Problem Display
PID: 87854 (8/4BK2/6Np/5k2/8/3P4/5NnR/2b2B1b w - - 0 1)

Trump, Raymond

3rd Comm., Wurzburg-75 JT, 1949

8/4BK2/6Np/5k2/8/3P4/5NnR/2b2B1b

#2

7 + 5


70 American Chess Problemist 1950
6490 yacpdb 2009

SOLUTION


  • SOUND
  • Sets
    • 1...Bb2
      • 2.Rh5#
    • 1...Ba3
      • 2.Rh5#
    • 1...Se1
      • 2.Bh3#
    • 1...Se3
      • 2.Rh5#
    • 1...Sh4
      • 2.Bh3#
  • Tries
    • 1.Be2?
      • threat
        • 2.Bg4#
      • 1...Se3
        • 2.Rh5#
      • 1...h5!
  • Keys
    • 1.d4!
      • threat
        • 2.Bd3#
      • 1...Se1
        • 2.Bh3#
      • 1...Se3
        • 2.Rh5#
      • 1...Sf4
        • 2.Sh4#
      • 1...Sh4
        • 2.Bh3#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::R(C)
    • S(c);OGATE::B(A)
    • S(c);S_CUTB(a)::R(C)
  • Tries
    • Try
      • B(A);
      • Threat
        • B(A)
      • Vars
        • S(c);S_CUTB(a)::R(C)
      • Refutation
        • P(e);
  • Actual
    • P(D);
    • Threat
      • B(A)
    • Vars
      • S(c);OGATE::B(A)
      • S(c);S_CUTB(a)::R(C)
      • S(c);N_GUARD,SBLOCK::S(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).