Problem Display
PID: 146315 (8/Q1p4R/5r2/1k5B/8/1K6/8/8 w - - 0 1)

Lincoln, Robert A

The Problemist, 2012

8/Q1p4R/5r2/1k5B/8/1K6/8/8

#2

4 + 3


SOLUTION


  • SOUND
  • Sets
    • 1...c6
      • 2.Be2#
      • 2.Rb7#
  • Keys
    • 1.Be8+!
      • 1...Rc6
        • 2.Rh5#
      • 1...c6
        • 2.Rb7#

FEATURES


  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Actual
    • B(B);CHECK
    • Vars
      • R(b);P_SPINR(b)::R(D)
      • P(c);OGATE,P_SPINP(c)::R(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).