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Subject: Re: Are you amateur? (two interesting positions)

Author: Dann Corbit

Date: 12:53:22 04/24/02

Go up one level in this thread


On April 24, 2002 at 07:46:07, Grzegorz Sidorowicz wrote:

>
>[D]r1b1qbk1/pp2n1rp/3p1B2/1N1Pp3/Q3Pp2/1P1N1Pp1/P3B1P1/2R2RK1 w - - 0 1
>
>bm=Nxf4
>;-)
>
>[D]5r1k/BQ2Npbp/3q2p1/8/8/1P4nb/P3PP2/1RR3K1 w - - 0 1
>
>bm=Rc2
>;-)
>
>Positions created after blitz games (by my program)

On the first, it seems that black may have some good counter play.  The ce was
less than half a pawn advantage.

On the second, Beowulf ended in a fail-low.  Might be a good response there
also.

Beowulf says:

Position 1 - White to play
--------------------------
ID =
FEN = r1b1qbk1/pp2n1rp/3p1B2/1N1Pp3/Q3Pp2/1P1N1Pp1/P3B1P1/2R2RK1 w - -

r . b . q b k .
p p . . n . r p
. . . p . B . .
. N . P p . . .
Q . . . P p . .
. P . N . P p .
P . . . B . P .
. . R . . R K .

Current Position = 4.29
Number of Possible Moves = 43

  5    492?     40      16222   Bxg7 Qh5 Bd1 Bxg7 Nxf4
  5    521      43      18399   Nxd6 Qxa4 bxa4 Nxd5 Bxg7 Bxd6 Bxe5
  6    492?     93      53137   Nxd6 Qh5 Nc5 Nxd5 Qd7
  6     47     250     152245   Nxd6 Qh5 Bh4 Qxh4 Rc3 Qf6
  6    355     282     173619   Bxe7 Bxe7 Nxa7 Qxa4 bxa4 Bh3
  7    330     521     347696   Bxe7 Bxe7 Qc4 Qh5 Qxc8+ Rxc8 Rxc8+ Kf7 Nxa7
  7    338     627     448723   Nxf4 exf4 Bxg7 Bxg7 Nxd6 Qxa4 bxa4
  8    309?   1015     805162   Nxf4 exf4 Bxg7 Qh5 Be5 dxe5 Rc7 Bg7 Nxa7 Kf8
  8     78    2618    2059890   Nxf4 exf4 Bd4 Qh5 Rfd1 Bg4 Nxd6 Bxf3 gxf3
  9    107!   4987    4055034   Nxf4 exf4 Rfe1 Qh5 Qd4 Qh2+ Kf1 Bd7 Nxd6 Qh1+
Qg1 Bc8 Bxg7
  9    130    5138    4207476   Nxf4 exf4 Rfe1 Qh5 Qd4 Qh2+ Kf1 Rf7 Nc7 Qh1+ Qg1
Qxg1+ Kxg1 Rb8
 10    101?   8415    7242493   Nxf4 exf4 Rfe1 Qh5 Qd4 Qh2+ Kf1 Rf7 Bg5 Bg7 Qc4
 10     39   15894   13749617   Nxf4 exf4 Rfe1 Qh5 Qd4 Qh2+ Kf1 Rf7 Bg5 Bg7 Qc4
Qh1#
 11     10?  30950   25806666   Bxg7 Qh5 Rfe1 Qh2+ Kf1 Nxd5 Nxf4 Kxg7 Nh5+ Kh8
Nxg3 Bh3 Rc6 bxc6 Nd4
 11     41   36411   30626569   Nxf4 exf4 Qd4 Qh5 Rfd1 Qh2+ Kf1 Rf7 Nc7 Rb8 Bxe7
Qh1+ Qg1 Bg7 Qxh1
 11     41   72000   59270659   Nxf4 exf4 Qd4 Qh5 Rfd1 Qh2+ Kf1 Rf7 Nc7 Rb8 Bxe7
Qh1+ Qg1 Bg7 Qxh1

Search Time : 720.0 Seconds
Total Nodes Searched   : 59270659  (87.1% Qui)
Total Nodes Evaluated  : 51636496
Cuts       : Delta 14742561  : SEE     17746732  : Mate          0
           : Razor  2911571  : Eval    23501286
Extensions : Check  1027131  : OneRep   170335  : CMThreat  19336
           : Pawn    156547  : Recap    197857  : RevCheck  22975
Hash Stores (Size) : 5089775  (4194301)
Hash Probes (Hits) : 38516915  (5787189)
EGTB Probes (Hits) : 0  (0)
Move Ordering      : 62.3%
Best Move = Nxf4
--Answer: Nxf4    ** Correct **
Time To Solution = 364.11 sec
Correct So Far : 1/1


Position 2 - White to play
--------------------------
ID =
FEN = 5r1k/BQ2Npbp/3q2p1/8/8/1P4nb/P3PP2/1RR3K1 w - -

. . . . . r . k
B Q . . N p b p
. . . q . . p .
. . . . . . . .
. . . . . . . .
. P . . . . n b
P . . . P P . .
. R R . . . K .

Current Position = 1.37
Number of Possible Moves = 47

  6    288      86      95876   fxg3 Qxg3+ Kh1 Be5 Bg1 Bg7 Rc2
  7    257?    112     126522   fxg3 Qxg3+ Kh1 Be5 e3 Bc8 Rc7 Bxc7 Nxc8
  7    257     267     322658   fxg3 Qxg3+ Kh1 Bg4 Rc2 Qh3+ Kg1 Bb2 Rcxb2 Qxb3
  8    228?    333     410031   fxg3 Qxg3+ Kh1 Be5 Ra1 Kg7 Nf5+ Bxf5 Bd4
  8    228     799    1056425   fxg3 Bf6 Nxg6+ hxg6 Bf2 Qd2 Rc7 Re8
  9    198?    874    1155478   fxg3 Qxg3+ Kh1 Be5 Bg1 Qh4 Bh2 Bxh2 Qd5 Qxe7
Kxh2
  9    214    3092    3988186   Rc2 Nf5 Bc5 Qf4 Nxf5 Bxf5 Bxf8 Bxc2 Bxg7+ Kxg7
 10    204    5813    7358289   Rc2 Bf6 Nd5 Bf5 Bc5 Qe5 Bxf8 Bxc2 Re1 Be4
 11    175?   9401   11825943   Rc2 Bf6 Nd5 Bf5 Bc5 Nxe2+ Rxe2 Qxc5 Rf1 Kg7 Qd7

Search Time : 720.0 Seconds
Total Nodes Searched   : 99382117  (77.2% Qui)
Total Nodes Evaluated  : 76630197
Cuts       : Delta 14607806  : SEE     3683196  : Mate          0
           : Razor  2963173  : Eval    51121564
Extensions : Check  8420634  : OneRep   571584  : CMThreat  28457
           : Pawn         4  : Recap    138561  : RevCheck 388293
Hash Stores (Size) : 10379779  (4194301)
Hash Probes (Hits) : 68082289  (7558761)
EGTB Probes (Hits) : 0  (0)
Move Ordering      : 89.0%
Best Move = Rc2
--Answer: Rc2    ** Correct **
Time To Solution = 30.92 sec
Correct So Far : 2/2


Test Completed.
Results;
Correct : 2/2
Average Time To Solution = 197.51 sec



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