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Subject: Re: And here's another problem for you (Knightshead4mate Revisited)!

Author: Tim Foden

Date: 01:55:42 01/22/01

Go up one level in this thread


On January 21, 2001 at 18:02:44, Paul wrote:

>Here's a problem for you in return my friend, it's not mine however:
>
>[D]5n2/B3K3/2p2Np1/4k3/7P/3bN1P1/2Prn1P1/1q6 w - - 0 1
>
>The solution is also very funny, but be warned! it's verrrry deep :)
>Mine solves this instantly ;)
>
>Groetjes,
>Paul

This one at least Green Light manages to find :-)
This probably confirms that you were telling the truth about it being a mate in
30, as that is what GLC finds :)

 Current eval: -12.80
 Ply  Time  Score   Nodes  Principal Variation
  4   0.10   3.91    8787  Neg4+ Kf5 Nh6+ Ke5 Nf7+ Kf5 Nd6+ Ke5 Ng4+ Kd5 c4+
                             Bxc4 Ne3+ Ke5 Nexc4+ Kd5 Ne3+ Ke5 Ndc4+ Ke4 Nxd2+
                             Ke5 Nxb1
  4   0.13   3.91   11123  Neg4+ Kf5 Nh6+ Ke5 Nf7+ Kf5 Nd6+ Ke5 Ng4+ Kd5 c4+
                             Bxc4 Ne3+ Ke5 Nexc4+ Kd5 Ne3+ Ke5 Ndc4+ Ke4 Nxd2+
                             Ke5 Nxb1
  5   0.25   3.93   27485  Neg4+ Kf5 Nh6+ Ke5 Nf7+ Kf5 Nd6+ Ke5 Ng4+ Kd5 c4+
                             Bxc4 Ne3+ Ke5 Ndxc4+ Ke4 Nxd2+ Ke5 Ng4+ Kf5 Nh6+
                             Ke5 Nf7+ Kf5
  5   0.30   3.93   35347  Neg4+ Kf5 Nh6+ Ke5 Nf7+ Kf5 Nd6+ Ke5 Ng4+ Kd5 c4+
                             Bxc4 Ne3+ Ke5 Ndxc4+ Ke4 Nxd2+ Ke5 Ng4+ Kf5 Nh6+
                             Ke5 Nf7+ Kf5
  6   0.59   3.94   86978  Neg4+ Kf5 Nh6+ Ke5 Nf7+ Kf5 Nd6+ Ke5 Ng4+ Kd5 Ne3+
                             Ke5 Nf7+ Ke4 Ng5+ Ke5 Nf3+ Ke4 Nxd2+ Ke5 Nxb1 Bxc2
                             Bb8+ Ke4 Nxc2
  6   0.74   3.94  106624  Neg4+ Kf5 Nh6+ Ke5 Nf7+ Kf5 Nd6+ Ke5 Ng4+ Kd5 Ne3+
                             Ke5 Nf7+ Ke4 Ng5+ Ke5 Nf3+ Ke4 Nxd2+ Ke5 Nxb1 Bxc2
                             Bb8+ Ke4 Nxc2
  7   1.43   4.00  234402  Neg4+ Kf5 Nh6+ Ke5 Nf7+ Kf5 Nd6+ Ke5 Ng4+ Kd5 c4+
                             Bxc4 Ne3+ Ke5 Ndxc4+ Ke4 Nxd2+ Ke5 Nxb1 Ne6 Bb8+
                             Kd4 Bd6
  7   1.74   4.00  287094  Neg4+ Kf5 Nh6+ Ke5 Nf7+ Kf5 Nd6+ Ke5 Ng4+ Kd5 c4+
                             Bxc4 Ne3+ Ke5 Ndxc4+ Ke4 Nxd2+ Ke5 Nxb1 Ne6 Bb8+
                             Kd4 Bd6
  8   2.41     ++  410813  Neg4+   (a=3.50 b=4.50 e=4.50)
  8   3.42 320.41  603512  Neg4+ Kf5 Nh6+ Ke5 Nf7+ Kf5 Nd6+ Ke5 Ng4+ Kd5 Ne3+
                             Ke5 Nf7+ Ke4 Ng5+ Ke5 Nf3+ Ke4 Nxd2+ Ke5 Nf3+ Ke4
                             Ng5+ Ke5 Nf7+ Ke4 Nd6+ Ke5 Ng4+ Kd5 Nf6+ Ke5 Nf7+
                             Kf5 Nh6+ Ke5 Nhg4+ Kf5 Ne3+ Ke5 Nfg4+ Ke4 Nf2+ Ke5
                             Nxd3+ Ke4 Nf2+ Ke5 Nfg4+ Ke4 Nf6+ Ke5 Nc4+ Kf5
                             Nd6+ Ke5 Ng4+ Kd5 c4#
  8   4.04 320.41  719438  Neg4+ Kf5 Nh6+ Ke5 Nf7+ Kf5 Nd6+ Ke5 Ng4+ Kd5 Ne3+
                             Ke5 Nf7+ Ke4 Ng5+ Ke5 Nf3+ Ke4 Nxd2+ Ke5 Nf3+ Ke4
                             Ng5+ Ke5 Nf7+ Ke4 Nd6+ Ke5 Ng4+ Kd5 Nf6+ Ke5 Nf7+
                             Kf5 Nh6+ Ke5 Nhg4+ Kf5 Ne3+ Ke5 Nfg4+ Ke4 Nf2+ Ke5
                             Nxd3+ Ke4 Nf2+ Ke5 Nfg4+ Ke4 Nf6+ Ke5 Nc4+ Kf5
                             Nd6+ Ke5 Ng4+ Kd5 c4#
  9   4.07   0/27          Neg4+  >exit
 local:  t=7.84  nps=180087.2  n=1412064  (f=384569  q=1027495)
 total:  t=7.84  nps=180087.2  n=1412064  draws=2959
 trans:  probes=381610  hits=124088 (32.52)  draft=36422 (9.54)
 trans:  exact=84 (0.02)  upper=17604 (4.61)  lower=16585 (4.35)
 tstor:  exact=338 (0.20)  upper=108496 (63.45)  lower=62164 (36.35)
 ext:  check=129664  recap=2393  ppush=5  1rep=9057  thrt=0
 q-moves:  gen=381499  tested=195980  made/un=1758  max-dep=4
 max eval diff:  part-1=0.63  part-2=0.76

Cheers, Tim.



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