MESON Chess Problem Database

Problem Display
PID: 199473 (2NbK3/8/8/1P1k2N1/5Pp1/P1Q1pb2/qpP5/3r4 w - - 0 1)

Shire, David J

Suomen Shakki, 1988

2NbK3/8/8/1P1k2N1/5Pp1/P1Q1pb2/qpP5/3r4

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qc4
      • 2.Qe5#
    • 1...Rd4
      • 2.Qc6#
  • Tries
    • 1.Sb6+?
      • 1...Kd6
        • 2.Qe5#
      • 1...Bxb6!
    • 1.Sd6?
      • threat
        • 2.Qe5#
      • 1...Kxd6
        • 2.Qe5#
      • 1...Rd4
        • 2.Qc6#
      • 1...Bf6!
    • 1.Se7+?
      • 1...Kd6
        • 2.Qe5#
      • 1...Bxe7!
  • Keys
    • 1.Se6!
      • threat
        • 2.Qc6#
      • 1...Ke4
        • 2.Qe5#
      • 1...Kxe6
        • 2.Qe5#
      • 1...Qc4
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(b);SBLOCK::QAR1(C)
    • R(a);SBLOCK::QAB1(C)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(g);P-FLIGHT::QAB1(C)
      • Refutation
        • B(h);XS(G)
    • Try
      • S(G);
      • Threat
        • QAR1(C)
      • Vars
        • K(g);P-FLIGHT,XS(G)::QAB1(C)
        • R(a);SBLOCK::QAB1(C)
      • Refutation
        • B(h);
    • Try
      • S(G);CHECK
      • Vars
        • K(g);P-FLIGHT::QAB1(C)
      • Refutation
        • B(h);XS(G)
  • Actual
    • S(F);
    • Threat
      • QAB1(C)
    • Vars
      • K(g);S_FLIGHT::QAR1(C)
      • K(g);S_FLIGHT,XS(F)::QAR1(C)
      • Q(b);SBLOCK::QAR1(C)
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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).