MESON Chess Problem Database

Problem Display
PID: 213167 (4nQ2/2p1PB2/2R2B1P/5k2/8/5K2/8/8 w - - 0 1)

Mortensen, Jan Robert (aka 'Adamas')

Land og Folk, 1967

4nQ2/2p1PB2/2R2B1P/5k2/8/5K2/8/8

#2

7 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qg7?
      • threat
        • 2.Be6#
        • 2.Bg6#
        • 2.Rc5#
        • 2.Qg4#
        • 2.Qg5#
        • 2.Qg6#
        • 2.Qh7#
      • 1...Sxf6
        • 2.Qxf6#
      • 1...Sd6
        • 2.Rc5#
        • 2.Qg5#
        • 2.Qg6#
      • 1...Sxg7!
    • 1.Qg8?
      • threat
        • 2.Bg6#
        • 2.Qh7#
        • 2.Qg4#
        • 2.Qg5#
        • 2.Qg6#
      • 1...Sd6
        • 2.Qg5#
        • 2.Qg6#
      • 1...Sg7
        • 2.Qh7#
      • 1...Sxf6!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Rc5#
        • 2.Qh7#
      • 1...Sxf6
        • 2.Qxf6#
      • 1...Sd6
        • 2.Rc5#
      • 1...Sg7
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);
      • Threat
        • DUALS(7)
      • Vars
        • S(c);OGATE,XB(C)::QAR1(G),XS(c)
      • Refutation
        • S(c);XQ(G)
    • Try
      • Q(G);
      • Threat
        • DUALS(5)
      • Vars
        • S(c);::QAB(G)
      • Refutation
        • S(c);XB(C)
  • Actual
    • Q(G);
    • Threat
      • DUALS(2)
    • Vars
      • S(c);OGATE,XB(C)::QAR1(G),XS(c)
      • S(c);::R(B)
      • S(c);::QAB(G)
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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).