MESON Chess Problem Database

Problem Display
PID: 175740 (8/1Q1p4/1PpKp3/1b6/2k5/1pP5/3PP3/8 w - - 0 1)

van Dijk, Johannes

Tijdschrift vd NSB, 1898

8/1Q1p4/1PpKp3/1b6/2k5/1pP5/3PP3/8

#2

6 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ba6
      • 2.Qxa6#
    • 1...c5
      • 2.Qe4#
  • Tries
    • 1.Qxd7?
      • threat
        • 2.Qxe6#
      • 1...Ba6
        • 2.Qxc6#
      • 1...e5
        • 2.Qe6#
        • 2.Qf7#
      • 1...Ba4!
  • Keys
    • 1.Qa8!
      • 1...Ba4
        • 2.Qxa4#
      • 1...Ba6
        • 2.Qxa6#
      • 1...b2
        • 2.Qa2#
      • 1...c5
        • 2.Qe4#
      • 1...e5
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(c);OGATEB::QAB(F),XB(c)
    • P(d);OGATE::QAR2(F)
  • Tries
    • Try
      • Q(F);XP(f)
      • Threat
        • QAB(F),XP(e)
      • Vars
        • B(c);N_GUARD::QAR2(F),XP(d)
      • Refutation
        • B(c);
  • Actual
    • Q(F);
    • Vars
      • B(c);N_GUARD::QAR2(F),XB(c)
      • B(c);OGATEB::QAB(F),XB(c)
      • P(a);OGATEB::QAB(F)
      • P(d);OGATE::QAR2(F)
      • P(e);OGATEB::QAB(F)
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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).