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Subject: Re: Is this queen sacrifice sound?

Author: mike schoonover

Date: 04:29:14 01/06/06

Go up one level in this thread


hi dan,
here's some analysis frim ruffian on my 2.53 ghz celeron.
allthough maybe not correct against a computer,
against a human it looks very strong.
regards
mike

[setboard 4q1kr/p6p/1prQPppB/4n3/4P3/2P5/PP2B2P/R5K1 w - - 0 1]
[analyze]

4q1kr/p6p/1prQPppB/4n3/4P3/2P5/PP2B2P/R5K1 w - -
  Depth   Time  Score    Best line
   1/2    0.01  -9.56    a3 Rxd6
   1/2    0.01  -9.55    a4 Rxd6
   1/2    0.01  -9.54    b3 Rxd6
   1/3    0.01  -9.51    Bc4 Rxd6
   1/4    0.01  -1.50    Bb5 Rxd6 Bxe8 Rxe6
   1/6    0.01  -0.65    Qa3 Rxe6 Qxa7
   2/6    0.01  -0.65    Qa3 Rxe6 Qxa7
   3/8    0.01  -0.65    Qa3 Rxe6 Qxa7
   4/9    0.03  -0.87    Qa3 Rxe6 Qxa7 Qc6
   5/12   0.04  -1.61    Qa3 Rxe6 Qxa7 Nf7 Bf4 Rxe4
   5/12   0.06  -1.15    Qd5 Rxe6 Bb5 Qc8 Rd1
   6/14   0.09  -1.08    Qd5 Rxe6 Rf1 Qc6 Qxc6 Nxc6 Bc4
   7/14   0.14  -1.04    Qd5 Rxe6 Rd1 Qc8 Kh1 Qc6 b3
   8/17   0.28  -0.96    Qd5 Rxe6 Bb5 Qc8 Rd1 Nf3+ Kg2 Nh4+ Kh3 Nf3
   9/18   0.64  -0.88    Qd5 Rxe6 Rf1 Kf7 Bd1 Qb8 Bb3 Rhe8 Kh1
  10/21   1.22     ++    Qd5
  10/21   1.45  -0.50    Qd5 Rxe6 Bd1 Kf7 Bb3 Qe7 Rd1 Rc8 Qxe6+ Qxe6 Bxe6+
                         Kxe6
  10-->   2.01  -0.50    Qd5 Rxe6 Bd1 Kf7 Bb3 Qe7 Rd1 Rc8 Qxe6+ Qxe6 Bxe6+
                         Kxe6
  11/23   2.78  -0.44    Qd5 Rxe6 Bd1 Qc6 Bb3 Qxd5 Bxd5 Kf7 Bxe6+ Kxe6 Rd1
                         Re8 Kg2 f5
  11-->   3.50  -0.44    Qd5 Rxe6 Bd1 Qc6 Bb3 Qxd5 Bxd5 Kf7 Bxe6+ Kxe6 Rd1
                         Re8 Kg2 f5
  12/24   4.95  -0.43    Qd5 Rxe6 Bd1 Qc6 Qxc6 Rxc6 Bb3+ Nc4 Rd1 Kf7 Rd7+
                         Ke8 Rxa7 Rc8 Ba4+ Kd8
  12-->   7.25  -0.43    Qd5 Rxe6 Bd1 Qc6 Qxc6 Rxc6 Bb3+ Nc4 Rd1 Kf7 Rd7+
                         Ke8 Rxa7 Rc8 Ba4+ Kd8
  13/27  11.53  -0.33    Qd5 Rxe6 Bd1 Kf7 Bb3 Qc8 Rf1 Ng4 Rd1 Rhe8 Qd7+ Qxd7
                         Rxd7+ R8e7 Bxe6+ Kxe6 Rxe7+ Kxe7 Bf4
  13-->  16.79  -0.33    Qd5 Rxe6 Bd1 Kf7 Bb3 Qc8 Rf1 Ng4 Rd1 Rhe8 Qd7+ Qxd7
                         Rxd7+ R8e7 Bxe6+ Kxe6 Rxe7+ Kxe7 Bf4
  14/28  27.50  -0.31    Qd5 Rxe6 Bd1 Kf7 Bb3 Qd7 Rd1 Qxd5 Bxd5 Ke7 Bxe6 Kxe6
                         Kg2 Re8 Kg3 f5
{d6e5}


