MESON Chess Problem Database

Problem Display
PID: 180168 (8/8/5p2/5pk1/5N2/7P/4QK2/8 w - - 0 1)

Utarova, Alana

Sachmatija, 2015

8/8/5p2/5pk1/5N2/7P/4QK2/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf4
      • 2.Qe3#
    • 1...Kh4
      • 2.Qh5#
  • Tries
    • 1.Qd3?
      • 1...Kxf4
        • 2.Qe3#
      • 1...Kh4
        • 2.Qg3#
      • 1...Kh6!
    • 1.Qf3?
      • 1...Kh4
        • 2.Qh5#
        • 2.Qg3#
      • 1...Kh6!
    • 1.Qg4+?
      • 1...Kh6
        • 2.Qg6#
      • 1...fxg4!
    • 1.Qe3?
      • 1...Kh4
        • 2.Qg3#
      • 1...Kh6!
    • 1.Qe6?
      • 1...Kxf4
        • 2.Qe3#
      • 1...Kh4
        • 2.Qxf6#
      • 1...Kh6!
    • 1.Qe7?
      • 1...Kxf4
        • 2.Qe3#
      • 1...Kh4
        • 2.Qxf6#
      • 1...Kh6!
  • Keys
    • 1.Qe8!
      • 1...Kxf4
        • 2.Qe3#
      • 1...Kh4
        • 2.Qh5#
      • 1...Kh6
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,S_FLIGHT,XS(D)::QAB1(A)
    • K(b);S_FLIGHT::QAR1(A)
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(D)::QAB1(A)
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(D)::QAB1(A)
        • K(b);S_FLIGHT::QAB(A),XP(c)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT
    • Try
      • Q(A);P_PINP(c)
      • Vars
        • K(b);N_SPINP(c),OGATEB,S_FLIGHT,XS(D)::QAB1(A)
        • K(b);S_FLIGHT::QAB(A),XP(c)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(D)::QAB1(A)
      • K(b);S_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).