Arasan games from WCRCC

[jdart]

[pgn]
[Event "7th Annual WCRCC"]
[Site "?"]
[Date "2013.07.20"]
[Round "1"]
[White "thebaron"]
[Black "Arasan 16.0"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "2606"]
[BlackElo "2433"]
[TimeControl "1500+4"]

1. d4 d5 2. Bf4 Nf6 3. e3 c5 4. Nd2 e6 5. Ngf3 Nc6 6. c3 Bd6 7. Bg3
O-O 8. Bd3 b6 9. Ne5 Bb7 10. f4 Ne7 11. Qf3 Nf5 12. Bf2 Be7 13. O-O
Qc7 14. Rad1 Rad8 15. Qh3 Ne4 16. g4 Nfd6 17. g5 Nf5 18. Qg2 Nxd2
19. Rxd2 c4 20. Bc2 Qb8 21. Qh3 Qc8 22. Bh4 Rfe8 23. Re2 g6 24. Bg3
Bf8 25. Ng4 Bg7 26. Nf6+ Bxf6 27. gxf6 Rd6 28. Bh4 Kf8 29. Rg2 h5
30. Rg5 Red8 31. Ra1 Qc6 32. Bf2 Ke8 33. Re1 Qb5 34. Rb1 Kd7 35. Qf3
Kc8 36. Qe2 Kb8 37. Qe1 Rc8 38. h3 Rdd8 39. Kh2 Rh8 40. Bh4 Qd7
41. Ra1 Ka8 42. Rg1 Qb5 43. Rb1 Qd7 44. Bd1 Nd6 45. Rg5 Qc7 46. Re5
Nf5 47. Bc2 Qd7 48. Bg5 h4 49. Qf2 Ng3 50. Kg2 Qd8 51. Qf3 Bc6
52. Qd1 Nh5 53. Qe1 Nxf6 54. Kh2 Bb7 55. Qf1 Rc7 56. Qf3 a6 57. Rg1
Rc6 58. Kh1 Ka7 59. Rg4 Rc8 60. Kg2 a5 61. Qd1 Rh7 62. Rxh4 Rxh4
63. Bxh4 Qh8 64. Bxf6 Qxf6 65. Rg5 Rh8 66. Qf3 Qd8 67. Qg3 Rh6
68. Qf2 e5 69. Qg3 Bc8 70. h4 e4 71. Bd1 Qh8 72. h5 Bf5 73. Be2 f6
74. Rxf5 gxf5 75. Qh3 Qh7 76. Kf1 b5 77. Ke1 Rg6 78. a3 Kb8 79. Kd2
Rg1 80. Bf1 Kc7 81. Ke1 Rg8 82. Kf2 b4 83. axb4 axb4 84. Qh4 Qg7
85. Qh2 Kd6 86. cxb4 Rb8 87. Be2 Ke6 88. Qh1 Qb7 89. h6 Rh8 90. Qc1
Rxh6 91. Bxc4 Qg7 92. Bxd5+ Kxd5 93. Qc5+ Ke6 94. Qc4+ Kd7 95. Qd5+
Ke7 96. Qb7+ Kf8 97. Qxg7+ Kxg7 98. Kg1 Rh8 99. Kf1 Rb8 100. b5 Kg6
0-1 {thebaron resigns}
[Event "7th Annual WCRCC"]
[Site "chessclub.com"]
[Date "2013.07.20"]
[Round "2"]
[White "Telepath"]
[Black "Arasan 16.0"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "2354"]
[BlackElo "2433"]
[TimeControl "1500+4"]

