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Subject: Re: Test Move ....#1767

Author: Dann Corbit

Date: 16:31:38 03/18/02

Go up one level in this thread


On March 18, 2002 at 19:24:01, Slater Wold wrote:

>On March 18, 2002 at 18:17:38, Art Basham wrote:
>
>>r1bq1rk1/1p2bppp/p3p3/n3P3/4N3/1P1P1N2/PB4PP/R3QR1K w - -
>>
>>White played Nf6+...!! ...if gxf6, 2. Qg3+ etc,
>>
>>It took my old Mach 3 about 3 hrs. to find this one...
>>
>>from the Encl. of Middle Games
>
>Crafty 18.13:
>
>Black(1): setboard r1bq1rk1/1p2bppp/p3p3/n3P3/4N3/1P1P1N2/PB4PP/R3QR1K w - -
>White(1): go
>              time surplus   0.00  time limit 3:00 (3:00)
>         nss  depth   time  score   variation (1)
>         (3)    6     0.08   0.32   1. Rd1 f5 2. Nd6 f4 3. Rc1 Bd7
>         (2)    6->   0.17   0.32   1. Rd1 f5 2. Nd6 f4 3. Rc1 Bd7
>                7     0.30   0.30   1. Rd1 Nc6 2. Qf2 f6 3. exf6 gxf6 4.
>                                    Qg3+ Kh8 5. Nfg5
>                7     0.64   0.55   1. Nd4 Qd5 2. Qg3 Kh8 3. Nd6 f6 4.
>                                    Ne2 fxe5 5. Bxe5
>                7->   0.72   0.55   1. Nd4 Qd5 2. Qg3 Kh8 3. Nd6 f6 4.
>                                    Ne2 fxe5 5. Bxe5
>                8     1.49   0.58   1. Nd4 Bd7 2. Rc1 Rc8 3. Rxc8 Bxc8
>                                    4. Nd6 Bxd6 5. exd6 Bd7
>                8->   1.83   0.58   1. Nd4 Bd7 2. Rc1 Rc8 3. Rxc8 Bxc8
>                                    4. Nd6 Bxd6 5. exd6 Bd7
>                9     2.84   0.60   1. Nd4 Bd7 2. Rc1 Bh4 3. Qe3 Rc8 4.
>                                    Rxc8 Bxc8 5. Qh3 Bd7
>                9->   3.70   0.60   1. Nd4 Bd7 2. Rc1 Bh4 3. Qe3 Rc8 4.
>                                    Rxc8 Bxc8 5. Qh3 Bd7
>               10    13.61   0.77   1. Nd4 h6 2. Qg3 b5 3. Nf6+ Kh8 4.
>                                    Nh5 g6 5. Nf6 Bxf6 6. Rxf6 Qd5
>               10->  14.63   0.77   1. Nd4 h6 2. Qg3 b5 3. Nf6+ Kh8 4.
>                                    Nh5 g6 5. Nf6 Bxf6 6. Rxf6 Qd5
>               11    29.80   0.61   1. Nd4 f5 2. exf6 gxf6 3. b4 e5 4.
>                                    bxa5 exd4 5. Qg3+ Kh8 6. Qf2 Qxa5 7.
>                                    Bxd4
>               11->  35.95   0.61   1. Nd4 f5 2. exf6 gxf6 3. b4 e5 4.
>                                    bxa5 exd4 5. Qg3+ Kh8 6. Qf2 Qxa5 7.
>                                    Bxd4
>               12    49.38   0.85   1. Nd4 f5 2. exf6 gxf6 3. Ng3 Qd5 4.
>                                    b4 Nc6 5. Ngf5 Kf7 6. Nxc6 Qxc6 7.
>                                    Rc1 Qd5 8. Nxe7 Kxe7
>               12->  53.39   0.85   1. Nd4 f5 2. exf6 gxf6 3. Ng3 Qd5 4.
>                                    b4 Nc6 5. Ngf5 Kf7 6. Nxc6 Qxc6 7.
>                                    Rc1 Qd5 8. Nxe7 Kxe7
>              time=3:00  cpu=199%  mat=0  n=264306467  fh=93%  nps=1466k
>              ext-> chk=6246289 cap=810430 pp=180769 1rep=728897 mate=66447
>              predicted=0  nodes=264306467  evals=0
