Problem Display
PID: 224711 (8/8/2KppQ1n/8/3pk3/2p3pb/4P1p1/1N4B1 w - - 0 1)

Billington, Thomas Henry

The Sunny South, 1888

8/8/2KppQ1n/8/3pk3/2p3pb/4P1p1/1N4B1

#2

5 + 9


6490 yacpdb 2020

SOLUTION


  • SOUND
  • Sets
    • 1...Bf5
      • 2.Qxd4#
    • 1...c2
      • 2.Sd2#
    • 1...d3
      • 2.Sxc3#
    • 1...e5
      • 2.Qf3#
  • Keys
    • 1.Be3!
      • threat
        • 2.Qf4#
      • 1...Kxe3
        • 2.Qf3#
      • 1...dxe3
        • 2.Sxc3#
      • 1...Bf5
        • 2.Qxd4#
      • 1...Sf5
        • 2.Qxe6#
      • 1...e5
        • 2.Qf3#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(d);SBLOCK::QAR1(E),XP(e)
    • P(b);N_GUARD::S(A)
    • P(e);N_GUARD::S(A),XP(b)
    • P(h);SBLOCK::QAB1(E)
  • Actual
    • B(B);
    • Threat
      • QAR1(E)
    • Vars
      • K(f);P-FLIGHT,XB(B)::QAR1(E)
      • P(e);N_GUARD,SBLOCK,XB(B)::S(A),XP(b)
      • B(d);SBLOCK::QAR1(E),XP(e)
      • S(i);S_CUTB(d)::QAR2(E),XP(h)
      • P(h);SBLOCK::QAB1(E)


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).