1. d4 Nf6 2. Nf3 d5 3. Bf4 c5 4. c3 cxd4 5. cxd4 Nc6 6. e3 Qb6 7. Qb3
Qxb3 8. axb3 Nh5 9. Be5 Bd7 10. Nc3 e6 11. Be2 f6 12. Bc7 Rc8 13. Nb5
Bb4+ 14. Nd2 Ke7 15. Bxh5 a6 16. Bf3 axb5 17. Bb6 Kd6 18. Kd1 Ra8
19. Ke2 e5 20. dxe5+ Nxe5 21. Bd4 Rhc8 22. Rxa8 Rxa8 23. e4 Nc6
24. Bc3 d4 25. Bxb4+ Nxb4 26. Rb1 Rc8 27. h3 g6 28. Bg4 f5 29. exf5
h5 30. Bf3 Bxf5 31. Be4 Bxe4 32. Nxe4+ Ke5 33. Nd2 Kd5 34. f3 Na6
35. Kd1 d3 36. Rc1 Rxc1+ 37. Kxc1 Kd4 38. Ne4 Ke3 39. Kd1 h4 40. Ke1
Nb4 41. Nc3 Nc2+ 42. Kd1 Kf2 43. Kd2 Kxg2 44. Kxd3 Kxh3 45. Ne4 Kg2
46. Ng5 h3 47. Nxh3 Kxh3 48. Kxc2 Kg3 49. Kc3 Kxf3 50. Kd4 g5 51. b4
g4 52. Kc5 g3 53. Kb6 g2 54. Kxb7 g1=Q 55. b3 Qg6 56. Kc8 Qf7 57. Kb8
Ke4 58. Kc8 Kd5 59. Kb8 Kc6 60. Kc8 Qf8# 0-1 {Telepath checkmated}
[Event "7th Annual WCRCC"]
[Site "chessclub.com"]
[Date "2013.07.20"]
[Round "3"]
[White "Arasan 16.0"]
[Black "Sjeng"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2433"]
[BlackElo "2879"]
[TimeControl "1500+4"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. e5 d5 7. Bb5
Ne4 8. cxd4 Bb6 9. Bxc6+ bxc6 10. Qc2 c5 11. dxc5 Bxc5 12. O-O O-O
13. Nc3 Bb6 14. a4 Ba6 15. a5 Nxc3 16. Qxc3 Bxf1 17. Kxf1 Qd7
18. axb6 axb6 19. Ra3 c5 20. Qb3 Qc6 21. Qd3 Rxa3 22. bxa3 Rd8 23. h3
Qe6 24. Bg5 Ra8 25. Bc1 h6 26. Kg1 d4 27. Qe4 Rd8 28. Bd2 Qd5 29. Qb1
c4 30. Qxb6 c3 31. Be1 c2 32. Bd2 d3 33. Qb4 Rc8 34. Bc1 Rc4 35. Qb8+
Kh7 36. Kh2 Rc6 37. Qb2 Qc4 38. Qb7 Rc7 39. Qb6 Rd7 40. Qe3 Rd8
41. Qb6 Rc8 42. Qe3 Kg8 43. Nd2 Qc5 44. Qg3 Qd5 45. Nf3 Kh8 46. Qf4
Rc4 47. Qf5 Rc5 48. Qg4 Rc6 49. Qb4 f6 50. exf6 Rxf6 51. Kg1 Rg6
52. Kh1 Qe6 53. Qc5 Qe4 54. Kh2 Kh7 55. Qh5 Kg8 56. a4 Rd6 57. Qc5
Qd5 58. Qc3 Rc6 59. Qe1 Re6 60. Qc3 Qc6 61. Qa5 Rd6 62. Qb4 Kh7
63. Ne5 Qd5 64. Qf4 Kg8 65. a5 Rd8 66. Bd2 Qe6 67. Qe3 Qd6 68. Qe4
Qc7 69. a6 Rd6 70. Bf4 g5 71. a7 Qxa7 72. Qc4+ Kh7 73. Bc1 Rd4
74. Qc8 Qe7 75. Qf5+ Kg8 76. Qg6+ Qg7 77. Qe6+ Kh7 78. Qf5+ Kg8
