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Subject: Re: Tactical/Combinatorial Suite, Selected from WCSAC (cleaned up)

Author: Koundinya Veluri

Date: 08:21:22 10/19/01

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>This one is also hard for Deep Fritz
>
>Here is the anlaysis after Bb5 axb5(it needs depth 13 to see positive score when
>Gambittiger needs only depth 9 for positive score
>
>New position
>[D]k1q2brr/1p3pp1/p7/1P3n1n/1P2N2p/1NP5/1BB1Q1PP/2R2R1K b - - 0 1
>

Starting here it's a little easier for King of Kings. It sees black as positive
at around 1:16 and gets Nhg3+ at around 1:48 so it should be able to solve the
original position at 11 ply within 30 minutes but for some reason it just
explodes. Anyway, from the new position:

  0    -547       10               3      b6 bxa6
  5    -490       78          100000      Qe6 Qf3 g6 bxa6 Qxa6 c4 Bxb4 Bxh8 Rxh8
  6    -490      112          150459      Qe6 Qf3 g6 bxa6 Qxa6 c4 Bxb4 Bxh8 Rxh8
  6    -457      266          361798      Qe6 Kg1 Be7 bxa6 bxa6 Qf3 g6
  7    -457      333          469191      Qe6 Kg1 Be7 bxa6 bxa6 Qf3 g6
  7    -476      660          911475      Qe6 Kg1 Qb6+ Qf2 Qxf2+ Rxf2 g6 bxa6
                                          bxa6 c4
  8    -476      880         1239217      Qe6 Kg1 Qb6+ Qf2 Qxf2+ Rxf2 g6 bxa6
                                          bxa6 c4
  8    -490     1615         2256619      Qe6 Kg1 Qb6+ Nec5 Bxc5+ bxc5 Qe6 Qxe6
                                          fxe6 bxa6 Ne3 axb7+ Kxb7
  9    -490     2518         3607351      Qe6 Kg1 Qb6+ Nec5 Bxc5+ bxc5 Qe6 Qxe6
                                          fxe6 bxa6 Ne3 axb7+ Kxb7
  9    -493     4473         6305568      Qe6 Kg1 Qb6+ Nbc5 Bxc5+ bxc5 Qe6 bxa6
                                          Rd8 axb7+ Kxb7 Bb3 Qxb3 Rxf5
  9    -492     5509         7812187 [+-] Nfg3+ Nxg3 Nxg3+ hxg3 hxg3+ Kg1 Rh1+
                                          Kxh1 Rh8+ Kg1 Bc5+ Rf2 gxf2+ Qxf2
                                          Bxf2+ Kxf2
  9    -450     6155         8771476 [++] Nfg3+ Nxg3 Nxg3+ hxg3 hxg3+ Kg1 Rh1+
                                          Kxh1 Rh8+ Kg1 Bc5+ Rf2 gxf2+ Qxf2
                                          Bxf2+ Kxf2
  9    -370     7507        10743900 [++] Nfg3+ Nxg3 Nxg3+ hxg3 hxg3+ Kg1 Rh1+
                                          Kxh1 Rh8+ Kg1 Bc5+ Rf2 gxf2+ Qxf2
                                          Bxf2+ Kxf2 axb5 Be4 Qd8
  9    -210     7602        10886136 [++] Nfg3+ Nxg3 Nxg3+ hxg3 hxg3+ Kg1 Rh1+
                                          Kxh1 Rh8+ Kg1 Bc5+ Rf2 gxf2+ Qxf2
                                          Bxf2+ Kxf2 axb5 Be4 Qd8
  9     110     7680        11015629 [++] Nfg3+ Nxg3 Nxg3+ hxg3 hxg3+ Kg1 Rh1+
                                          Kxh1 Rh8+ Kg1 Bc5+ Rf2 Rh1+ Kxh1 Qh8+
                                          Qh5 Qxh5+ Kg1 gxf2+ Kf1 Qh1+ Ke2
                                          f1=Q+ Rxf1 Qxg2+ Rf2 Bxf2
  9     479     8420        12169624      Nfg3+ hxg3 Nxg3+ Kh2 Nxe2 Rcd1 Qc7+
                                          Kh1 Bxb4 bxa6 bxa6 Nd4 Nxd4 Rxd4
 10     479     9261        13447412      Nfg3+ hxg3 Nxg3+ Kh2 Nxe2 Rcd1 Qc7+
                                          Kh1 Bxb4 bxa6 bxa6 Nd4 Nxd4 Rxd4
 10     482    10363        15096032      Nfg3+ hxg3 Nxg3+ Kh2 Nxe2 bxa6 Qc7+
                                          Kh1 h3 axb7+ Kb8 g3 Nxc1 Rxc1 Kxb7
 10     483    10753        15721629 [+-] Nhg3+ hxg3 hxg3+ Kg1 Bc5+ Nf2 Bxf2+
                                          Rxf2 Rh1+ Kxh1 Rh8+ Qh5 Rxh5+ Kg1 Qh8
                                          Nd4 Nxd4 bxa6 gxf2+ Kxf2 Nxc2 axb7+
                                          Kxb7
 10     519    11103        16314642 [++] Nhg3+ hxg3 hxg3+ Kg1 Bc5+ Nf2 Bxf2+
                                          Rxf2 Rh1+ Kxh1 Rh8+ Qh5 Rxh5+ Kg1 Qh8
                                          Nd4 Nxd4 bxa6 gxf2+ Kxf2 Nxc2 axb7+
                                          Kxb7
 10     543    13397        19739065      Nhg3+ hxg3 hxg3+ Kg1 Bc5+ Rf2 gxf2+
                                          Qxf2 Bxf2+ Nxf2 axb5 Bd3 Nd6 Nd4 Nc4
                                          Ra1+ Kb8
 11     543    13487        19871323      Nhg3+ hxg3 hxg3+ Kg1 Bc5+ Rf2 gxf2+
                                          Qxf2 Bxf2+ Nxf2 axb5 Bd3 Nd6 Nd4 Nc4
                                          Ra1+ Kb8

Koundinya



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