MESON Chess Problem Database

Problem Display
PID: 21121 (k7/P2p4/K3p3/8/8/b7/8/4Q3 w - - 0 1)

Gibbins, Norman Martin

Westminster Gazette, 1916

k7/P2p4/K3p3/8/8/b7/8/4Q3

#2

3 + 4

2838 Fun with Chess Miniatures 1996
3713 Snap 2005
136 Problem Observer 2007
145 StrateGems 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6
      • 2.Qh1#
      • 2.Qe4#
  • Tries
    • 1.Qc3?
      • threat
        • 2.Qc8#
      • 1...Bd6
        • 2.Qf3#
      • 1...Bc5!
    • 1.Qg3?
      • threat
        • 2.Qb8#
      • 1...Bd6
        • 2.Qg2#
        • 2.Qf3#
      • 1...d6
        • 2.Qg8#
      • 1...e5!
    • 1.Qh4?
      • threat
        • 2.Qd8#
      • 1...Bd6
        • 2.Qh1#
        • 2.Qe4#
      • 1...Be7!
    • 1.Qxe6?
      • threat
        • 2.Qd5#
        • 2.Qe8#
      • 1...Bd6
        • 2.Qd5#
        • 2.Qe4#
      • 1...Be7
        • 2.Qd5#
      • 1...d5
        • 2.Qxd5#
        • 2.Qc8#
        • 2.Qc6#
        • 2.Qe8#
      • 1...dxe6!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Qb8#
      • 1...Bd6
        • 2.Qe4#
      • 1...d6
        • 2.Qh8#

This anticipates 57541(1936)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • B(a);S_CUTP(c)::QAB(A)
      • Refutation
        • B(a);
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • P(c);S_CUTB(a)::QAR(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Refutation
        • B(a);
    • Try
      • Q(A);XP(b)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAB(A)
      • Refutation
        • P(c);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • B(a);S_CUTP(c)::QAB(A)
      • P(c);S_CUTB(a)::QAB1(A)
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).