79. Nxd3 Qf7 80. Qc8+ Qf8 81. Qe6+ Qf7 82. Qe3 Rd6 83. Qe2 Qg6
84. Nb4 Rb6 85. Qd2 Qd6+ 86. Qxd6 Rxd6 87. Be3 c1=Q 88. Bxc1 Re6
89. Be3 Kg7 90. Nc2 Kg6 91. g4 Ra6 92. Ne1 Ra5 93. Nf3 Kh7 94. Kg3
Rb5 95. Nd4 Rb8 96. h4 gxh4+ 97. Kxh4 Kg6 98. Nf5 h5 99. Ne7+ Kf7
100. Nc6 Rc8 101. Na7 Rh8 102. gxh5 Re8 103. Nc6 Kg7 104. h6+ Kg6
105. Bg5 Ra8 106. f4 Ra1 107. Ne5+ Kf5 108. Kh5 Rb1 109. h7 Rb8
1-0 {Sjeng resigns}
[Event "7th Annual WCRCC"]
[Site "chessclub.com"]
[Date "2013.07.20"]
[Round "4"]
[White "Arasan 16.0"]
[Black "Rookie"]
[Result "1-0"]
[ECO "A46"]
[WhiteElo "2433"]
[BlackElo "2379"]
[TimeControl "1500+4"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 c5 5. cxd5 exd5 6. Bg2 cxd4
7. Nxd4 Bc5 8. O-O O-O 9. Nc3 Nc6 10. Nb3 Bb6 11. Bg5 h6 12. Bxf6
Qxf6 13. Qxd5 Bg4 14. Qb5 Rad8 15. a4 Rfe8 16. a5 Nd4 17. Qb4 Nxb3
18. Qxb3 Bd4 19. e3 Be5 20. Qxb7 Rd7 21. Qb4 Qe6 22. Bd5 Qg6 23. Qb5
Rdd8 24. Qc4 Rd7 25. Ra4 Bh3 26. Qc6 Qd3 27. Bg2 Bxg2 28. Kxg2 Rde7
29. Rd1 Qc2 30. Rd7 Re6 31. Qe4 Qxb2 32. Nd5 Qb5 33. Rb7 Qa6 34. Rab4
Qxa5 35. Ra4 Qc5 36. Qf3 Rf8 37. Raxa7 Bb8 38. Ra8 Ree8 39. Nb6 Qd6
40. Ra4 Bc7 41. Nd5 Bd8 42. Raa7 Qg6 43. h3 Re5 44. Rd7 Qe6 45. Qd1
Qc6 46. Kh2 Bb6 47. Rab7 Bd8 48. Qb3 Qg6 49. Ra7 Qf5 50. f4 h5
51. Qc4 Qe4 52. Qxe4 Rxe4 53. Kg2 Bf6 54. g4 hxg4 55. hxg4 Rc4
56. Kf3 Rc1 57. g5 Ba1 58. Ne7+ Kh8 59. g6 Bf6 60. gxf7 Rxf7 61. Ng6+
Kh7 62. Rxf7 Kxg6 63. Rfc7 Rh1 64. e4 Rf1+ 65. Kg3 Rg1+ 66. Kh2 Rg4
67. e5 Rxf4 68. exf6 gxf6 69. Ra3 Kf5 70. Kg3 Rg4+ 71. Kf2 Rh4
72. Rf3+ Ke5 73. Re7+ Kd6 74. Rf7 Ke5 75. R7xf6 Rh7 76. R6f5+ Ke6
77. Ke3 Rh6 78. Kd4 Rh4+ 79. R3f4 Rh6 80. Ra5 Rh2 81. Ra6+ Ke7
82. Ke5 1-0 {Rookie resigns}
[Event "7th Annual WCRCC"]
[Site "chessclub.com"]
[Date "2013.07.20"]
[Round "5"]
[White "parrotC"]
[Black "Arasan 16.0"]
[Result "0-1"]
[ECO "B84"]
[WhiteElo "2218"]
[BlackElo "2433"]
[TimeControl "1500+4"]

