Problem Display
PID: 91410 (B2K3N/2p5/2p1kp2/1b5R/1Bp5/4Np2/2p1p3/4Q3 w - - 0 1)

Lehmann, Tadeusz

Probleemblad, 1989

B2K3N/2p5/2p1kp2/1b5R/1Bp5/4Np2/2p1p3/4Q3

#2

7 + 9


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Tries
    • 1.Qd2?
      • threat
        • 2.Qd7#
      • 1...c5
        • 2.Qd5#
      • 1...f5!
    • 1.Qh4?
      • threat
        • 2.Qe4#
      • 1...f5
        • 2.Qe7#
      • 1...c5!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Qg8#
      • 1...f5
        • 2.Rh6#
      • 1...c5
        • 2.Bd5#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • P(f);N_GUARD::QAB1(A)
      • Refutation
        • P(h);
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • P(h);OGATE::QAR1(A)
      • Refutation
        • P(f);
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • P(h);OGATEB::R(D)
      • P(f);OGATE::B(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).