MESON Chess Problem Database

Problem Display
PID: 108706 (5q2/4PPPn/R1N1Pk2/5N1P/3P1Q2/8/2K5/8 w - - 0 1)

Kraemer, Adolf Herrmann Rudolf Ferdinand

Themes-64, 1971

5q2/4PPPn/R1N1Pk2/5N1P/3P1Q2/8/2K5/8

#2

11 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sg5
      • 2.Qe5#
  • Tries
    • 1.Se5?
      • threat
        • 2.Sg4#
        • 2.Sd7#
      • 1...Qxe7
        • 2.Sg4#
        • 2.g8S#
      • 1...Qxg7
        • 2.Sd7#
        • 2.e8S#
      • 1...Qd8
        • 2.Sg4#
        • 2.exd8Q#
        • 2.exd8B#
      • 1...Qe8
        • 2.Sg4#
        • 2.fxe8S#
      • 1...Qc8+!
  • Keys
    • 1.Sd8!
      • 1...Qxe7
        • 2.g8S#
      • 1...Qxg7
        • 2.e8S#
      • 1...Qxf7
        • 2.exf7#
      • 1...Qxd8
        • 2.exd8Q#
        • 2.exd8B#
      • 1...Qe8
        • 2.fxe8S#
      • 1...Qg8
        • 2.fxg8S#
      • 1...Qh8
        • 2.gxh8Q#
        • 2.gxh8B#
      • 1...Sg5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::QAB1(C)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Refutation
        • Q(c);CHECK
  • Actual
    • S(G);
    • Vars
      • Q(c);N_GUARD,XP(I)::P=S
      • Q(c);N_GUARD,XP(K)::P=S
      • Q(c);OGATE,XP(J)::R(F)+P(H),XQ(c)
      • Q(c);OGATE,XS(G)::PXQ(c)=Q
      • Q(c);OGATE::PXQ(c)=S
      • Q(c);OGATE::PXQ(c)=Q
      • S(b);SBLOCK::QAB1(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).