1. Nf3 c5 2. e4 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. O-O
Qc7 8. f4 Be7 9. Qe1 O-O 10. Qg3 Nc6 11. Be3 Bd7 12. Rad1 Nxd4
13. Bxd4 Bc6 14. Bf3 b5 15. a3 Rad8 16. b4 Kh8 17. Rf2 Ne8 18. Rfd2
Bf6 19. Qf2 Bxd4 20. Rxd4 Rc8 21. R4d3 Ba8 22. g4 Qe7 23. Re1 Rc4
24. Qd2 Qc7 25. Ree3 Qa7 26. Qg2 Bc6 27. f5 a5 28. bxa5 Qxa5 29. e5
Bd7 30. fxe6 fxe6 31. exd6 Qxa3 32. Qg3 Qa7 33. Ne4 Rxc2 34. Bd1 Rc4
35. Bf3 b4 36. Kh1 Nf6 37. Nxf6 Rxf6 38. Re1 Qc5 39. h3 Rc2 40. Be4
Ra2 41. Qe3 Qc2 42. Qg3 h6 43. Rd4 Qc5 44. Red1 g5 45. h4 gxh4
46. Qh3 b3 47. Bg2 b2 48. Qb3 h3 49. Qxa2 hxg2+ 50. Kg1 Qc6 51. Rf4
Qb6+ 52. Rfd4 0-1 {parrotC resigns}
[Event "7th Annual WCRCC"]
[Site "chessclub.com"]
[Date "2013.07.20"]
[Round "6"]
[White "NightmareX"]
[Black "Arasan 16.0"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2774"]
[BlackElo "2433"]
[TimeControl "1500+4"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Nd7 6. O-O Bg6 7. Nbd2
Ne7 8. Nh4 c5 9. c3 Qb6 10. Ndf3 Be4 11. dxc5 Qxc5 12. Nd4 Nc6
13. Be3 Qe7 14. f3 Qxh4 15. Bf2 Qg5 16. fxe4 dxe4 17. Qa4 Ncxe5
18. Nb5 Qd8 19. Qxe4 a6 20. Bg3 Qb6+ 21. Kh1 axb5 22. Bxe5 Qc6
23. Qe3 Nxe5 24. Qxe5 f6 25. Rxf6 gxf6 26. Qxf6 Rg8 27. Bh5+ Rg6
28. Bxg6+ hxg6 29. Rf1 Kd7 30. Qf7+ Kd6 31. Rd1+ Ke5 32. h4 Rc8
33. Rd4 Bh6 34. Qxg6 Rh8 35. Rb4 Kd6 36. Qf6 Qe8 37. a4 Be3 38. Re4
Ba7 39. Qe5+ Kd7 40. Qxb5+ Kc8 41. Qe5 Qd8 42. Rc4+ Kd7 43. g3 Qb8
44. Qg7+ Kd6 45. Rb4 Qf8 46. Qxf8+ Rxf8 47. Rxb7 e5 48. Rxa7 e4
49. b3 e3 50. Ra6+ Kd5 51. c4+ Ke5 52. Ra5+ Ke4 53. Ra6 Rf1+ 54. Kg2
e2 55. Re6+ Kd3 56. g4 e1=Q 57. Rxe1 Rxe1 58. h5 Ke3 59. b4 Kf4
60. b5 Re2+ 61. Kf1 Kf3 62. a5 Ra2 63. Ke1 Ke3 64. Kf1 Rf2+ 65. Kg1
Kf3 66. b6 Rg2+ 67. Kf1 Ra2 68. Ke1 Ke3 69. Kd1 Kd3 70. Kc1 Kc3
71. Kd1 Kd3 72. Kc1 Kc3 73. Kd1 Kd3
1/2-1/2 {Game drawn by repetition}
[Event "7th Annual WCRCC"]
[Site "chessclub.com"]
[Date "2013.07.20"]
[Round "7"]
[White "Arasan 16.0"]
[Black "MyrddinComp"]
[Result "1-0"]
[ECO "E84"]
[WhiteElo "2433"]
[BlackElo "2334"]
[TimeControl "1500+4"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 Nc6 7. Qd2 a6
8. Nge2 Rb8 9. Rc1 Bd7 10. Nd1 e6 11. Nf2 Qe7 12. g4 Rfc8 13. Bg2 b5
14. O-O bxc4 15. Rxc4 d5 16. Rc3 dxe4 17. fxe4 e5 18. d5 Na5 19. g5
Ne8 20. Nd3 Nd6 21. b3 Nab7 22. Rfc1 Nb5 23. R3c2 Be8 24. a4 N5d6
25. Ng3 Qd8 26. Rc3 Na5 27. Qa2 c6 28. b4 cxd5 29. Rxc8 Rxc8 30. Rxc8
Qxc8 31. bxa5 d4 32. Bd2 Bd7 33. Nb4 Be6 34. Nd5 Kh8 35. Bb4 Qc6
36. Qe2 Ne8 37. Bf1 Qxa4 38. Qxa6 Bxd5 39. exd5 Qxb4 40. Qc8 Bf8
41. Qxe8 d3 42. Qxf7 d2 43. Be2 h5 44. h4 Qf4 45. Qxf4 exf4 46. Ne4
f3 47. Bxf3 Be7 48. a6 Bd8 49. Kf1 Bb6 50. d6 Kg7 51. d7 Kf8 52. a7
Ke7 53. a8=Q d1=Q+ 54. Bxd1 Bd8 55. Qc6 Kf8 56. Qxg6 Bc7 57. Bxh5 Ke7
58. Qe8# 1-0 {MyrddinComp checkmated}
[Event "7th Annual WCRCC"]
[Site "chessclub.com"]
[Date "2013.07.20"]
[Round "8"]
[White "Arasan 16.0"]
[Black "Goldbar"]
[Result "1/2-1/2"]
[ECO "A46"]
[WhiteElo "2433"]
[BlackElo "2583"]
[TimeControl "1500+4"]