>              endgame tablebase-> probes done=0  successful=0
>              hashing-> trans/ref=25%  pawn=99%  used=99%
>              SMP->  split=509  stop=63  data=7/32  cpu=5:59  elap=3:00
>
>Crafty 18.13 with SE:
>
>Black(1): setboard r1bq1rk1/1p2bppp/p3p3/n3P3/4N3/1P1P1N2/PB4PP/R3QR1K w - -
>White(1):
>White(1): go
>              clearing hash tables
>              time surplus   0.00  time limit 3:00 (3:00)
>         nss  depth   time  score   variation (1)
>starting thread 1
>         (3)    6     0.10   0.32   1. Rd1 f5 2. Nd6 f4 3. Rc1 Bd7
>         (2)    6->   0.19   0.32   1. Rd1 f5 2. Nd6 f4 3. Rc1 Bd7
>                7     0.35   0.27   1. Rd1 f5 2. exf6 gxf6 3. Qh4 Bd7 4.
>                                    Qg4+ Kh8 5. Nfg5 e5
>                7     0.74   0.55   1. Nd4 Qd5 2. Qg3 Kh8 3. Nd6 f6 4.
>                                    Ne2 fxe5 5. Bxe5
>                7->   0.94   0.55   1. Nd4 Qd5 2. Qg3 Kh8 3. Nd6 f6 4.
>                                    Ne2 fxe5 5. Bxe5
>                8     1.69   0.58   1. Nd4 Bd7 2. Rc1 Rc8 3. Rxc8 Bxc8
>                                    4. Nd6 Bxd6 5. exd6 Bd7
>                8->   2.77   0.58   1. Nd4 Bd7 2. Rc1 Rc8 3. Rxc8 Bxc8
>                                    4. Nd6 Bxd6 5. exd6 Bd7
>                9     4.27   0.60   1. Nd4 Bd7 2. Rc1 Bh4 3. Qe3 Rc8 4.
>                                    Rxc8 Bxc8 5. Qh3 Bd7
>         (3)    9->   9.05   0.60   1. Nd4 Bd7 2. Rc1 Bh4 3. Qe3 Rc8 4.
>                                    Rxc8 Bxc8 5. Qh3 Bd7
>         (2)   10    27.91   0.81   1. Nd4 Rb8 2. Qg3 Bd7 3. Bc3 Kh8 4.
>                                    b4 Nc6 5. Nxc6 Bxc6 6. Nd6
>               10->  31.44   0.81   1. Nd4 Rb8 2. Qg3 Bd7 3. Bc3 Kh8 4.
>                                    b4 Nc6 5. Nxc6 Bxc6 6. Nd6
>               11     1:24   0.67   1. Nd4 f5 2. Nd6 Bd7 3. Qg3 b6 4. Bc3
>                                    Nc6 5. Rac1 Qc7 6. Bd2 Bxd6 7. exd6
>               11->   2:06   0.67   1. Nd4 f5 2. Nd6 Bd7 3. Qg3 b6 4. Bc3
>                                    Nc6 5. Rac1 Qc7 6. Bd2 Bxd6 7. exd6
>              time=3:00  cpu=216%  mat=0  n=259455320  fh=92%  nps=1439k
>              ext-> chk=6147803 cap=828480 pp=165671 1rep=721793 mate=46247 sing
>=22
>              predicted=0  nodes=259455320  evals=0
>              endgame tablebase-> probes done=0  successful=0
>              hashing-> trans/ref=29%  pawn=99%  used=99%
>              SMP->  split=1602  stop=442  data=6/32  cpu=6:30  elap=3:00
>
>The SE version returns a more "honest" score.  I believe that the SE version
>would find the correct move first.  Just not sure how long that would take.  ;)

Apocalypse.epd (Line 6201):
[D]r1bq1rk1/1p2bppp/p3p3/n3P3/4N3/1P1P1N2/PB4PP/R3QR1K w - - acd 13; ce 117; pv
Nf6+ gxf6 Qg3+ Kh8 exf6 Bxf6 Ne5 Nxb3 Rxf6 Qxf6 Nxf7+ Rxf7 Bxf6+ Rxf6 axb3 Bd7
Qd6 Rd8 Kg1; pm Nf6+; bm Nf6+; id "CCC-II No.9";



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