April 12, 2011 began a rematch for the title of computer elite division Thoresen Chess Engines Competition, in which the update Rybka 4.1 (the author - Vasik Rajlich) tries to win back against Houdini 1.5a (writer - Robert Houdart) from defeat in the last match by score 23 ½ - 16 ½. The match takes place with the same conditions: 40 parties control 150 minutes for the entire game + 30 seconds added per move. In the case of a draw account has 8 parties control 25 minutes + 10 seconds added per move. Endgame database is limited to five figures, the debut book - ten strokes.
After 22 parties through equal: 11-11.
for live webcast see:
http://www.tcec-chess.org/tcec_em.php
Houdini 1.5a is most powerful free chess engine made ever for example see it's excellent tactical view in below game:
[Event "?"]
[Site "?"]
[Date "2011.4.2"]
[Round "?"]
[White "Houdini 1.5a w32"]
[Black "Komodo32 1.3 JA"]
[Result "1-0"]
[WhiteELO "?"]
[BlackELO "?"]
[SetUp "1"]
[FEN "1r1n4/4bk1p/1Pq2pp1/2p1p2P/p1N5/2P1BpPQ/P4P2/3R2K1 b KQkq - 0 33"]
%Created by Caissa's Web PGN Editor
33... Kg8 34. b7!! Nxb7 {(34... Rxb7 ?? 35. Na5 Qe8 36. Nxb7 Nxb7 37. hxg6
hxg638. Rd7 Nd6 39. Qe6+ Qf7 40. Qxe7 Qxe7 41. Rxe7 +-)} 35. Rd7 Re8 {(35...
Nd6 ?36. Qe6+ ! +-)} 36. Nd6!! {(36. hxg6 only end to equal in best way hxg6
37.Qh6 (37. Nd6 ?? Nxd6 -+ 38. Qe6+ Kg7 39. Rxe7+ Rxe7 40. Qxe7+ Nf7 41. Bxc5
Qc8and now white threats come to end) 37... Qxd7 only move 38. Qxg6+ Kh8 39.
Qh5+ Kg8 and game end in perpetual check)} 36... Nxd6 {(36... Bxd6 37. hxg6
Qxd7 (37...Re7 38. Rxe7 Bxe7 39. Qxh7+ Kf8 40. Qf7#) 38. Qxd7 Re7 39. Qf5 +-)
} 37. Qe6+ Kg7 38. Rxe7+ Rxe7 39. Qxe7+ Nf7 40. h6+ Kg8 {(40... Kh8 41.
Qf8#)} 41. Bxc5 Qa8 42. Qxf6 Nxh6 43. Qxe5 Nf7 44. Qe6 Qd8 45. Qe4 Ng5 {black
can't prevent frommaterial loss } 46. Qxa4 Qc8 47. Bd4 Nh3+ 48. Kf1 Ng5 49.
Qb3+ Kf8 50. Qd5 Qh3+ 51. Ke1 Qe6+ 52. Qxe6 Nxe6 53. Kd2 Ke7 54. Ke3 Kd6 55.
Kxf3 Kd5 56. a4 Kc4 57. Ke4 Nc7 58. f4 Kb3 59. a5 Kc4 60. g4 Kb5 61. f5 gxf5+
62. gxf5 Kc6 63. f6 Ne6 64. a6 h5 65. Kf5 1-0