Problem Display
PID: 4702 (3Q4/8/N7/3pr3/4k1p1/8/3K4/5R2 w - - 0 1)

Heathcote, Godfrey

Manchester Evening News, 1887

3Q4/8/N7/3pr3/4k1p1/8/3K4/5R2

#2

4 + 4


15 British Chess Magazine 1891
3310 2345 Chess Problems 1997

SOLUTION


  • SOUND
  • Sets
    • 1...g3
      • 2.Qh4#
  • Tries
    • 1.Qf6?
      • threat
        • 2.Rf4#
        • 2.Qf4#
      • 1...Kd4
        • 2.Rf4#
      • 1...Rf5
        • 2.Sc5#
      • 1...d4!
  • Keys
    • 1.Qh8!
      • 1...Kd4
        • 2.Rf4#
      • 1...Rf5
        • 2.Sc5#
      • 1...Rg5
        • 2.Sc5#
      • 1...Rh5
        • 2.Sc5#
      • 1...Re6
        • 2.Sc5#
      • 1...Re7
        • 2.Sc5#
      • 1...Re8
        • 2.Sc5#
      • 1...g3
        • 2.Qh4#
      • 1...d4
        • 2.Qh1#

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATEB::QAR(D)
  • Tries
    • Try
      • Q(D);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT,P_SPINR(d)::R(A)
        • R(d);::S(C)
      • Refutation
        • P(c);
  • Actual
    • Q(D);
    • Vars
      • K(a);P-FLIGHT,P_SPINR(d)::R(A)
      • R(d);::S(C)
      • P(b);OGATEB::QAR(D)
      • P(c);SBLOCK::QAB(D)


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).