Problem Display
PID: 19014 (8/P7/2n5/5R2/4k1P1/3R2P1/3K4/8 w - - 0 1)

White, Alain Campbell

More White Rooks, 1911

8/P7/2n5/5R2/4k1P1/3R2P1/3K4/8

#2

6 + 2


SOLUTION


  • SOUND
  • Sets
    • 1...Sd4
      • 2.Re3#
    • 1...Se5
      • 2.Rf4#
  • Tries
    • 1.Rdf3?
      • threat
        • 2.R3f4#
      • 1...Kd4
        • 2.R3f4#
      • 1...Se5!
  • Keys
    • 1.a8R!
      • 1...Sb4
        • 2.Re8#
      • 1...Sd4
        • 2.Re3#
      • 1...Sa5
        • 2.Re8#
      • 1...Se5
        • 2.Rf4#
      • 1...Sa7
        • 2.Re8#
      • 1...Se7
        • 2.Ra4#
      • 1...Sb8
        • 2.Ra4#
      • 1...Sd8
        • 2.Ra4#

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::R1(B)
    • S(b);SBLOCK::R1(E)
  • Tries
    • Try
      • R(B);
      • Threat
        • R1(B)
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • S(b);
  • Actual
    • P(F);
    • Vars
      • S(b);N_GUARD::R(F)
      • S(b);SBLOCK::R1(B)
      • S(b);SBLOCK::R1(E)


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).