MESON Chess Problem Database

Problem Display
PID: 248980 (3k4/1K1pppN1/2p5/8/8/8/4Q3/5R2 w - - 0 1)

Degener, Udo

Albrecht-Leiss-Degener Collection, 0000

3k4/1K1pppN1/2p5/8/8/8/4Q3/5R2

#2

4 + 5

SOLUTION

  • SOUND
  • Tries
    • 1.Qe5?
      • threat
        • 2.Qc7#
        • 2.Qb8#
        • 2.Qa5#
      • 1...d5
        • 2.Qc7#
      • 1...e6
        • 2.Qf6#
      • 1...c5
        • 2.Qc7#
        • 2.Qb8#
      • 1...d6!
  • Keys
    • 1.Qe6!
      • 1...dxe6
        • 2.Rd1#
      • 1...fxe6
        • 2.Rf8#
      • 1...c5
        • 2.Qb6#
      • 1...d5
        • 2.Qc8#
      • 1...d6
        • 2.Qc8#
      • 1...f5
        • 2.Qg8#
      • 1...f6
        • 2.Qg8#

This is a version of 144256

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(3)
      • Vars
        • P(b);::QAB1(B)
        • P(c);OGATEB::QAB(B)
      • Refutation
        • P(b);
  • Actual
    • Q(B);
    • Vars
      • P(b);OGATEB,XQ(B)::R(A)
      • P(d);OGATE,XQ(B)::R(A)
      • P(a);OGATE::QAB(B)
      • P(b);OGATE::QAR1(B)
      • P(d);OGATE::QAR(B)
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).