Problem Display
PID: 82283 (3R4/5Knp/3P1N2/1ppNk3/3p4/B4pPB/Q3PR2/4n2b w - - 0 1)

Ahues, Herbert Siegfried Oskar

Tidskrift for Schack, 1985

3R4/5Knp/3P1N2/1ppNk3/3p4/B4pPB/Q3PR2/4n2b

#2

11 + 9


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Sets
    • 1...d3
      • 2.Bb2#
      • 2.Qa1#
      • 2.Qb2#
  • Tries
    • 1.Se3?
      • threat
        • 2.Qd5#
      • 1...fxe2
        • 2.Seg4#
      • 1...c4!
    • 1.Sb4?
      • threat
        • 2.Sc6#
        • 2.Qd5#
      • 1...cxb4
        • 2.Qd5#
      • 1...c4
        • 2.Sc6#
      • 1...fxe2!
    • 1.Sb6?
      • threat
        • 2.Qd5#
      • 1...c4
        • 2.Sbd7#
      • 1...fxe2!
    • 1.Se7?
      • threat
        • 2.Sc6#
        • 2.Qd5#
      • 1...c4
        • 2.Sc6#
      • 1...fxe2!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Qd5#
      • 1...fxe2
        • 2.Sg4#
      • 1...c4
        • 2.Sd7#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Threat
        • QAR1(A)
      • Vars
        • P(c);XP(B)::S(G)
      • Refutation
        • P(f);
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(f);XS(G)::QAR1(A)
        • P(f);::S(G)
      • Refutation
        • P(c);XP(B)
    • Try
      • S(G);
      • Threat
        • QAR1(A)
      • Vars
        • P(f);::S(G)
      • Refutation
        • P(c);XP(B)
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(f);::S(G)
      • Refutation
        • P(c);XP(B)
  • Actual
    • S(G);
    • Threat
      • QAR1(A)
    • Vars
      • P(c);XP(B)::S(I)
      • P(f);::S(I)


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).