Time: 37.42, cpu 99.09%, nodes 39543463, nps 1056746
Hash: 64M, used 85%, hits 29%
EGTB: probs 0, hits 0

[d6e5]

4q1kr/p6p/1pr1PppB/4Q3/4P3/2P5/PP2B2P/R5K1 b - -
  Depth   Time  Score    Best line
   1/1    0.00   4.63    ... fxe5
   2/5    0.00   4.63    ... fxe5 Bg4
   3/7    0.00   6.01    ... fxe5 e7 Qxe7 Rf1
   4/7    0.00   5.86    ... fxe5 Rf1 Rxe6 Bc4
   5/10   0.00   5.75    ... fxe5 Rf1 Rxe6 Bc4 a6 Bxe6+ Qxe6 Rf8#
   6/13   0.03   4.73    ... fxe5 Rf1 Qe7 Bg4 Qc5+ Rf2 Qe7
   7/15   0.06   4.73    ... fxe5 Rf1 Rc7 Rf6 Re7 Bc4 Qc6
   8/20   0.19   4.49    ... fxe5 Rd1 Qe7 Rd7 Qh4 Rg7+ Kf8 Rxh7+ Qxh6 Rxh6
                         Rxh6
   9/20   0.28   4.53    ... fxe5 Rd1 Qe7 Rd7 Qh4 Rg7+ Kf8 Rxh7+ Qxh6 Rxh6
                         Rxh6 Bg4
  10/22   0.53   4.19    ... fxe5 Rd1 Rxe6 Bc4 b5 Bxe6+ Qxe6 Rd8+ Kf7 Rxh8
                         Qg4+ Kh1 Qxe4+ Kg1 Qb1+ Kf2 Qxb2+
  11/25   1.03   2.63    ... fxe5 Rd1 Rxe6 Bc4 b5 Bb3 a5 Rd8 Kf7 Rxe8 Rhxe8
  11-->   1.12   2.63    ... fxe5 Rd1 Rxe6 Bc4 b5 Bb3 a5 Rd8 Kf7 Rxe8 Rhxe8
  12/25   1.50     ++    ... fxe5
  12/25   2.30   3.08    ... fxe5 Rd1 Rxe6 Bc4 Kf7 Rd6 Qa4 Bxe6+ Ke7 Bb3 Qxe4
                         Re6+ Kd8 Bg7
  12-->   2.45   3.08    ... fxe5 Rd1 Rxe6 Bc4 Kf7 Rd6 Qa4 Bxe6+ Ke7 Bb3 Qxe4
                         Re6+ Kd8 Bg7
  13/27   4.47   2.77    ... fxe5 Rd1 Qe7 Rd7 Qh4 Bh5 Qf6 Rf7 Qxf7 exf7+ Kxf7
                         Be2 Rd8 Bg5 Rd7
  13-->   4.87   2.77    ... fxe5 Rd1 Qe7 Rd7 Qh4 Bh5 Qf6 Rf7 Qxf7 exf7+ Kxf7
                         Be2 Rd8 Bg5 Rd7
  14/30  10.28   2.83    ... fxe5 Rd1 Qxe6 Rd8+ Kf7 Rxh8 Qxa2 Rxh7+ Kg8 Rg7+
                         Kh8 Rb7 Qxb2 Bf1 Qb1 Rxa7 Qxe4
  14-->  10.76   2.83    ... fxe5 Rd1 Qxe6 Rd8+ Kf7 Rxh8 Qxa2 Rxh7+ Kg8 Rg7+
                         Kh8 Rb7 Qxb2 Bf1 Qb1 Rxa7 Qxe4
  15/32  20.17   3.14    ... fxe5 Rd1 Qxe6 Rd8+ Kf7 Rxh8 Qxa2 Rxh7+ Kg8 Rg7+
                         Kh8 Rd7 Qxb2 Bd2 Qb1+ Kg2 Rf6 Rd8+ Kg7 Rd7+ Kf8
  15-->  21.56   3.14    ... fxe5 Rd1 Qxe6 Rd8+ Kf7 Rxh8 Qxa2 Rxh7+ Kg8 Rg7+
                         Kh8 Rd7 Qxb2 Bd2 Qb1+ Kg2 Rf6 Rd8+ Kg7 Rd7+ Kf8
  16/37  56.58   3.34    ... fxe5 Rd1 Qxe6 Rd8+ Kf7 Rxh8 Qxa2 Bf1 g5 Bxg5
                         Kg6 h4 Qxb2 Rg8+ Kf7 Ra8 Rc7 c4
  16-->  59.08   3.34    ... fxe5 Rd1 Qxe6 Rd8+ Kf7 Rxh8 Qxa2 Bf1 g5 Bxg5
                         Kg6 h4 Qxb2 Rg8+ Kf7 Ra8 Rc7 c4
{f6e5}


