Problem Display
PID: 232356 (8/6P1/8/8/8/2K5/8/1kN5 w - - 0 1)

Speckmann, Werner

Deutsche Schachzeitung, 1975

8/6P1/8/8/8/2K5/8/1kN5

#2

3 + 1


15148 Sadier Collection 2021

SOLUTION


  • SOUND
  • Tries
    • 1.g8R?
      • 1...Kxc1
        • 2.Rg1#
      • 1...Ka1!
  • Keys
    • 1.g8Q!
      • 1...Ka1
        • 2.Qa2#
      • 1...Kxc1
        • 2.Qg1#

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(C);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(A)::R(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • P(C);
    • Vars
      • K(a);P-FLIGHT::QAR1(C)
      • K(a);OGATEB,P-FLIGHT,XS(A)::QAR(C)


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).