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Subject: Re: BXG7 Kasparov Portish Niksic 1983 (Crafty 19.17)

Author: Frank E. Oldham

Date: 19:39:31 02/03/05

Go up one level in this thread


On February 02, 2005 at 19:00:10, John Merlino wrote:

>On February 02, 2005 at 18:46:21, John Jack wrote:
>
>>Hiarcs 9 Finds and makes the BXG7 move 3.80GHZ 256MB of ram What other engine
>>make this move
>
>You typically cannot expect people to test a position if you do not give it to
>them.
>
>Here it is:
>
>[D]2r2rk1/p1q1bpp1/1p6/n2R4/8/P4N2/1B2QPPP/5RK1 w - - 0 21
>
>Additionally, you do not say how long it took H9 to find the move. Generally,
>the information required to get a good idea of how well an engine does on a
>position is:
>
>position, engine, engine parameters (if different from the default), CPU, time
>to find given move
>
>Other useful information is:
>
>PV, eval, search depth, hash size
>
>CM9_R1 on an AMD 2500 finds this move in 0:20, but then gives it up a few
>seconds later. It eventually settles on Rh5 with a fairly good score:
>
>Time	Depth	Score	Positions	Moves
>0:00	1/3	1.09	1429		21.Re1 Rfe8 22.Qd3 Red8
>0:00	1/4	1.09	4779		21.Re1 Rfe8 22.Qd3 Red8
>0:00	1/4	1.15	10688		21.Rh5 Nc4 22.Qd3 f5 23.Rc1
>0:00	1/5	0.89	42481		21.Rh5 Rfe8 22.Rc1 Qxc1+ 23.Bxc1
>					Rxc1+ 24.Ne1 Nc4 25.Qe4
>0:00	1/5	1.02	72737		21.Ne5 Rcd8 22.Rfd1 Rxd5 23.Rxd5
>					Rd8 24.Qd3 Rxd5 25.Qxd5
>0:00	1/6	1.04	145965		21.Ne5 Rfd8 22.Qh5 Bf6 23.Rfd1
>					Rxd5 24.Rxd5 Bxe5 25.Bxe5
>0:01	1/7	0.91	335045		21.Ne5 Bf6 22.Rd7 Qc2 23.Rd2 Qf5
>					24.Rfd1 Rfe8
>0:05	1/8	1.00	1297834		21.Ne5 Bf6 22.Rfd1 Rfd8 23.Rd7
>					Rxd7 24.Rxd7 Qc2
>0:13	1/9	0.40	3434918		21.Ne5 Qc2 22.Rd2 Qf5 23.Rfd1 Rfe8
>					24.Rd5 Rc2 25.R1d2 Rxd2 26.Qxd2
>					Bxa3 27.Nxf7 Re1+ 28.Qxe1 Qxd5
>					29.Bxa3 Qxf7
>0:20	1/9	0.88	5372177		21.Bxg7 Kxg7 22.Ne5 Rfd8 23.Qg4+
>					Kf8 24.Nd7+ Rxd7 25.Rxd7 Qc3 26.Rxa7
>					Rd8 27.Qh5
>0:26	1/9	0.96	6780735		21.Nd2 Bd6 22.g3 Rcd8 23.Bxg7 Rfe8
>					24.Qg4 f5 25.Qg6 Qxg7 26.Rxd6 Qxg6
>					27.Rxg6+ Kf7
>1:09	1/10	0.96	18320629	21.Nd2 Rcd8 22.Qg4 f6 23.Qe6+ Rf7
>					24.Rc1 Bc5 25.Ne4 Rxd5 26.Qxd5
>					Qd7 27.Qh5 Nb3
>1:37	1/10	1.20	26285872	21.Rh5 Qc2 22.Qxe7 Qxb2 23.Rh3
>					Qf6 24.Qxf6 gxf6 25.Nd4 Rfd8 26.Nf5
>					Nc4
>2:37	1/11	1.41	43085388	21.Rh5 Qc2 22.Qxe7 Qxb2 23.Rh3
>					Qf6 24.Qxf6 gxf6 25.Nd4 Rc5 26.Re1
>					Rd8
>4:58	1/12	1.07	84633761	21.Rh5 Qc2 22.Qxe7 Qxb2 23.Rd1
>					g6 24.Rhd5 Nc4 25.a4 Rfe8 26.Qxa7
>					Re2 27.Qb7
>
>jm

crafty 19.17 (Mac dual 2GHz G5) takes forever, but finally gets it....
scores are looking good too