1. d4 Nf6 2. Nf3 a6 3. Bg5 d5 4. e3 c5 5. dxc5 Ne4 6. Bd3 Nxg5
7. Nxg5 e6 8. Nxh7 Bxc5 9. Qg4 g6 10. Ng5 Be7 11. Nxf7 Kxf7 12. Qxg6+
Kf8 13. Nd2 Nc6 14. Be2 Qd6 15. O-O-O Qe5 16. g3 Bd7 17. Nf3 Qg7
18. Qxg7+ Kxg7 19. h4 Raf8 20. Rh2 Rh6 21. Ne1 e5 22. Rxd5 Be6
23. Rd2 e4 24. a4 Bc5 25. h5 Rhf6 26. Rh4 Rxf2 27. Rxe4 Bf5 28. Nd3
Bxe4 29. Nxc5 Bf5 30. Nxb7 Nb4 31. e4 Bxe4 32. Nc5 Bf5 33. g4 Rc8
34. c3 Bxg4 35. Bxg4 Rxc5 36. Rxf2 Nd3+ 37. Kc2 Nxf2 38. b4 Rd5
39. Bf3 Rd6 40. c4 a5 41. bxa5 Ra6 42. Bd5 Rxa5 43. Kb3 Ra6 44. c5
Ra7 45. Kb4 Rd7 46. Ba8 Rd1 47. Bf3 Rc1 48. c6 Nd3+ 49. Kb5 Ne5
50. Bd5 Ng4 51. a5 Nf6 52. Bc4 Ne8 53. Be2 Rb1+ 54. Kc5 Kf6 55. Bd3
Rb3 56. Bc4 Rh3 57. Kb6 Ke7 58. c7 Nd6 59. Be2 Rb3+ 60. Kc6 Nc8
61. h6 Nd6 62. h7 Rc3+ 63. Kb6 Rh3 64. Bd3 Kd7 65. a6 Rh6 66. a7 Ne8+
67. Kb7 Nxc7 68. Bg6 Rh4 69. Bf5+ Kd6 70. Be4 Rh3 71. Bc2 Rh5 72. Bd3
Rh1 73. Be4 Rh2 74. Bc2 Rh1 75. Bg6 Rh2 76. Bc2 Rh1 77. Bf5 Rh2
78. Bc2 1/2-1/2 {Game drawn by repetition}
[/pgn]

