6th Annual ACCA Pam-Am Chmp. - annotated Arasan games

[jdart]

[Event "6th Annual ACCA Americas' Computer Chess Chmp."]
[Site "80.100.28.169"]
[Date "2011.11.12"]
[Round "1"]
[White "Symbolic"]
[Black "Arasan 13.3"]
[Result "0-1"]
[ECO "C02"]
[BlackElo "1700"]
[Annotator "Dart,Jon"]
[PlyCount "108"]
[EventDate "2011.??.??"]
[TimeControl "2700+10"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Nc6 6. a3 c4 7. Be2 Bd7 8. Nbd2 Na5
9. O-O Ne7 10. Rb1 h6 11. b4 ({much commoner here is} 11. Re1) 11... cxb3 12.
c4 Ba4 13. Bb2 Qd8 (13... Nec6 14. cxd5 exd5 15. Rc1 O-O-O 16. e6 f6 17. Nh4
Kb8 18. Ng6 Rg8 19. Re1 Bd6 20. Nf3 Rge8 21. Bd3 Bb5 22. Nfh4 Bxd3 23. Qxd3 Nc4
24. Rxc4 dxc4 25. Qxc4 Na5 26. Qa4 Qc7 27. Nf5 Nc4 28. Nxd6 Nxd6 29. Qxb3 Qa5
30. Bc3 Qg5 31. Nf8 Rc8 32. Nd7+ Ka8 33. Nc5 b6 34. Nd3 Qb5 35. Bb4 a5 36. a4
Qc4 37. Qxc4 Rxc4 38. Bxd6 Rxd4 39. Bc7 Rxd3 40. f4 Kb7 {0-1 Westerinen,H
(2390)-Putzbach,G (2265)/Hamburg 1992/EXT 1997}) 14. Bc3 Nec6 15. Qc1 Rb8 16.
cxd5 Qxd5 17. Bxa5 Nxa5 18. Bd1 Be7 19. Qc3 O-O 20. Nxb3 Nc4 21. Nc5 Bxd1 22.
Rfxd1 Rfc8 23. Rbc1 b5 24. a4 Bxc5 25. dxc5 Qxc5 26. axb5 Qxb5 {Black's
outside passer will be decisive.} 27. Qd4 a5 28. Qd3 a4 29. h3 Rc5 30. Rb1 Qe8
31. Qd4 Rbc8 32. Rb8 $2 Rd5 $1 {Arasan's score jumped to +3.7 here} 33. Rxc8
Qxc8 34. Qa1 Rxd1+ 35. Qxd1 a3 36. Qa4 Qc5 37. Qa8+ Kh7 38. Qe4+ g6 39. Qb7 Kg7
40. Qb1 Qd5 41. Kh2 Nd2 $1 {score was +16.6 here.} 42. Qb4 Nxf3+ 43. gxf3 Qxe5+
44. f4 Qb2 45. Qe1 a2 46. Qf1 a1=Q 47. Qxa1 Qxa1 48. Kg2 Qd1 49. Kg3 Kf6 50.
Kg2 Kf5 51. Kh2 Qf1 52. Kg3 Ke4 53. f3+ Qxf3+ 54. Kh2 Qf2+ 0-1

