MESON Chess Problem Database

Problem Display
PID: 11016 (8/q4p2/p1RN4/1pb5/p1r3R1/2kN4/K4p2/3Q4 w - - 0 1)

Boorer, PA

Chess, 1936

8/q4p2/p1RN4/1pb5/p1r3R1/2kN4/K4p2/3Q4

#2

6 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.Se4#
    • 1...b4
      • 2.Rxc4#
    • 1...a5
      • 2.Sxb5#
  • Keys
    • 1.Sb4!
      • threat
        • 2.Sd5#
      • 1...Kxb4
        • 2.Qd2#
      • 1...Rxb4
        • 2.Rg3#
      • 1...Bxb4
        • 2.Se4#
      • 1...Rd4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • B(f);P_SPINR(d),SBLOCK::S(F)
    • P(e);N_GUARD::R1(D),XR(d)
    • P(g);N_GUARD::S(F),XP(e)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(b);P_SPINR(d),S_FLIGHT,XS(C)::QAB(A)
      • R(d);P_SPINB(f),SBLOCK,XS(C)::R(D)
      • B(f);P_SPINR(d),SBLOCK,XS(C)::S(F)
      • R(d);N_GUARD,P_SPINB(f)::QAB1(A),XR(d)
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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).