A few notes:

Arasan did not lose any games today! It was a bit lucky against some of its stronger opponents, though.

The game against the Baron had a locked position for a long, long time and I thought Arasan was worse a good part of the game. But in these positions often the first player to break out successfully has advantage. IMO thebaron erred with 73. Be2 here:

[D] 7q/k4p2/1p4pr/p2p1bRP/2pPpP2/2P1P1Q1/PP4K1/3B4 w - - 0 73

allowing f6! the next move (73. Bg4 looks =).

In round 3, Arasan defeated Sjeng.

Round 4 against Rookie, Rookie played a somewhat dubious opening, lost a couple of pawns, and went down fairly quickly. Rookie is generally a strong program but is not having a good tournament so far.

Arasan drew against Nightmare and Goldbar in the last 2 rounds. These were difficult and complex games.

The Sjeng, Nightmare, and Goldbar games are annotated here:

http://www.arasanchess.org/games.shtml.

--Jon

[beachknight]

Congrats Jon. Title is on the sight!?

[jdart]

There are still 3 rounds to go. Nightmare is leading the tourney right now.

--Jon

[Werner]

ArasanX
won the
The 2013 Seventh Annual World Computer Rapid Chess Championships !!

Congrats Jon!

[jdart]

Thanks. These are the 2nd day games from Arasan:

[pgn]
[Event "7th Annual WCRCC"]
[Site "chessclub.com"]
[Date "2013.07.21"]
[Round "9"]
[White "Gaviota"]
[Black "Arasan 16.0"]
[Result "0-1"]
[ECO "D85"]
[WhiteElo "2392"]
[BlackElo "2433"]
[TimeControl "1500+4"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. cxd5 Nxd5 6. e4 Nxc3
7. bxc3 c5 8. Rb1 O-O 9. Be2 Nc6 10. d5 Ne5 11. Nxe5 Bxe5 12. Qd2 e6
13. f4 Bc7 14. O-O exd5 15. exd5 Ba5 16. d6 Rb8 17. Ba3 Bf5 18. Rbd1
Rc8 19. g4 Bd7 20. Bf3 Qf6 21. Rc1 b5 22. h3 Rfe8 23. Bb7 Rb8 24. Bd5
c4 25. Kg2 h5 26. f5 gxf5 27. g5 Qg7 28. Kh1 Kf8 29. h4 Bb6 30. Rce1
Re5 31. g6 Rxe1 32. Rxe1 Qxg6 33. Bc1 Re8 34. Rxe8+ Kxe8 35. Qe1+ Kf8
36. Bf4 Bc5 37. Qe7+ Kg8 38. Qd8+ Kh7 39. Qg5 Bf2 40. Kh2 f6
41. Qxg6+ Kxg6 42. Kh3 Be1 43. a4 Bxc3 44. axb5 Bxb5 45. Be6 Bb4
46. d7 Ba5 47. Bd2 Bxd7 48. Bxa5 Bxe6 49. Kg3 Bd5 50. Bc3 Kf7 51. Kf4
Be4 52. Bd4 a5 53. Bc3 a4 54. Ke3 a3 55. Kf4 Ke6 56. Ke3 Kd7 57. Bxf6
Kc6 58. Bc3 Kb5 59. Kd4 a2 60. Ke3 Ka4 61. Kd4 Kb3 62. Ba1 Bb7
63. Ke5 c3 64. Ke6 c2 65. Be5 c1=Q 66. Kf6 Qh6+ 0-1 {Gaviota resigns}
[Event "7th Annual WCRCC"]
[Site "chessclub.com"]
[Date "2013.07.21"]
[Round "10"]
[White "Arasan 16.0"]
[Black "EXchess"]
[Result "1-0"]
[ECO "A92"]
[WhiteElo "2433"]
[BlackElo "2365"]
[TimeControl "1500+4"]

