Problem Display
PID: 44858 (2qrr1n1/5bK1/2p2P2/4kpN1/3N1p2/BP3P2/3Q4/8 w - - 0 1)

Fothergill, Percival Guy Laugham (PGLF)

Recomm., BCF 043. Ty., 1942-1943

2qrr1n1/5bK1/2p2P2/4kpN1/3N1p2/BP3P2/3Q4/8

#2

8 + 9


SOLUTION


  • SOUND
  • Sets
    • 1...Qb8
      • 2.Sxc6#
    • 1...Rd5
      • 2.Sxf7#
  • Keys
    • 1.Bb2!
      • threat
        • 2.Sxc6#
      • 1...Kd5
        • 2.Sde6#
      • 1...Kd6
        • 2.Sde6#
      • 1...Rxd4
        • 2.Qxd4#
      • 1...Rd5
        • 2.Sxf7#
      • 1...Bd5
        • 2.Sb5#
      • 1...c5
        • 2.Sc6#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • Q(f);N_GUARD::S(E),XP(d)
    • R(g);SBLOCK::S(F),XB(e)
  • Actual
    • B(B);
    • Threat
      • B(B)+S(E),DCHECK,XP(d)
    • Vars
      • K(b);P-FLIGHT::QAR(A)+S(E)
      • K(b);S_FLIGHT::QAR(A)+S(E)
      • R(g);OGATE,P_SPINR(g),XS(E)::QAB1(A),XR(g)
      • R(g);SBLOCK::S(F),XB(e)
      • B(e);S_CUTR(g)::B(B)+S(E)
      • P(d);::B(B)+S(E),DCHECK


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).