MESON Chess Problem Database

Problem Display
PID: 146459 (8/8/2Kp2p1/3Nk1p1/4P1P1/8/5Q2/8 w - - 0 1)

Kubecka, Jan

Sachova skladba, 1985

8/8/2Kp2p1/3Nk1p1/4P1P1/8/5Q2/8

#2

5 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Qe3#
    • 1...Ke6
      • 2.Qf6#
  • Tries
    • 1.Kc7?
      • 1...Ke6
        • 2.Qf6#
      • 1...Kxe4!
    • 1.Qg1?
      • 1...Kxe4
        • 2.Qe3#
      • 1...Ke6!
    • 1.Qd4+?
      • 1...Ke6
        • 2.Qf6#
      • 1...Kxd4!
    • 1.Qb6?
      • 1...Kxe4
        • 2.Qe3#
      • 1...Ke6!
    • 1.Qb2+?
      • 1...Ke6
        • 2.Qf6#
      • 1...Kxe4!
    • 1.Qd2?
      • 1...Kxe4
        • 2.Qe3#
      • 1...Ke6!
    • 1.Qf3?
      • 1...Ke6
        • 2.Qf6#
      • 1...Kd4!
  • Keys
    • 1.Qa7!
      • 1...Kxe4
        • 2.Qe3#
      • 1...Ke6
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,P-FLIGHT,XP(B)::QAR1(A)
    • K(a);P-FLIGHT::QAR1(A)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,XP(B)
    • Try
      • Q(A);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(B)::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
    • Try
      • Q(A);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(B)::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,XP(B)
    • Try
      • Q(A);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(B)::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);OGATEB,P-FLIGHT,XP(B)::QAR1(A)
      • K(a);P-FLIGHT::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).