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Subject: Re: Mate-in-18 revisited

Author: Ed Schröder

Date: 01:19:12 04/15/05

Go up one level in this thread


On April 14, 2005 at 21:38:41, Mike Byrne wrote:

>modified Crafty 19.20
>dual opteron 1.8 Ghz
>posted several times before - wonder how the current crop of engines deal with
>this problem on more current hardware
>
>
>White(1): [d]1r4r1/3q1npk/2b1pbnp/Rp1p4/1N1P3P/2PQ1pP1/1K3B2/5B1R w - - 0 1
>White(1): g
>              clearing hash tables
>              time surplus   0.00  time limit 1000:00 (1000:00)
>              depth   time  score   variation (1)
>starting thread 1
>                6->   0.05  -2.89   1. h5 Ng5 2. hxg6+ Kh8 3. Qe3 Rgc8
>                                    4. Nxc6 Qxc6 5. Ra7
>                7     0.08  -2.94   1. h5 Ng5 2. hxg6+ Kh8 3. Qe3 Rgc8
>                                    4. Kb1 Qc7 5. Nxc6 Qxc6
>                7->   0.13  -2.94   1. h5 Ng5 2. hxg6+ Kh8 3. Qe3 Rgc8
>                                    4. Kb1 Qc7 5. Nxc6 Qxc6
>                8     0.24  -3.02   1. h5 Ng5 2. hxg6+ Kh8 3. Qe3 Rgc8
>                                    4. Kb1 Kg8 5. g4 Ra8 6. Nxc6 Qxc6 7.
>                                    Bxb5
>                8->   0.44  -3.02   1. h5 Ng5 2. hxg6+ Kh8 3. Qe3 Rgc8
>                                    4. Kb1 Kg8 5. g4 Ra8 6. Nxc6 Qxc6 7.
>                                    Bxb5 (s=2)
>                9     0.92  -3.14   1. h5 Ng5 2. hxg6+ Kh8 3. Ra7 Qxa7
>                                    4. Nxc6 Qc7 5. Nxb8 Rxb8 6. Kb1
>                9->   1.59  -3.14   1. h5 Ng5 2. hxg6+ Kh8 3. Ra7 Qxa7
>                                    4. Nxc6 Qc7 5. Nxb8 Rxb8 6. Kb1 (s=2)
>               10     3.14  -3.28   1. h5 Ng5 2. hxg6+ Kh8 3. Qe3 Ra8 4.
>                                    Nxc6 Qxc6 5. Rxb5 Rgb8 6. Rxb8+ Rxb8+
>                                    7. Kc1 Ne4 8. Qxf3 Nxc3
>               10->   5.49  -3.28   1. h5 Ng5 2. hxg6+ Kh8 3. Qe3 Ra8 4.
>                                    Nxc6 Qxc6 5. Rxb5 Rgb8 6. Rxb8+ Rxb8+
>                                    7. Kc1 Ne4 8. Qxf3 Nxc3
>               11    13.50  -2.99   1. h5 Ng5 2. hxg6+ Kh8 3. Be3 Rgf8
>                                    4. Ra7 Rb7 5. Ra6 Rc7 6. Bf2 Qc8 7.
>                                    Rxc6 Rxc6 8. Nxc6 Qxc6 9. Qxb5
>               11->  18.03  -2.99   1. h5 Ng5 2. hxg6+ Kh8 3. Be3 Rgf8
>                                    4. Ra7 Rb7 5. Ra6 Rc7 6. Bf2 Qc8 7.
>                                    Rxc6 Rxc6 8. Nxc6 Qxc6 9. Qxb5
>               12    21.84  -2.99   1. h5 Ng5 2. hxg6+ Kh8 3. Be3 Rgf8
>                                    4. Rh2 Bd8 5. Ra3 Qc8 6. Bf4 Rb6 7.
>                                    Rf2 Be8
>               12->  32.59  -2.99   1. h5 Ng5 2. hxg6+ Kh8 3. Be3 Rgf8
>                                    4. Rh2 Bd8 5. Ra3 Qc8 6. Bf4 Rb6 7.
>                                    Rf2 Be8 (s=2)
>               13     1:09  -2.86   1. h5 Kh8 2. hxg6 Ng5 3. Be3 Rgf8 4.
>                                    Bf4 Rbc8 5. Qe3 Kg8 6. Qf2 Qb7 7. Bd3
>                                    Qb6 8. Ra6 <HT>
>               13     1:57     +1   1. Qxg6+!!
>               13     2:22     +3   1. Qxg6+!!
>               13     2:37     +M   1. Qxg6+!!
>               13     2:52   1.95   1. Qxg6+ Kxg6 2. Bd3+ Kh5 3. g4+ Kxg4
>                                    4. Rg1+ Kh3 5. Bf1+ Kh2 6. Bg3+ Kxg1
>                                    7. Ra1 Ra8 8. Rb1 Ra1 9. Kxa1 Ra8+
>                                    10. Kb2 Ra1 11. Rxa1 Qa7 12. Rxa7 Kxf1
>                                    13. Nxc6 Kg2
>               13->   2:59   1.95   1. Qxg6+ Kxg6 2. Bd3+ Kh5 3. g4+ Kxg4
>                                    4. Rg1+ Kh3 5. Bf1+ Kh2 6. Bg3+ Kxg1
>                                    7. Ra1 Ra8 8. Rb1 Ra1 9. Kxa1 Ra8+
>                                    10. Kb2 Ra1 11. Rxa1 Qa7 12. Rxa7 Kxf1
>                                    13. Nxc6 Kg2 (s=2)
>               14     3:43     +1   1. Qxg6+!!
>               14     4:32     +3   1. Qxg6+!!
>               14     4:56     +M   1. Qxg6+!!
>               14    10:37  Mat15   1. Qxg6+ Kxg6 2. Bd3+ Kh5 3. g4+ Kxg4
>                                    4. Rg1+ Kh3 5. Bf1+ Kh2 6. Bg3+ Kxg1
>                                    7. Ra1 Ra8 8. Rb1 Ra1 9. Kxa1 Ra8+
>                                    10. Kb2 Ra1 11. Rxa1 Qa7 12. Rb1 Qa1+
>                                    13. Kxa1 Bg5 14. Bh3+ Bc1 15. Rxc1#
>               14->  10:41  Mat15   1. Qxg6+ Kxg6 2. Bd3+ Kh5 3. g4+ Kxg4
>                                    4. Rg1+ Kh3 5. Bf1+ Kh2 6. Bg3+ Kxg1
>                                    7. Ra1 Ra8 8. Rb1 Ra1 9. Kxa1 Ra8+
>                                    10. Kb2 Ra1 11. Rxa1 Qa7 12. Rb1 Qa1+
>                                    13. Kxa1 Bg5 14. Bh3+ Bc1 15. Rxc1#
>?              15    10:45   1/44*  1. Qxg6+
>White(1): ?
>              time=10:57  cpu=199%  mat=-5  n=2668197655  fh=91%  nps=4.06M
>              ext-> chk=157229884 cap=4709222 pp=7994116 1rep=22343616 mate=3267
>860
>              predicted=0  nodes=2668197655  evals=255024327  50move=0
>              endgame tablebase-> probes=0  hits=0
>              SMP->  split=2895  stop=575  data=9/64  cpu=21:49  elap=10:57
>
>mate in 15 moves.
>
>
>White(1): Qxg6+
>              time used:  10:57
>Black(1):