1. d4 f5 2. Nf3 e6 3. g3 Nf6 4. Bg2 Be7 5. c4 O-O 6. O-O c6 7. Qc2 d5
8. Nbd2 Ne4 9. Ne5 Nd7 10. Nd3 Qe8 11. Nf3 g5 12. c5 Qg6 13. Be3 Qg7
14. Rad1 Re8 15. b3 h6 16. Bc1 g4 17. Nfe5 Nxe5 18. Nxe5 Nxc5
19. Nxg4 fxg4 20. dxc5 e5 21. Bb2 Rf8 22. f4 gxf3 23. exf3 Bf5
24. Qc3 Bf6 25. Qd2 a5 26. a3 h5 27. Rde1 Rfe8 28. Qd1 Re6 29. Kh1
Qg6 30. Rg1 d4 31. Re2 Ree8 32. g4 hxg4 33. Bh3 Kh8 34. Bxg4 Bxg4
35. Rxg4 Qf5 36. Qf1 Re7 37. Ree4 Qh5 38. Rg3 Rh7 39. Qg2 Bg7 40. Rg5
Qh6 41. Re1 Rf8 42. Rg3 Qf6 43. Bc1 Rf7 44. b4 axb4 45. Bg5 Qe6
46. axb4 Rf8 47. Bc1 Ra8 48. Rg1 Ra2 49. Bb2 Qf7 50. Qe2 Ra4 51. b5
cxb5 52. Qxb5 Ra6 53. R1g2 Rf6 54. Qd3 Qd5 55. Bc1 Ra6 56. Qxh7+ Kxh7
57. Rxg7+ Kh8 58. R7g4 Qd8 59. Rg5 Qe7 60. Rh5+ Qh7 61. Rxe5 Qh3
62. Re8+ Kh7 63. Re7+ Kh8 64. Bb2 Ra4 65. Re4 Qxg2+ 66. Kxg2 Ra2
67. Re8+ Kg7 68. Re7+ Kf6 69. Rxb7 Ra4 70. c6 Ke6 71. h4 d3 72. c7
Rc4 73. Kf2 Rc2+ 74. Ke3 Kd7 75. Be5 Re2+ 76. Kf4 Rc2 77. Rb8 d2
78. Rd8+ Ke7 79. Rxd2 Rxd2 80. c8=Q Rd5 81. Kf5 Rd7 82. Qg8 Rd1
83. Qg7+ Kd8 84. Ke6 Rd6+ 85. Bxd6 Ke8 86. Qf8#
1-0 {EXchess checkmated}
[Event "7th Annual WCRCC"]
[Site "chessclub.com"]
[Date "2013.07.21"]
[Round "11"]
[White "Arasan 16.0"]
[Black "CapivaraLK"]
[Result "1-0"]
[ECO "B95"]
[WhiteElo "2433"]
[BlackElo "2242"]
[TimeControl "1500+4"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. Qf3
h6 8. Be3 e5 9. Nb3 Nbd7 10. a4 Be7 11. Be2 Nf8 12. Qg3 h5 13. h3 Ne6
14. a5 Bd7 15. Qf3 Rb8 16. Bc4 Qc8 17. Nd2 h4 18. O-O O-O 19. Rfc1
Bd8 20. Nd5 Nxd5 21. Bxd5 Bc6 22. Bb3 Ng5 23. Bxg5 Bxg5 24. Rd1 Be7
25. Nc4 Qc7 26. Nb6 Bf6 27. Rd3 Kh8 28. Rad1 Rbd8 29. Bd5 Qe7 30. Rc3
Bxd5 31. Nxd5 Qe6 32. Nxf6 Qxf6 33. Qxf6 gxf6 34. Rc7 Rb8 35. Rxd6
Kg7 36. Rdd7 b6 37. axb6 Rxb6 38. b3 Rbb8 39. Kf1 Rbd8 40. Rxd8 Rxd8
41. Ke2 Rd4 42. f3 Rd6 43. b4 Rb6 44. c3 Kg6 45. Rd7 Rc6 46. Kd3 Rb6
47. Kc4 Kg7 48. Kc5 Rb8 49. Rd6 Rc8+ 50. Rc6 Ra8 51. Kb6 Kf8 52. Kb7
Rd8 53. Rc8 Rxc8 54. Kxc8 Kg7 55. c4 f5 56. exf5 Kf6 57. c5 Kxf5
58. c6 Kf4 59. c7 Kg3 60. Kb7 Kxg2 1-0 {CapivaraLK resigns}
[/pgn]

