MESON Chess Problem Database

Problem Display
PID: 27795 (8/6K1/8/8/2R5/4N1pk/3Q1Pr1/8 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

8/6K1/8/8/2R5/4N1pk/3Q1Pr1/8

#2

5 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Rh2
      • 2.Qd7#
  • Tries
    • 1.Qd1?
      • threat
        • 2.Qh5#
      • 1...Kh2
        • 2.Rh4#
      • 1...gxf2+!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Qxg2#
        • 2.Qh5#
      • 1...gxf2+
        • 2.Qxg2#
      • 1...Kh2
        • 2.Qxg2#
      • 1...Rxf2
        • 2.Qh5#
      • 1...Rg1
        • 2.Qh5#
      • 1...Rh2
        • 2.Qe6#
        • 2.Qf5#
        • 2.Qh5#
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(a);SBLOCK::QAB(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(c);P-FLIGHT::R(D)
      • Refutation
        • P(b);CHECK,XP(B)
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • P(b);CHECK,XP(B)::QAB1(A),XR(a)
      • K(c);P-FLIGHT::QAR1(A),XR(a)
      • R(a);XP(B)::QAR2(A)
      • R(a);::QAR2(A)
HTML5 logo

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).