Problem Display
PID: 139040 (N2k1K2/5p2/1Pp2P2/2Pn2B1/8/7B/8/3R4 w - - 0 1)

Kipping, Cyril Stanley

The Problemist, 1937

N2k1K2/5p2/1Pp2P2/2Pn2B1/8/7B/8/3R4

#2

8 + 4


5454 Near Snap 2011

SOLUTION


  • SOUND
  • Tries
    • 1.Re1?
      • threat
        • 2.Re8#
      • 1...Sc7
        • 2.bxc7#
      • 1...Se7
        • 2.fxe7#
      • 1...Se3!
  • Keys
    • 1.Bd2!
      • 1...Sxb6
        • 2.Ba5#
      • 1...Sxf6
        • 2.Bg5#
      • 1...Sc3
        • 2.Bxc3#
      • 1...Se3
        • 2.Bxe3#
      • 1...Sb4
        • 2.Bxb4#
      • 1...Sf4
        • 2.Bxf4#
      • 1...Sc7
        • 2.bxc7#
      • 1...Se7
        • 2.fxe7#

Anticipated by 64091(0000)

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);N_PINS(a)
      • Threat
        • R1(A)
      • Vars
        • S(a);OGATE::P(E),XS(a)
        • S(a);OGATE::P(F),XS(a)
      • Refutation
        • S(a);
  • Actual
    • B(D);N_PINS(a)
    • Vars
      • S(a);OGATEB,XP(E)::R(A)+B(D)
      • S(a);OGATEB,XP(F)::R(A)+B(D)
      • S(a);OGATEB::R(A)+B(D),XS(a)
      • S(a);OGATE::P(E),XS(a)
      • S(a);OGATE::P(F),XS(a)


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).