MESON Chess Problem Database

Problem Display
PID: 47430 (8/8/4p3/N2p2K1/4k3/5p2/3Q4/8 w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

8/8/4p3/N2p2K1/4k3/5p2/3Q4/8

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qf4#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Qd4#
      • 1...f2
        • 2.Qe2#
      • 1...d4
        • 2.Qxd4#
      • 1...e5!
  • Keys
    • 1.Sb3!
      • threat
        • 2.Qd4#
      • 1...Ke5
        • 2.Qf4#
      • 1...f2
        • 2.Qe2#
      • 1...d4
        • 2.Qxd4#
      • 1...e5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAB1(A)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR1(A)
      • Vars
        • P(a);N_GUARD::QAR2(A)
        • P(c);::QAR1(A),XP(c)
      • Refutation
        • P(d);
  • Actual
    • S(B);
    • Threat
      • QAR1(A)
    • Vars
      • K(b);P-FLIGHT::QAB1(A)
      • P(a);N_GUARD::QAR2(A)
      • P(c);::QAR1(A),XP(c)
      • P(d);SBLOCK::S(B)
HTML5 logo

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).