MESON Chess Problem Database

Problem Display
PID: 23165 (8/5R2/3N4/3k4/1Qb2K2/3p4/8/8 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

8/5R2/3N4/3k4/1Qb2K2/3p4/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qxc4#
  • Tries
    • 1.Qc5+?
      • 1...Ke6
        • 2.Qe5#
      • 1...Kxc5!
  • Keys
    • 1.Sb7!
      • threat
        • 2.Qd6#
      • 1...Kd4
        • 2.Rd7#
      • 1...Kc6
        • 2.Qc5#
      • 1...Ke6
        • 2.Qxc4#
      • 1...Ba2
        • 2.Qe4#
      • 1...Bb3
        • 2.Qe4#
      • 1...Bb5
        • 2.Qe4#
      • 1...Ba6
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(c);P-FLIGHT,P_SPINB(b)::QAR1(A),XB(b)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • K(c);P-FLIGHT,XQ(A)
  • Actual
    • S(C);
    • Threat
      • QAR1(A)
    • Vars
      • K(c);P-FLIGHT,P_SPINB(b)::R(D)
      • K(c);S_FLIGHT::QAR1(A)
      • K(c);S_FLIGHT::QAB(A),XB(b)
      • B(b);OGATE::QAB1(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).