Problem Display
PID: 198838 (1nRrknR1/2b1N3/4P3/3N4/8/8/8/3K4 w - - 0 1)

ten Cate, Pieter

Schaakblad, 1921

1nRrknR1/2b1N3/4P3/3N4/8/8/8/3K4

#2

6 + 5


6490 yacpdb 2019

SOLUTION


  • SOUND
  • Tries
    • 1.Rxd8+?
      • 1...Kxd8
        • 2.Rxf8#
      • 1...Bxd8!
  • Keys
    • 1.Sg6!
      • threat
        • 2.Rxf8#
      • 1...Bd6
        • 2.Sf6#
      • 1...Sd7
        • 2.Sxc7#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);CHECK,N_SPINS(B),XR(c)
      • Vars
        • K(d);P-FLIGHT,XR(E)::R(F),XS(e)
      • Refutation
        • B(a);XR(E)
  • Actual
    • S(D);
    • Threat
      • R1(F),XS(e)
    • Vars
      • B(a);N_PINS(B)::S(B)
      • S(b);N_PINS(B)::S(B),XB(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).