Time: 1:05, cpu 99.62%, nodes 75127347, nps 1153144
Hash: 64M, used 98%, hits 32%
EGTB: probs 0, hits 0

[f6e5]

4q1kr/p6p/1pr1P1pB/4p3/4P3/2P5/PP2B2P/R5K1 w - -
  Depth   Time  Score    Best line
   1/2    0.00  -6.20    Rd1 Qxe6 Rd8+ Kf7 Rxh8 Qxa2 Bf1 g5 Bxg5 Kg6 h4 Qxb2
                         Rg8+ Kf7 Ra8 Rc7 c4
   1/4    0.00  -6.10    Bb5 Qxe6 Bxc6 Qxc6
   1/4    0.00  -6.07    Rf1 Qxe6 Rf8#
   1/4    0.00  -4.63    Bg4 Rxe6 Rf1 Rd6
   2/4    0.00  -6.13    Bg4 Rxe6 Rf1 Rd6
   2/4    0.00  -6.07    Rf1 Qxe6 Rf8#
   2/4    0.00  -3.34    Rd1 Qxe6 Rd8+ Kf7 Rxh8 Qxa2 Bf1 g5 Bxg5 Kg6 h4 Qxb2
                         Rg8+ Kf7 Ra8 Rc7 c4
   3/5    0.02  -3.34    Rd1 Qxe6 Rd8+ Kf7 Rxh8 Qxa2 Bf1 g5 Bxg5 Kg6 h4 Qxb2
                         Rg8+ Kf7 Ra8 Rc7 c4
   4/5    0.02  -3.34    Rd1 Qxe6 Rd8+ Kf7 Rxh8 Qxa2 Bf1 g5 Bxg5 Kg6 h4 Qxb2
                         Rg8+ Kf7 Ra8 Rc7 c4
   5/5    0.02  -3.34    Rd1 Qxe6 Rd8+ Kf7 Rxh8 Qxa2 Bf1 g5 Bxg5 Kg6 h4 Qxb2
                         Rg8+ Kf7 Ra8 Rc7 c4
   6/6    0.02  -3.34    Rd1 Qxe6 Rd8+ Kf7 Rxh8 Qxa2 Bf1 g5 Bxg5 Kg6 h4 Qxb2
                         Rg8+ Kf7 Ra8 Rc7 c4
   7/6    0.02  -3.34    Rd1 Qxe6 Rd8+ Kf7 Rxh8 Qxa2 Bf1 g5 Bxg5 Kg6 h4 Qxb2
                         Rg8+ Kf7 Ra8 Rc7 c4
