Problem Display
PID: 215682 (8/6p1/1p2N1Kp/4p3/2P1kp2/3R4/2PP4/8 w - - 0 1)

Dohrn-Luttgens, Julius

Funkschach, 1927

8/6p1/1p2N1Kp/4p3/2P1kp2/3R4/2PP4/8

#2

6 + 6


15148 Sadier Collection 2020

SOLUTION


  • SOUND
  • Sets
    • 1...f3
      • 2.Re3#
    • 1...b5
      • 2.Sc5#
    • 1...h5
      • 2.Sg5#
  • Tries
    • 1.Rg3?
      • threat
        • 2.d3#
      • 1...f3
        • 2.Rg4#
      • 1...fxg3!
  • Keys
    • 1.Rh3!
      • threat
        • 2.d3#
      • 1...f3
        • 2.Rh4#

FEATURES


  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • P(b);N_GUARD::R1(C)
    • P(d);N_GUARD::S(E)
    • P(e);N_GUARD::S(E)
  • Tries
    • Try
      • R(C);
      • Threat
        • P(B)
      • Vars
        • P(b);OGATEB,SBLOCK::R(C)
      • Refutation
        • P(b);XR(C)
  • Actual
    • R(C);
    • Threat
      • P(B)
    • Vars
      • P(b);OGATEB,SBLOCK::R(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).