MESON Chess Problem Database

Problem Display
PID: 12021 (7n/2Pk3r/N4pP1/1P3N2/R2Kn3/7B/4Q3/4R3 w - - 0 1)

Stosic, Miroslav

1st HM., The Problemist, 1973

7n/2Pk3r/N4pP1/1P3N2/R2Kn3/7B/4Q3/4R3

#2

10 + 5

56 The Problemist 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Sc5#
    • 1...Kc8
      • 2.Sd6#
    • 1...Ke8
      • 2.c8Q#
    • 1...Sd2
      • 2.Qe6#
      • 2.Qe8#
    • 1...Sf2
      • 2.Qe6#
      • 2.Qe8#
    • 1...Sc3
      • 2.Qe6#
      • 2.Qe8#
    • 1...Sg3
      • 2.Qe6#
      • 2.Qe8#
    • 1...Sc5
      • 2.Qe8#
    • 1...Sg5
      • 2.Qe8#
    • 1...Sd6
      • 2.Qe6#
  • Tries
    • 1.Qc4?
      • threat
        • 2.c8Q#
      • 1...Kc8
        • 2.Sd6#
      • 1...Ke8
        • 2.c8Q#
      • 1...Sd6
        • 2.Qe6#
      • 1...Sc5!
  • Keys
    • 1.Rc4!
      • threat
        • 2.c8Q#
      • 1...Ke6
        • 2.Sc5#
      • 1...Kc8
        • 2.Sd6#
      • 1...Ke8
        • 2.c8Q#
      • 1...Sc5
        • 2.Qe8#
      • 1...Sd6
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(c);P_SPINS(a),S_FLIGHT::S(H)
    • K(c);S_FLIGHT::B(C)+S(G),DCHECK
    • K(c);P_SPINS(a),S_FLIGHT::P=Q
    • S(a);OGATE::QAB1(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • P=Q
      • Vars
        • K(c);S_FLIGHT::B(C)+S(G),DCHECK
        • K(c);P_SPINS(a),S_FLIGHT::P=Q
        • S(a);::QAB1(B)
      • Refutation
        • S(a);
  • Actual
    • R(D);
    • Threat
      • P=Q
    • Vars
      • K(c);P_SPINS(a),S_FLIGHT::S(H)
      • K(c);S_FLIGHT::B(C)+S(G),DCHECK
      • K(c);P_SPINS(a),S_FLIGHT::P=Q
      • S(a);OGATE::QAB1(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).