Problem Display
PID: 82125 (8/4P3/1N1ppp2/2p1k3/3p4/B2P2K1/8/5R2 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Problemas, 1965

8/4P3/1N1ppp2/2p1k3/3p4/B2P2K1/8/5R2

#2

6 + 6


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Tries
    • 1.Rf5+?
      • 1...exf5
        • 2.e8Q#
        • 2.e8R#
      • 1...Kxf5!
    • 1.e8Q?
      • 1...d5
        • 2.Qb8#
      • 1...f5
        • 2.Qh8#
      • 1...c4!
  • Keys
    • 1.e8S!
      • 1...c4
        • 2.Bxd6#
      • 1...d5
        • 2.Sd7#
      • 1...f5
        • 2.Re1#

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • P(e);SBLOCK,XR(A)::P=Q
      • Refutation
        • K(c);P-FLIGHT,XR(A)
    • Try
      • P(F);P_PINP(e)
      • Vars
        • P(d);OGATEB::QAB(F)
        • P(f);OGATEB::QAB(F)
      • Refutation
        • P(b);
  • Actual
    • P(F);
    • Vars
      • P(b);OGATE::B(B),XP(d)
      • P(d);SBLOCK::S(E)
      • P(f);SBLOCK::R(A)


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).