Author: Ernst Walet
Date: 22:36:47 11/06/02
Go up one level in this thread
On October 31, 2002 at 17:44:34, Dadi Jonsson wrote: >On October 31, 2002 at 17:34:33, Dann Corbit wrote: > >>On October 31, 2002 at 17:32:12, Dadi Jonsson wrote: >> >>>The following sac was "truly unexpected". The player of the black pieces wrote a >>>book(?) including this game and said he nearly fell off his chair when he saw >>>White's next move. It is understandable that the move was unexpected. White >>>sacrifice's his rook for the pawn on e6, which is thoroughly protected by two >>>other pawns. Few human beings would have the imagination required to even start >>>thinking about this possibility. This move is on Tim Krabbe's list of the >>>greatest moves ever played. >>> >>>In spite of the above, this may not be such a spectacular move to a chess >>>program! Many of them will find this move, given enough time. I believe that the >>>original poster was asking for "truly unexpected sac" for us human beings and >>>that is a different story! >>> >>> [D] rn1r2k1/pq1p1ppp/3Rp3/2p5/2P1b3/4QNP1/P3PPBP/3R2K1 w - - >> >>They tend to find Morphy's brilliant moves quickly. His tactical greatness >>seems to be easily matched by modern hardware. > >This game was played in 1990, so it wasn't Morphy who found this move. I also >think that few (if any) programs would find this move under tournament >time-controls (unless you piled a number of CPUs on it). Chessmaster9000 needs 5 hours 47 minutes on my Celeron1200 to find Rxe6, standard personality, 256MB hash. Time Depth Score Positions Moves 0:25 1/10 0.53 3527539 1.Qxc5 Nc6 2.Qh5 h6 3.Qh4 f5 4.c5 Bd5 5.Ne1 Bxg2 6.Nxg2 0:59 2/11 0.42 8572905 1.Qxc5 Nc6 2.Qe3 f5 3.Qd2 Rab8 4.Rxd7 Rxd7 5.Qxd7 Qxd7 6.Rxd7 Rb2 7.Rd2 Rb1+ 8.Bf1 Rc1 2:38 3/12 0.49 24275283 1.Qxc5 Nc6 2.Qe3 Ne7 3.Qd2 Bc6 4.Ne1 Rac8 5.Bxc6 Nxc6 6.Rxd7 Rxd7 7.Qxd7 7:59 4/13 0.40 74830172 1.Qxc5 Nc6 2.Qe3 Ne7 3.Qd2 Bc6 4.Ne1 Qa6 5.c5 Qb5 6.Bxc6 Nxc6 7.Qe3 44:18 5/14 0.68 417019545 1.Qxc5 Nc6 2.Qe3 Ne7 3.Qd2 Bc6 4.Ne1 Bxg2 5.Nxg2 Rab8 6.Ne3 Nc6 7.Rxd7 Rxd7 8.Qxd7 Qb6 9.Qd6 2:08:01 6/15 0.52 1273006332 1.Qxc5 Nc6 2.Qe3 Bc2 3.Rc1 Ba4 4.Ne5 Rac8 5.Nd3 Qc7 6.c5 f6 7.Nb2 Bb5 8.Qd2 5:47:08 6/15 0.76 3725429909 1.Rxe6 fxe6 2.Ng5 h6 3.Nxe4 Nc6 4.Nxc5 Qc7 5.Nxd7 e5 6.Bd5+ Kh8 7.Nc5 Nb4 8.Ne6 Nxd5 9.cxd5 6:26:12 7/16 0.78 4175320744 1.Rxe6 fxe6 2.Ng5 h6 3.Nxe4 Nc6 4.Nxc5 Qc7 5.Nxd7 e5 6.Qd3 Rac8 7.Qf5 Nd4 8.Bd5+ Kh8 9.Qxe5 Nxe2+ 10.Qxe2 Qxd7 Ernst.
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