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Subject: Re: found this position in the archives

Author: Kolss

Date: 01:22:38 03/25/05

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On March 25, 2005 at 01:23:45, Mike Byrne wrote:

>Crafty version 19.20 (modified)
>Dual Opteron 244 (1.8 Ghz)
>
>
>[d]8/1p6/p4p1p/2p1P2k/5P2/6pP/1P4P1/6K1 w - - 0 1
>White(1):
>White(1): g
>crafty is behind  4.0 on time, reducing by 1/12.
>              time surplus   0.00  time limit 1000:00 (1000:00)
>              depth   time  score   variation (1)
>               11     0.08   0.02   1. e6 Kg6 2. f5+ Kg7 3. Kf1 h5 4. Ke2
>                                    h4 5. Kd3 b6 6. Kc4 a5
>               11->   0.10   0.02   1. e6 Kg6 2. f5+ Kg7 3. Kf1 h5 4. Ke2
>                                    h4 5. Kd3 b6 6. Kc4 a5
>               12     0.11   0.12   1. e6 Kg6 2. f5+ Kg7 3. Kf1 h5 4. Ke2
>                                    h4 5. Kd3 b6 6. Kc4 a5 7. Kd5
>               12->   0.13   0.12   1. e6 Kg6 2. f5+ Kg7 3. Kf1 h5 4. Ke2
>                                    h4 5. Kd3 b6 6. Kc4 a5 7. Kd5 (s=2)
>               13     0.16   0.06   1. e6 Kg6 2. f5+ Kg7 3. Kf1 c4 4. Ke2
>                                    a5 5. Ke3 c3 6. bxc3 a4 7. Kd4 a3
>               13->   0.22   0.06   1. e6 Kg6 2. f5+ Kg7 3. Kf1 c4 4. Ke2
>                                    a5 5. Ke3 c3 6. bxc3 a4 7. Kd4 a3
>               14     0.30     -1   1. e6
>               14     0.38  -0.44   1. e6 Kg6 2. f5+ Kg7 3. Kf1 a5 4. Ke2
>                                    a4 5. Kd3 b5 6. Kc3 b4+ 7. Kc2 Kf8
>                                    8. Kd3 Ke7
>               14->   0.44  -0.44   1. e6 Kg6 2. f5+ Kg7 3. Kf1 a5 4. Ke2
>                                    a4 5. Kd3 b5 6. Kc3 b4+ 7. Kc2 Kf8
>                                    8. Kd3 Ke7 (s=2)
>               15     0.58  -0.66   1. e6 Kg6 2. f5+ Kg7 3. Kf1 a5 4. Ke2
>                                    a4 5. Kd3 b5 6. Kc3 b4+ 7. Kc2 Kf8
>                                    8. h4 a3 9. h5 axb2 10. Kxb2
>               15->   0.67  -0.66   1. e6 Kg6 2. f5+ Kg7 3. Kf1 a5 4. Ke2
>                                    a4 5. Kd3 b5 6. Kc3 b4+ 7. Kc2 Kf8
>                                    8. h4 a3 9. h5 axb2 10. Kxb2 (s=2)
>               16     1.02  -0.64   1. e6 Kg6 2. f5+ Kg7 3. Kf1 a5 4. Ke2
>                                    a4 5. Kd3 b5 6. Kc2 b4 7. Kb1 Kf8 8.
>                                    Ka2 Ke7 9. h4
>               16->   1.19  -0.64   1. e6 Kg6 2. f5+ Kg7 3. Kf1 a5 4. Ke2
>                                    a4 5. Kd3 b5 6. Kc2 b4 7. Kb1 Kf8 8.
>                                    Ka2 Ke7 9. h4
>               17     1.50     -1   1. e6
>               17     2.05  -1.10   1. e6 Kg6 2. f5+ Kg7 3. Kf1 a5 4. Ke2
>                                    a4 5. Kd3 b5 6. Kc2 b4 7. b3 a3 8.
>                                    Kb1 Kf8 9. Ka2 Ke7
>               17->   3.20  -1.10   1. e6 Kg6 2. f5+ Kg7 3. Kf1 a5 4. Ke2
>                                    a4 5. Kd3 b5 6. Kc2 b4 7. b3 a3 8.
>                                    Kb1 Kf8 9. Ka2 Ke7 (s=3)
>               18     4.60  -1.10   1. e6 Kg6 2. f5+ Kg7 3. Kf1 a5 4. Ke2
>                                    a4 5. Kd3 b5 6. Kc2 b4 7. b3 a3 8.
>                                    Kb1 Kf8 9. Ka2 Ke7 10. h4 (s=2)
>               18->   5.27  -1.10   1. e6 Kg6 2. f5+ Kg7 3. Kf1 a5 4. Ke2
>                                    a4 5. Kd3 b5 6. Kc2 b4 7. b3 a3 8.
>                                    Kb1 Kf8 9. Ka2 Ke7 10. h4
>               19     9.16  -1.10   1. e6 Kg6 2. f5+ Kg7 3. Kf1 a5 4. Ke2
>                                    a4 5. Kd3 b5 6. Kc2 b4 7. b3 a3 8.
>                                    Kb1 Kf8 9. h4 h5 10. Ka2 Ke7
>               19     2:51     +1   1. f5!!
>               19     2:58     +3   1. f5!!
>               19     3:01     +M   1. f5!!
>               19     7:25   2.71   1. f5 fxe5 2. h4 b5 3. Kf1 c4 4. Ke2
>                                    e4 5. Ke3 b4 6. Kxe4 a5 7. Kf4 Kxh4
>                                    8. f6 c3 9. bxc3 bxc3 10. Ke3 a4 11.
>                                    Kd3
>               19->   7:25   2.71   1. f5 fxe5 2. h4 b5 3. Kf1 c4 4. Ke2
>                                    e4 5. Ke3 b4 6. Kxe4 a5 7. Kf4 Kxh4
>                                    8. f6 c3 9. bxc3 bxc3 10. Ke3 a4 11.
>                                    Kd3
>               20     7:26     -1   1. f5
>               20     7:37   2.31   1. f5 fxe5 2. h4 b5 3. Kf1 c4 4. Ke2
>                                    e4 5. Ke3 b4 6. Kf4 Kxh4 7. f6 c3 8.
>                                    bxc3 bxc3 9. Ke3 c2 10. Kd2 e3+ 11.
>                                    Kxc2 e2 12. Kd2 Kg5
>               20->   7:46   2.31   1. f5 fxe5 2. h4 b5 3. Kf1 c4 4. Ke2
>                                    e4 5. Ke3 b4 6. Kf4 Kxh4 7. f6 c3 8.
>                                    bxc3 bxc3 9. Ke3 c2 10. Kd2 e3+ 11.
>                                    Kxc2 e2 12. Kd2 Kg5 (s=2)
>               21     8:31   2.69   1. f5 fxe5 2. h4 b5 3. Kf1 c4 4. Ke2
>                                    e4 5. Ke3 b4 6. Kxe4 c3 7. bxc3 b3
>                                    8. Kd3 a5 9. c4 a4 10. Kc3 Kxh4 11.
>                                    f6 Kg4
>               21->   8:49   2.69   1. f5 fxe5 2. h4 b5 3. Kf1 c4 4. Ke2
>                                    e4 5. Ke3 b4 6. Kxe4 c3 7. bxc3 b3
>                                    8. Kd3 a5 9. c4 a4 10. Kc3 Kxh4 11.
>                                    f6 Kg4
>?              22     9:00    1/8*  1. f5
>White(1): ?
>              time=9:12  cpu=198%  mat=-1  n=2170080576  fh=92%  nps=3.93M
>              ext-> chk=317139551 cap=4736962 pp=9151973 1rep=61051553 mate=3696
>03
>              predicted=0  nodes=2170080576  evals=1253580113  50move=0
>              endgame tablebase-> probes=10648  hits=392
>              SMP->  split=11294  stop=1102  data=11/64  cpu=18:16  elap=9:12
>
>White(1): f5
>              time used:   9:12
>Black(1):

