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Subject: Re: KB*KP* -> some first promising results

Author: Tim Foden

Date: 01:08:40 02/02/05

Go up one level in this thread


On February 01, 2005 at 16:44:48, Thomas Mayer wrote:

>Hi,
>
>I had promised some more interesting results of my experiments with
>KB*KP* endgames... The following analysis are produced by an alpha
>version of Quark after implementing KBKP bitbase, a recognizer and
>a special endgame routine for KB*KP* endgames. 5-men tablebases are
>disabled.
>The implementation has definitely NO influence at all to Quarks
>overall speed.
>
>[D] 8/p1p5/3p4/p3p3/k4p2/2K3pB/7p/8 w - - 0 1

Just as a contrast, GLC 3.01.2.2 doesn't have any of this info, and thinks this
is -12 :)...

>anal
 Game stage: Endgame
 Current eval: -11.518
 Ply   Time   Score   Nodes  Principal variation
  7   0.000 -11.535    8495  Bg2 Kb5 2. Kd3 a4 3. Ke4 c5
  7   0.010 -11.535   12107  Bg2 Kb5 2. Kd3 a4 3. Ke4 c5
  8   0.020 -11.703   23228  Bg2 Kb5 2. Bf1+ Kc5 3. Bg2 a4 4. Kb2 d5
  8   0.020 -11.595   27819  Bd7+ Ka3 2. Bc6 a4 3. Bh1 a5 4. Kc4 Kb2
  8   0.020 -11.595   29893  Bd7+ Ka3 2. Bc6 a4 3. Bh1 a5 4. Kc4 Kb2
  9   0.030 -11.531   40744  Bd7+ Ka3 2. Bc6 a4 3. Bh1 a5 4. Kc4 Kb2 5. Kb5 a3
                               6. Kxa5
  9   0.040 -11.531   51743  Bd7+ Ka3 2. Bc6 a4 3. Bh1 a5 4. Kc4 Kb2 5. Kb5 a3
                               6. Kxa5
 10   0.050 -11.531   64583  Bd7+ Ka3 2. Bc6 a4 3. Bh1 a5 4. Kc4 Kb2 5. Kb5 a3
                               6. Kxa5
 10   0.070 -11.531   82199  Bd7+ Ka3 2. Bc6 a4 3. Bh1 a5 4. Kc4 Kb2 5. Kb5 a3
                               6. Kxa5
 11   0.100 -11.607  111264  Bd7+ Ka3 2. Bc6 a4 3. Bh1 a5 4. Bg2 Ka2 5. Kc4 a3
                               6. Kb5 Kb3 7. Kxa5
 11   0.130 -11.607  151256  Bd7+ Ka3 2. Bc6 a4 3. Bh1 a5 4. Bg2 Ka2 5. Kc4 a3
                               6. Kb5 Kb3 7. Kxa5
 12   0.160 -11.607  187427  Bd7+ Ka3 2. Bc6 a4 3. Bh1 a5 4. Bg2 Ka2 5. Kc4 a3
                               6. Kb5 Kb3 7. Kxa5
 12   0.210 -11.607  245995  Bd7+ Ka3 2. Bc6 a4 3. Bh1 a5 4. Bg2 Ka2 5. Kc4 a3
                               6. Kb5 Kb3 7. Kxa5
 13   0.300 -11.496  342598  Bd7+ Ka3 2. Bc6 a4 3. Bh1 a5 4. Bd5 c5 5. Bg2 Ka2
                               6. Kc4 a3 7. Kd5 Kb3 8. Kxd6
 13   0.391 -11.496  447192  Bd7+ Ka3 2. Bc6 a4 3. Bh1 a5 4. Bd5 c5 5. Bg2 Ka2
                               6. Kc4 a3 7. Kd5 Kb3 8. Kxd6
