Problem Display
PID: 160881 (2b5/p2rB3/p7/2P5/3kp2n/8/B3PP1Q/1N2nK2 w - - 0 1)

Williams, Philip Hamilton

Birmingham Post, 1905

2b5/p2rB3/p7/2P5/3kp2n/8/B3PP1Q/1N2nK2

#2

8 + 8


15351 SCPF/BCPS Black Books 2017

SOLUTION


  • SOUND
  • Sets
    • 1...Rd6
      • 2.Qxd6#
    • 1...Rb7
      • 2.Qd6#
    • 1...Rc7
      • 2.Qd6#
    • 1...Rxe7
      • 2.Qd6#
    • 1...Sd3
      • 2.e3#
    • 1...Sg2
      • 2.Qh8#
    • 1...e3
      • 2.Qf4#
  • Keys
    • 1.Qb8!
      • threat
        • 2.Qb2#
      • 1...Rxe7
        • 2.Qd6#
      • 1...Rd6
        • 2.Qxd6#
      • 1...e3
        • 2.Qf4#
      • 1...Rb7
        • 2.Qd6#
      • 1...Bb7
        • 2.Qh8#
      • 1...Sd3
        • 2.e3#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(g);N_GUARD::QAR2(F),XR(g)
    • R(g);N_GUARD::QAR2(F)
    • R(g);N_GUARD,XB(H)::QAR2(F)
    • S(a);SBLOCK::P(D)
    • S(d);OGATE::QAB(F)
    • P(c);OGATEB::QAR2(F)
  • Actual
    • Q(F);
    • Threat
      • QAB(F)
    • Vars
      • R(g);N_GUARD,XB(H)::QAR2(F)
      • R(g);N_GUARD::QAR2(F),XR(g)
      • P(c);OGATEB::QAR2(F)
      • R(g);N_GUARD::QAR2(F)
      • B(h);OGATE::QAB(F)
      • S(a);SBLOCK::P(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).