[Event "6th Annual ACCA Americas' Computer Chess Chmp."]
[Site "80.100.28.169"]
[Date "2011.11.12"]
[Round "2"]
[White "Arasan 13.3"]
[Black "Hannibal"]
[Result "0-1"]
[ECO "D43"]
[WhiteElo "1700"]
[BlackElo "1983"]
[Annotator "Dart,Jon"]
[PlyCount "101"]
[EventDate "2011.??.??"]
[TimeControl "2700+10"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 h6 6. Bxf6 Qxf6 7. e3 Nd7 8. Bd3
dxc4 9. Bxc4 g6 10. O-O Bg7 11. Qc2 O-O 12. Rad1 Qe7 13. Rfe1 Rd8 14. Bd3 (14.
a3 b6 15. Ne2 Bb7 16. Nf4 Nf8 17. h3 {1/2-1/2 Kasparov,G (2805)-Ehlvest,J
(2615)/Riga 1995/CBM 047}) 14... c5 15. a3 cxd4 16. exd4 Nb6 17. Bb5 Qc7 18.
Ne5 a6 19. Be2 Bd7 20. Qe4 Rac8 21. Rc1 Bc6 22. Qe3 Qe7 23. Ne4 $6 ({Houdini 1.
5 suggests} 23. g3 $11) 23... Bxe4 24. Qxe4 Rxc1 25. Rxc1 Qd6 26. Qf4 (26. Nf3
$5 Rd7 $15) 26... Bxe5 27. dxe5 Qd2 28. Qxd2 Rxd2 29. Bf3 Rxb2 30. Bxb7 a5 31.
Ba6 Rb3 32. Ra1 Nd7 33. f4 g5 34. Bc4 Re3 35. Bb5 Nb6 36. fxg5 hxg5 37. Bf1 Na4
38. Kf2 Rxe5 39. Rc1 Nc5 40. Re1 $2 {White should not exchange pieces when a
pawn down.} Rxe1 41. Kxe1 f5 42. Kd2 e5 43. Kc3 Ne4+ 44. Kd3 Kf7 45. Be2 Nd6
46. Kc3 Ke6 47. Kb3 Kd5 48. Ka4 Nc4 49. g3 e4 50. Kb3 Ne3 51. Ba6 0-1

[Event "6th Annual ACCA Americas' Computer Chess Chmp."]
[Site "80.100.28.169"]
[Date "2011.11.12"]
[Round "3"]
[White "Crafty"]
[Black "Arasan 13.3"]
[Result "1/2-1/2"]
[ECO "C07"]
[WhiteElo "1951"]
[BlackElo "1700"]
[Annotator "Dart,Jon"]
[PlyCount "85"]
[EventDate "2011.??.??"]
[TimeControl "2700+10"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd6 7. O-O Nf6 8.
Nb3 Nc6 9. Nbxd4 Nxd4 10. Nxd4 a6 11. Bb3 Qc7 12. Qf3 Bd6 13. h3 O-O 14. Bg5
Nd7 15. c3 Ne5 16. Qe2 (16. Qh5 $142) 16... b6 $146 (16... Ng6 17. Bc2 Bd7 (
17... Bh2+ 18. Kh1 Bf4 19. Nf3 $11) 18. Rad1 Rfe8 19. Qh5 Qc5 20. Nb3 Qc7 21.
Rd4 Bh2+ 22. Kh1 Be5 23. Rd2 Nf8 24. Rfd1 Bc6 25. Qh4 h6 26. Be3 Bd5 27. Nc5 b5
28. Bb3 Bc6 29. Qg4 Kh8 30. Qh5 a5 31. a4 bxa4 32. Bxa4 Bxa4 33. Nxa4 Bf6 34.
Nc5 Kg8 35. Nd7 Be7 36. Ne5 Bf6 37. Nd7 Be7 38. Qg4 Kh8 39. Nxf8 Bxf8 {1-0
Asrian,K (2621)-Ionov,S (2546)/Moscow 2008/CBM 123}) 17. Kh1 Ng6 18. f4 a5 19.
Nb5 Qc5 20. Nxd6 Qxd6 21. Rad1 Qc7 22. Rf2 h6 23. f5 exf5 24. Bc1 Bd7 25. Qh5
a4 26. Bd5 Ra5 27. c4 Ne7 28. Bf4 Qc8 29. Bxh6 $5 gxh6 30. Qxh6 Rxd5 31. cxd5 {
This is about =. It is better to have the two pieces vs. a Rook but White has
an extra pawn in compensation.} Qc5 32. Rf3 Ng6 33. Rc3 Qb5 ({Crafty expected}
33... Qb4) 34. Qc1 f4 35. Rf3 Re8 36. Rf2 Qb4 37. a3 Qb3 38. Rf3 Re3 (38... Qb5
$5) 39. Rxe3 fxe3 40. Re1 Qxd5 41. Qxe3 Kg7 42. Qc3+ f6 43. Rf1 {Crafty
offered the draw. Arasan had a score above +1 but accepted since Crafty had a
higher rating.} 1/2-1/2

[Ferdy]

Thanks for posting, games annotated by engine authors are always interesting especially when they mentioned what had happened during the game plays. This is also helpful for amateur programmers.