MESON Chess Problem Database

Problem Display
PID: 152949 (2k3K1/6RQ/8/8/8/8/2rp4/8 w - - 0 1)

Harley, Brian

Social Chess Quarterly (The), 1935

2k3K1/6RQ/8/8/8/8/2rp4/8

#2

3 + 3

15290 Harley Scrapbook 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Qe4?
      • threat
        • 2.Qa8#
        • 2.Qe8#
      • 1...Kb8
        • 2.Qb7#
      • 1...d1Q
        • 2.Qa8#
      • 1...d1R
        • 2.Qa8#
      • 1...Ra2
        • 2.Qe8#
      • 1...Rb2
        • 2.Qe8#
      • 1...Rc6
        • 2.Qe8#
      • 1...Rc7
        • 2.Qa8#
      • 1...Kd8!
    • 1.Qf5+?
      • 1...Kd8
        • 2.Qd7#
        • 2.Qf8#
      • 1...Kb8!
    • 1.Qh3+?
      • 1...Kd8
        • 2.Qd7#
      • 1...Kb8!
  • Keys
    • 1.Ra7!
      • threat
        • 2.Ra8#
      • 1...Kb8
        • 2.Qb7#
      • 1...Kd8
        • 2.Qd7#
      • 1...Ra2
        • 2.Qc7#
      • 1...Rb2
        • 2.Qc7#
      • 1...Rc7
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P-FLIGHT::QAR1(B)
        • P(b);::QAR2(B)
        • R(a);::QAR2(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(B)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • R(A);
    • Threat
      • R(A)
    • Vars
      • K(c);P-FLIGHT::QAR1(B)
      • R(a);N_GUARD::QAR1(B)
      • R(a);N_GUARD::QAR1(B),XR(a)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).