MESON Chess Problem Database

Problem Display
PID: 171020 (kBK5/1r6/N7/n7/5Q2/8/8/8 w - - 0 1)

Gheran, Nicoale

Comm., Buletin Problemistic, 1985

kBK5/1r6/N7/n7/5Q2/8/8/8

#2

4 + 3

145 StrateGems 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Sc7#
    • 1...Rb2
      • 2.Sc7#
    • 1...Rb3
      • 2.Sc7#
    • 1...Rb4
      • 2.Sc7#
    • 1...Rb5
      • 2.Sc7#
    • 1...Rb6
      • 2.Sc7#
    • 1...Rc7+
      • 2.Sxc7#
    • 1...Rxb8+
      • 2.Qxb8#
  • Keys
    • 1.Qc7!
      • 1...Rxc7+
        • 2.Sxc7#
      • 1...Rxb8+
        • 2.Qxb8#
      • 1...Ra7
        • 2.Qxa7#
      • 1...Rb1
        • 2.Qa7#
      • 1...Rb2
        • 2.Qa7#
      • 1...Rb3
        • 2.Qa7#
      • 1...Rb4
        • 2.Qa7#
      • 1...Rb5
        • 2.Qa7#
      • 1...Rb6
        • 2.Qa7#
      • 1...Sb3
        • 2.Qxb7#
      • 1...Sc4
        • 2.Qxb7#
      • 1...Sc6
        • 2.Qxb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 6
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(b);N_GUARD::S(B)
    • R(b);CHECK,N_GUARD::S(B),XR(b)
    • R(b);CHECK,OGATE,XB(C)::QAR1(A),XR(b)
  • Actual
    • Q(A);
    • Vars
      • R(b);CHECK,XQ(A)::S(B),XR(b)
      • R(b);CHECK,OGATE,XB(C)::QAR1(A),XR(b)
      • R(b);OGATE::QAR1(A),XR(b)
      • R(b);OGATE::QAR1(A)
      • S(a);N_GUARD::QAB1(A),XR(b)
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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).