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Subject: Re: ...Mate in 13.....?

Author: Tim Foden

Date: 07:33:23 07/04/02

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On July 04, 2002 at 10:04:04, Art Basham wrote:

>Then try this one...:-)
>
>my Shredder ann. a mate in 13...!
>
>[D]r3rbk1/p1p2p2/5P2/1p5Q/8/q2p4/6NP/5R1K w - -
>
>1. Ne3 mates..!

GLC 2.18, 24MB Hash, AXP 1.46Ghz, says this is a mate in 8.

Cheers, Tim.

Analysis below:

>anal
 Game stage: Middle game
 Current eval: -9.796
 Ply  Time   Score   Nodes  Principal Variation
  1   0.21  -9.711       5  Qg4+ Kh7
  1   0.23  -9.396      18  Qg5+ Bg7 2. Qxg7# {++}
  1   0.25  -8.398      26  Qg5+ Kh8 2. Qxb5
  1   0.27  -8.398      99  Qg5+ Kh8 2. Qxb5
  2   0.28  -8.398     185  Qg5+ Kh8 2. Qxb5
  2   0.35  -8.398     402  Qg5+ Kh8 2. Qxb5
  3   0.41  -7.998     739  Qg5+ Kh8 2. Qh4+ Bh6 3. Qxh6+ Kg8 {++}
  3   0.42  -6.778    1390  Qg5+ Kh7 2. Qh5+ Bh6 3. Qxf7+ Kh8 4. Qxc7
  3   0.45  -6.778    1736  Qg5+ Kh7 2. Qh5+ Bh6 3. Qxf7+ Kh8 4. Qxc7
  4   0.51  -6.778    2634  Qg5+ Kh7 2. Qh5+ Bh6 3. Qxf7+ Kh8 4. Qxc7
  4   0.52  -6.778    3190  Qg5+ Kh7 2. Qh5+ Bh6 3. Qxf7+ Kh8 4. Qxc7
  5   0.74  -6.378    4928  Qg5+ Kh7 2. Qf5+ Kh6 3. Qh3+ Kg6 4. Nh4+ Kg5 5.
                              Rf5+ Kh6 6. Ng2+ Kg6 {ht} {++}
  5   0.75  +0.000    6496  Qg5+ Kh7 2. Qf5+ Kh6 3. Qh3+ Kg6 4. Nh4+ Kh6 5.
                              Nf3+ Kg6 6. Nh4+
  5   0.81  +0.000   12580  Qg5+ Kh7 2. Qf5+ Kh6 3. Qh3+ Kg6 4. Nh4+ Kh6 5.
                              Nf3+ Kg6 6. Nh4+
  6   0.82  +0.000   21508  Qg5+ Kh7 2. Qf5+ Kh6 3. Qh3+ Kg6 4. Nh4+ Kh6 5.
                              Nf3+ Kg6 6. Nh4+
  6   1.46  +0.000   49678  Qg5+ Kh7 2. Qf5+ Kh6 3. Qh3+ Kg6 4. Nh4+ Kh6 5.
                              Nf3+ Kg6 6. Nh4+
  7   1.51  +0.000   87783  Qg5+ Kh7 2. Qf5+ Kh6 3. Qh3+ Kg6 4. Nh4+ Kh6 5.
                              Nf3+ Kg6 6. Nh4+
  7   3.63  +0.000  261792  Qg5+ Kh7 2. Qf5+ Kh6 3. Qh3+ Kg6 4. Nh4+ Kh6 5.
                              Nf3+ Kg6 6. Nh4+
  8   3.79  +0.000  430790  Qg5+ Kh7 2. Qf5+ Kh6 3. Qh3+ Kg6 4. Nh4+ Kh6 5.
                              Nf3+ Kg6 6. Nh4+
  8   5.89  +0.400 1022548  Ne3 Rxe3 2. Rg1+ Bg7 3. Rxg7+ Kf8 {ht} {++}
  8   6.62  +6.176 1660359  Ne3 Qc1 2. Rxc1 Bg7 3. fxg7 Kxg7 4. Rxc7 Rf8 5.
                              Qxb5
  8   7.02  +6.176 1999660  Ne3 Qc1 2. Rxc1 Bg7 3. fxg7 Kxg7 4. Rxc7 Rf8 5.
                              Qxb5
  9   7.27  +6.576 2140322  Ne3 Qc1 2. Rxc1 Bg7 3. Qg5 Re7 4. fxe7 Re8 5. Rxc7
                              d2 {++}
  9   7.78 +Mate12 2747389  Ne3 Bg7 2. fxg7 f6 3. Ng4 Qa1 4. Nxf6+ {ht}
  9   8.50 +Mate12 3677931  Ne3 Bg7 2. fxg7 f6 3. Ng4 Qa1 4. Nxf6+ {ht}