 14   0.491 -11.496  567379  Bd7+ Ka3 2. Bc6 a4 3. Bh1 a5 4. Bd5 c5 5. Bg2 Ka2
                               6. Kc4 a3 7. Kd5 Kb3 8. Kxd6
 14   0.631 -11.496  720953  Bd7+ Ka3 2. Bc6 a4 3. Bh1 a5 4. Bd5 c5 5. Bg2 Ka2
                               6. Kc4 a3 7. Kd5 Kb3 8. Kxd6
 15   1.462 -11.896 1670941  Bd7+ {--} Ka3 2. Bc6 a4 3. Bh1 a5 4. Bd5 c5 5. Bg2
                               Ka2 6. Kc4 a3 7. Kd5 Kb3 8. Kxd6 a2 9. Kxe5
                               a1=Q+
 15   1.542 -11.895 1754345  Bd7+ {++} Ka3 2. Bc6 a4 3. Bh1 a5 4. Bd5 c5 5. Bg2
                               Ka2 6. Bd5+ Ka1 7. Bf3 a3 8. Kb3 a2 {ht} 9. Be4
 15   2.804 -11.905 3595726  Bd7+ Ka3 2. Bc6 a4 3. Bh1 a5 4. Bd5 c5 5. Bg2 Ka2
                               6. Bd5+ Ka1 7. Kc4 {ht} Kb2
 15   3.014 -11.905 3849168  Bd7+ Ka3 2. Bc6 a4 3. Bh1 a5 4. Bd5 c5 5. Bg2 Ka2
                               6. Bd5+ Ka1 7. Kc4 {ht} Kb2
 16   3.545 -11.987 4478533  Bd7+ Ka3 2. Bc6 a4 3. Bh1 a5 4. Bc6 Ka2 5. Bd5+
                               Ka1 6. Bc6 a3 7. Kb3 a2 8. Ka3 f3 9. Bxf3 Kb1
 16   4.086 -11.987 5114794  Bd7+ Ka3 2. Bc6 a4 3. Bh1 a5 4. Bc6 Ka2 5. Bd5+
                               Ka1 6. Bc6 a3 7. Kb3 a2 8. Ka3 f3 9. Bxf3 Kb1
 17   7.401 -12.387 8492557  Bd7+ {--} Ka3 2. Bc6 a4 3. Bh1 a5 4. Bc6 Ka2 5.
                               Bd5+ Ka1 6. Bc6 a3 7. Kb3 a2 8. Ka3 a4 9. Be4 c5
                               10. Bg2 f3
 17   8.172 -12.386 9294098  Bd7+ {++} Ka3 2. Bc6 a4 3. Kc2 {ht} Kb4
 17  10.215 -12.486  12466k  Bd7+ Ka3 2. Bc6 a4 3. Bg2 c5 4. Bd5 {ht} a5
 17  10.805 -12.486  13194k  Bd7+ Ka3 2. Bc6 a4 3. Bg2 c5 4. Bd5 {ht} a5
 18  11.567 -12.486  14131k  Bd7+ Ka3 2. Bc6 a4 3. Bg2 c5 4. Bd5 a5 5. Bg2 Ka2
                               6. Bd5+ Ka1 7. Bg2 a3 8. Kb3 a2 9. Be4 d5 10.
                               Bxd5 Kb1
 18  11.957 -12.486  14596k  Bd7+ Ka3 2. Bc6 a4 3. Bg2 c5 4. Bd5 a5 5. Bg2 Ka2
                               6. Bd5+ Ka1 7. Bg2 a3 8. Kb3 a2 9. Be4 d5 10.
                               Bxd5 Kb1
 19  13.289 -12.086  16142k  Bd7+ {++} Ka3 2. Bc6 a4 3. Bg2 c5 4. Bd5 a5 5. Bg2
                               Ka2 6. Bd5+ Ka1 7. Kc2 a3 8. Kc1 a2 9. Kc2 h1=Q
                               10. Bxh1 e4 11. Bxe4 f3
 19  14.491 -12.087  17638k  Bd7+ {--} Ka3 2. Bc6 a4 3. Bg2 c5 4. Bd5 a5 5. Bg2
                               Ka2 6. Bd5+ Ka1 7. Kc2 a3 8. Kc1 a2 9. Kc2 a4
                               10. Be4 {ht} a3
 19  15.222 -12.047  18560k  Bd7+ Ka3 2. Bc6 a4 3. Bg2 c5 4. Bd5 a5 5. Bg2 Ka2
