Problem Display
PID: 102052 (2BB4/3p3p/2N4Q/3k4/1K3P2/8/8/8 w - - 0 1)

Glynn, James Joseph

Adelaide Observer, 1882

2BB4/3p3p/2N4Q/3k4/1K3P2/8/8/8

#2

6 + 3


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Sets
    • 1...d6
      • 2.Qh1#
  • Tries
    • 1.Bb6?
      • 1...dxc6
        • 2.Qe6#
      • 1...d6
        • 2.Qh1#
      • 1...Ke4!
  • Keys
    • 1.Qxh7!
      • 1...Kxc6
        • 2.Qxd7#
      • 1...Kd6
        • 2.Qxd7#
      • 1...Ke6
        • 2.Qxd7#
      • 1...dxc6
        • 2.Qd3#
      • 1...d6
        • 2.Qh1#

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::QAB(D)
  • Tries
    • Try
      • B(F);
      • Vars
        • P(b);N_GUARD,XS(C)::QAB1(D)
        • P(b);SBLOCK::QAB(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(D);XP(c)
    • Vars
      • K(a);S_FLIGHT,XS(C)::QAB1(D),XP(b)
      • K(a);P-FLIGHT::QAR1(D),XP(b)
      • K(a);P_SPINP(b),S_FLIGHT::QAB1(D),XP(b)
      • P(b);SBLOCK,XS(C)::QAR2(D)
      • P(b);SBLOCK::QAB(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).