MESON Chess Problem Database

Problem Display
PID: 27341 (8/5Q1B/2K2nb1/4PkqP/3R4/8/8/8 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

8/5Q1B/2K2nb1/4PkqP/3R4/8/8/8

#2

6 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Qd2
      • 2.Qxf6#
    • 1...Qe3
      • 2.Qxf6#
    • 1...Qh6
      • 2.Qxf6#
    • 1...Qg1
      • 2.Qxf6#
    • 1...Qg3
      • 2.Qxf6#
    • 1...Qg4
      • 2.Qxf6#
    • 1...Qxh5
      • 2.Qxf6#
  • Keys
    • 1.Kd6!
      • threat
        • 2.Qe6#
      • 1...Qxh5
        • 2.Qxf6#
      • 1...Qc1
        • 2.Qxg6#
        • 2.Qxf6#
      • 1...Qd2
        • 2.Qxg6#
        • 2.Qxf6#
      • 1...Qe3
        • 2.Qxg6#
        • 2.Qxf6#
      • 1...Qf4
        • 2.Qxg6#
      • 1...Qh4
        • 2.Qxg6#
      • 1...Qh6
        • 2.Qxf6#
      • 1...Qg1
        • 2.Qxf6#
      • 1...Qg2
        • 2.Qxf6#
      • 1...Qg3
        • 2.Qxf6#
      • 1...Qg4
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • Q(b);N_GUARD::QAR1(E),XS(c)
    • Q(b);N_GUARD,XP(C)::QAR1(E),XS(c)
  • Actual
    • K(D);P-FLIGHT
    • Threat
      • QAB1(E)
    • Vars
      • Q(b);N_GUARD,XP(C)::QAR1(E),XS(c)
      • Q(b);N_GUARD,P_PINP(B)::QAB1(E),XB(d)
      • Q(b);N_GUARD::QAB1(E),XB(d)
      • Q(b);N_GUARD::QAR1(E),XS(c)
      • Q(b);N_GUARD,P_PINP(B)::QAR1(E),XS(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).