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Subject: Re: Test position -- Crafty 19.10 (ply 12 -- 5.5 secs)

Author: Frank E. Oldham

Date: 18:54:45 04/29/04

Go up one level in this thread


On April 29, 2004 at 16:32:09, Kim Roper Jensen wrote:

>[D] 2r2rk1/pb2b1pp/1q3p2/5B1Q/1P1pN3/P5P1/5P1P/R3R1K1 b - - 1 21
>
>From a local club game, how long to see white is winning ?
>
>takes crafty 19.1 ( 667Mhz/freebsd ) 13 ply to get a winning score (above 2)

crafty19.10f is a bit quicker -- score goes up in the 12th ply

White(1): setboard 2r2rk1/pb2b1pp/1q3p2/5B1Q/1P1pN3/P5P1/5P1P/R3R1K1 b
Black(1): go
              clearing hash tables
              time surplus   0.00  time limit 1666:39 (1666:39)
              depth   time  score   variation (1)
starting thread 1
                7     0.07   0.50   1. ... g6 2. Qg4 Rc6 3. Nd2 Qd8 4.
                                    Be6+ Kh8 5. Ne4
                7->   0.09   0.50   1. ... g6 2. Qg4 Rc6 3. Nd2 Qd8 4.
                                    Be6+ Kh8 5. Ne4
                8     0.25     ++   1. ... g6!!
                8->   0.30   0.11   1. ... g6 2. Qg4 Rc6 3. Nd2 Qd8 4.
                                    Be6+ Kh8 5. Ne4 (s=3)
                9     0.68   0.05   1. ... g6 2. Qg4 Rc7 3. Nd2 Qc6 4.
                                    Be6+ Kg7 5. f3 Rd8 6. Ne4 (s=2)
                9->   0.75   0.05   1. ... g6 2. Qg4 Rc7 3. Nd2 Qc6 4.
                                    Be6+ Kg7 5. f3 Rd8 6. Ne4
               10     1.23   0.06   1. ... g6 2. Qg4 Rc7 3. Nd2 Rd8 4.
                                    Rac1 Rxc1 5. Be6+ Kf8 6. Rxc1 Qd6
               10->   1.37   0.06   1. ... g6 2. Qg4 Rc7 3. Nd2 Rd8 4.
                                    Rac1 Rxc1 5. Be6+ Kf8 6. Rxc1 Qd6
               11     2.89     --   1. ... g6
               11     3.37   0.46   1. ... g6 2. Bxg6 hxg6 3. Qxg6+ Kh8
                                    4. Ng5 fxg5 5. Qh5+ Kg7 6. Rxe7+ Kf6
                                    7. Qh7 Bc6 8. Qg7+ Kf5 9. Re5+ Kg4
                                    10. Qxg5+ Kh3
               11->   3.96   0.46   1. ... g6 2. Bxg6 hxg6 3. Qxg6+ Kh8
                                    4. Ng5 fxg5 5. Qh5+ Kg7 6. Rxe7+ Kf6
                                    7. Qh7 Bc6 8. Qg7+ Kf5 9. Re5+ Kg4
                                    10. Qxg5+ Kh3
               12     4.23     --   1. ... g6
               12     5.47   2.29   1. ... g6 2. Bxg6 hxg6 3. Qxg6+ Kh8
                                    4. Ng5 fxg5 5. Qh5+ Kg8 6. Rxe7 Be4
                                    7. Rxe4 Qf6 8. Rf1 d3
               12->  18.29   2.29   1. ... g6 2. Bxg6 hxg6 3. Qxg6+ Kh8
                                    4. Ng5 fxg5 5. Qh5+ Kg8 6. Rxe7 Be4
                                    7. Rxe4 Qf6 8. Rf1 d3 (s=9)
               13    21.02   2.27   1. ... g6 2. Bxg6 hxg6 3. Qxg6+ Kh8
                                    4. Ng5 fxg5 5. Qh5+ Kg8 6. Rxe7 Be4
                                    7. Rxe4 Qf6 8. Ra2 d3 9. Rd2 Rc1+ 10.
                                    Kg2 (s=8)
               13->  32.08   2.27   1. ... g6 2. Bxg6 hxg6 3. Qxg6+ Kh8
                                    4. Ng5 fxg5 5. Qh5+ Kg8 6. Rxe7 Be4
                                    7. Rxe4 Qf6 8. Ra2 d3 9. Rd2 Rc1+ 10.
                                    Kg2 (s=3)
               14    35.26     --   1. ... g6
               14    41.67   2.89   1. ... g6 2. Bxg6 hxg6 3. Qxg6+ Kh8
                                    4. Ng5 fxg5 5. Qh5+ Kg8 6. Rxe7 Be4
                                    7. Rxe4 Qf6 8. Rf1 Rcd8 9. Rg4 Rd5
                                    10. a4 (s=2)
               14->   2:20   2.89   1. ... g6 2. Bxg6 hxg6 3. Qxg6+ Kh8
                                    4. Ng5 fxg5 5. Qh5+ Kg8 6. Rxe7 Be4
                                    7. Rxe4 Qf6 8. Rf1 Rcd8 9. Rg4 Rd5
                                    10. a4 (s=12)
?              15     2:20   1/40*  1. ... g6
Black(0): ?
              time=2:22  cpu=396%  mat=0  n=373713287  fh=92%  nps=2.62M
              ext-> chk=13869294 cap=836871 pp=579028 1rep=1770986 mate=189208
              predicted=0  nodes=373713287  evals=88424624
              endgame tablebase-> probes=0  hits=0
              SMP->  split=1698  stop=263  data=9/32  cpu=9:25  elap=2:22

Frank



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