                               6. Bd5+ Ka1 7. Kc2 a3 8. Kc1 a2 9. Kc2 a4 10.
                               Be4 d5 11. Bxd5 a3
 19  15.222 -12.047  18560k  Bd7+ Ka3 2. Bc6 a4 3. Bg2 c5 4. Bd5 a5 5. Bg2 Ka2
                               6. Bd5+ Ka1 7. Kc2 a3 8. Kc1 a2 9. Kc2 a4 10.
                               Be4 d5 11. Bxd5 a3
 20  17.505 -12.447  21372k  Bd7+ {--} Ka3 2. Bc6 a4 3. Bg2 c5 4. Bd5 a5 5. Bg2
                               Ka2 6. Bd5+ Ka1 7. Kc2 a3 8. Kc1 a2 9. Kc2 a4
                               10. Be4 a3 11. Kc3 f3
 Generating internal KP-K end-game table...
 Done (0.171 secs)
 20  19.438 -12.446  23451k  Bd7+ {++} Ka3 2. Bc6 a4 3. Bg2 c5 4. Bd5 a5 5. Bg2
                               Ka2 6. Bd5+ Ka1 7. Kc2 a3 8. Kc1 a2 9. Kc2 a4
                               10. Be4 a3 11. Kc3 f3 12. Bxf3
 20  26.418 -12.308  32513k  Bd7+ Ka3 2. Bc6 a4 3. Bg2 Ka2 4. Be4 c5 5. Bd5+
                               Ka1 6. Bh1 a3 7. Bd5 a2 8. Kc2 a5 9. Be4 a4 10.
                               Bd5 {ht} c4
 20  26.418 -12.308  32513k  Bd7+ Ka3 2. Bc6 a4 3. Bg2 Ka2 4. Be4 c5 5. Bd5+
                               Ka1 6. Bh1 a3 7. Bd5 a2 8. Kc2 a5 9. Be4 a4 10.
                               Bd5 {ht} c4
 21  33.769 -12.308  41411k  Bd7+ Ka3 2. Bc6 a4 3. Bg2 Ka2 4. Be4 c5 5. Bd5+
                               Ka1 6. Bh1 a3 7. Bd5 a2 8. Kc2 a5 9. Be4 a4 10.
                               Bd5 {ht} c4
 21  35.431 -12.308  43424k  Bd7+ Ka3 2. Bc6 a4 3. Bg2 Ka2 4. Be4 c5 5. Bd5+
                               Ka1 6. Bh1 a3 7. Bd5 a2 8. Kc2 a5 9. Be4 a4 10.
                               Bd5 {ht} c4
 22 1:02.43 -12.047  75700k  Bd7+ Ka3 2. Bc6 a4 3. Bg2 Ka2 4. Kc2 c5 5. Bd5+
                               Ka3 6. Kc3 a5 {ht} 7. Bg2
 22 1:05.72 -12.047  79635k  Bd7+ Ka3 2. Bc6 a4 3. Bg2 Ka2 4. Kc2 c5 5. Bd5+
                               Ka3 6. Kc3 a5 {ht} 7. Bg2
Analyse>exit
 local:  t=1:09.18  nps=1209352.6  n=83661805 (44.2% / 55.8%)
 total:  t=1:09.18  nps=1209352.6  n=83661805
 stats:  fh=92.9%/3.37%/1.178%  draws=108239
 trans:  probes=35587860  hits=13523655 (38.00%)  draft=9619573 (27.03%)
 tcuts:  exact=8998 (0.03%)  upper=4988328 (14.02%)  lower=3027446 (8.51%)
 tstor:  exact=6523 (0.05%)  upper=7118413 (59.65%)  lower=4808418 (40.29%)
 ext:  check=4696850  recap=1108  ppush=1154192  1rep=205060  thrt=503979
 q-moves:  gen=11184613  tested=8805959  made/un=3844572  max-dep=6
 max eval diff:  part-1=10.109  part-2=1.886


