MESON Chess Problem Database

Problem Display
PID: 203636 (5Nkr/4Q3/5P2/6Kn/8/8/8/8 w - - 0 1)

Henke, Walter

Arbeiter Schachzeitung, 1924

5Nkr/4Q3/5P2/6Kn/8/8/8/8

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sg3
      • 2.Qg7#
    • 1...Sf4
      • 2.Qg7#
    • 1...Sg7
      • 2.Qxg7#
      • 2.f7#
  • Tries
    • 1.Se6?
      • 1...Sxf6
        • 2.Qg7#
      • 1...Rh7
        • 2.Qf8#
        • 2.Qe8#
      • 1...Sg7
        • 2.Qxg7#
      • 1...Sg3
        • 2.Qg7#
      • 1...Sf4
        • 2.Qg7#
      • 1...Rh6!
    • 1.Sd7?
      • 1...Sxf6
        • 2.Sxf6#
      • 1...Rh7
        • 2.Qf8#
        • 2.Qe8#
      • 1...Sg7
        • 2.Qxg7#
      • 1...Sg3
        • 2.Qg7#
      • 1...Sf4
        • 2.Qg7#
      • 1...Rh6!
  • Keys
    • 1.Sh7!
      • 1...Rxh7
        • 2.Qe8#
      • 1...Sxf6
        • 2.Sxf6#
      • 1...Sg7
        • 2.Qxg7#
      • 1...Sg3
        • 2.Qg7#
      • 1...Sf4
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAR1(C)
  • Tries
    • Try
      • S(D);
      • Vars
        • S(a);N_GUARD,XP(B)::QAR1(C)
        • S(a);N_GUARD::QAR1(C),XS(a)
        • S(a);N_GUARD::QAR1(C)
      • Refutation
        • R(c);
    • Try
      • S(D);
      • Vars
        • S(a);XP(B)::S(D),XS(a)
        • S(a);N_GUARD::QAR1(C),XS(a)
        • S(a);N_GUARD::QAR1(C)
      • Refutation
        • R(c);
  • Actual
    • S(D);
    • Vars
      • R(c);SBLOCK,XS(D)::QAR2(C)
      • S(a);XP(B)::S(D),XS(a)
      • S(a);N_GUARD::QAR1(C),XS(a)
      • S(a);N_GUARD::QAR1(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).