 10   9.38 +Mate09 4841564  Ne3 Bg7 2. fxg7 f6 3. Qd5+ Kh7 4. Rg1 Qc5 5. g8=Q+
                              Rxg8 6. Qe4+ Kh6 7. Qh4+ Qh5 8. Nf5+ Kh7 9. Qxh5#
 10  12.31 +Mate09 9339200  Ne3 Bg7 2. fxg7 f6 3. Qd5+ Kh7 4. Rg1 Qc5 5. g8=Q+
                              Rxg8 6. Qe4+ Kh6 7. Qh4+ Qh5 8. Nf5+ Kh7 9. Qxh5#
 11  13.23 +Mate08  10664k  Ne3 Bg7 2. fxg7 f6 3. Qd5+ Re6 4. Qxe6+ Kh7 5. Rg1
                              Qc5 6. g8=Q+ Rxg8 7. Qxg8+ Kh6 8. Qg6#
 11  14.47 +Mate08  12657k  Ne3 Bg7 2. fxg7 f6 3. Qd5+ Re6 4. Qxe6+ Kh7 5. Rg1
                              Qc5 6. g8=Q+ Rxg8 7. Qxg8+ Kh6 8. Qg6#
 12  16.14 +Mate08  15168k  Ne3 Bg7 2. fxg7 f6 3. Qd5+ Re6 4. Qxe6+ Kh7 5. Rg1
                              Qc5 6. g8=Q+ Rxg8 7. Qxg8+ Kh6 8. Qg6# {ht}
 12  18.69 +Mate08  19386k  Ne3 Bg7 2. fxg7 f6 3. Qd5+ Re6 4. Qxe6+ Kh7 5. Rg1
                              Qc5 6. g8=Q+ Rxg8 7. Qxg8+ Kh6 8. Qg6# {ht}
 13  23.21 +Mate08  26147k  Ne3 Bg7 2. fxg7 f6 3. Qd5+ Re6 4. Qxe6+ Kh7 5. Rg1
                              Qc5 6. g8=Q+ Rxg8 7. Qxg8+ Kh6 8. Qg6# {ht}
 13  27.47 +Mate08  33368k  Ne3 Bg7 2. fxg7 f6 3. Qd5+ Re6 4. Qxe6+ Kh7 5. Rg1
                              Qc5 6. g8=Q+ Rxg8 7. Qxg8+ Kh6 8. Qg6# {ht}
 14  35.15 +Mate08  44916k  Ne3 Bg7 2. fxg7 f6 3. Qd5+ Re6 4. Qxe6+ Kh7 5. Rg1
                              Qc5 6. g8=Q+ Rxg8 7. Qxg8+ Kh6 8. Qg6# {ht}
 14  43.87 +Mate08  59690k  Ne3 Bg7 2. fxg7 f6 3. Qd5+ Re6 4. Qxe6+ Kh7 5. Rg1
                              Qc5 6. g8=Q+ Rxg8 7. Qxg8+ Kh6 8. Qg6# {ht}
 15   1:01 +Mate08  85217k  Ne3 Bg7 2. fxg7 f6 3. Qd5+ Re6 4. Qxe6+ Kh7 5. Rg1
                              Qc5 6. g8=Q+ Rxg8 7. Qxg8+ Kh6 8. Qg6# {ht}
 15   1:18 +Mate08 114545k  Ne3 Bg7 2. fxg7 f6 3. Qd5+ Re6 4. Qxe6+ Kh7 5. Rg1
                              Qc5 6. g8=Q+ Rxg8 7. Qxg8+ Kh6 8. Qg6# {ht}
 16   1:52 +Mate08 164780k  Ne3 Bg7 2. fxg7 f6 3. Qd5+ Re6 4. Qxe6+ Kh7 5. Rg1
                              Qc5 6. g8=Q+ Rxg8 7. Qxg8+ Kh6 8. Qg6# {ht}
 16   2:24 +Mate08 221107k  Ne3 Bg7 2. fxg7 f6 3. Qd5+ Re6 4. Qxe6+ Kh7 5. Rg1
                              Qc5 6. g8=Q+ Rxg8 7. Qxg8+ Kh6 8. Qg6# {ht}
 17   2:34   0/34           Ne3    >exit
 local:  t=2:37  nps=1509697.0  n=237395331 (36.6% / 63.4%)  fh=93.9%
 total:  t=3:29:02  nps=841443.6  n=10553206752  draws=165883
 trans:  probes=49993274  hits=10972909 (21.95%)  draft=7739277 (15.48%)
 tcuts:  exact=3399 (0.01%)  upper=4382704 (8.77%)  lower=2669573 (5.34%)
 tstor:  exact=9222 (0.04%)  upper=13308788 (64.15%)  lower=7428636 (35.81%)
 ext:  check=32672925  recap=122066  ppush=661377  1rep=1586191  thrt=0
 q-moves:  gen=3948192  tested=2230819  made/un=899552  max-dep=9
 max eval diff:  part-1=3.627  part-2=1.639
>



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