   8/13   0.02  -3.34    Rd1 Qxe6 Rd8+ Kf7 Rxh8 Qxa2 Bf1 g5 Bxg5 Kg6 h4 Qxb2
                         Rg8+ Kf7 Ra8 Rc7 c4
   9/16   0.04  -3.34    Rd1 Qxe6 Rd8+ Kf7 Rxh8 Qxa2 Bf1 g5 Bxg5 Kg6 h4 Qxb2
                         Rg8+ Kf7 Ra8 Rc7 c4
  10/17   0.05  -3.34    Rd1 Qxe6 Rd8+ Kf7 Rxh8 Qxa2 Bf1 g5 Bxg5 Kg6 h4 Qxb2
                         Rg8+ Kf7 Ra8 Rc7 c4
  11/17   0.05  -3.34    Rd1 Qxe6 Rd8+ Kf7 Rxh8 Qxa2 Bf1 g5 Bxg5 Kg6 h4 Qxb2
                         Rg8+ Kf7 Ra8 Rc7 c4
  12/23   0.11  -3.34    Rd1 Qxe6 Rd8+ Kf7 Rxh8 Qxa2 Bf1 g5 Bxg5 Kg6 h4 Qxb2
                         Rg8+ Kf7 Ra8 Rc7 c4
  13/23   0.19  -3.34    Rd1 Qxe6 Rd8+ Kf7 Rxh8 Qxa2 Bf1 g5 Bxg5 Kg6 h4 Qxb2
                         Rg8+ Kf7 Ra8 Rc7 c4
  14/26   0.36  -3.34    Rd1 Qxe6 Rd8+ Kf7 Rxh8 Qxa2 Bf1 g5 Bxg5 Kg6 h4 Qxb2
                         Rg8+ Kf7 Ra8 Rc7 c4
  15/27   0.83  -3.34    Rd1 Qxe6 Rd8+ Kf7 Rxh8 Qxa2 Bf1 g5 Bxg5 Kg6 h4 Qxb2
                         Rg8+ Kf7 Ra8 Rc7 c4
  15-->   1.90  -3.34    Rd1 Qxe6 Rd8+ Kf7 Rxh8 Qxa2 Bf1 g5 Bxg5 Kg6 h4 Qxb2
                         Rg8+ Kf7 Ra8 Rc7 c4
{a1f1}


Time: 5.80, cpu 98.10%, nodes 6721925, nps 1158952
Hash: 64M, used 30%, hits 33%
EGTB: probs 0, hits 0

[a1f1]

