MESON Chess Problem Database

Problem Display
PID: 66269 (8/5p2/Q4nb1/4p3/3Nk3/7P/2PPN3/6K1 w - - 0 1)

van Eelde, Antonie Clarus Johannes

Tijdschrift vd NSB, 1896

8/5p2/Q4nb1/4p3/3Nk3/7P/2PPN3/6K1

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qc6#
    • 1...Sg4
      • 2.Qb7#
      • 2.Qc6#
      • 2.Qa8#
    • 1...Sd5
      • 2.Qd3#
    • 1...Sh5
      • 2.Qb7#
      • 2.Qc6#
      • 2.Qa8#
    • 1...Sd7
      • 2.Qb7#
      • 2.Qc6#
      • 2.Qa8#
    • 1...Sh7
      • 2.Qb7#
      • 2.Qc6#
      • 2.Qa8#
    • 1...Se8
      • 2.Qb7#
      • 2.Qc6#
      • 2.Qa8#
    • 1...Sg8
      • 2.Qb7#
      • 2.Qc6#
      • 2.Qa8#
  • Tries
    • 1.Qxf6?
      • threat
        • 2.Qf3#
        • 2.Qc6#
      • 1...Kd5
        • 2.Qc6#
      • 1...Bf5
        • 2.Qc6#
      • 1...Bh5
        • 2.Qc6#
      • 1...exd4!
    • 1.d3+?
      • 1...Kd5
        • 2.Qc6#
      • 1...Ke3!
  • Keys
    • 1.Se6!
      • threat
        • 2.Qd3#
      • 1...Kf3
        • 2.Sg5#
      • 1...Kd5
        • 2.Sc3#
      • 1...Kf5
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(a);S_FLIGHT::QAB1(G)
    • S(c);SBLOCK::QAB1(G)
  • Tries
    • Try
      • Q(G);XS(c)
      • Threat
        • DUALS(2)
      • Vars
        • K(a);S_FLIGHT::QAB1(G)
        • B(d);::QAB(G)
      • Refutation
        • P(b);XS(F)
    • Try
      • P(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(G)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(F);
    • Threat
      • QAB1(G)
    • Vars
      • K(a);S_FLIGHT::S(F)
      • K(a);S_FLIGHT::S(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).