>Let's go a bit deeper in the endgame:
>
>So we get this position:
>
>[D] 8/8/3p4/p1p1p3/5p2/6p1/p1K4p/k6B w - - 0 9

Again GLC 3.01.2.2... this time it sees the draw. But is Bd5 also correct here?

>anal
 Game stage: Endgame
 Current eval: -12.487
 Ply   Time   Score   Nodes  Principal variation
  6   0.010 -13.329    5925  Kc1 a4 2. Be4 a3 3. Bh1 {ht} c4
  6   0.010 -12.709    7596  Bf3 {++} a4 2. Be4 a3 3. Kb3 c4+ 4. Kxa3
  6   0.020 -12.710    9796  Bf3 {--} a4 2. Be4 a3 3. Kb3 f3
  6   0.020 -12.047   10305  Bf3 a4 2. Be4 a3 3. Kb3 d5 4. Bxd5
  6   0.020 -12.047   10317  Bf3 a4 2. Be4 a3 3. Kb3 d5 4. Bxd5
  7   0.030 -12.447   15060  Bf3 {--} a4 2. Be4 a3 3. Kb3 f3
  7   0.030 -12.446   15860  Bf3 {++} a4 2. Be4 a3 3. Kb3 f3 4. Bxf3
  7   0.030 -12.058   16752  Bf3 a4 2. Be4 a3 3. Kb3 c4+ {ht} 4. Kxa3
  7   0.040 -12.058   16764  Bf3 a4 2. Be4 a3 3. Kb3 c4+ {ht} 4. Kxa3
  8   0.050 -12.458   28349  Bf3 {--} a4 2. Be4 a3 3. Kb3 f3 4. Bxf3 Kb1
  8   0.050 -12.457   30607  Bf3 {++} a4 2. Be4 a3 3. Bf3 c4 4. Be4 f3 5. Bxf3
  8   0.060 -12.420   32156  Bf3 a4 2. Be4 c4 3. Bf3 c3 4. Kxc3 Kb1
  8   0.060 -12.420   32168  Bf3 a4 2. Be4 c4 3. Bf3 c3 4. Kxc3 Kb1
  9   0.070 -12.308   39078  Bf3 a4 2. Be4 c4 3. Bh1 a3 4. Bf3 d5 5. Bxd5
  9   0.090 -12.020   63688  Kb3 {++} c4+ 2. Kc2 a4 3. Bf3 a3 4. Be4 f3 5. Bxf3
                               e4 6. Bxe4
  9   0.110 -10.933   73419  Kb3 c4+ 2. Kc2 a4 3. Bf3 a3 4. Be4 d5 5. Bxd5 e4
                               6. Bxe4
  9   0.120 -10.933   80936  Kb3 c4+ 2. Kc2 a4 3. Bf3 a3 4. Be4 d5 5. Bxd5 e4
                               6. Bxe4
 10   0.140 -11.333  104452  Kb3 {--} c4+ 2. Kc2 a4 3. Bf3 a3 4. Be4 d5 5. Bxd5
                               e4
 10   0.160 -11.332  115236  Kb3 {++} c4+ 2. Kc2 a4 3. Bf3 a3 4. Be4 d5 5. Bxd5
                               e4 6. Bxe4
 10   0.170 -11.300  128681  Kb3 Kb1 2. Be4+ Kc1 3. Kxa2 c4 4. Ka3 c3 5. Ka4 c2
                               6. Kxa5 Kd2
 10   0.180 -11.300  128693  Kb3 Kb1 2. Be4+ Kc1 3. Kxa2 c4 4. Ka3 c3 5. Ka4 c2
                               6. Kxa5 Kd2
 11   0.201 -10.933  151480  Bd5 c4 2. Bh1 {ht} a4
 11   0.211 -10.933  157438  Bd5 c4 2. Bh1 {ht} a4
 12   0.241 -11.333  192003  Bd5 {--} c4 2. Bh1 a4 3. Bf3 a3 4. Be4 d5 5. Bxd5
                               c3 6. Kxc3 Kb1
 12   0.251 -11.332  205334  Bd5 {++} c4 2. Bh1 a4 3. Bf3 a3 4. Be4 d5 5. Bxd5
                               c3 6. Be4 f3 7. Bxf3
 12   0.271 -10.899  215312  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4
 12   0.271 -10.899  215324  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4
 13   0.311 -11.299  258612  Bd5 {--} c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3
                               d5 6. Bxd5 e4
 13   0.331 -11.298  279415  Bd5 {++} c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3
                               d5 6. Bxd5 e4 7. Bxe4
 13   0.351 -10.899  294586  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4
 13   0.351 -10.899  294598  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4
 14   0.391 -10.499  329703  Bd5 {++} c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3
                               d5 6. Bxd5 e4 7. Bxe4 f3 8. Bxf3
 14   0.441  -9.233  382654  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bd5 e4 6.
                               Bxe4 d5 7. Bxd5 f3 8. Bxf3
 14   0.471  -9.233  411861  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bd5 e4 6.
                               Bxe4 d5 7. Bxd5 f3 8. Bxf3
 15   0.561  -9.633  528546  Bd5 {--} c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bd5
                               e4 6. Bxe4 d5 7. Bxd5 f3
 15   0.621  -9.632  587610  Bd5 {++} c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bd5
                               e4 6. Bxe4 d5 7. Bxd5 f3 8. Bxf3
 15   0.651  -9.233  620270  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bd5 e4 6.
                               Bxe4 d5 7. Bxd5 f3 8. Bxf3
 15   0.651  -9.233  620282  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bd5 e4 6.
                               Bxe4 d5 7. Bxd5 f3 8. Bxf3
