MESON Chess Problem Database

Problem Display
PID: 193394 (8/4p1b1/2PB1p2/5k1K/5p2/3P4/Q3P3/8 w - - 0 1)

van Dijk, Johannes

Magyar Sakkvilag, 1914

8/4p1b1/2PB1p2/5k1K/5p2/3P4/Q3P3/8

#2

6 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...f3
      • 2.e4#
    • 1...exd6
      • 2.Qd5#
  • Tries
    • 1.e3?
      • threat
        • 2.e4#
      • 1...exd6
        • 2.Qd5#
      • 1...fxe3!
  • Keys
    • 1.Qg8!
      • 1...exd6
        • 2.Qd5#
      • 1...Bh6
        • 2.Qg4#
      • 1...Bf8
        • 2.Qg4#
      • 1...Bh8
        • 2.Qg4#
      • 1...f3
        • 2.e4#
      • 1...e5
        • 2.Qc8#
      • 1...e6
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(a);N_GUARD::P(B)
    • P(d);N_GUARD,XB(F)::QAR2(A)
  • Tries
    • Try
      • P(B);
      • Threat
        • P(B)
      • Vars
        • P(d);N_GUARD,XB(F)::QAR2(A)
      • Refutation
        • P(a);XP(B)
  • Actual
    • Q(A);
    • Vars
      • P(d);N_GUARD,XB(F)::QAR2(A)
      • B(e);OGATE::QAB1(A)
      • P(a);N_GUARD::P(B)
      • P(d);N_GUARD::QAB(A)
      • P(d);SBLOCK::QAB(A)
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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).