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Subject: solution

Author: Mike Byrne

Date: 17:54:21 04/02/05

Go up one level in this thread


On April 02, 2005 at 20:53:43, Mike Byrne wrote:

>[d]r1bq1rk1/1p3pp1/p1np4/3Np1P1/4P3/4Q3/PPP1B1P1/2K4R w - - 0 18
>
>there is more than one way to win here, but I believe only one mate-in-10

Black(1): r1bq1rk1/1p3pp1/p1np4/3Np1P1/4P3/4Q3/PPP1B1P1/2K4R w - - 0 18
White(1): g
              time surplus   0.00  time limit 100:00 (100:00)
              depth   time  score   variation (1)
                1     0.00  -4.89   1. Kb1
                1->   0.02  -4.89   1. Kb1
                2     0.02  -5.04   1. Kb1 Bd7
                2->   0.02  -5.04   1. Kb1 Bd7
                3     0.02  -5.43   1. Kb1 Be6 2. Qf2 Bxd5 3. exd5
                3     0.02  -5.07   1. Nb6 Rb8 2. Nd5
                3->   0.02  -5.07   1. Nb6 Rb8 2. Nd5
                4     0.02  -5.22   1. Nb6 Rb8 2. Nd5 Bd7
                4->   0.03  -5.22   1. Nb6 Rb8 2. Nd5 Bd7 (s=4)
                5     0.03  -5.41   1. Nb6 Rb8 2. Bc4 Be6 3. Kb1 (s=3)
                5     0.05  -5.28   1. g6 Be6 2. gxf7+ Rxf7 3. Nb6 Rb8
                                    4. Kb1
                5->   0.05  -5.28   1. g6 Be6 2. gxf7+ Rxf7 3. Nb6 Rb8
                                    4. Kb1 (s=2)
                6     0.06  -5.36   1. g6 Be6 2. gxf7+ Rxf7 3. Kb1 Bxd5
                                    4. exd5 Nd4 5. Bg4
                6     0.08  -5.02   1. Qg3 Nd4 2. Bc4 Re8 3. Qh4 Bd7
                6->   0.08  -5.02   1. Qg3 Nd4 2. Bc4 Re8 3. Qh4 Bd7 (s=2)
                7     0.09     +1   1. Qg3!!
                7     0.11  -4.43   1. Qg3 Nd4 2. Bc4 Qd7 3. c3 Nb5 4.
                                    Qf2
                7->   0.13  -4.43   1. Qg3 Nd4 2. Bc4 Qd7 3. c3 Nb5 4.
                                    Qf2
                8     0.23     +1   1. Qg3!!
                8     0.28  -3.26   1. Qg3 Nd4 2. Bf3 f6 3. gxf6 Rf7 4.
                                    Ne7+ Rxe7 5. fxe7 Qxe7
                8->   0.30  -3.26   1. Qg3 Nd4 2. Bf3 f6 3. gxf6 Rf7 4.
                                    Ne7+ Rxe7 5. fxe7 Qxe7
                9     0.44     +1   1. Qg3!!
                9     0.75     +3   1. Qg3!!
                9     1.17     +M   1. Qg3!!
                9     1.56   1.12   1. Qg3 Nd4 2. Bc4 Ne2+ 3. Bxe2 f6 4.
                                    gxf6 <HT>
                9->   1.73   1.12   1. Qg3 Nd4 2. Bc4 Ne2+ 3. Bxe2 f6 4.
                                    gxf6 <HT> (s=2)
               10     2.19     +1   1. Qg3!!
               10     3.28     +3   1. Qg3!!
               10     5.09   3.71   1. Qg3 Nd4 2. Bc4 g6 3. Nf6+ Qxf6 4.
                                    gxf6 Ne6 5. Kb1 Bd7 6. Qg4 <HT>
               10     5.94     +1   1. Nf6+!!
               10     6.34     +3   1. Nf6+!!
               10     7.53     +M   1. Nf6+!!
               10    13.72  11.22   1. Nf6+ Qxf6 2. gxf6 Ne7 3. fxg7 Ng6
                                    4. Qh6 Bh3 5. gxf8=Q+ Rxf8 6. gxh3
                                    Rc8 7. Rg1 b5
               10->  13.75  11.22   1. Nf6+ Qxf6 2. gxf6 Ne7 3. fxg7 Ng6
                                    4. Qh6 Bh3 5. gxf8=Q+ Rxf8 6. gxh3
                                    Rc8 7. Rg1 b5
               11    14.66     +1   1. Nf6+!!
               11    15.66     +3   1. Nf6+!!
               11    16.77     +M   1. Nf6+!!
               11    51.50  Mat10   1. Nf6+ gxf6 2. Qg3 Kg7 3. Qh4 Rh8
                                    4. gxf6+ Kg6 5. Bh5+ Rxh5 6. Qxh5+
                                    Kxf6 7. Rf1+ Bf5 8. Rxf5+ Kg7 9. Rxf7+
                                    Kg8 10. Qh7#
               11->  51.59  Mat10   1. Nf6+ gxf6 2. Qg3 Kg7 3. Qh4 Rh8
                                    4. gxf6+ Kg6 5. Bh5+ Rxh5 6. Qxh5+
                                    Kxf6 7. Rf1+ Bf5 8. Rxf5+ Kg7 9. Rxf7+
                                    Kg8 10. Qh7#
?              12     1:00   1/54*  1. Nf6+
White(1): ?
              time=1:09  cpu=182%  mat=-5  n=289396618  fh=98%  nps=4.18M
              ext-> chk=40090859 cap=309405 pp=303233 1rep=7884700 mate=93560
              predicted=2  nodes=289396618  evals=6455461  50move=0
              endgame tablebase-> probes=0  hits=0
              SMP->  split=1418  stop=224  data=8/64  cpu=2:05  elap=1:09

mate in 10 moves.


White(1): Nf6+
              time used:   1:09



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