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Subject: Re: Interesting Mate in 10

Author: Mike Byrne

Date: 19:16:22 01/18/05

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On January 18, 2005 at 00:37:55, Rob Basham wrote:

>[D]rq2r2k/b4pp1/2R4p/p5N1/3nN3/1P6/PK2nPRP/3Q4 w - - 0 1
>
>Rxh6+ mates!
>
>Junior 5 will ann. a mate in 10 in 14 sec.
Crafty Classic 2004 SE PB [Standard] (2 cpus)
SE code disabled

White(1): rq2r2k/b4pp1/2R4p/p5N1/3nN3/1P6/PK2nPRP/3Q4 w - - 0 1
White(1): st 6000
search time set to 6000.00.
White(1): g
              clearing hash tables
              time surplus   0.00  time limit 100:00 (100:00)
              depth   time  score   variation (1)
starting thread 1
                7     0.12   4.15   1. Rxh6+ Kg8 2. Nf6+ Kf8 3. Rh8+ Ke7
                                    4. Rxe8+ Qxe8 5. Nxe8 Rxe8 6. f3 Kf8
                                    7. Qe1
                7->   0.17   4.15   1. Rxh6+ Kg8 2. Nf6+ Kf8 3. Rh8+ Ke7
                                    4. Rxe8+ Qxe8 5. Nxe8 Rxe8 6. f3 Kf8
                                    7. Qe1 (s=2)
                8     0.45   3.83   1. Rxh6+ Kg8 2. Nf6+ Kf8 3. Rh8+ Ke7
                                    4. Rxe8+ Qxe8 5. Nxe8 Rxe8 6. f3 Nf4
                                    7. Rd2 Kf6
                8->   0.72   3.83   1. Rxh6+ Kg8 2. Nf6+ Kf8 3. Rh8+ Ke7
                                    4. Rxe8+ Qxe8 5. Nxe8 Rxe8 6. f3 Nf4
                                    7. Rd2 Kf6
                9     2.19     +1   1. Rxh6+!!
                9     2.62     +3   1. Rxh6+!!
                9     3.08     +M   1. Rxh6+!!
                9     4.47  Mat10   1. Rxh6+ Kg8 2. Nf6+ Kf8 3. Nd5 Kg8
                                    4. Rh8+ Kxh8 5. Qd3 Qxb3+ 6. axb3 Nf5
                                    7. Qh3+ Nh6 8. Qxh6+ gxh6 9. Nxf7+
                                    Kh7 10. Nf6#
                9->   5.06  Mat10   1. Rxh6+ Kg8 2. Nf6+ Kf8 3. Nd5 Kg8
                                    4. Rh8+ Kxh8 5. Qd3 Qxb3+ 6. axb3 Nf5
                                    7. Qh3+ Nh6 8. Qxh6+ gxh6 9. Nxf7+
                                    Kh7 10. Nf6#
               10     7.75  Mat10   1. Rxh6+ Kg8 2. Nf6+ Kf8 3. Nd5 Kg8
                                    4. Rh8+ Kxh8 5. Qd3 Qxb3+ 6. axb3 Nf5
                                    7. Qh3+ Nh6 8. Qxh6+ gxh6 9. Nxf7+
                                    Kh7 10. Nf6#
               10->  11.01  Mat10   1. Rxh6+ Kg8 2. Nf6+ Kf8 3. Nd5 Kg8
                                    4. Rh8+ Kxh8 5. Qd3 Qxb3+ 6. axb3 Nf5
                                    7. Qh3+ Nh6 8. Qxh6+ gxh6 9. Nxf7+
                                    Kh7 10. Nf6# (s=3)
               11    19.62  Mat09   1. Rxh6+ Kg8 2. Nf6+ Kf8 3. Nd5 Kg8
                                    4. Qd3 Qxb3+ 5. axb3 Nf5 6. Nf6+ gxf6
                                    7. Ne6+ Neg3 8. Rxg3+ Nxg3 9. Qxg3#
                                    (s=2)
               11->  30.26  Mat09   1. Rxh6+ Kg8 2. Nf6+ Kf8 3. Nd5 Kg8
                                    4. Qd3 Qxb3+ 5. axb3 Nf5 6. Nf6+ gxf6
                                    7. Ne6+ Neg3 8. Rxg3+ Nxg3 9. Qxg3#
                                    (s=2)
?              12    30.26   1/50*  1. Rxh6+
White(1): ?
              time=34.26  cpu=193%  mat=-3  n=56742126  fh=99%  nps=1.66M
              ext-> chk=5412163 cap=53846 pp=2453 1rep=374795 mate=11285
              predicted=0  nodes=56742126  evals=732020  50move=0
              endgame tablebase-> probes=0  hits=0
              SMP->  split=1086  stop=64  data=5/128  cpu=1:06  elap=34.26

mate in 9 moves.


White(1): Rxh6+
              time used:  34.26
Black(1):



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