MESON Chess Problem Database

Problem Display
PID: 23109 (7n/5P2/5Q1p/7k/5b2/7K/8/8 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

7n/5P2/5Q1p/7k/5b2/7K/8/8

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Qf5#
    • 1...Bg3
      • 2.Qf5#
    • 1...Be5
      • 2.Qf5#
    • 1...Bd6
      • 2.Qf5#
    • 1...Bc7
      • 2.Qf5#
    • 1...Bb8
      • 2.Qf5#
  • Tries
    • 1.Qxf4?
      • threat
        • 2.Qg4#
        • 2.Qf5#
      • 1...Sxf7
        • 2.Qg4#
      • 1...Kg6!
  • Keys
    • 1.f8S!
      • threat
        • 2.Qh4#
      • 1...Bg5
        • 2.Qf3#
      • 1...Bg3
        • 2.Qf5#
      • 1...Sg6
        • 2.Qxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • B(a);N_GUARD::QAR2(B)
  • Tries
    • Try
      • Q(B);XB(a)
      • Threat
        • DUALS(2)
      • Vars
        • S(d);XP(C)::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • P(C);
    • Threat
      • QAR1(B)
    • Vars
      • B(a);OGATE,SBLOCK::QAB(B)
      • B(a);N_GUARD::QAR2(B)
      • S(d);N_GUARD::QAB1(B),XS(d)
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).