Problem Display
PID: 17715 (R7/8/r7/2Q5/bN6/k1K5/8/8 w - - 0 1)

Massmann, Wilhelm Karl Heinrich

Aachener Nachrichten, 1949

R7/8/r7/2Q5/bN6/k1K5/8/8

#2

4 + 3


3295 Einfuhrung in die Welt des Schachproblem 1984

SOLUTION


  • SOUND
  • Tries
    • 1.Qd5?
      • threat
        • 2.Qa2#
      • 1...Bb3
        • 2.Qxb3#
      • 1...Rc6+!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qa2#
      • 1...Bb3
        • 2.Qxb3#
      • 1...Rc6
        • 2.Sc2#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • B(b);N_GUARD,P_SPINR(c)::QAR1(C),XB(b)
      • Refutation
        • R(c);CHECK,P_SPINB(b)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • B(b);N_GUARD,P_SPINR(c)::QAR1(C),XB(b)
      • R(c);P_PINQ(C),P_SPINB(b)::S(B)


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).