MESON Chess Problem Database

Problem Display
PID: 23133 (8/8/6p1/4B2k/5Q2/7K/5b1n/8 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

8/8/6p1/4B2k/5Q2/7K/5b1n/8

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Qh4#
    • 1...Be3
      • 2.Qh4#
    • 1...Bd4
      • 2.Qh4#
    • 1...Bh4
      • 2.Qxh4#
    • 1...Bc5
      • 2.Qh4#
    • 1...Bb6
      • 2.Qh4#
    • 1...Ba7
      • 2.Qh4#
  • Tries
    • 1.Bf6?
      • threat
        • 2.Qg5#
      • 1...g5
        • 2.Qxg5#
      • 1...Be3
        • 2.Qh4#
      • 1...Bh4
        • 2.Qxh4#
      • 1...Sf3!
  • Keys
    • 1.Bg7!
      • threat
        • 2.Qh6#
      • 1...g5
        • 2.Qf7#
      • 1...Be3
        • 2.Qh4#
      • 1...Sg4
        • 2.Qxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • B(a);N_GUARD::QAR1(B)
    • B(a);N_GUARD::QAR1(B),XB(a)
    • B(a);N_GUARD,SBLOCK::QAR1(B)
  • Tries
    • Try
      • B(C);
      • Threat
        • QAR1(B)
      • Vars
        • P(d);::QAR1(B),XP(d)
        • B(a);N_GUARD::QAR1(B)
        • B(a);N_GUARD::QAR1(B),XB(a)
      • Refutation
        • S(b);
  • Actual
    • B(C);
    • Threat
      • QAR1(B)
    • Vars
      • P(d);OGATEB,SBLOCK::QAB(B)
      • B(a);N_GUARD::QAR1(B)
      • S(b);N_GUARD::QAB1(B),XS(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).