MESON Chess Problem Database

Problem Display
PID: 145142 (8/8/1Q1p4/2N5/2pk1K2/5B2/3p4/8 w - - 0 1)

Caine, Walter Edmund

London Herald, 1926

(First published on Sat Apr 3 1926)

8/8/1Q1p4/2N5/2pk1K2/5B2/3p4/8

#2

4 + 4

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.Qb4#
  • Tries
    • 1.Se4+?
      • 1...Kd5
        • 2.Sg5#
        • 2.Qxd6#
      • 1...Kd3!
    • 1.Qb2+?
      • 1...c3
        • 2.Qb4#
      • 1...Kxc5!
  • Keys
    • 1.Be4!
      • threat
        • 2.Sa4#
      • 1...Kc3
        • 2.Sa4#
      • 1...dxc5
        • 2.Qf6#
      • 1...c3
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATEB::QAR2(D)
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • P(b);OGATEB,P_SPINP(b)::QAR2(D)
      • Refutation
        • K(c);S_FLIGHT,XS(C)
  • Actual
    • B(A);
    • Threat
      • QAB(D)+S(C)
    • Vars
      • K(c);S_FLIGHT::S(C)
      • P(d);OGATE,P_SPINP(d),SBLOCK,XS(C)::QAB(D)
      • P(b);OGATEB::QAR2(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).