MESON Chess Problem Database

Problem Display
PID: 17865 (5Q2/3q4/6k1/4R3/6p1/3pB3/8/6K1 w - - 0 1)

Martin, Godefroy Jose

Morice, Jean

Parallele 50, 1951

5Q2/3q4/6k1/4R3/6p1/3pB3/8/6K1

#2

4 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Qf7
      • 2.Qh6#
    • 1...Qg7
      • 2.Qf5#
    • 1...Qh7
      • 2.Rg5#
  • Tries
    • 1.Re6+?
      • 1...Kh5
        • 2.Rh6#
        • 2.Qh6#
      • 1...Kh7
        • 2.Rh6#
      • 1...Qxe6!
  • Keys
    • 1.Rh5!
      • threat
        • 2.Rh6#
      • 1...Kxh5
        • 2.Qh6#
      • 1...Qf7
        • 2.Qh6#
      • 1...Qg7
        • 2.Qf5#
      • 1...Qh7
        • 2.Rg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(d);SBLOCK::QAR1(D)
    • Q(d);N_GUARD,SBLOCK::QAB1(D)
    • Q(d);SBLOCK::R1(C)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::R1(C)
      • Refutation
        • Q(d);XR(C)
  • Actual
    • R(C);
    • Threat
      • R1(C)
    • Vars
      • K(c);S_FLIGHT,XR(C)::QAR1(D)
      • Q(d);SBLOCK::QAR1(D)
      • Q(d);N_GUARD,SBLOCK::QAB1(D)
      • Q(d);SBLOCK::R1(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).