MESON Chess Problem Database

Problem Display
PID: 46734 (3n2qN/4B1P1/4pp1k/6N1/6Q1/K7/8/8 w - - 0 1)

Havel, Miroslav

Sachove listy, 1900

3n2qN/4B1P1/4pp1k/6N1/6Q1/K7/8/8

#2

6 + 5

6024 Bohemian Garnets 1923
4312 Ceske Granaty 1975

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg7
      • 2.Qh4#
    • 1...Qf8
      • 2.gxf8Q#
      • 2.gxf8B#
  • Tries
    • 1.Sgf7+?
      • 1...Kh7
        • 2.Qg6#
      • 1...Sxf7
        • 2.Qg6#
      • 1...Qxf7!
  • Keys
    • 1.Bf8!
      • threat
        • 2.Qh4#
      • 1...Qxf8+
        • 2.gxf8Q#
        • 2.gxf8B#
      • 1...Qxh8
        • 2.gxh8S#
      • 1...fxg5
        • 2.Qh3#
      • 1...Qf7
        • 2.g8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(e);SBLOCK,XP(E)::QAR2(B)
    • Q(e);OGATE,P_PINB(D)::PXQ(e)=Q
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(B)
        • S(d);XS(C)::QAR1(B)
      • Refutation
        • Q(e);XS(C)
  • Actual
    • B(D);
    • Threat
      • QAR2(B)
    • Vars
      • Q(e);CHECK,OGATE,XB(D)::PXQ(e)=Q
      • Q(e);OGATE,XS(F)::PXQ(e)=S
      • P(b);SBLOCK,XS(C)::QAR(B)
      • Q(e);OGATE::P=S
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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).