MESON Chess Problem Database

Problem Display
PID: 254675 (8/5p2/5N1R/5k2/8/4K3/4R3/4Q3 w - - 0 1)

Subotic, Miroslav

idee & form, 2017

8/5p2/5N1R/5k2/8/4K3/4R3/4Q3

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Qb4?
      • 1...Kg5
        • 2.Qf4#
      • 1...Ke6
        • 2.Kf4#
      • 1...Ke5!
    • 1.Qd1?
      • threat
        • 2.Qd5#
      • 1...Ke5
        • 2.Qd5#
      • 1...Ke6
        • 2.Kf4#
      • 1...Kg5!
    • 1.Qh1?
      • threat
        • 2.Qd5#
      • 1...Ke5
        • 2.Qd5#
      • 1...Kg5
        • 2.Qh5#
      • 1...Ke6!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qd5#
      • 1...Ke5
        • 2.Qd5#
      • 1...Kg5
        • 2.Ke4#
      • 1...Ke6
        • 2.Kf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAB1(A)
        • K(a);S_FLIGHT::R(B)+K(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::R(B)+K(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);N_GUARD,P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(a);P-FLIGHT::QAR1(A)
      • K(a);P-FLIGHT::QAB(A)+K(C)
      • K(a);S_FLIGHT::R(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).