MESON Chess Problem Database

Problem Display
PID: 170469 (5K1k/6rr/7N/8/3R4/8/8/6Q1 w - - 0 1)

Wermelinger, Charles

Basler Nachrichten, 1950

5K1k/6rr/7N/8/3R4/8/8/6Q1

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Qg8#
    • 1...Rb7
      • 2.Qg8#
    • 1...Rc7
      • 2.Qg8#
    • 1...Rd7
      • 2.Qg8#
    • 1...Re7
      • 2.Qg8#
    • 1...Rg8+
      • 2.Qxg8#
    • 1...Rxh6
      • 2.Qxg7#
  • Keys
    • 1.Rh4!
      • 1...Rf7+
        • 2.Sxf7#
      • 1...Rg8+
        • 2.Qxg8#
      • 1...Rxg1
        • 2.Sf7#
      • 1...Rxh6
        • 2.Qxg7#
      • 1...Rg2
        • 2.Sf7#
      • 1...Rg3
        • 2.Sf7#
      • 1...Rg4
        • 2.Sf7#
      • 1...Rg5
        • 2.Sf7#
      • 1...Rg6
        • 2.Sf7#
      • 1...Ra7
        • 2.Qg8#
      • 1...Rb7
        • 2.Qg8#
      • 1...Rc7
        • 2.Qg8#
      • 1...Rd7
        • 2.Qg8#
      • 1...Re7
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • R(a);OGATE::QAR1(A)
    • R(a);CHECK,OGATE::QAR1(A),XR(a)
    • R(b);N_GUARD,XS(C)::QAB1(A),XR(a)
  • Actual
    • R(B);
    • Vars
      • R(a);CHECK,N_GUARD::S(C),XR(a)
      • R(a);CHECK,OGATE::QAR1(A),XR(a)
      • R(a);N_GUARD,XQ(A)::S(C)
      • R(b);N_GUARD,P_SPINR(b),XS(C)::QAB1(A),XR(a)
      • R(a);N_GUARD::S(C)
      • R(a);OGATE::QAR1(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).