MESON Chess Problem Database

Problem Display
PID: 183189 (3n4/8/4p2p/2Q1N2k/4p2P/3p2p1/6P1/K6R w - - 0 1)

van Dijk, Johannes

Nederlandsch Schaaktijdschrift, 1907

3n4/8/4p2p/2Q1N2k/4p2P/3p2p1/6P1/K6R

#2

6 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qf8?
      • 1...Sc6
        • 2.Qf7#
        • 2.Qe8#
      • 1...Sb7
        • 2.Qf7#
        • 2.Qe8#
      • 1...Sf7
        • 2.Qxf7#
      • 1...e3
        • 2.Qf3#
      • 1...d2!
  • Keys
    • 1.Qf2!
      • 1...gxf2
        • 2.g4#
      • 1...Sc6
        • 2.Qf7#
      • 1...Sb7
        • 2.Qf7#
      • 1...Sf7
        • 2.Qxf7#
      • 1...d2
        • 2.Qe2#
      • 1...e3
        • 2.Qf3#

There are these versions: 187688

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);
      • Vars
        • S(g);N_GUARD::QAB(E),XS(g)
        • P(c);N_GUARD::QAB(E)
      • Refutation
        • P(a);
  • Actual
    • Q(E);
    • Vars
      • P(b);OGATE,XQ(E)::P(C)
      • S(g);N_GUARD::QAB(E)
      • S(g);N_GUARD::QAB(E),XS(g)
      • P(a);N_GUARD::QAB(E)
      • P(c);N_GUARD::QAB(E)
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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).