Problem Display
PID: 81149 (8/KR6/1pp5/1B3R2/1k2N3/pNpP4/p1P5/8 w - - 0 1)

Veders, Visvaldis M

1st Prize, Urania, 1980

8/KR6/1pp5/1B3R2/1k2N3/pNpP4/p1P5/8

#2

8 + 6


SOLUTION


  • SOUND
  • Tries
    • 1.Rf4?
      • threat
        • 2.Sd6#
      • 1...Kxb5
        • 2.Sxc3#
        • 2.Sd6#
      • 1...c5!
    • 1.Rxb6?
      • threat
        • 2.Bxc6#
      • 1...c5
        • 2.Bc6#
        • 2.Bd7#
        • 2.Be8#
      • 1...cxb5!
  • Keys
    • 1.Sec5!
      • threat
        • 2.Sa6#
      • 1...Kxb5
        • 2.Rxb6#
      • 1...bxc5
        • 2.Bxc6#
      • 1...cxb5
        • 2.Rf4#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);
      • Threat
        • R(F)+S(D)
      • Refutation
        • P(f);
    • Try
      • R(H);XP(e)
      • Threat
        • R(H)+B(E),XP(f)
      • Refutation
        • P(f);P_SPINP(f),XB(E)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(d);OGATEB,P-FLIGHT,P_SPINP(e),XB(E)::R1(H),XP(e)
      • P(e);OGATEB,XS(D)::R(H)+B(E),XP(f)
      • P(f);SBLOCK,XB(E)::R(F)


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).