Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Mate in 8 (corrected analysis)

Author: Roy Eassa

Date: 11:17:15 06/18/02

Go up one level in this thread


On June 18, 2002 at 14:09:10, Roy Eassa wrote:

>On June 17, 2002 at 20:16:01, John Merlino wrote:
>
>>Here's an amusing little Mate in 9 King chase that I had when testing
>>Chessmaster 9000:
>>
>>[D]r6r/ppp1bQpp/2k1B1q1/4P3/4p3/2P1B3/PP3P1P/2K2R2 w - - 0 20
>>
>
>
Some analysis (mate in 8) with help from Fritz:

1.Rd1 b6

   [1...b5 2.Bd5+ Kd7 3.Bb7+ Qd6 4.exd6 cxd6 5.Bf4 Rhc8 6.Rxd6+
      (or 6.Bxd6 Rxc3+ 7.bxc3 Re8 8.Be5#)
    6...Kc7 7.Qxe7+ Kb8 8.Rd8#]

2.Bd5+ Kb5

   [2...Kd7 follows the line above]

3.Qxe7 Qd6

   [3...a5 4.Bb7
      (or 4.Qxc7 Rac8 5.Bc4+ Ka4 6.Kb1! Qh6
         (6...Rxc7 7.b3+ Ka3 8.Bc1#)
       7.Rd5 Qxe3 8.Bb5#)
    4...Rhd8 5.a4+ Kc4 6.Kc2 Rd2+ 7.Rxd2 Qd6 8.b3#]

   [3...c5 4.Qd7+ Ka5 5.c4 Qc6 6.Qxc6 a6 7.Bd2#]

4.exd6 Rhe8

   [4...a5 5.Qd7+ Ka6 6.Bc4+ Kb7 7.Qxc7#]

   [4...c6 5.Qb7 Rhc8 6.a4+ Ka5 7.b4+ Kxa4 8.Qa6#]

   [4...Rae8 5.Qd7+ c6 6.Bc4+ Kxc4 7.Qxc6#]

   [4...Rhc8 5.c4+ Ka4 6.dxc7 Ka5 7.Qa3#]

   [4...c5 5.Qd7+ Ka5 6.c4 a6 7.Bd2#]

5.Qd7+ c6 6.Qxc6+ Ka5 7.b4+ Ka6 8.Qa4#



This page took 0 seconds to execute

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

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.