Problem Display
PID: 194685 (4k2r/6p1/3KP3/8/8/7p/1B5Q/7R w k - 0 1)

Gatti, Daniele

Best Problems, 2019

4k2r/6p1/3KP3/8/8/7p/1B5Q/7R

#2

5 + 4


SOLUTION


  • SOUND
  • Tries
    • 1.Ra1?
      • threat
        • 2.Ra8#
      • 1...Kd8
        • 2.Ra8#
      • 1...Kf8
        • 2.Ra8#
      • 1...0-0!
  • Keys
    • 1.Qg2!
      • threat
        • 2.Qa8#
      • 1...Kd8
        • 2.Qa8#
      • 1...Kf8
        • 2.Qa8#
      • 1...0-0
        • 2.Qxg7#
      • 1...hxg2
        • 2.Rxh8#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Threat
        • R(A)
      • Vars
        • K(c);P-FLIGHT::R(A)
      • Refutation
        • K(c);0-0
  • Actual
    • Q(C);
    • Threat
      • QAR(C)
    • Vars
      • K(c);P-FLIGHT::QAR(C)
      • K(c);0-0,OGATEB,P_SPINP(b)::QAR1(C),XP(b)
      • P(a);OGATE,XQ(C)::R(A),XR(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).