MESON Chess Problem Database

Problem Display
PID: 179250 (5K2/5P2/1N2k3/4P1r1/4Q3/8/8/8 w - - 0 1)

Lincoln, Robert A

Problem Observer, 2010

5K2/5P2/1N2k3/4P1r1/4Q3/8/8/8

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe5
      • 2.Qg6#
    • 1...Rf5
      • 2.Qd5#
    • 1...Rg8+
      • 2.fxg8Q#
      • 2.fxg8B#
  • Keys
    • 1.Ke8!
      • threat
        • 2.f8S#
      • 1...Rg8+
        • 2.fxg8Q#
        • 2.fxg8B#
      • 1...Rxe5
        • 2.Qg6#
      • 1...Rf5
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(a);N_GUARD,P_SPINR(a),SBLOCK,XP(B)::QAR2(A)
    • R(a);P_PINP(D),SBLOCK::QAB1(A)
    • R(a);CHECK,OGATE::PXR(a)=Q
  • Actual
    • K(E);P-FLIGHT
    • Threat
      • P=S
    • Vars
      • R(a);CHECK,OGATE::PXR(a)=Q
      • R(a);N_GUARD,P_SPINR(a),SBLOCK,XP(B)::QAR2(A)
      • R(a);SBLOCK::QAB1(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).