Problem Display
PID: 139988 (NR2b3/8/q2b1n2/kpp1Q3/8/1PP1N1p1/8/4K2R w K - 0 1)

Kipping, Cyril Stanley

The Problemist, 1938

NR2b3/8/q2b1n2/kpp1Q3/8/1PP1N1p1/8/4K2R

#2

8 + 8


SOLUTION


  • SOUND
  • Sets
    • 1...b4
      • 2.cxb4#
    • 1...c4
      • 2.Sxc4#
  • Tries
    • 1.Kd2?
      • threat
        • 2.Ra1#
      • 1...b4
        • 2.cxb4#
      • 1...c4
        • 2.Sxc4#
      • 1...Se4+!
  • Keys
    • 1.0-0!
      • threat
        • 2.Ra1#
      • 1...b4
        • 2.cxb4#
      • 1...c4
        • 2.Sxc4#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATE,P_SPINP(d)::P(D),XP(c)
    • P(d);P_SPINP(c)::S(E),XP(d)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • R(B)
      • Vars
        • P(c);OGATE,P_SPINP(d)::P(D),XP(c)
        • P(d);P_SPINP(c)::S(E),XP(d)
      • Refutation
        • S(g);CHECK
  • Actual
    • K(A);0-0
    • Threat
      • R(B)
    • Vars
      • P(c);OGATE,P_SPINP(d)::P(D),XP(c)
      • P(d);P_SPINP(c)::S(E),XP(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).