 16   0.751  -8.833  711149  Bd5 {++} c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bd5
                               e4 6. Bxe4 d5 7. Bxd5 f3 8. Bxf3 g2 9. Bxg2
 16   0.851  -6.329  832954  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bd5 e4 6.
                               Bxe4 d5 7. Bxd5 f3 8. Bxf3 g2 9. Bxg2
 16   0.902  -6.329  890079  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bd5 e4 6.
                               Bxe4 d5 7. Bxd5 f3 8. Bxf3 g2 9. Bxg2
 17   1.102  -6.532 1136830  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Kc1 f3 6.
                               Bxf3 e4 7. Bxe4 d5 8. Bxd5 h1=B 9. Bxh1
 17   1.172  -6.532 1237111  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Kc1 f3 6.
                               Bxf3 e4 7. Bxe4 d5 8. Bxd5 h1=B 9. Bxh1
 18   1.392  -6.132 1487936  Bd5 {++} c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Kc1
                               f3 6. Bxf3 e4 7. Bxe4 d5 8. Bxd5 h1=Q+ 9. Bxh1
                               c2 10. Kxc2 g2 11. Bxg2
 18   1.603  -4.186 1744548  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1
 18   1.663  -4.186 1825361  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1
 19   2.023  -3.786 2277342  Bd5 {++} c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3
                               d5 6. Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q
                               10. Bxh1
 19   2.253  +0.000 2583163  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1
 19   2.314  +0.000 2672362  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1
 20   2.944  +0.000 3524743  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1
 20   3.015  +0.000 3630364  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1
 21   3.906  +0.000 4842801  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1 {ht}
 21   4.006  +0.000 4988031  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1 {ht}
 22   5.428  +0.000 6825833  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1 {ht}
 22   5.548  +0.000 7009259  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1 {ht}
 23   7.982  +0.000 9763058  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1 {ht}
 23   8.142  +0.000  10005k  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1 {ht}
 24  11.006  +0.000  13945k  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1 {ht}
 24  11.216  +0.000  14278k  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1 {ht}
 25  15.202  +0.000  19841k  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1 {ht}
 25  15.493  +0.000  20288k  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1 {ht}
 26  21.201  +0.000  28273k  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1 {ht}
 26  21.651  +0.000  28939k  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1 {ht}
 27  29.232  +0.000  39715k  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1 {ht}
 27  29.823  +0.000  40600k  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1 {ht}
 28  40.318  +0.000  55227k  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1 {ht}
 28  41.220  +0.000  56569k  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1 {ht}
 29  55.720  +0.000  77553k  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1 {ht}
 29  57.062  +0.000  79499k  Bd5 c4 2. Bh1 a4 3. Bf3 a3 4. Be4 c3 5. Bf3 d5 6.
                               Bxd5 e4 7. Bxe4 f3 8. Bxf3 g2 9. Bxg2 h1=Q 10.
                               Bxh1 {ht}
Analyse>exit
 local:  t=58.224  nps=1394795.3  n=81210564 (53.1% / 46.9%)
 total:  t=2:07.40  nps=1294101.1  n=164872369
 stats:  fh=97.0%/1.19%/0.578%  draws=490921
 trans:  probes=42596650  hits=18651755 (43.79%)  draft=12665005 (29.73%)
 tcuts:  exact=1254 (0.00%)  upper=5588687 (13.12%)  lower=6721132 (15.78%)
 tstor:  exact=592 (0.01%)  upper=4387470 (43.06%)  lower=5801453 (56.94%)
 ext:  check=1625735  recap=1111  ppush=284137  1rep=177913  thrt=623763
 q-moves:  gen=11180939  tested=7588815  made/un=48422  max-dep=5
 max eval diff:  part-1=11.704  part-2=1.511


Cheers, Tim.



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