Problem Display
PID: 234918 (7R/3P1k2/7P/2N3K1/8/8/8/8 w - - 0 1)

Haring, Jacobus

Source?, 1998

7R/3P1k2/7P/2N3K1/8/8/8/8

#2

5 + 1


15148 Sadier Collection 2021

SOLUTION


  • SOUND
  • Tries
    • 1.Rh7+?
      • 1...Kf8
        • 2.d8Q#
        • 2.d8R#
      • 1...Kg8!
    • 1.Rf8+?
      • 1...Ke7
        • 2.d8Q#
      • 1...Kxf8!
  • Keys
    • 1.d8R!
      • 1...Ke7
        • 2.Rd7#

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(a);P-FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • K(a);P-FLIGHT::P=Q
      • Refutation
        • K(a);P-FLIGHT,XR(E)
  • Actual
    • P(D);
    • Vars
      • K(a);P-FLIGHT::R1(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).