Problem Display
PID: 18517 (8/2K5/2R5/3k4/5Q2/1n6/4P3/3r4 w - - 0 1)

Speckmann, Werner

L'Echiquier de Paris, 1956

8/2K5/2R5/3k4/5Q2/1n6/4P3/3r4

#2

4 + 3


3295 Einfuhrung in die Welt des Schachproblem 1984

SOLUTION


  • SOUND
  • Sets
    • 1...Rd4
      • 2.Qf5#
    • 1...Sd4
      • 2.e4#
    • 1...Sc5
      • 2.Rd6#
  • Tries
    • 1.e3?
      • threat
        • 2.Qf5#
      • 1...Sd4
        • 2.e4#
      • 1...Sc5
        • 2.Rd6#
      • 1...Rf1!
  • Keys
    • 1.Kb6!
      • threat
        • 2.Rd6#
      • 1...Rd4
        • 2.Qf5#
      • 1...Sd4
        • 2.e4#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • R(a);SBLOCK::QAR2(B)
    • S(b);SBLOCK::P(A)
    • S(b);SBLOCK::R1(C)
  • Tries
    • Try
      • P(A);
      • Threat
        • QAR2(B)
      • Vars
        • S(b);SBLOCK::P(A)
        • S(b);SBLOCK::R1(C)
      • Refutation
        • R(a);
  • Actual
    • K(D);S_FLIGHT
    • Threat
      • R1(C)
    • Vars
      • R(a);SBLOCK::QAR2(B)
      • S(b);SBLOCK::P(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).