A few comments:

Against Gaviota, Arasan was in book for 20 moves. It had a good variation of the Gruenfeld Defense (it is D85 but ICC for some reason says D90). Arasan played h5 here, winning a pawn:

[D] 1r2r1k1/p2b1p1p/3P1qp1/bp1B4/2p2PP1/B1P4P/P2Q2K1/2R2R2 b - - 0 25

and soon had a strong advantage. Arasan was a bit lucky here because Gaviota is a strong program, above Arasan on most of the rating lists.

In the next round, EXchess played the Dutch Defense and although this opening statistically scores well for White, EXchess equalized pretty easily. The game was very even for a long time. Then finally at this point:

[D] 7k/1p4br/5r2/2Pqp3/3p4/3Q1PR1/6RP/2B4K b - - 0 55

EXchess blundered with 55. .. Ra6, overlooking the reply 56. Qxh7+. White gave up a Queen for Bishop + Rook but in exchange has a winning attack.

The last round game against Capivara was a somewhat unusual Najdorf. Arasan had an advantage right out of the opening and eventually got Rooks on the 7th rank and simplified into a won Rook endgame.

Arasan played on a dual Opteron for this event with 24 cores total. While this sounds impressive, an individual Opteron core is not very high performance. But there are a lot of them. At times it was getting up to 16M nodes/sec. but that was a peak and many times it was down as low as 3-4M. I still have some work to do on multiprocessor scaling, although the version that played here has some improvements compared to the latest released version 15.6.

Thanks to everyone who participated in the tourney, and CR for organizing it.

I am planning to release the version that played in the tourney soon (will be version 16.0).

[velmarin]

ArasanX
won the
The 2013 Seventh Annual World Computer Rapid Chess Championships !!

Congrats Jon!

Congrats, Your work and enthusiasm deserves.

[Lyudmil Tsvetkov]

The game with the Baron was an interesting one.
The Baron missed a very easy win: 29.Bf5 ef5 30.Bg5 h5 31.Bh6 Kg8 32.Bg7 and the queen aims at h6.

[Graham Banks]

ArasanX won the 2013 Seventh Annual World Computer Rapid Chess Championships !!

Congrats Jon!

Yes - good reward for your tireless efforts with Arasan.

[Lars Sandin]

ArasanX
won the
The 2013 Seventh Annual World Computer Rapid Chess Championships !!

Congrats Jon!

Congratulations on your victory, Jon! It's always a pleasure to see tournaments like these being arranged. Great work by everyone involved in organizing and competing in the tournament! And thanks also for providing the games from the tourney so that one can see the interesting games that was played!

[gerold]

Good for you Jon. Interesting games.

Best,
Gerold.