MESON Chess Problem Database

Problem Display
PID: 66481 (n5qR/3p2Qb/1ppNp3/k3P3/8/2Kp4/8/8 w - - 0 1)

Markx, BJM

Tijdschrift vd NSB, 1897

n5qR/3p2Qb/1ppNp3/k3P3/8/2Kp4/8/8

#2

5 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qf7
      • 2.Rxa8#
    • 1...Qxg7
      • 2.Rxa8#
  • Keys
    • 1.Qg1!
      • threat
        • 2.Qa1#
      • 1...Ka4
        • 2.Qa1#
      • 1...Ka6
        • 2.Qa1#
      • 1...Qxg1
        • 2.Rxa8#
      • 1...Qg2
        • 2.Rxa8#
      • 1...Qg4
        • 2.Rxa8#
      • 1...b5
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • Q(i);OGATE::R(E),XS(h)
    • Q(i);OGATE,P_PINP(B),XQ(D)::R(E),XS(h)
  • Actual
    • Q(D);
    • Threat
      • QAR(D)
    • Vars
      • K(b);P-FLIGHT::QAR(D)
      • Q(i);OGATE,XQ(D)::R(E),XS(h)
      • Q(i);OGATE::R(E),XS(h)
      • P(c);OGATE::QAR2(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).