MESON Chess Problem Database

Problem Display
PID: 258592 (5bB1/4N3/3p1k1p/8/6PN/2K1Q3/8/8 w - - 0 1)

Fothergill, Percival Guy Laugham (PGLF)

English Mechanic and World of Science, 1896

(First published on Fri Aug 21 1896)

5bB1/4N3/3p1k1p/8/6PN/2K1Q3/8/8

#2

6 + 4

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kg7
      • 2.Qd4#
    • 1...Bg7
      • 2.Sd5#
  • Tries
    • 1.Sef5?
      • 1...Be7
        • 2.Qxe7#
      • 1...Bg7
        • 2.Qe7#
      • 1...h5
        • 2.g5#
      • 1...d5!
    • 1.Qd4+?
      • 1...Kg5
        • 2.Sf3#
      • 1...Kxe7!
    • 1.Qf4+?
      • 1...Kg7
        • 2.Qd4#
      • 1...Kxe7!
    • 1.g5+?
      • 1...Kg7
        • 2.Qd4#
      • 1...hxg5!
  • Keys
    • 1.Sf3!
      • 1...Kg7
        • 2.Qd4#
      • 1...Bxe7
        • 2.Qxh6#
      • 1...d5
        • 2.Qe5#
      • 1...Bg7
        • 2.Qe6#
      • 1...h5
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);N_GUARD,S_FLIGHT::QAB(B)
    • B(d);SBLOCK::S(E)
  • Tries
    • Try
      • S(E);
      • Vars
        • B(d);N_GUARD::QAB1(B),XB(d)
        • B(d);N_GUARD::QAB1(B)
        • P(c);N_GUARD::P(C)
      • Refutation
        • P(a);
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);N_GUARD,S_FLIGHT::S(D)
      • Refutation
        • K(b);S_FLIGHT,XS(E)
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB(B)
      • Refutation
        • K(b);S_FLIGHT,XS(E)
    • Try
      • P(C);CHECK
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB(B)
      • Refutation
        • P(c);XP(C)
  • Actual
    • S(D);
    • Vars
      • K(b);N_GUARD,S_FLIGHT::QAB(B)
      • B(d);N_GUARD,SBLOCK,XS(E)::QAR2(B),XP(c)
      • P(a);N_GUARD::QAB1(B)
      • B(d);SBLOCK::QAR1(B)
      • P(c);N_GUARD::QAB1(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).