White(1): 2r2rk1/p1q1bpp1/1p6/n2R4/8/P4N2/1B2QPPP/5RK1 w
                6     0.06   0.58   1. Re1 Qb7 2. Rd3 Nc6 3. Be5 Rfd8 (s=3)
                6->   0.12   0.58   1. Re1 Qb7 2. Rd3 Nc6 3. Be5 Rfd8 (s=2)
                7     0.23   0.49   1. Re1 Rfe8 2. Qb5 Qc4 3. a4 Qf4 4.
                                    Rd7
                7     0.58   0.59   1. Qe4 Qc4 2. Rd4 Qc2 3. Qxe7 Nc6 4.
                                    Qg5 Qxb2
                7->   0.68   0.59   1. Qe4 Qc4 2. Rd4 Qc2 3. Qxe7 Nc6 4.
                                    Qg5 Qxb2 (s=2)
                8     0.85   0.52   1. Qe4 Qc4 2. Rd4 Qc7 3. Rfd1 Rfd8
                                    4. Ne5 Qb7 5. Rxd8+ Rxd8 6. Rxd8+ Bxd8
                8->   1.47   0.52   1. Qe4 Qc4 2. Rd4 Qc7 3. Rfd1 Rfd8
                                    4. Ne5 Qb7 5. Rxd8+ Rxd8 6. Rxd8+ Bxd8
                                    (s=2)
                9     1.81   0.55   1. Qe4 Qc4 2. Rd4 Qc7 3. Rc1 Qxc1+
                                    4. Bxc1 Rxc1+ 5. Ne1 Bxa3 6. Rd7
                9->   3.57   0.55   1. Qe4 Qc4 2. Rd4 Qc7 3. Rc1 Qxc1+
                                    4. Bxc1 Rxc1+ 5. Ne1 Bxa3 6. Rd7 (s=7)
               10     5.27   0.57   1. Qe4 Rfe8 2. Qg4 Bf8 3. Rd7 Qc4 4.
                                    Qg5 Rc7 5. Rfd1 Re2 (s=6)
               10->  11.91   0.57   1. Qe4 Rfe8 2. Qg4 Bf8 3. Rd7 Qc4 4.
                                    Qg5 Rc7 5. Rfd1 Re2 (s=4)
               11    20.19   0.52   1. Qe4 Qc4 2. Rd4 Qc2 3. Qxe7 Qxb2
                                    4. Rd2 Qb3 5. Re1 Nc4 6. Rd7 Qxa3 7.
                                    Rxa7 (s=3)
               11    30.32   0.53   1. Bxg7 Kxg7 2. Ne5 Rcd8 3. Qg4+ Kh8
                                    4. Nd7 f5 5. Qd4+ Kg8 6. Nxf8 Rxf8
                                    7. Rd7 Qc5
               11->  51.60   0.53   1. Bxg7 Kxg7 2. Ne5 Rcd8 3. Qg4+ Kh8
                                    4. Nd7 f5 5. Qd4+ Kg8 6. Nxf8 Rxf8
                                    7. Rd7 Qc5 (s=3)
               12     1:11   0.35   1. Bxg7 Kxg7 2. Ne5 Rcd8 3. Qg4+ Kh8
                                    4. Nd7 f5 5. Qh5+ Kg7 6. Nxf8 Rxf8
                                    7. a4 Rh8 8. Qxf5 Rxh2 (s=2)
               12     1:21   0.38   1. Qe4 Qc4 2. Rd4 Qc7 3. Rfd1 Rfd8
                                    4. Rxd8+ Rxd8 5. Re1 Bf8 6. Qg4 Nc4
                                    7. Bf6 Rd3
               12     2:16   0.67   1. Re1 Rfe8 2. Re5 Nc6 3. Re4 Qd7 4.
                                    Ne5 Nxe5 5. Rxe5 Rc7 6. Rd1 Qa4 7.
                                    Qf3
               12->   2:53   0.67   1. Re1 Rfe8 2. Re5 Nc6 3. Re4 Qd7 4.
                                    Ne5 Nxe5 5. Rxe5 Rc7 6. Rd1 Qa4 7.
                                    Qf3 (s=3)
               13     3:20   0.71   1. Re1 Rfe8 2. Re5 Nc6 3. Re4 Qd7 4.
