MESON Chess Problem Database

Problem Display
PID: 18027 (8/8/8/1Qn5/n7/p6K/k7/1RB5 w - - 0 1)

Harley, Brian

Time & Tide, 1952

(First published on Sat Dec 6 1952)

8/8/8/1Qn5/n7/p6K/k7/1RB5

#2

4 + 4

15290 Harley Scrapbook 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Sb3
      • 2.Qxb3#
    • 1...Sd3
      • 2.Qb3#
    • 1...Se4
      • 2.Qb3#
    • 1...Sa6
      • 2.Qb3#
    • 1...Se6
      • 2.Qb3#
    • 1...Sb7
      • 2.Qb3#
    • 1...Sd7
      • 2.Qb3#
  • Tries
    • 1.Qc4+?
      • 1...Sb3
        • 2.Qxb3#
      • 1...Kxb1!
  • Keys
    • 1.Bxa3!
      • 1...Kxa3
        • 2.Ra1#
      • 1...Sb2
        • 2.Qxb2#
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sc3
        • 2.Qb2#
      • 1...Sb6
        • 2.Qb2#
      • 1...Sd3
        • 2.Qb3#
      • 1...Se4
        • 2.Qb3#
      • 1...Sa6
        • 2.Qb3#
      • 1...Se6
        • 2.Qb3#
      • 1...Sb7
        • 2.Qb3#
      • 1...Sd7
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(d);N_GUARD::QAB1(D),XS(d)
    • S(d);N_GUARD::QAB1(D)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • S(d);N_GUARD,P_SPINS(d)::QAB1(D),XS(d)
      • Refutation
        • K(a);S_FLIGHT,XR(A)
  • Actual
    • B(B);XP(b)
    • Vars
      • K(a);P-FLIGHT,XB(B)::R(A)
      • S(c);N_GUARD::QAR1(D),XS(c)
      • S(d);N_GUARD::QAB1(D),XS(d)
      • S(c);N_GUARD::QAR1(D)
      • S(d);N_GUARD::QAB1(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).