MESON Chess Problem Database

Problem Display
PID: 86 (k7/1p1N4/p2P4/1N6/2pp4/K2BB3/8/2Q5 w - - 0 1)

Giegold, Fritz Emil

Munchner Illustrierte, 1930

k7/1p1N4/p2P4/1N6/2pp4/K2BB3/8/2Q5

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...cxd3
      • 2.Qc8#
    • 1...b6
      • 2.Be4#
      • 2.Qh1#
  • Tries
    • 1.Bxd4?
      • threat
        • 2.Sc7#
      • 1...b6
        • 2.Be4#
        • 2.Qh1#
      • 1...axb5!
    • 1.Qf1?
      • threat
        • 2.Qf8#
      • 1...b6
        • 2.Be4#
        • 2.Qg2#
        • 2.Qh1#
        • 2.Qf3#
      • 1...axb5!
    • 1.Qg1?
      • threat
        • 2.Qg8#
      • 1...b6
        • 2.Be4#
        • 2.Qh1#
        • 2.Qg2#
      • 1...axb5!
    • 1.Qxc4?
      • threat
        • 2.Qg8#
        • 2.Qc8#
      • 1...b6
        • 2.Be4#
        • 2.Qd5#
        • 2.Qc6#
        • 2.Qc8#
      • 1...axb5!
  • Keys
    • 1.Qc3!
      • 1...cxd3
        • 2.Qc8#
      • 1...dxc3
        • 2.Sc7#
      • 1...dxe3
        • 2.Qh8#
      • 1...axb5
        • 2.Qa5#
      • 1...b6
        • 2.Be4#
      • 1...a5
        • 2.Qxa5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATE,XB(C)::QAR2(A)
  • Tries
    • Try
      • B(D);XP(b)
      • Threat
        • S(E)
      • Refutation
        • P(c);XS(E)
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Refutation
        • P(c);XS(E)
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Refutation
        • P(c);XS(E)
    • Try
      • Q(A);XP(a)
      • Threat
        • DUALS(2)
      • Refutation
        • P(c);XS(E)
  • Actual
    • Q(A);
    • Vars
      • P(a);OGATE,XB(C)::QAR2(A)
      • P(b);XQ(A)::S(E)
      • P(b);OGATE,XB(D)::QAB1(A)
      • P(c);OGATEB,XS(E)::QAR(A)
      • P(d);OGATEB::B(C)
      • P(c);OGATEB::QAR(A),XP(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).