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Subject: Re: Why a5?

Author: Chris Welty

Date: 19:15:44 06/30/05

Go up one level in this thread


On June 29, 2005 at 12:15:47, Jack Lad wrote:

>[d] 2k5/2p5/1p1q4/4p3/P1P2rp1/3PQ2p/5P1P/R5K1 w
>
>1.a5? bxa5 2.Rxa5 Rxc4! and black should win from here.  So can your engine find
>a good move for white instead or does it still insist on playing a5??

Mine doesn't like a5 but can't find anything better than -2.00:


1-00   -1.85    142n      0s   #Infn/s  Qg3 <cache>
2-00   -2.02    191n      0s   #Infn/s  Qg3 Qd4 <eval>
3-00   -2.10    515n      0s   #Infn/s  Qg3 Qc6 a5 <eval>
4-00   -2.01  2.81kn  32.0ms  87.9kn/s  Qg3 Qb4 Kh1 Qb2 <eval>
4-03   -1.51  7.42kn  63.0ms   118kn/s  a5 Qc6 Qg3 <cache>
5-00   -1.51  17.2kn   157ms   109kn/s  a5 Qc6 Qg3 bxa5 Rxa5 <eval>
6-00   -1.16  75.0kn   688ms   109kn/s  a5 bxa5 Rxa5 Rxc4 Ra8+ Kd7 Qg5 Kc6
<eval>
7-00   -1.24   209kn   1.77s   118kn/s  a5 bxa5 Rxa5 Rxc4 Ra8+ Kd7 Ra1 Qd4 Ra5
<eval>
8-00   -1.64   430kn   3.69s   117kn/s  a5 bxa5 Rxa5 Rxc4 Ra8+ Kd7 Kf1 Rc3 Rg8
Rxd3 <eval>
9-00   -1.69  1.18Mn   10.3s   114kn/s  a5 bxa5 Rxa5 Rxc4 Ra8+ Kd7 Qg5 Qf6 Qd2
Rd4 Qe2 <eval>
10-00   -2.04  5.67Mn   52.4s   108kn/s  a5 bxa5 Rxa5 Rxc4 Kf1 Rb4 Rxe5 Rb1+ Ke2
Rb2+ Kd1 Rxf2 Qxf2 Qxe5 <eval>
10-03   -2.00  12.2Mn    103s   118kn/s  Kf1 Qc6 Ke2 Qf6 Rf1 Qf5 Ke1 Kb8 Qg3 Qh5
<eval>
11-00   -2.00  34.6Mn    270s   128kn/s  Kf1 Kb8 a5 Rf3 Qe4 Qc5 Ra2 Qb4 Re2 Qb1+
Re1 Qb2 Re2 <eval>



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