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Subject: Re: Attacking the king

Author: Mike Byrne

Date: 15:39:00 02/13/05

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On February 13, 2005 at 08:42:42, Vincent Lejeune wrote:

>Wich engine find the key move Bh7+! (with > +5.00 score), the mainline is 16...
>Kh8 17. Qf5 Nd7 18. Bxg7+!! Nxg7 19.Rxg7!! 1-0
>
>[d]rn1qnrk1/pb2bpp1/1p6/2ppB2p/3P4/2NBPN1P/PPQ2P2/2KR2R1 w - - 0 16

Crafty 64-bit dual opterons
Black(1): rn1qnrk1/pb2bpp1/1p6/2ppB2p/3P4/2NBPN1P/PPQ2P2/2KR2R1 w - - 0 16
White(1): g
              time surplus  28.39  time limit 10:00 (10:00)
              depth   time  score   variation (1)
                5     0.04  -0.50   1. Bh7+ Kh8 2. dxc5 Nd7 3. Qf5 Bxc5
                                    4. Qxh5 <HT>
                5->   0.11  -0.50   1. Bh7+ Kh8 2. dxc5 Nd7 3. Qf5 Bxc5
                                    4. Qxh5 <HT>
                6     0.15  -0.50   1. Bh7+ Kh8 2. dxc5 Nd7 3. Qf5 Bxc5
                                    4. Qxh5 Nxe5 5. Nxe5
                6->   0.31  -0.50   1. Bh7+ Kh8 2. dxc5 Nd7 3. Qf5 Bxc5
                                    4. Qxh5 Nxe5 5. Nxe5 (s=3)
                7     0.54  -0.83   1. Bh7+ Kh8 2. dxc5 Bxc5 3. Na4 Bd6
                                    4. Qf5 Qc7+ 5. Kb1 Bc6 (s=2)
                7     0.73  -0.39   1. Bb5 Nd7 2. Qf5 Nxe5 3. dxe5 h4 4.
                                    Qg4 Bc8
                7->   0.98  -0.39   1. Bb5 Nd7 2. Qf5 Nxe5 3. dxe5 h4 4.
                                    Qg4 Bc8 (s=2)
                8     1.17  -0.42   1. Bb5 Nd7 2. Qf5 Ndf6 3. dxc5 Bxc5
                                    4. Qg5 Be7 5. Bxe8 Nxe8 6. Qxh5
                8->   1.84  -0.42   1. Bb5 Nd7 2. Qf5 Ndf6 3. dxc5 Bxc5
                                    4. Qg5 Be7 5. Bxe8 Nxe8 6. Qxh5 (s=3)
                9     2.29  -0.42   1. Bb5 Nd7 2. Qf5 Ndf6 3. dxc5 Bxc5
                                    4. Qg5 Be7 5. Bxe8 Nxe8 6. Qxh5 (s=2)
                9->   3.68  -0.42   1. Bb5 Nd7 2. Qf5 Ndf6 3. dxc5 Bxc5
                                    4. Qg5 Be7 5. Bxe8 Nxe8 6. Qxh5 (s=3)
               10     4.89  -0.49   1. Bb5 Nd7 2. Qf5 Ndf6 3. dxc5 Bxc5
                                    4. Qg5 g6 5. Kb1 Rc8 6. Nd4 (s=2)
               10->  13.34  -0.49   1. Bb5 Nd7 2. Qf5 Ndf6 3. dxc5 Bxc5
                                    4. Qg5 g6 5. Kb1 Rc8 6. Nd4 (s=5)
               11    16.72  -0.36   1. Bb5 Nd7 2. Qf5 Ndf6 3. Bxe8 Nxe8
                                    4. Qxh5 f6 5. Bf4 Rc8 6. Kb1 cxd4 7.
                                    Nxd4 (s=4)
               11->  37.95  -0.36   1. Bb5 Nd7 2. Qf5 Ndf6 3. Bxe8 Nxe8
                                    4. Qxh5 f6 5. Bf4 Rc8 6. Kb1 cxd4 7.
                                    Nxd4 (s=6)
               12    44.64  -0.40   1. Bb5 Nd7 2. Qf5 Ndf6 3. Bxe8 Nxe8
                                    4. Qxh5 f6 5. Bf4 Rc8 6. Kb1 cxd4 7.
                                    Rxd4 Bc5 (s=5)
               12    55.82     +1   1. Bh7+!!
               12     1:05   0.48   1. Bh7+ Kh8 2. Qf5 Nd7 3. Bxg7+ Nxg7
                                    4. Rxg7 Nf6 5. Rdg1 Bc8 6. Qf4 Qd6
                                    7. Ne5 cxd4 8. exd4 Nxh7 9. Nxf7+ Rxf7
                                    10. Qxf7 (s=4)
               12->   1:08   0.48   1. Bh7+ Kh8 2. Qf5 Nd7 3. Bxg7+ Nxg7
                                    4. Rxg7 Nf6 5. Rdg1 Bc8 6. Qf4 Qd6
                                    7. Ne5 cxd4 8. exd4 Nxh7 9. Nxf7+ Rxf7
                                    10. Qxf7 (s=2)
               13     1:20     +1   1. Bh7+!!
               13     3:19     +3   1. Bh7+!!
               13     6:15   1/54*  1. Bh7+
               13     7:24     +M   1. Bh7+!!
               13     7:32   3.82   1. Bh7+ Kh8 2. Rxg7 Nxg7 3. Bxg7+ Kxg7
                                    4. Rg1+ Kh8 5. Qf5 Bg5 6. Nxg5 f6 7.
                                    Bg8 Qd7 8. Ne6 Rf7 9. Qxh5+ Rh7 10.
                                    Qxh7+ Qxh7 11. Bxh7 Kxh7 12. dxc5 bxc5
                                    13. Nxc5
               13     8:21   4.51   1. Rxg7+ Nxg7 2. Bh7+ Kh8 3. Bxg7+
                                    Kxg7 4. Rg1+ Bg5 5. Nxg5 Qc8 6. Bf5
                                    Qe8 7. Nxf7+ Kf6 8. Nd6 Qc6 9. Rg6+
                                    Ke7 10. Nc8+ Rxc8 11. Rxc6 Nxc6 12.
                                    Nxd5+
               13->   8:33   4.51   1. Rxg7+ Nxg7 2. Bh7+ Kh8 3. Bxg7+
                                    Kxg7 4. Rg1+ Bg5 5. Nxg5 Qc8 6. Bf5
                                    Qe8 7. Nxf7+ Kf6 8. Nd6 Qc6 9. Rg6+
                                    Ke7 10. Nc8+ Rxc8 11. Rxc6 Nxc6 12.
                                    Nxd5+ (s=2)
              time=10:00  cpu=196%  mat=-1  n=2162145924  fh=88%  nps=3.60M
              ext-> chk=72251535 cap=7232195 pp=1736905 1rep=10015674 mate=13856
42
              predicted=0  nodes=2162145924  evals=681313236  50move=0
              endgame tablebase-> probes=0  hits=0
              hashing-> 13%(raw) 12%(depth)  -1431684964%(sat)  99%(pawn)
              hashing-> 0%(exact)  10%(lower)  0%(upper)
              SMP->  split=1203  stop=225  data=7/128  cpu=19:42  elap=10:00

White(1): Rxg7+
              time used:  10:00
Black(1):



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