MESON Chess Problem Database

Problem Display
PID: 1092 (6Bk/7r/5K2/8/8/8/1B6/Q7 w - - 0 1)

Taylor, I(J)ohn Odin Howard

The Westminster Papers, 1872

6Bk/7r/5K2/8/8/8/1B6/Q7

#2

4 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kxg8
      • 2.Qa8#
    • 1...Rh1
      • 2.Kf7#
    • 1...Rf7+
      • 2.Kxf7#
  • Tries
    • 1.Ke6+?
      • 1...Kxg8
        • 2.Qa8#
      • 1...Rg7!
    • 1.Kg6+?
      • 1...Kxg8
        • 2.Qa8#
      • 1...Rg7+!
  • Keys
    • 1.Qh1!
      • threat
        • 2.Qxh7#
      • 1...Rh6+
        • 2.Kf7#
      • 1...Kxg8
        • 2.Qa8#
      • 1...Rxh1
        • 2.Kf7#
      • 1...Rh2
        • 2.Kf7#
      • 1...Rh3
        • 2.Kf7#
      • 1...Rh4
        • 2.Kf7#
      • 1...Rh5
        • 2.Kf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • K(b);OGATEB,P-FLIGHT,XB(D)::QAR(A)
    • R(a);::B(B)+K(C)
    • R(a);CHECK::B(B)+K(C),XR(a)
  • Tries
    • Try
      • K(C);CHECK,P-FLIGHT
      • Vars
        • K(b);P-FLIGHT,XB(D)::QAR(A)
      • Refutation
        • R(a);P_SPINR(a)
    • Try
      • K(C);CHECK,P-FLIGHT
      • Vars
        • K(b);P-FLIGHT,XB(D)::QAR(A)
      • Refutation
        • R(a);CHECK,P_SPINR(a)
  • Actual
    • Q(A);P_PINR(a)
    • Threat
      • QAR1(A),XR(a)
    • Vars
      • R(a);CHECK::B(B)+K(C)
      • K(b);N_SPINR(a),OGATEB,P-FLIGHT,XB(D)::QAR(A)
      • R(a);N_SPINR(a),XQ(A)::B(B)+K(C)
      • R(a);::B(B)+K(C)
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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).