4q1kr/p6p/1pr1P1pB/4p3/4P3/2P5/PP2B2P/5RK1 b - -
  Depth   Time  Score    Best line
   1/1    0.00   4.23    ... Rc7 Bb5 Qd8 Bd7 Qe7 Ba4
   1/1    0.00   6.07    ... Qxe6 Rf8#
   2/3    0.00   -#01    ... Qxe6 Rf8#
   2/5    0.00   5.86    ... Rxe6 Bc4 b5 Bxe6+
   3/8    0.00   5.75    ... Rxe6 Bc4 a6 Bxe6+ Qxe6 Rf8#
   4/8    0.00   2.48    ... Rxe6 Bc4 Qf7 Rxf7 Kxf7
   4/9    0.00   4.63    ... Qe7 Bg4 Rd6 Rf7
   5/11   0.02   4.12    ... Qe7 Rf7 Qc5+ Kh1 Rc7 Bf8
   5/13   0.03   4.57    ... Rc7 Rf6 Re7 Bc4 a6
   6/15   0.06   4.34    ... Rc7 Bb5 Qd8 Bd7 Qe7 Rf7 Rxd7
   7/16   0.13   4.74    ... Rc7 Bb5 Qd8 Bd7 Qe7 Rd1 b5
   8/17   0.19   4.48    ... Rc7 Bb5 Qd8 Kg2 Re7 Bg5 Qd6 Bxe7 Qxe7
   9/19   0.55   4.43    ... Rc7 Bb5 Qd8 Ba4 Re7 Bg5 b5 Bxe7 Qxe7 Bxb5 Qxe6
  10/21   0.75   3.50    ... Rc7 Bb5 Qd8 Bd7 Qe7 Ba4 Qc5+ Kh1 b5 Bxb5 Re7
  11/23   1.33     ++    ... Rc7
  11/23   1.63   4.15    ... Rc7 Bb5 Qd8 Bd7 Qe7 Ba4 b5 Bxb5 a5 Rf8+ Qxf8
                         Bxf8 Kxf8
  11-->   1.69   4.15    ... Rc7 Bb5 Qd8 Bd7 Qe7 Ba4 b5 Bxb5 a5 Rf8+ Qxf8
                         Bxf8 Kxf8
  12/23   1.88     --    ... Rc7
  12/27   2.31   3.94    ... Rc7 Bb5 Qd8 Ba4 Re7 Bb3 a5 Bg5 b5 Bxe7 Qxe7 Rf7
                         Qh4
  12-->   2.61   3.94    ... Rc7 Bb5 Qd8 Ba4 Re7 Bb3 a5 Bg5 b5 Bxe7 Qxe7 Rf7
                         Qh4
  13/28   2.75     --    ... Rc7
  13/28   4.10   3.59    ... Rc7 Bb5 Qd8 Bd7 Qe7 Ba4 b5 Bxb5 a5 Rf7 Qd6 Rxc7
                         Qb6+ Kg2 Qxc7
  13-->   4.55   3.59    ... Rc7 Bb5 Qd8 Bd7 Qe7 Ba4 b5 Bxb5 a5 Rf7 Qd6 Rxc7
                         Qb6+ Kg2 Qxc7
  14/33   9.85   3.45    ... Rc7 Bd1 Re7 Bb3 a5 Rf7 a4 Bxa4 Qc8 Bd7 Qc5+ Rf2
                         b5 Bxb5 Rxe6
  14-->  12.60   3.45    ... Rc7 Bd1 Re7 Bb3 a5 Rf7 a4 Bxa4 Qc8 Bd7 Qc5+ Rf2
                         b5 Bxb5 Rxe6
  15/35  19.28     --    ... Rc7
  15/35  24.14   2.42    ... Rc7 Bb5 Qd8 Bd7 Qe7 Ba4 Rc8 Rf7 Qxf7 exf7+ Kxf7
                         Bb3+ Kf6 h4 Ke7 Bg7 Kd6 Bxh8 Rxh8
  15-->   1:07   2.42    ... Rc7 Bb5 Qd8 Bd7 Qe7 Ba4 Rc8 Rf7 Qxf7 exf7+ Kxf7
                         Bb3+ Kf6 h4 Ke7 Bg7 Kd6 Bxh8 Rxh8
  16/36   1:33   2.18    ... Rc7 Bb5 Qe7 Ba4 b5 Bb3 Rc4 Bxc4 bxc4 Kg2 a5 Rf7
                         Qxf7 exf7+ Kxf7 b3 cxb3 axb3 Rd8
  16-->   1:59   2.18    ... Rc7 Bb5 Qe7 Ba4 b5 Bb3 Rc4 Bxc4 bxc4 Kg2 a5 Rf7
                         Qxf7 exf7+ Kxf7 b3 cxb3 axb3 Rd8
{exit}


Time: 2:09, cpu 99.26%, nodes 149248860, nps 1155713
Hash: 64M, used 99%, hits 32%
EGTB: probs 0, hits 0



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Last modified: Thu, 15 Apr 21 08:11:13 -0700

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