Problem Display
PID: 152789 (8/4p1KB/4N1Np/7k/4P1r1/6P1/4QP1P/7R w - - 0 1)

Dawson, Thomas Rayner

The Problemist, 1942

8/4p1KB/4N1Np/7k/4P1r1/6P1/4QP1P/7R

#2

10 + 4


15256 TRD Scrapbook 2014

SOLUTION


  • SOUND
  • Keys
    • 1.f3!
      • threat
        • 2.fxg4#
      • 1...Rxg6+
        • 2.Bxg6#
      • 1...Rxg3
        • 2.hxg3#
      • 1...Rxe4
        • 2.fxe4#
      • 1...Rf4
        • 2.Sgxf4#
      • 1...Rh4
        • 2.Qb5#
      • 1...Rg5
        • 2.Sf4#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Actual
    • P(C);N_PINR(a)
    • Threat
      • P(C),XR(a)
    • Vars
      • R(a);CHECK,OGATE,XS(H)::B(J),XR(a)
      • R(a);OGATE,XP(E)::R(A)+P(D),XR(a)
      • R(a);N_PINS(H),OGATE,XP(F)::QAB(B)+P(C),XR(a)
      • R(a);N_PINS(H)::S(H),XR(a)
      • R(a);N_GUARD,N_PINS(H)::QAR(B)
      • R(a);N_GUARD,SBLOCK::S(G)


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).