Pro Deo 1.1 (non modified) A64-3400

 1r4r1/3q1npk/2b1pbnp/Rp1p4/1N1P3P/2PQ1pP1/1K3B2/5B1R w - -

 00:00:00   1.00  -4.17  1.Nxc6 Qxc6 2.Rxb5
 00:00:00   1.09  -4.04  1.Qxf3
 00:00:00   2.00  -4.13  1.Qxf3 e5 2.dxe5 Nfxe5
 00:00:00   2.01  -4.13  1.h5
 00:00:00   2.01  -4.13  1.h5
 00:00:00   2.01  -1.62  1.h5 Nfh8 2.hxg6 Nxg6
 00:00:00   3.00  -1.62  1.h5 Nfh8 2.hxg6 Nxg6
 00:00:00   4.00  -1.62  1.h5 Nfh8 2.hxg6 Nxg6 3.Qxf3
 00:00:00   5.00  -1.83  1.h5 Nfh8 2.hxg6 Nxg6 3.Qxf3 Rgf8
 00:00:00   6.00  -1.53  1.h5 Nfh8 2.hxg6 Nxg6 3.Qxf3 Qc7 4.Ra1
 00:00:00   7.00  -1.68  1.h5 Nfh8 2.hxg6 Nxg6 3.Qxf3 e5 4.Bh3 Qd6
 00:00:00   8.00  -1.54  1.h5 Nfh8 2.hxg6 Nxg6 3.Qxf3 Bd8 4.Ra6 Rf8
 00:00:00   9.00  -1.63  1.h5 Nfh8 2.hxg6 Nxg6 3.Qxf3 e5 4.Bh3 Qc7
                         5.Ra6 Bb7
 00:00:01  10.00  -1.63  1.h5 Nfh8 2.hxg6 Nxg6 3.Qxf3 Bd8 4.Ra6 Rf8
                         5.Qe2 Rb6 6.Ra1
 00:00:05  11.00  -1.66  1.h5 Nfh8 2.hxg6 Nxg6 3.Qxf3 Bd8 4.Ra6 Rf8
                         5.Qe2 Bb7 6.Ra1 Ra8 7.Rxa8 Bxa8 8.Qc2
 00:00:12  12.00  -1.72  1.h5 Nfh8 2.hxg6 Nxg6 3.Qxf3 Bd8 4.Ra6 Rf8
                         5.Qe2 Bb7 6.Ra7 Bb6 7.Ra1 Ne5 8.Qxe5
 00:00:36  13.00  -1.73  1.h5 Nfh8 2.hxg6 Nxg6 3.Qxf3 Ra8 4.Ra1 Rxa1
                         5.Kxa1 e5 6.dxe5 Nxe5 7.Bd3 Nxd3 8.Qxd3 g6
                         9.g4 Rc8
 00:00:54  13.12  -1.73  1.Qxg6
 00:01:10  13.12  -1.73  1.Qxg6
 00:03:33  13.12  M 15  1.Qxg6 Kxg6 2.Bd3 Kh5 3.g4 Kxg4 4.Rg1 Kh3 5.Bf1
                        Kh2 6.Bg3 Kxg1 7.Ra1 Qa7 8.Rd1
 00:04:45  14.00  M 15  1.Qxg6 Kxg6 2.Bd3 Kh5 3.g4 Kxg4 4.Rg1 Kh3 5.Bf1
                        Kh2
 00:05:18  15.00  M 15  1.Qxg6 Kxg6 2.Bd3 Kh5 3.g4 Kxg4 4.Rg1
 00:06:27  16.00  M 15  1.Qxg6 Kxg6 2.Bd3 Kh5 3.g4 Kxg4 4.Rg1




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