MESON Chess Problem Database

Problem Display
PID: 23155 (8/N2Q4/6n1/8/4k3/1n3R2/5K2/8 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

8/N2Q4/6n1/8/4k3/1n3R2/5K2/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.Re3#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Qf5#
        • 2.Qd3#
      • 1...Sc1
        • 2.Qf5#
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sc5
        • 2.Qf5#
        • 2.Qd4#
      • 1...Sf4
        • 2.Re3#
      • 1...Sh4
        • 2.Qe6#
        • 2.Qd3#
      • 1...Se7
        • 2.Qe6#
        • 2.Qd3#
      • 1...Se5!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Qf5#
      • 1...Ke5
        • 2.Qf5#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sf4
        • 2.Re3#
      • 1...Sh4
        • 2.Qe6#
      • 1...Se5
        • 2.Sc3#
      • 1...Se7
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(c);SBLOCK::R1(B)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);N_GUARD::QAR1(D),XS(a)
        • S(c);SBLOCK::R1(B)
      • Refutation
        • S(c);
  • Actual
    • S(C);
    • Threat
      • QAB1(D)
    • Vars
      • K(b);P-FLIGHT::QAR1(D)
      • S(a);N_GUARD::QAR1(D),XS(a)
      • S(c);SBLOCK::R1(B)
      • S(c);N_GUARD::QAR2(D)
      • S(c);SBLOCK::S(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).