Problem Display
PID: 18239 (8/2P2PR1/4k3/8/8/2K5/8/6Q1 w - - 0 1)

Zlatic, Dr Savo

Problem (Zagreb), 1954

8/2P2PR1/4k3/8/8/2K5/8/6Q1

#2

5 + 1


SOLUTION


  • SOUND
  • Tries
    • 1.Qd4?
      • 1...Kf5
        • 2.c8Q#
        • 2.c8B#
      • 1...Ke7!
    • 1.Qc5?
      • 1...Kd7
        • 2.c8Q#
      • 1...Kf6!
  • Keys
    • 1.c8Q+!
      • 1...Kd5
        • 2.Qd4#
      • 1...Ke5
        • 2.Qd4#
      • 1...Kd6
        • 2.Qgc5#
      • 1...Kf6
        • 2.Qg5#
      • 1...Ke7
        • 2.f8Q#

FEATURES


  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::P=Q
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::P=Q
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • P(C);CHECK
    • Vars
      • K(a);S_FLIGHT::QAR1(A)
      • K(a);P-FLIGHT::QAB1(A)
      • K(a);P-FLIGHT::P=Q


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).