MESON Chess Problem Database

Problem Display
PID: 24205 (8/7p/7Q/4N3/2Npk3/7P/BP6/5K2 w - - 0 1)

van Beek, Huibrecht

van Dijk, Johannes

Tijdschrift vd NSB, 1897

8/7p/7Q/4N3/2Npk3/7P/BP6/5K2

#2

7 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qc6#
  • Tries
    • 1.Bb1+?
      • 1...Kd5
        • 2.Qc6#
        • 2.Qd6#
      • 1...d3!
    • 1.Qf6?
      • threat
        • 2.Qf3#
      • 1...Kd5
        • 2.Qc6#
      • 1...d3!
    • 1.Qg6+?
      • 1...Kf4
        • 2.Qg4#
      • 1...Kd5
        • 2.Qc6#
      • 1...hxg6!
  • Keys
    • 1.Sd3!
      • 1...Kxd3
        • 2.Qxh7#
      • 1...Kf3
        • 2.Qf4#
      • 1...Kd5
        • 2.Sd2#
      • 1...Kf5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB1(G)
  • Tries
    • Try
      • B(B);CHECK
      • Refutation
        • P(a);P_SPINP(a)
    • Try
      • Q(G);
      • Threat
        • QAB1(G)
      • Vars
        • K(b);S_FLIGHT::QAB1(G)
      • Refutation
        • P(a);
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(G)
        • K(b);S_FLIGHT::QAB1(G)
      • Refutation
        • P(c);XQ(G)
  • Actual
    • S(F);
    • Vars
      • K(b);S_FLIGHT,XS(F)::QAB(G),XP(c)
      • K(b);S_FLIGHT::QAR1(G)
      • K(b);S_FLIGHT::B(B)+S(E)
      • K(b);S_FLIGHT::S(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).