MESON Chess Problem Database

Problem Display
PID: 23749 (8/4p3/8/1KPk4/8/4Q1N1/5n2/8 w - - 0 1)

Lincoln, Robert A

Newark Star-Ledger, 1996

8/4p3/8/1KPk4/8/4Q1N1/5n2/8

#2

4 + 3

2786 More Fun with Chess Miniatures 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qe4#
    • 1...Sh1
      • 2.Qe4#
    • 1...Sd3
      • 2.Qe4#
    • 1...Sh3
      • 2.Qe4#
    • 1...Se4
      • 2.Qxe4#
    • 1...Sg4
      • 2.Qe4#
  • Tries
    • 1.Qxe7?
      • threat
        • 2.Qd6#
      • 1...Se4
        • 2.Qxe4#
      • 1...Kd4!
  • Keys
    • 1.Qf4!
      • 1...Ke6
        • 2.Qf5#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sd1
        • 2.Qe4#
      • 1...Sh1
        • 2.Qe4#
      • 1...Sd3
        • 2.Qe4#
      • 1...Sh3
        • 2.Qe4#
      • 1...Sg4
        • 2.Qe4#
      • 1...e5
        • 2.Qc4#
      • 1...e6
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB1(A)
    • S(a);N_GUARD::QAB1(A),XS(a)
  • Tries
    • Try
      • Q(A);XP(c)
      • Threat
        • QAR1(A)
      • Vars
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT::QAB1(A)
      • S(a);N_GUARD::QAB1(A),XS(a)
      • S(a);N_GUARD::QAB1(A)
      • P(c);SBLOCK::QAB1(A)
      • P(c);N_GUARD::QAR1(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).