 Ke1f2 a5a4
Kf2e1 Kf8f7 Ke1f2 Qd5g2+ Kf2e1 Qg2h1+ Ke1d2 Kf7e6)} Qc5 {(Qd5c5 Ke1d2 g7g5
Be2a6 Qc5d5+ Kd2c3 Qd5d1 Ba6c4 Qd1a4)} 65. Kf2 {(Ke1f2 Kf8f7 Be2d3 g7g5
Bd3f5 Qc5d5 Bf5d3 Qd5a2+ Kf2e1 Qa2d5 Ke1f2 Qd5a2+ Kf2e1 Qa2d5)} g5 {(g7g5
Be2f1 Qc5c2+ Bf1e2 Bc6b5 Be5f6 Bb5xe2 Re3xe2 Qc2c5+ Re2e3)} 66. Ba6 {(Be2a6
Bc6b5 Ba6xb5 Qc5xb5 Be5f6 Qb5d5 Bf6d8 a5a4 Bd8c7)} Bb5 {(Bc6b5 Ba6xb5
Qc5xb5 Be5f6 Qb5d5 Bf6d8 Kf8f7 Bd8c7 Qd5c5 Kf2f3)} 67. Bxb5 {(Ba6xb5 Qc5xb5
Be5f6 Qb5d5 d6d7 Qd5d2+ Kf2f3 Qd2xd7 Bf6xg5 Qd7d5+ Kf3f4 Qd5f7+ Kf4e5
Qf7c7+)} Qxb5 {(Qc5xb5 Be5f6 Kf8g8 d6d7 Qb5xd7 Bf6xg5 Qd7d2+ Kf2f1 Qd2d1+
Kf1f2 Qd1c2+ Kf2f3 Qc2h2 Kf3e4)} 68. Bf6 {(Be5f6 Qb5d5 d6d7 Qd5d2+ Kf2f3
Qd2xd7 Bf6xg5 Qd7d5+ Kf3f4 Qd5f7+ Kf4e5 Qf7c7+ Ke5d5 Qc7b6)} Kg8 {(Kf8g8
d6d7 Qb5xd7 Bf6xg5 Qd7d2+ Kf2f1 Qd2d1+ Kf1f2 Qd1c2+ Kf2f3 Qc2h2 Kf3e4
Qh2g2+ Re3f3)} 69. Re7 {(Re3e7 Qb5c6 a3a4 Qc6b6+ Kf2e2 Qb6a6+ Ke2f2 Qa6xd6
Re7g7+ Kg8f8 Bf6e7+ Qd6xe7 Rg7xe7 Kf8xe7)} Qc5+ {(Qb5c5+ Kf2e2 Qc5c2+ Ke2e3
Qc2b3+ Ke3e4 Qb3xh3 d6d7 Qh3xg4+ Ke4e5 Qg4f4+ Ke5e6 Qf4g4+ Ke6e5)} 70. Ke2
{(Kf2e2 Qc5c2+ Ke2e1 Qc2b1+ Ke1d2 Qb1a2+ Kd2e1 Qa2b1+ Ke1d2 Qb1a2+ Kd2e1
Qa2b1+ Ke1d2 Qb1a2+)} Qc2+ {(Qc5c2+ Ke2e3 Qc2b3+ Ke3e4 Qb3xh3 d6d7 Qh3xg4+
Ke4e5 Qg4f4+ Ke5e6 Qf4g4+ Ke6e5 Qg4f4+ Ke5e6)} 71. Ke1 {(Ke2e1 Qc2b1+ Ke1d2
Qb1a2+ Kd2e1 Qa2b1+ Ke1d2 Qb1a2+ Kd2e1 Qa2b1+ Ke1d2 Qb1a2+ Kd2e1 Qa2b1+)}
Qb1+ {(Qc2b1+ Ke1f2 Qb1a2+ Kf2e1 Qa2xa3 d6d7 Qa3g3+ Ke1d2 Qg3g2+ Kd2c1
Qg2f1+ Kc1c2 Qf1g2+ Kc2b3)} 72. Kd2 {(Ke1d2 Qb1a2+ Kd2e1 Qa2b1+ Ke1d2
Qb1a2+ Kd2e1 Qa2b1+ Ke1d2 Qb1a2+ Kd2e1 Qa2b1+ Ke1d2 Qb1a2+)} Qa2+ {(Qb1a2+
Kd2e1 Qa2b1+ Ke1f2 Qb1a2+ Kf2e1 Qa2b1+ Ke1f2 Qb1a2+ Kf2e1 Qa2b1+ Ke1f2
Qb1a2+ Kf2e1)} 73. Ke1 {(Kd2e1 Qa2b1+ Ke1d2 Qb1a2+ Kd2e1 Qa2b1+ Ke1d2
Qb1a2+ Kd2e1 Qa2b1+ Ke1d2 Qb1a2+ Kd2e1 Qa2b1+)} Qb1+ {(Qa2b1+ Ke1f2 Qb1a2+
Kf2e1 Qa2b1+ Ke1f2 Qb1a2+ Kf2e1 Qa2b1+ Ke1f2 Qb1a2+ Kf2e1 Qa2b1+ Ke1f2)}
74. Kd2 {(Ke1d2 Qb1a2+ Kd2e1 Qa2b1+ Ke1d2 Qb1a2+ Kd2e1 Qa2b1+ Ke1d2 Qb1a2+
Kd2e1 Qa2b1+ Ke1d2 Qb1a2+)} Qa2+ {(Qb1a2+ Kd2e1 Qa2b1+ Ke1f2 Qb1a2+ Kf2e1
Qa2b1+ Ke1f2 Qb1a2+ Kf2e1 Qa2b1+ Ke1f2 Qb1a2+ Kf2e1)} 75. Ke1 {(Kd2e1
Qa2b1+ Ke1d2 Qb1a2+ Kd2e1 Qa2b1+ Ke1d2 Qb1a2+ Kd2e1 Qa2b1+ Ke1d2 Qb1a2+
Kd2e1 Qa2b1+)} Qb1+ {(Qa2b1+ Ke1f2 Qb1a2+ Kf2e1 Qa2b1+ Ke1f2 Qb1a2+ Kf2e1
Qa2b1+ Ke1f2 Qb1a2+ Kf2e1 Qa2b1+ Ke1f2) 3-fold repetition} 1/2-1/2