Problem Display
PID: 78346 (2K1B3/8/8/Pn6/kNNR4/P1p5/2P5/2B5 w - - 0 1)

Touw Hian Bwee

2nd HM., De Waarheid, 1977

(First published on Sat Oct 1 1977)

2K1B3/8/8/Pn6/kNNR4/P1p5/2P5/2B5

#2

9 + 3


102 Probleemblad 1979
6352 A Collection of Chess Problems by Touw Hian Bwee 2008

SOLUTION


  • SOUND
  • Tries
    • 1.Rd7?
      • 1...Sd6+
        • 2.Rxd6#
      • 1...Sa7+
        • 2.Rxa7#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sc7
        • 2.Rxc7#
      • 1...Sxa3!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Sb6#
      • 1...Sd6+
        • 2.Sxd6#
      • 1...Sa7+
        • 2.Sxa7#
      • 1...Sxa3
        • 2.Sxa3#
      • 1...Sxd4
        • 2.Sxd4#
      • 1...Sc7
        • 2.Sd6#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);N_PINS(c)
      • Vars
        • S(c);CHECK,OGATEB::B(I)+R(F),XS(c)
        • S(c);OGATEB::B(I)+R(F),XS(c)
      • Refutation
        • S(c);XP(C)
  • Actual
    • S(D);N_PINS(c)
    • Threat
      • R(F)+S(E),DCHECK
    • Vars
      • S(c);CHECK,N_GUARD::R(F)+S(E),XS(c)
      • S(c);CHECK::B(I)+S(D),XS(c)
      • S(c);XP(C)::R(F)+S(E),XS(c)
      • S(c);XR(F)::B(I)+S(D),XS(c)
      • S(c);N_GUARD::R(F)+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).