MESON Chess Problem Database

Problem Display
PID: 228822 (2K5/4p3/2pk4/3N1R2/8/6N1/2Q5/8 w - - 0 1)

Fothergill, Percival Guy Laugham (PGLF)

The Field, 1896

(First published on Sat Sep 26 1896)

2K5/4p3/2pk4/3N1R2/8/6N1/2Q5/8

#2

5 + 3

236 The Field 1897
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Qxc6#
    • 1...e6
      • 2.Se4#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Se4#
        • 2.Qd1#
        • 2.Qd3#
        • 2.Qd2#
        • 2.Qc5#
      • 1...c5
        • 2.Qxc5#
      • 1...e6
        • 2.Qc5#
      • 1...e5!
    • 1.Sc7?
      • threat
        • 2.Se4#
        • 2.Qd1#
        • 2.Qd3#
        • 2.Qd2#
        • 2.Qc5#
      • 1...c5
        • 2.Qxc5#
      • 1...e6
        • 2.Qc5#
      • 1...e5!
    • 1.Qd3?
      • threat
        • 2.Sf4#
        • 2.Sc7#
      • 1...Kc5
        • 2.Se4#
      • 1...Ke6
        • 2.Sf4#
        • 2.Sc7#
      • 1...cxd5
        • 2.Qxd5#
      • 1...c5
        • 2.Qa6#
      • 1...e6
        • 2.Se4#
      • 1...e5!
    • 1.Qb2?
      • 1...Kc5
        • 2.Qb4#
      • 1...Ke6
        • 2.Qe5#
      • 1...cxd5
        • 2.Qb6#
      • 1...c5
        • 2.Qb6#
      • 1...e6
        • 2.Se4#
      • 1...e5!
    • 1.Qc5+?
      • 1...Ke6
        • 2.Sf4#
        • 2.Sc7#
        • 2.Qxe7#
        • 2.Qxc6#
      • 1...Kxc5!
  • Keys
    • 1.Qc4!
      • 1...Ke6
        • 2.Qxc6#
      • 1...cxd5
        • 2.Qxd5#
      • 1...c5
        • 2.Qa6#
      • 1...e5
        • 2.Rf6#
      • 1...e6
        • 2.Se4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR2(A),XP(a)
    • P(c);SBLOCK::S(B)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(5)
      • Vars
        • P(a);::QAB1(A),XP(a)
        • P(c);::QAB1(A)
      • Refutation
        • P(c);
    • Try
      • S(C);
      • Threat
        • DUALS(5)
      • Vars
        • P(a);::QAB1(A),XP(a)
        • P(c);::QAB1(A)
      • Refutation
        • P(c);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);S_FLIGHT::S(B)
        • P(a);OGATE,P_SPINP(a),XS(C)::QAR1(A),XP(a)
        • P(a);OGATEB,SBLOCK::QAR(A)
        • P(c);SBLOCK::S(B)
      • Refutation
        • P(c);
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
        • K(b);P-FLIGHT::QAR1(A)
        • P(a);OGATEB,XS(C)::QAR2(A)
        • P(a);OGATEB::QAR2(A)
        • P(c);SBLOCK::S(B)
      • Refutation
        • P(c);
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);S_FLIGHT,XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(b);P-FLIGHT::QAR2(A),XP(a)
      • P(a);OGATE,XS(C)::QAR1(A),XP(a)
      • P(a);OGATEB,SBLOCK::QAR(A)
      • P(c);N_GUARD,SBLOCK::R(D)
      • P(c);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).