Hehe - finally a position where Ikarus (V0.35b) does well (in fact, I used this
position in the past to test it, so that partially explains this...). On a
P4-2.4 GHz, 64 MB Hash, 5-piece TB:

     18(35).01   00:00:02.3    +0.00    1. e6 Kg6 2. f5+ Kg7 3. Kf1 b5 4. Ke2 c4
5. Ke3 b4 6. Kd4 c3 7. bxc3 b3 8. Kd3 a5 9. c4 a4 10. c5
     18(39).06   00:00:03.5    +0.29++  1. f5! fxe5 2. h4 b6 3. Kf1 c4 4. Ke2 c3
5. bxc3 e4 6. Ke3 a5 7. Kf4 e3 8. Kxg3 a4 9. Kh3
     18(39).06   00:00:04.0    +4.80    1. f5 fxe5 2. h4 b5 3. Kf1 c4 4. Ke2 b4
5. Kf3 Kxh4 6. f6 c3 7. bxc3 bxc3 8. Ke2 c2 9. Kd2 Kg5
  -> 18(39).08   00:00:04.0    +4.80    1. f5 fxe5 2. h4 b5 3. Kf1 c4 4. Ke2 b4
5. Kf3 Kxh4 6. f6 c3 7. bxc3 bxc3 8. Ke2 c2

The score stays stable after that (actually goes up to +5 after about a minute).

Best regards - Munjong.



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