                                    Ng5 Red8 5. Qh5 Bxg5 6. Qxg5 f5 7.
                                    Rf4 Rf8 (s=2)
               13->   5:29   0.71   1. Re1 Rfe8 2. Re5 Nc6 3. Re4 Qd7 4.
                                    Ng5 Red8 5. Qh5 Bxg5 6. Qxg5 f5 7.
                                    Rf4 Rf8 (s=4)
               14     7:46   0.73   1. Re1 Rfe8 2. Re5 Nc4 3. Rc1 b5 4.
                                    Nd2 Qb8 5. Rxe7 Rxe7 6. Qxe7 Nxb2 7.
                                    Rxc8+ Qxc8 8. Qxa7 Qc1+ 9. Nf1 Nd3
                                    (s=3)
               14    13:09   0.91   1. Bxg7 Kxg7 2. Ne5 Rfd8 3. Qh5 Bf6
                                    4. Nd7 Rxd7 5. Qg4+ Kf8 6. Rxd7 Qc4
                                    7. Qf3 Qc3 8. Qf5
               14->  15:45   0.91   1. Bxg7 Kxg7 2. Ne5 Rfd8 3. Qh5 Bf6
                                    4. Nd7 Rxd7 5. Qg4+ Kf8 6. Rxd7 Qc4
                                    7. Qf3 Qc3 8. Qf5 (s=2)
               15    40:20   0.72   1. Bxg7 Kxg7 2. Ne5 Rfd8 3. Qh5 Bf6
                                    4. Nd7 Rxd7 5. Qg4+ Kf8 6. Rxd7 Qc4
                                    7. Qf5 Qe6 8. Qxe6 fxe6 9. Rxa7
               15   129:55   1.20   1. Rh5 Qc2 2. Qxe7 Qxb2 3. Ne5 Rc1
                                    4. g4 Rxf1+ 5. Kxf1 Qa1+ 6. Kg2 Qd4
                                    7. Qh4 Qd5+ 8. Nf3 f5 9. Rh8+ Kf7 10.
                                    Qh5+ Ke7 11. Rh7 Qf7
               15-> 156:58   1.20   1. Rh5 Qc2 2. Qxe7 Qxb2 3. Ne5 Rc1
                                    4. g4 Rxf1+ 5. Kxf1 Qa1+ 6. Kg2 Qd4
                                    7. Qh4 Qd5+ 8. Nf3 f5 9. Rh8+ Kf7 10.
                                    Qh5+ Ke7 11. Rh7 Qf7 (s=3)
               16   204:50   1.56   1. Rh5 Qc2 2. Qxe7 Qxb2 3. Ne5 Rc1
                                    4. g4 Rxf1+ 5. Kxf1 Qb1+ 6. Kg2 Qe4+
                                    7. Kg3 Qb1 8. Rh8+ Kxh8 9. Qxf8+ Kh7
                                    10. Qxf7 Qb3+ 11. Qxb3 Nxb3 12. Nc6
                                    a6 13. a4 (s=2)
               16-> 256:46   1.56   1. Rh5 Qc2 2. Qxe7 Qxb2 3. Ne5 Rc1
                                    4. g4 Rxf1+ 5. Kxf1 Qb1+ 6. Kg2 Qe4+
                                    7. Kg3 Qb1 8. Rh8+ Kxh8 9. Qxf8+ Kh7
                                    10. Qxf7 Qb3+ 11. Qxb3 Nxb3 12. Nc6
                                    a6 13. a4 (s=2)
              17   257:00   1/51*  1. Rh5

              time=257:11  cpu=396%  mat=0  n=34456386661  fh=93%  nps=2.23M
              ext-> chk=-1668149291 cap=80233853 pp=526022 1rep=207159675
mate=21474347
              predicted=0  nodes=34456386661  evals=3846325371  50move=0
              endgame tablebase-> probes=0  hits=0
              SMP->  split=2923  stop=642  data=9/64  cpu=1020:25  elap=257:11

White(1): Rh5

Frank



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