MESON Chess Problem Database

Problem Display
PID: 43814 (4nk1K/3P3Q/6p1/6Pb/6p1/6P1/8/8 w - - 0 1)

Kipping, Cyril Stanley

Nottinghamshire Guardian, 1912

4nk1K/3P3Q/6p1/6Pb/6p1/6P1/8/8

#2

5 + 5

4792 300 Chess Problems 1916
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sd6
      • 2.Qg7#
    • 1...Sf6
      • 2.Qg7#
    • 1...Sc7
      • 2.Qg7#
    • 1...Sg7
      • 2.Qxg7#
  • Tries
    • 1.Qxg6?
      • threat
        • 2.dxe8Q#
        • 2.dxe8R#
      • 1...Ke7
        • 2.dxe8Q#
      • 1...Sd6
        • 2.Qg7#
      • 1...Sf6
        • 2.Qg7#
      • 1...Sc7
        • 2.Qg7#
      • 1...Sg7
        • 2.Qxg7#
      • 1...Bxg6!
  • Keys
    • 1.d8B!
      • threat
        • 2.Be7#
        • 2.Qg8#
        • 2.Qe7#
      • 1...Sd6
        • 2.Qg8#
        • 2.Qe7#
      • 1...Sf6
        • 2.Qe7#
      • 1...Sc7
        • 2.Qg8#
        • 2.Qe7#
      • 1...Sg7
        • 2.Qg8#

This anticipates 206525(1925)

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • S(d);N_GUARD::QAB1(D)
    • S(d);N_GUARD::QAB1(D),XS(d)
  • Tries
    • Try
      • Q(D);XP(c)
      • Threat
        • PXS(d)=Q
      • Vars
        • K(e);S_FLIGHT::PXS(d)=Q
        • S(d);N_GUARD::QAB1(D)
        • S(d);N_GUARD::QAB1(D),XS(d)
      • Refutation
        • B(b);XQ(D)
  • Actual
    • P(C);
    • Threat
      • DUALS(3)
    • Vars
      • S(d);::QAB1(D)
      • S(d);::QAR1(D)
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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).